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Published by JY 0769 BG CD Customer Service Printed in the Netherlands Subject to modification EN 3122 785 17450
Contents Page1. Technical Specifications, Connections, and Chassis
Overview 22. Safety Instructions, Warnings, and Notes 43. Directions for Use 64. Mechanical Instructions 75. Service Modes, Error Codes, and Fault Finding 96. Block Diagrams, Test Point Overviews, and
7. Circuit Diagrams and PWB LayoutsMono Carrier: Power Supply (A1) 13 21-22Mono Carrier: Line Deflection (A2) 14 21-22Mono Carrier: Frame Deflection (A3) 15 21-22Mono Carrier: Tuner IF (A4) 16 21-22Mono Carrier: AV Switch (A5) 17 21-22Mono Carrier: Audio Amplifier (A6) 19 21-22Mono Carrier: Tone Control (Optional) (A7) 18 21-22Mono Carrier: CPU & Decoder (A8) 20 21-22Keyboard Control Panel (D) 23 24Main Switch Panel (E) 25 25Side A/V Panel (G) 26 26BTSC Panel (G) 27 27Slim EW Panel (M) 28 28Sub Woofer Panel (Optional) (Z) 29 30
8. Alignments 319. Circuit Descriptions, Abbreviation List, and IC Data
Sheets 36Abbreviation List 37IC Data Sheets 38
10. Spare Parts List 5311. Revision List 56
Technical Specifications, Connections, and Chassis OverviewEN 2 SK4.0L CA1.
1. Technical Specifications, Connections, and Chassis Overview
Index of this chapter:1.1 Technical Specifications1.2 Connection Overview1.3 Chassis Overview (Mechanical chassis)
Note: Data below can deviate slightly from the actual situation, due to the different set executions.
1.1 Technical Specifications
1.1.1 Vision
Display type : CRTScreen size : 21” (55 cm), 4:3Tuning system : PLLTV Colour systems : NTSC, PAL M/NVideo playback : NTSC M/N 3.58, 4.43
: PAL 50Presets/channels : 181 channelsTuner bands : VHF
: UHF
1.1.2 Sound
Sound systems : FM-stereo, SAPMaximum power (WRMS) : 2 x 3
1.1.3 Miscellaneous
Power supply:- Mains voltage (VAC) : 90 - 260
- Mains frequency (Hz) : 50 / 60
Ambient conditions:- Temperature range (°C) : -5 to +45- Maximum humidity : 90% R.H.
Power consumption- Normal operation (W) : ≈ 72- Stand-by (W) : < 3
1.2 Connection Overview
Note: The following connector colour abbreviations are used (acc. to DIN/IEC 757): Bk= Black, Bu= Blue, Gn= Green, Gy= Grey, Rd= Red, Wh= White, and Ye= Yellow.
1.2.1 Rear and Side Connections
Figure 1-1 Rear and Side Connections
Cinch: Video CVBS - Out, Audio - OutYe - Video CVBS 1 VPP / 75 ohm ��
Wh - Audio L 0.5 VRMS /10 kohm ��
Rd - Audio R 0.5 VRMS / 10 kohm ��
Cinch: Video CVBS - In, Audio - InYe - Video CVBS 1 VPP / 75 ohm ��
Wh - Audio L 0.5 VRMS / 10 kohm ��Rd - Audio R 0.5 VRMS / 10 kohm ��
Cinch: Video YPbPr - InGn - Video Y 1 VPP / 75 ohm ��Bu - Video Pb 0.7 VPP / 75 ohm ��
Rd - Video Pr 0.7 VPP / 75 ohm ��
Aerial - In- - IEC-type (EU) Coax, 75 ohm �
Cinch: Video CVBS - In, Audio - InYe - Video CVBS 1 VPP / 75 ohm ��Wh - Audio L 0.5 VRMS / 10 kohm ��
Rd - Audio R 0.5 VRMS / 10 kohm ��
H_17210_023.eps080607
Technical Specifications, Connections, and Chassis Overview EN 3SK4.0L CA 1.
1.3 Chassis Overview (Mechanical chassis)
Figure 1-2 PWB location
H_17450_003.eps210907
D
B
EK
A
M
G
MAIN SWITCH PANEL
Safety Instructions, Warnings, and NotesEN 4 SK4.0L CA2.
2. Safety Instructions, Warnings, and Notes
Index of this chapter:2.1 Safety Instructions2.2 Maintenance Instructions2.3 Warnings2.4 Notes
2.1 Safety Instructions
Safety regulations require the following during a repair:• Connect the set to the Mains/AC Power via an isolation
transformer (> 800 VA).• Replace safety components, indicated by the symbol �,
only by components identical to the original ones. Any other component substitution (other than original type) may increase risk of fire or electrical shock hazard.
• Wear safety goggles when you replace the CRT. Safety regulations require that after a repair, the set must be returned in its original condition. Pay in particular attention to the following points: • General repair instruction: as a strict precaution, we advise
you to re-solder the solder connections through which the horizontal deflection current flows. In particular this is valid for the:1. Pins of the line output transformer (LOT).2. Fly-back capacitor(s).3. S-correction capacitor(s).4. Line output transistor.5. Pins of the connector with wires to the deflection coil.6. Other components through which the deflection current
flows.
Note: This re-soldering is advised to prevent bad connections due to metal fatigue in solder connections, and is therefore only necessary for television sets more than two years old.• Route the wire trees and EHT cable correctly and secure
them with the mounted cable clamps.• Check the insulation of the Mains/AC Power lead for
external damage. • Check the strain relief of the Mains/AC Power cord for
proper function, to prevent the cord from touching the CRT, hot components, or heat sinks.
• Check the electrical DC resistance between the Mains/AC Power plug and the secondary side (only for sets that have a Mains/AC Power isolated power supply): 1. Unplug the Mains/AC Power cord and connect a wire
between the two pins of the Mains/AC Power plug. 2. Set the Mains/AC Power switch to the "on" position
(keep the Mains/AC Power cord unplugged!). 3. Measure the resistance value between the pins of the
Mains/AC Power plug and the metal shielding of the tuner or the aerial connection on the set. The reading should be between 4.5 Mohm and 12 Mohm.
4. Switch "off" the set, and remove the wire between the two pins of the Mains/AC Power plug.
• Check the cabinet for defects, to prevent touching of any inner parts by the customer.
2.2 Maintenance Instructions
We recommend a maintenance inspection carried out by qualified service personnel. The interval depends on the usage conditions:• When a customer uses the set under normal
circumstances, for example in a living room, the recommended interval is three to five years.
• When a customer uses the set in an environment with higher dust, grease, or moisture levels, for example in a kitchen, the recommended interval is one year.
• The maintenance inspection includes the following actions:
1. Perform the “general repair instruction” noted above.2. Clean the power supply and deflection circuitry on the
chassis.3. Clean the picture tube panel and the neck of the picture
tube.
2.3 Warnings
• In order to prevent damage to ICs and transistors, avoid all high voltage flashovers. In order to prevent damage to the picture tube, use the method shown in figure “Discharge picture tube”, to discharge the picture tube. Use a high voltage probe and a multi-meter (position VDC). Discharge until the meter reading is 0 V (after approx. 30 s).
Figure 2-1 Discharge picture tube
• All ICs and many other semiconductors are susceptible to electrostatic discharges (ESD �). Careless handling during repair can reduce life drastically. Make sure that, during repair, you are connected with the same potential as the mass of the set by a wristband with resistance. Keep components and tools also at this same potential. Available ESD protection equipment: – Complete kit ESD3 (small tablemat, wristband,
connection box, extension cable and earth cable) 4822 310 10671.
– Wristband tester 4822 344 13999. • Be careful during measurements in the high voltage
section. • Never replace modules or other components while the unit
is switched "on". • When you align the set, use plastic rather than metal tools.
This will prevent any short circuits and prevents circuits from becoming unstable.
2.4 Notes
2.4.1 General
• Measure the voltages and waveforms with regard to the chassis (= tuner) ground (�), or hot ground (), depending on the tested area of circuitry. The voltages and waveforms shown in the diagrams are indicative. Measure them in the Service Default Mode (see chapter 5) with a colour bar signal and stereo sound (L: 3 kHz, R: 1 kHz unless stated otherwise) and picture carrier at 475.25 MHz for PAL, or 61.25 MHz for NTSC (channel 3).
• Where necessary, measure the waveforms and voltages with (�) and without () aerial signal. Measure the voltages in the power supply section both in normal operation (�) and in stand-by (�). These values are indicated by means of the appropriate symbols.
• The semiconductors indicated in the circuit diagram and in the parts lists, are interchangeable per position with the semiconductors in the unit, irrespective of the type indication on these semiconductors.
• Manufactured under license from Dolby Laboratories. “Dolby”, “Pro Logic” and the “double-D symbol”, are trademarks of Dolby Laboratories.
V
E_06532_007.eps250304
Safety Instructions, Warnings, and Notes EN 5SK4.0L CA 2.
2.4.2 Schematic Notes
• All resistor values are in ohms, and the value multiplier is often used to indicate the decimal point location (e.g. 2K2 indicates 2.2 kohm).
• Resistor values with no multiplier may be indicated with either an "E" or an "R" (e.g. 220E or 220R indicates 220 ohm).
• All capacitor values are given in micro-farads (μ= x10-6), nano-farads (n= x10-9), or pico-farads (p= x10-12).
• Capacitor values may also use the value multiplier as the decimal point indication (e.g. 2p2 indicates 2.2 pF).
• An "asterisk" (*) indicates component usage varies. Refer to the diversity tables for the correct values.
• The correct component values are listed in the Spare Parts List. Therefore, always check this list when there is any doubt.
2.4.3 Lead-free Soldering
Due to lead-free technology some rules have to be respected by the workshop during a repair:• Use only lead-free soldering tin Philips SAC305 with order
code 0622 149 00106. If lead-free solder paste is required, please contact the manufacturer of your soldering equipment. In general, use of solder paste within workshops should be avoided because paste is not easy to store and to handle.
• Use only adequate solder tools applicable for lead-free soldering tin. The solder tool must be able:– To reach a solder-tip temperature of at least 400°C.– To stabilize the adjusted temperature at the solder-tip.– To exchange solder-tips for different applications.
• Adjust your solder tool so that a temperature of around 360°C - 380°C is reached and stabilized at the solder joint. Heating time of the solder-joint should not exceed ~ 4 sec. Avoid temperatures above 400°C, otherwise wear-out of tips will increase drastically and flux-fluid will be destroyed. To avoid wear-out of tips, switch “off” unused equipment or reduce heat.
• Mix of lead-free soldering tin/parts with leaded soldering tin/parts is possible but PHILIPS recommends strongly to avoid mixed regimes. If this cannot be avoided, carefully clear the solder-joint from old tin and re-solder with new tin.
2.4.4 Alternative BOM identification
In September 2003, Philips CE introduced a change in the way the serial number (or production number, see Figure 2-2) is composed. From this date on, the third digit in the serial number (example: AG2B0335000001) indicates the number of the alternative BOM (Bill of Materials used for producing the specific model of TV set). It is possible that the same TV model on the market is produced with e.g. two different types of displays, coming from two different O.E.M.s.By looking at the third digit of the serial number, the service technician can see if there is more than one type of B.O.M. used in the production of the TV set he is working with. He can then consult the At Your Service Web site, where he can type in the Commercial Type Version Number of the TV set (e.g. 28PW9515/12), after which a screen will appear that gives information about the number of alternative B.O.M.s used.If the third digit of the serial number contains the number 1 (example: AG1B033500001), then there is only one B.O.M. version of the TV set on the market. If the third digit is a 2 (example: AG2B0335000001), then there are two different B.O.M.s. Information about this is important for ordering the correct spare parts!For the third digit, the numbers 1...9 and the characters A...Z can be used, so in total: 9 plus 26 = 35 different B.O.M.s can be indicated by the third digit of the serial number.
2.4.5 Practical Service Precautions
• It makes sense to avoid exposure to electrical shock. While some sources are expected to have a possible dangerous impact, others of quite high potential are of limited current and are sometimes held in less regard.
• Always respect voltages. While some may not be dangerous in themselves, they can cause unexpected reactions that are best avoided. Before reaching into a powered TV set, it is best to test the high voltage insulation. It is easy to do, and is a good service precaution.
Directions for UseEN 6 SK4.0L CA3.
3. Directions for Use
You can download this information from the following websites:http://www.philips.com/supporthttp://www.p4c.philips.com
Index of this chapter:4.1 Set Disassembly4.2 Assembly / Board Removal4.3 Set Re-assembly Note: Figures below can deviate slightly from the actual situation, due to the different set executions.
4.1 Set Disassembly
Follow the disassemble instructions in described order.
4.1.1 Rear Cover Removal
Warning: disconnect the mains power cord before you remove the rear cover. 1. Remove all the fixation screws of the rear cover. 2. Now, pull the rear cover backwards and remove it.
Figure 4-1 Rear Cover removal
4.2 Assembly / Board Removal
4.2.1 Side I/O Panel removal
Figure 4-2 Side-I/O panel removal
1. Disconnect the sidepanel cable from the mono carrier and remove the cable from it’s strain reliefs.
2. Then, remove the two fixation screws (1) and remove the board.
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H_17210_025.eps130607
1
Mechanical InstructionsEN 8 SK4.0L CA4.
4.2.2 Power Switch removal
Figure 4-3 Power switch removal
1. From the mono carrier disconnect the main power, the degaussing coil, the speakers, the front control panel, the side I/O panel and deflection coil cables. Release the main power cord and the side I/O panel cable from it’s strain reliefs. Pull out the mono carrier and place it sidewards. This enables the removal of the power switch panel.
2. Then, remove the two fixation screws (1) of the power switch panel and remove the board.
4.2.3 Front Control Panel removal
Figure 4-4 Front Control Panel removal
1. From the mainboard disconnect the main power, the degaussing coil, the speakers, the front control panel, the side I/O panel and deflection coil cables. Release the main power cord and the side I/O panel cable from it’s strain reliefs. Pull out the mono carrier and place it sidewards. This enables the removal of the front control panel.
2. Then, remove the four fixation screws (1) of the Front Control panel and remove the board.
4.3 Set Re-assembly
To re-assemble the whole set, do all processes in reverse order. Be sure that, before the rear cover is mounted:• The mains cord is positioned correctly in its guiding
brackets (make sure that the strain reliefs are replaced in its correct position and that it will function correctly!).
• All wires/cables are returned in their original positions.
H_17210_026.eps080607
1
H_17210_027.eps080607
1 1 1
1
Service Modes, Error Codes, and Fault Finding EN 9SK4.0L CA 5.
5. Service Modes, Error Codes, and Fault Finding
Index of this chapter:5.1 Test Points5.2 Service Modes5.3 Error Codes5.4 Fault Finding
5.1 Test Points
See chapter 6 "Block Diagrams, Testpoint Overviews, and Waveforms". Perform measurements under the following conditions:• Service Default Mode.• Video: colour bar signal.• Audio: 3 kHz left, 1 kHz right.
5.2 Service Modes
This chassis does not contain a specific Service Mode. Service and Alignment of the TV set can be done via the Factory Mode by the service technician, see further down in this manual.
5.3 Error Codes
Not applicable.
5.4 Fault Finding
5.4.1 Power on Failure
Check whether the power supply is working properly and whether the values of voltages normal. If those are correct, check line transistor and transformer are working properly or check fore or back line for defects.
5.4.2 Horizontal Deflection Transistor Defective: No Picture, No Sound.
To find the fault for a defect horizontal deflection transistor please check the following items:• Over voltage to breakdown.• Over current to burn.• Horizontal frequency too low.• Horizontal drive inefficient.
5.4.3 Picture Interference
• Check if the signal line contact is good.• Change Tuner if is necessary.
5.4.4 Can't find any TV program
Checking method: Check the closed circuit from tuner to picture decoder IC to detect whether there are defective components. Or check whether the resistance of R117, R118, R203 and R204 has increased which also could cause the problem.
5.4.5 No Good Picture or Double Image
Check the correctness of the signal from IF1/IF2 to Q101 and relevant circuit. In this case the problem can be Q101 and/or SAW101.
5.4.6 Picture not or incorrect Coloured
• Check the circuit from IC201 to R.G.B. three gun circuit.• Check the IC soldering and relevant circuitry on physical
damage or check for defective capacitors.
5.4.7 Picture with Horizontal Bright Line and Sound
Check both supply voltages of vertical IC301 and relevant circuitry on correctness. Also check the vertical synchronizing signal from IC201.
5.4.8 Remote Control Malfunction
Check the voltage on pin 64 of IC201. The normal value should be 5.15 V. If this is correct check front control panels soldering connections. If can't be solved, check the remote control, crystal or transmitting diode of the remote control are in good condition.
5.4.9 No Sound
Check power supply of sound IC (IC402) and relevant circuitry. Check as well the BTSC board, check the power supply of IC801 and relevant output signal pins 21 and 27 of this IC. Do not exclude IC801 and/or IC402 to be defective. If needed replace the speakers.
5.4.10 Poor Sound Quality
Check the sound system after searching the channel which should set at NTSC or AUTO. If still has problem, check accompany board circuit on chassis good or not.
Service Modes, Error Codes, and Fault FindingEN 10 SK4.0L CA5.
Personal Notes:
E_06532_012.eps131004
Block Diagrams, Test Point Overviews, and Waveforms EN 11SK4.0L CA 6.
6. Block Diagrams, Test Point Overviews, and Waveforms
Block Diagram Chassis
1 2 3 4 65
A
B
C
D
654321
D
C
B
A
TDA93XX/N3
SCART 1Y
R G B
U V
V in
REAR AV SIDE AV S-VHS
C in
AV in
ANTENNA
FS TUNER
IF AMP SAW101IF MTS/A2/NICAM
AV
-SW
405
2 L
R
AV OUT
V L RY CV L RRLV
AM
P-TD
A98
41/9
842/
9843
L
R
TON
E C
ON
TRO
L
KEY CONTROL
R
G
B
IK
24C08
CQ0765
V AMP TDA4863AJ
H DRIVE
SPL
SPR
CRT BOARD
21" CRT
V--DY
H--DY
R OUT
G OUT
B OUT
SW
90V
-260
V
DEG COIL
POWER
SCL
SDA
PHILIPS UOC2
+110V FOR B+
+43V
+12V FOR MAIN+20V FOR AMP
CV
BS
OU
T
SLIM PART
63624
AV3 SW
109
PWM CONTROL AUDIO VOLMUTE
AUDIO OUTSCART ID
710445
I/O
6 KEY
L R
AV1 SWAV2 SW
112
V215
145
3
13
AUDIO
3DD5023
4 11FM
+8V FOR UOC
SCL
SDA
SCL
SDA
-12V+12V
SCLSDA
A1A1
A2A2
A3A3
B
D
E
G
M
K
A6A6
A7A7
A5A5
A8A8
IF
A4
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EN 12SK4.0L CA 6.Block Diagrams, Test Point Overviews, and Waveforms
Schematic Overview Chassis
H_17450_006.eps210907
Circuit Diagrams and PWB Layouts EN 13SK4.0L CA 7.
7. Circuit Diagrams and PWB Layouts
Mono Carrier: Power Supply
1 2 3 4
A
B
C
D
4321
D
C
B
A
H_17450_009.eps210907
POWER SUPPLYA1 A1
5800 A3P610-00
Stand by
EN 14SK4.0L CA 7.Circuit Diagrams and PWB Layouts
Mono Carrier: Line Deflection
1 2 3 4
A
B
C
D
4321
D
C
B
A
LINE DEFLECTIONA2 A2
5800 A3P610-00
Q450C2482
R3272K7
C321
2200pF
T302
500V
C322
220pF500V
C323
1uF160V
Q302D5032
R45433
C3157n2
C3166n8
D302BY228
2KV 2KV
C312273J/630V
D311RU4B
L303 400uH
R322
6.8 2W
R323
75K
50V
Q303F630
R324
100
D3071N4148
M
B+
R301
0.33
SCREEN
FOCUS
T301
FLYBACK
HEATER
+V
ABL
R325
100
R403NC
!
!
! !
!
!
HY
R302
0.33 -V
2W
R250
2.2K
R316
4.7K
D3068V2
C31027PF/ 50V
AFC
R4014K7
!!
C3142n7 /2KV
L432790mH
C477
4.7uF
+8V_VCC
AFCAFC
FOCUS
SCREEN
564
C317
L30234mH
C318
274J/400V
C325364J/400
L301105mH
R3211K
C319
681
1
6
2
9
3
4
8
10
180V
1234
T0CRT
GN
D
HE
AT
ER
CR
T G
ND
180V
R3154.7K
R3140.22 2W
D3082158
470P
F 50
0VC300
4.7UF 250V
C309
5GND
R312
1K
C3080.1U
D205
1N4148 C2384.7U/ 50V
R310
560K
D309
1N4148R318680
R317
220
D305
MTZJ20
BCLEHT
R319
3.9K
7
R2451K
H-out
EW
+8V_VCC
CN301
!56
+V
-V
+135V_VCC
+48V_VCC
EH
T
BC
L
H_17450_010.eps210907
Circuit Diagrams and PWB Layouts EN 15SK4.0L CA 7.
Mono Carrier: Frame Deflection
1 2 3 4
A
B
C
D
4321
D
C
B
A
R309
270 1W
C307
0.1uF/100V
100V
R255
100
R305
1K8
470pF
D303
BA158
C3041000uF/ 25V
0.1uF
CN301
!
!
D302
BA158
470pF
0.1uFC3031000uF/ 25V
INP
7
INN
6
V o
ut5
VP4
-13V
4
Vp3
pum
p3
VP3
-2
VP1
+13
V1
IC301
TDA4863AJ
56
R3081K8
2W
R256
100
C306
0.1uF/100V
R3071
R306
220/2W
C305
100uF/50V
D304BA158
C216CAP
C215CAP
+8V
R32610KD301
C302
Q301
C301
R303 C302C301
R304
220/1W
EHT
VDRB
VDRA
v+
v-
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FRAME DEFLECTIONA3 A3
5800 A3P610-00
EN 16SK4.0L CA 7.Circuit Diagrams and PWB Layouts
Mono Carrier: Tuner IF
1 2 3 4 5
A
B
C
D
E
54321
E
D
C
B
A
A101
38.9MHz
C108
100pF
R1051.5K
SCL
SDA
+8V_VCC
+33V_BT
38MHZ
AGC
NC
SAS
SCL
SDA
NC
BM+5V
GND
BT+33V
IF R106
68
C107
10n
Q101KSC1674C
R109
1.2K
R111470
R1084.7KC109
10n
R113
220
R116
2.2K
R11010
R11210
C1090.01U
R1071.2K
LC101
NTSC-M
Q102
C1815
C2040.01U
R11410K
31.9M
10K
R115
Q103
C1815
R213100
SYSTEM 1
SYSTEM
R215
680C10310U/16V
L101
J
1UH
SIF SAW102
C70347/50V
IC703
UPC574
R703
10K
R10215K
TUNER AGC
C10
510
0U/1
6V
C10
410
0U/1
6VL201
10UH
R10127K
SYSTEM
SYSTEM1
SIF SAW102
+33V_BT
+8V_VCC
TUNER AGC
SDA
SCL
H_17210_004.eps110607
TUNER IFA4 A4
5800 A3P610-00
Circuit Diagrams and PWB Layouts EN 17SK4.0L CA 7.
Mono Carrier: AV Switch
1 2 3 4
A
B
C
D
4321
D
C
B
A
GNDVI
VOVIG
VOGBL
V / RBG
RGNDNC
Y / GNC
GGNDOPT
U / BL in
BGNDGND
LOR in
RO 12
34
56
78
910
1112
1314
1516
1718
1920
21
P701 21PIN
ZD701
8V2
D834
8V2
D832
8V2
8V2
D833
8V2
R83775
D80775
R83675
R835
75
R701
47K
1
2
3
4
5
E6
Vee7
Vss8 9
10
11
12
13
14
15
Vdd 16
01
23 0
12
3
IC801HEF4052
Q802
C1815
R848
100K
R845
750
R846
750
Q801
C1815
R849
100K
ZD706
8V2ZD709
8V2
ZD711
8V2
R780
100K
R777
100K
R778
75
P702
S-VHS
V IN
L IN
R IN
P701
Y
U
V
P701
V out
L out
R out
P701
R817100K
R818
100KR80775
V IN
L IN
R IN
P701
R80375
SIDE AV IN
REAR AV IN
R731820
J743
10K
AV OUT
YUV
AUDIO SWITCH
C816
10uF
C811
10uF
C810
10uF
+8V_VCC
C777
10uF
C772
10uF
C774
10uF
C242
10uF
C IN
SIDE L SIDE R
REAR R
REAR L
C717
10uF
L
AUDOUT
A2
A1
4052 3
TONE 32
C8211U/ 50V
1U/ 50V
C820
C80410uF
C80710uF
OUT ROUT L
AUDIO R outAUDIO L out
VIDEO OUT
BLANK
OPTION
V / R in
Y / G in
U / B in
CVBS
Y C
R8312.7K
TONE 26
TONE 7
4052 13
Q8031815
Q8041815
Q8051815
C822
0.1U
CVBS/Y
R835
10K
R836
10K
AV1
AV2
R837
10K
AV3
R829
10
R8424.7K
C82310U/16V
R84
1
4.7K
R84
04.
7K
R85
41.
5K
R85
21.
5K
R85
51.
5K
Q204
C1815
R80275
R251
1K
R152
100
R151
300
R8311.2K
R8321.2K
R828100K
R826100K
R827100K
R825100K
C190
10U/16V
R821100K
R834100K
R839
1K
R838
1K
TONE 1
TONE 30
TONE 28
R83475
+8V
+8V
+8V
D802
L803
C805
CAP
R847
100
+8V +8V
L804
C806CAP
R844
100
R815
1K
R816
1K
C812
1000D8028V2
L806
L805
R833100K
R822100K
+8VC813
1000
+8V
R830100K
R824100K
+8V
C81
7C
AP
A1
A2
+8V_VCC
AUDOUT
C IN
U / B in
Y / G in
V / R in
OPTION
BLANK
CVBS/Y
AV2
AV1
CVBS+8v
4052 3
4052 13
H_17210_005.eps070607
AV SWITCHA5 A5
5800 A3P610-00
Personal Notes:
E_06532_012.eps131004
EN 18SK4.0L CA 7.Circuit Diagrams and PWB Layouts
Mono Carrier: Tone Control (Optional)
6 7 8 9 10
A
B
C
D
E
F
G
A
B
C
D
E
F
G
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5
CN902VCC
GND
MUTE1
GND
MUTE2
R
L
D902
4148
D903
4148
R912
1K
C1815
Q902
R91651K
R917100K
R911100K
R914510
C90110U
C902
10U
R90110K
R902
10K
C9030.47U
R90351K
Q901C1815
R9071K
R904
100K
R917
820
R90351K
R920270
C90347U
C910
0.22U
C512
1000U
C913
0.01U
R905
1K
C914
0.1U
Q902
R913510
510R912
R908100K
R909100K
C909
100U
D9018V2
C?
CAP
C?
WOODER 8OHM
IC901TFA9800
0.22U C908
C907
0.22U
PG
SG
OUT2
OUT1MUTE
IN-
IN+
SVRR
VC
C
3
2
5
1
4
6
7
9
8
WEIGHT TONE
H_17210_006.eps110607
TONE CONTROLA6 A6
5800 A3P610-00
Circuit Diagrams and PWB Layouts EN 19SK4.0L CA 7.
Mono Carrier: Audio Amplifier
1 2 3 4
A
B
C
D
4321
D
C
B
A
C426
106E
SPL
4 10W
SPR
4 10W
CN760
SW2
SW2
L OUT
Q401
C1815
D401 IN4148
R411
47K
R4093K3MUTE
+8V_VCC
12
34
56
78
9
1
2
1
2
IC402TFA9842AJ
C424
222D
R OUT
R770 1K
R769 1K
VOL
L out
+22V_VCC
RI RO
Rout
Lout
L inR41075K
50V
R4083K3R253
15KC43110uF/ 16V
D761
1N4148
C432100uF
R40710K
C4301uF
Q402A1015
C750
1uF
C7491uF
C42847uF/ 50V
C429220uF/25V
C4331000uF/ 25V
C4341000UF/ 25V
4052 13
4050 3
+8V_VCC
MUTE
VOL
+22V_VCC
H_17210_007.eps110607
AUDIO AMPLIFIERA7 A7
5800 A3P610-00
EN 20SK4.0L CA 7.Circuit Diagrams and PWB Layouts
Mono Carrier: CPU & Decoder
1 2 3 4
A
B
C
D
4321
D
C
B
A
STANDBY1
SCL2
SDA3
AV3/TUNING4
SCART ID5
KEY6
VOL7
MUTE8
Vss C/P9
LED10
PAL/NTSC11
VssA12
SECPLL13
Vp214
DECDIG15
PH2LF16
PH1LF17
GND318
DECBG19
AVL/EWD20
VDRB21
VDRA22
IF123
IF224
IREF25
VSC26
TUNER AGC27
AUDEEM/SIF128
DECSDEM/SIF229
GND230
SNDPLL/SIFAGC31
AVL/REFO32 H. OUT 33
FBISO 34
AUDEXT/QSSO 35
EHTO 36
PLL IF 37
IFVO/SVO 38
Vp1 39
CVBSINT 40
GND1 41
CVBS/Y IN 42C IN 43
AUDOUT/AMOUT 44
BLANK 45R / V IN 46
G / Y IN 47
B / U IN 48BCL IN 49
BLANKING 50
R OUT 51G OUT 52
B OUT 53
VddA 54VpE 55
VddC 56
OscGnd 57XTAL IN 58
XTAL OUT 59
RESET 60
VddP 61
AV1 62
AV2 63
IRin 64
IC201
TDA83731
1
2
3
4
5
SAW101SW02B
C210 220nF
C209 2200pC208 4n7
+
C211
1uF/50V
R245
15K
L201 10uH+8V
C218
1U/ 50V + C217
0.1U
C2070.22UF
X20112MHz
C23033pF
C22933pF
+3.3VL202
10uH
+
C2330.01u
+C2310.01U
C23410u/16v
C2322.2U/ 50V
L20310uH
C2130.1U/63V
R214
39K
C2512.2U/ 50V
C2241.5nF
C2213n3
R234
3.3K
R235
3.3K
R239 100
R241100
R240 100
GND
R242 10K
+8V
ZD1048V2 1
2345
BLRGB
C239 0.022U
R247
33K
R425
27K D2048V2
D2028V2
D2038V2
C240 0.022U
C241 0.022U
R24322K
Q202
C1815
Q203C1815
GND
GND
R224
100R223180
L206
6.8uH
Z201XT-6. 5
Q201C1815
Z202XT-6. 0
Z204XT-4. 5
GND
R2274K7
R2264K7
GND
Z203XT-5. 5
WP
1
n.c.
2
A2
3
Vss
4
Vdd
8
PTC
7
SCL
6
SDA
5IC202
24C08
R204 100
R206
100
C203
0.01U
R20
53.
3K
R20
33.
3K
C227
47uF/16V
R20
23.
3K
R231
2.2K R229
390
C246
0.1U/63V
R219 47
R218
10K
1 2 3 4 5
LED
KEY 5V IR
GN
D
BCL
BLANK
V / R in
Y / G in
U / B in
C IN
CVBS/Y IN
R22147
R31127K
C202
100pF
C201
100pF
D2068V2
+3.3V
C2204.7uF
R217
100
CN102
R725
10K
8V
AUDIO OUT
EHT
AFC
H-out
R312
3K3
SYSTEM
SYSTEM
STANDBY
SCL
SDA
VOL
EW
VDRB
VDRA
IF
AGC
1
2
3
4
5
SAW102Q9362M
C222
10uF
SIF
NICAMNO NICAM
+5V_VCC
R21
03.
3K
SAW101
SAW102
PAL
NTSC
1
C2190.022U
+ C24510U/16V
R228100
R230100
CVBS
R20
83.
3K
C226
100U/10V
C2500.01U
MUTE
C212
0.01U
C206
10U/16V
C2142.2U/50V
L20410uH
C2360.01u
C23510u/16v
C35247U/16V
C244
100U/16V
C243
0.01U
L205
10uH
R220100K
R465
560K
C205
0.01U
AV3R2
073.
3k
10UH
C223 C216
3.3K
R220
5K1
+5v
BCL
U / B in
Y / G in
V / R in
BLANK
AUDIO OUT
C IN
CVBS/Y IN
A2
A1
+5V_VCC
8v
EHT
AFC
H-out
AU
DEX
T
+3.3v
SCL
SDA
MUTE
AV3
VOL
SYSTEM
EW
VDRB
VDRA
IF
SYSTEM 1
CVBS
STANDBY
AGC
SIF
H_17210_008.eps070607
CPU & DECODERA8 A8
5800 A3P610-00
Circuit Diagrams and PWB Layouts EN 21SK4.0L CA 7.
Layout Mono Carrier (Top Side)
H_17210_009.eps0806075800 A3P610-00
EN 22SK4.0L CA 7.Circuit Diagrams and PWB Layouts
Layout Mono Carrier (Bottom Side)
H_17210_010.eps0806075800 A3P610-00
Circuit Diagrams and PWB Layouts EN 23SK4.0L CA 7.
Keyboard Control Panel
6 7 8 9 10
A
B
C
D
E
F
G
A
B
C
D
E
F
G
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5
123
M001
R710
180
1 2 3 4 5
KEYBOARD CIRCUIT
LED
SW005
MENU
KEY 5V IR
LED001
LED
SW006
SLEEP
SW007
MUTE
SW008
TV/ AV
SW003
VOL-
SW002
PRO+
SW004
VOL+
SW001
PRO-
GN
D
R711
220
R712
330
R713
470
R714
820
R715
1.5K
R716
4.7K
R717RES
R***100
C***10U
R**
1K
KEYBOARD CIRCUIT
D DKEYBOARD CONTROL
H_17210_011.eps0806075800 D1SL7P-61
EN 24SK4.0L CA 7.Circuit Diagrams and PWB Layouts
Layout Keyboard Control Panel (Top Side)
Layout Keyboard Control Panel (Bottom Side)
H_17210_012.eps0806075800 D1SL7P-61
H_17210_013.eps0806075800 D1SL7P-61
Circuit Diagrams and PWB Layouts EN 25SK4.0L CA 7.
Main Switch Panel
H_17210_014.eps0806075800 E1SL7P-61
MAIN SWITCHE ELayout Main Switch (Top Side)
H_17210_015.eps0806075800 E1SL7P-61
EN 26SK4.0L CA 7.Circuit Diagrams and PWB Layouts
Side A/V Panel
Layout Side A/V Panel
5800 G1SL7P-61
G GSIDE AV
H_17210_016.eps080607
5800 G1SL7P-61
TOP SIDE
BOTTOM SIDE
H_17210_017.eps080607
Circuit Diagrams and PWB Layouts EN 27SK4.0L CA 7.
BTSC Panel
H_17450_005.eps210907
K K
Layout BTSC Panel (Top Side)
Layout BTSC Panel (Bottom Side)
H_17450_001.eps200907
H_17450_002.eps200907
EN 28SK4.0L CA 7.Circuit Diagrams and PWB Layouts
Slim EW Panel
H_17210_018.eps0806075800 M3P610-00
M MSLIM DEFLECTIONLayout Slim EW Panel
H_17210_019.eps0806075800 M3P610-00
Circuit Diagrams and PWB Layouts EN 29SK4.0L CA 7.
Sub Woofer Panel (Optional)
SUB WOOFER
H_17210_020.eps0806075800 Z3P610-00
Z Z
EN 30SK4.0L CA 7.Circuit Diagrams and PWB Layouts
Layout Sub Woofer Panel
H_17210_021.eps0806075800 Z3P610-00
Personal Notes:
E_06532_012.eps131004
Alignments EN 31SK4.0L CA 8.
8. Alignments
Index of this chapter:8.1 General Alignment Conditions8.2 Hardware Alignments8.3 Software Alignments
8.1 General Alignment Conditions
8.1.1 Default Alignment Settings
Perform all electrical adjustments under the following conditions:• Power supply voltage: 230 VAC / 50 Hz (± 10%). • Connect the set to the mains via an isolation transformer
with low internal resistance.• Allow the set to warm up for approximately 20 to 30
minutes.• Measure voltages and waveforms in relation to chassis
ground (with the exception of the voltages on the primary side of the power supply).Caution: never use heatsinks as ground.
• Test probe: 100: 1, Ri > 10 Mohm, Ci < 3.5 pF.• Use an isolated trimmer/screwdriver to perform
alignments.
8.2 Hardware Alignments
Note: The only hardware alignment in this TV set is the adjustment of the main voltage (B+), see below.
8.2.1 Main Voltage Adjustment
In order to adjust the main voltage, connect a voltage meter to the cathode of diode D610, and adjust VR601 to a voltage of 110 V ±0.3 V.
8.3 Software Alignments
Put the set in its MENU mode (factory mode) as follows (see also figure “Factory Mode” on the next page):• Press the keys [i+], “smart sound” and “smart picture” to
enter the factory menu.• Press the keys [i+] again and “ADJUST” appear on screen.• Press the number keys to enter the adjust page, press /
� to choose the items that to be adjusted, Press � /� to adjust its value.
• Press [i+] to quit factory mode.The different alignment parameters are described further on.
8.3.1 Rf AGC Voltage Adjust
1. Provide a 294.25 MHz, 60 dB half colour bar signal.2. Enter factory mode and press key 1. 3. Measure tuner AGC point voltage, adjust AGC item till the
voltage is 2.4 V, or till picture noise just disappears. (typical value is at 27).
8.3.2 Focus Fine Adjust
1. Provide a cross-hatch pattern signal.2. Set state to “Rich” mode. 3. Adjust flyback transformers Focus knob till picture is clear.
8.3.3 Screen Voltage Adjust (Key 0).
1. Set picture to “Standard” mode, without signal input.2. Press the keys [i+], “Smart sound” and “Smart picture” to
enter the factory menu. When in “B/W BALANCE” page, press “mute” on the RC. There will be a level light line displays.
3. Adjust flyback transformers Screen knob till the level bright line just can be seen, press PROG+ and turn to other factory menu.
4. When in the light-line screen, CUT R and CUT G can be adjusted if needed with the following RC key mapping:To increase /decrease CUT R (See table 8-1)To increase /decrease CUT G (See table 8-2)
5. Press “MUTE” key to return to the “B/W BALANCE” page.
Table 8-1 To increase /decrease CUT R
Table 8-2 To increase /decrease CUT G
8.3.4 Horizontal Adjustment (key 1)
1. Provide a 50 Hz monoscope pattern.– Press the keys [i+], “Smart sound” and “Smart picture”
to enter the factory menu. – Press the keys [i+] again and “ADJUST” appear on
screen. 2. Press key “0” and adjust “HPH” to set picture horizontal
centre to CRT horizontal centre.
8.3.5 Vertical & YUV/RGB Horizontal Adjust (key2)
1. Provide a 50 Hz cross hatch signal, set TV to standard mode. Adjust VSL so that half picture of the pane cross appears. The picture’s vertical line is just at the bottom of the half picture. Adjust VSL to make the centre of the picture’s vertical line and the kinescope are in superposition.
2. Adjust VSI to obtain picture’s vertical re-display ratio more than 90%.
3. Provide a 60 Hz cross hatch signal, do step 1 and 2 again to adjust.
4. If necessary, fine adjust above items.
8.3.6 OSD Position (Key 4)
1. Menu OSD position adjustment: Provide a 50/60 Hz cross hatch pattern. Put the set in MENU mode. – Press the keys [i+], “Smart sound” and “Smart picture”
to enter the factory menu. – Press the keys [i+] again and “ADJUST” appear on
screen. 2. LOGO position adjustment: Provide a 50/60 Hz cross
hatch pattern. Put the set in MENU mode. Press key 7 to enter the factory mode. Adjust XMIN, XMAX, YMIN and YMAX, to obtain LOGO at the centre up to 1/3 of CRT screen.
3. Press key 4 to enter the factory mode. Adjust VP and HP item, to obtain menu OSD at the centre of CRT screen.
4. Provide a RGB or YUV cross hatch signal, set the TV in the standard mode, adjust “YUV OSD HS” 5RGH till picture horizontal centre is at the CRT centre (optional).
Function CUT R+ CUT R-
RC key 1 4
Function CUT G+ CUT G-
RC key 2 5
AlignmentsEN 32 SK4.0L CA8.
Figure 8-1 Software Alignments
Main Page
B/W BALANCE 2 ECIVRES1 ECIVRES0 ECIVRESDRI R 32 FREQUENCY 60HZ S LOV COU>EDOMPIHS W OFFDRI G 26 H PH 36-TV A 04LOV LWP/COU72CGDRI B 28 V SL 35 A 05NIAG ONOM1DEEPS CGCUT R 32 V 05NIAG OERETSM57.54FI32HS CUT G 31 V RI&CRH62IS C 94NIAG PASFF0BT 32 V 05NIAG VAFFOMETSYS ITLUM91CS CT 32 WP45HTDIW WE L UPNI 95898 T 1COOL DR -2 EW PARA 46 XDT 1 VOL 10 45COOL DG -1 UP CORNER 29 XDT COUNT 30 VOL 25 55COOL DB +2 LO CORNER SUSVM82 A VOL 50 80COOL CR +1 H -PARA FFOTAM51 VPL 80 90COOL CG +0 H-BOW 1BPB34 VOL 100 100WARM DR +10 EW TRAPE 0SWMF3GNIROC32WARM DG +7 FFOTPO LVANOOSO44MOOZWARM DB -1WARM CR +0WARM CG -1
ADJUST
ECIVRES3 ECIVRES 4 SERVICE 5AV OPT 0 V OERETSEDOM-CSTB84P
S-CSTB04PH4GFC VA T 02 AV OFF Y S-CSTB04SH DSO VU P 0Y 9IL-CSTB0L DSOFFODVD/CV 411A-CSTBNOENOTFLAHSBVCTUO OEDI
18070-2YKS-REBYSCSTN5 NIP 0 BTSC-A2 6PIN 7 VOL1 BTSC-TC 3PIN 8 LED BTSC-STS ONMUTEPIN MODE OFF BTSC-ADJ StartCC HP 13 MTS DETECT 50CC LINE 21 MTS FILTER 20CC DELAY 12 W:00 00 40 09 0E 86 03 HCO ON R: EE E6OSVE OFF D: MONO ST SAP
SERVICE 6 8 ECIVRES7 ECIVRESPOW 3IRB BUS2 YUV DR +0
2NOC BUS8MIT NO REWOP YUV DG -303LOC BUSNOBKA YUV DB +0
Description of the factory menu Storage address Display string Range (Index value) Default SK4.0L CA
Alignments EN 35SK4.0L CA 8.
AV Luminance delay 0x0ca(bit7-bit4) YDL AV 0-15 4 2
Maximum brightness 0x056 MAX BRI 0-63 63 63
Middle brightness 0x021 MID BRI 0-63 18 18
Maximum contrast 0x058 MAX CON 0-63 63 63
Middle contrast 0x022 MID CON 0-63 15 15
Line-level of brightness 0x02d SC.BRI 0-63 8 8
Direct key “8”
YUV offset according to “DRI R” value of TV, white point R of YUV. 0x012 YUV DR (-32) - (+31) +0 +0
YUV offset according to “DRI G” value of TV, white point G of YUV 0x013 YUV DG (-32) - (+31) +0 +0
YUV offset according to “DRI B” value of TV, white point B of YUV 0x014 YUV DB (-32) - (+31) +0 +0
YUV offset according to “CUT R” value of TV, black level offset R of YUV 0x015 YUV CR (-32) - (+31) +0 +0
YUV offset according to “CUT G” value of TV, black level offset G of YUV 0x016 YUV CG (-32) - (+31) +0 +0
English OSD switch 0x0eb (bit3) ENGLISH OFF ON ON ON
Spanish OSD switch 0x0eb (bit2) SPANISH OFF ON ON ON
French OSD switch 0x0eb (bit1) FRANCE OFF ON OFF OFF
Portuguese OSD switch 0x0eb (bit0) PORTUGUESE OFF ON ON ON
External Y (Luminance) input gain during YPRPB.OFF: gain 0 dB reduced, ON: gain 3 dB reduced
0x0ee (bit4) YGN OFF ON OFF ON
Cathode drive level 0x0ca (bit3-bit0) CATHE 3 3
EHT tracking mode 0x0ea (bit6) HCO ON ON
Black current measuring lines in overscan 0x0e9 (bit2) OSVE OFF OFF
Manual INIT E2PROM INITEEP
Key “Smart sound”
BASS set value in Voice state 0x064 BASS 30 30
TREBLE set value in Voice state 0x065 TREBLE 50 50
SURROUND set value in Voice state 0x066 SURROUND OFF OFF
BASS set value in Music state 0x067 BASS 55 55
TREBLE set value in Music state 0x068 TREBLE 60 60
SURROUND set value in Music state 0x069 SURROUND OFF OFF
BASS set value in Theatre state 0x06a BASS 80 80
TREBLE set value in Theatre state 0x06b TREBLE 70 70
SURROUND set value in Theatre state 0x06c SURROUND ON ON
Key “Smart image”
Bright set value in Soft state 0x036 BRIGHT 55 55
Contrast set value in Soft state 0x037 CONTRAST 50 50
Color set value in Soft state 0x038 COLOR 45 45
Sharpness set value in Soft state 0x039 SHARP 45 45
Sharpness set value in Soft state of YUV 0x070 YUV SHARP 50 50
COLOR TEMP set value in Soft state 0x03a COLOR TEMP WARM WARM
Bright set value in Rich state 0x03b BRIGHT 70 70
Contrast set value in Rich state 0x03c CONTRAST 85 85
Color set value in Rich state 0x03d COLOR 70 70
Sharpness set value in Rich state 0x03e SHARP 70 70
Sharpness set value in Rich state of YUV 0x071 YUV SHARP 80 80
COLOR TEMP set value in Rich state 0x03f COLOR TEMP COOL COOL
Bright set value in Natural state 0x031 BRIGHT 50 50
Contrast set value in Natural state 0x032 CONTRAST 75 75
Color set value in Natural state 0x033 COLOR 50 50
Sharpness set value in Natural state 0x034 SHARP 50 50
Sharpness set value in Natural state of YUV 0x06f YUV SHARP 50 50
COLOR TEMP set value in Natural state 0x035 COLOR TEMP NORMAL NORMAL
Description of the factory menu Storage address Display string Range (Index value) Default SK4.0L CA
Circuit Descriptions, Abbreviation List, and IC Data SheetsEN 36 SK4.0L CA9.
9. Circuit Descriptions, Abbreviation List, and IC Data Sheets
Index of this chapter:9.1 Introduction9.2 The various circuits9.3 Abbreviation List9.4 IC Data Sheets
9.1 Introduction
The SK4.0A CA is a CRT TV for the year 2007, based on the 3P61 platform. In this chapter, only a general description of the various circuits is given. For more detailed information, see the circuit diagrams in this manual.
9.2 The various circuits
9.2.1 Tuner
The function of the tuner is to select the channel to be received and suppress the interference of neighboring channels, to amplify the high frequency signal, to improve the receiving sensitivity and SNR, and to generate a PIF signal through frequency conversion.
9.2.2 IF Channel
The IF Channel mainly ensures the sensitivity and selectivity of the complete TV set. The IF AMP integrated in the UOCIII is made up of a three-stage dual-differential amplifier with a gain value above 70dB, a SNR of 55dB and a bandwidth of 7 MHz. The video demodulation circuit is made from the built-in PLL Sync Detector. The spectrum of the demodulation carrier is unitary and it is not affected by the content of the video signal. The tuner features stable receptivity while the signal output from the video detector features high fidelity. The built-in PLL circuit of the UOCIII generates a 38.0 MHz or 38.9 MHz demodulation reference signal for the sync detector to demodulate the video signal; this is called “PLL sync demodulation”.
9.2.3 Sound Channel
An external ceramic filter is used to select the second SIF signal for the sound channel of UOCIII from the signal output of the video detector. The audio signal is obtained after limiting amplification and demodulation by the intermediate frequency detector for the SIF signal, and then the audio signal is fed to the BTSC stereo/SAP decoder TDA9850. From that it is output to the audio amplifier TFA9842, which drives the speakers to provide the sound. The intermediate frequency detector and volume-control attenuator that are built in the UOCIII are set and adjusted via the CPU.
9.2.4 BTSC stereo/SAP decoder
Input Level AdjustmentThe composite input signal is fed to the input level adjustment stage. The control range is from -3.5 to +4.0 dB in steps of 0.5 dB. The maximum input signal voltage is 2 V (RMS).
Stereo DecoderThe output signal of the level adjustment stage is coupled to a low-pass filter which suppresses the baseband noise above 125 kHz. The composite signal is then fed into a pilot detector/pilot cancellation circuit and into the MPX demodulator. The main L + R signal passes a 75 ms fixed de-emphasis filter and is fed into the dematrix circuit. The decoded sub-signal L - R is sent to the stereo/SAP switch. To generate the pilot signal the stereo demodulator uses a PLL circuit including a ceramic
resonator. The stereo channel separation is adjusted by an automatic procedure to be performed during set production. The stereo identification can be read by the I2C-bus. Two different pilot thresholds (data STS = 1; STS = 0) can be selected via the I2C-bus.
SAP DemodulatorThe composite signal is fed from the output of the input level adjustment stage to the SAP demodulator circuit through a 5fH band-pass filter. The demodulator level is automatically controlled. The SAP demodulator includes an internal field strength detector that mutes the SAP output in the event of insufficient signal conditions. The SAP identification signal can be read by the I2C-bus.
Noise DetectorThe composite input noise increases with decreasing antenna signal. This makes it necessary to switch stereo or SAP off at certain thresholds. These thresholds can be set via the I2C-bus. With ST0 to ST3 the stereo threshold can be selected and with SP0 to SP3 the SAP threshold. A hysteresis can be achieved via software by making the threshold dependent of the identification bits STP and SAPP.
Mode SelectionThe stereo/SAP switch feeds either the L - R signal or the SAP demodulator output signal via the internal dbx noise reduction circuit to the dematrix/switching circuit. Different switch modes provided at the output pins OUTR and OUTL are available.
dbx DecoderThe dbx circuit includes all blocks required for the noise reduction system in accordance with the BTSC system specification. The output signal is fed through a 73 ms fixed de-emphasis circuit to the dematrix block.
SAP OutputIndependent of the stereo/SAP switch, the SAP signal is also available at pin SAP. At SAP, the SAP signal is not dbx decoded. The capacitor at SDE provides a recommended de-emphasis (150 ms) at SAP.
Integrated FiltersThe filter functions necessary for stereo and SAP demodulation and part of the dbx filter circuits are provided on-chip using transconductor circuits. The required filter accuracy is attained by an automatic filter alignment circuit.
9.2.5 CRT Drive Circuit
In the driver circuit, both the voltage and current of the R/G/B signal are amplified, after which the CRT drive circuit modulates the cathode beam current of the CRT. The R/G/B signal input into the driver circuit is of negative polarity.
9.2.6 Power Supply Circuit
The function of the power supply circuit is to supply various stabilized operating voltages and to provide protections against excessive voltages and currents.
Circuit Descriptions, Abbreviation List, and IC Data Sheets EN 37SK4.0L CA 9.
9.3 Abbreviation List
2CS 2 Carrier SoundA2 Commonly known as 2 Carrier Sound
algorithm that installs TV channels directly from a cable network by means of a predefined TXT page
ADC Analogue to Digital ConverterAFC Automatic Frequency Control: control
signal used to tune to the correct frequency
AGC Automatic Gain Control: algorithm that controls the video input of the feature box
AM Amplitude ModulationANC Automatic Noise Reduction; One of
the algorithms of Auto TVAP Asia PacificAR Aspect Ratio: 4 by 3 or 16 by 9AV Audio VideoAVL Automatic Volume Level controlB/G Monochrome TV system. Sound
carrier distance is 5.5 MHzBCL Beam Current LimiterCBA Circuit Board Assembly (or PWB)CFR Carbon Film ResistorComPair Computer aided rePairCRT Cathode Ray Tube (or picture tube)CVBS Composite Video Blanking and
SynchronisationCVI Component Video InputD/K Monochrome TV system. Sound
carrier distance is 6.5 MHz. D= VHF-band, K= UHF-band
DAC Digital to Analogue ConverterDC Direct CurrentDC-filament Filament supply voltageDFU Directions For Use: owner's manualDPL Dolby Pro LogicDRAM Dynamic RAM; dynamically refreshed
RAMDVD Digital Versatile DiscEEPROM Electrically Erasable and
Programmable Read Only MemoryEHT Extreme High Tension; the voltage
between the cathode and the shadow mask that accelerates the electrons towards the screen (around 25 kV)
EMI Electro Magnetic Interference; Leakage of high-frequency radiation from a transmission medium
EU EUropeEW East West, related to horizontal
deflection of the setEW-DRIVE East -West correction drive signal.EXT EXTernal (source), entering the set by
SCART or by cinches (jacks)FBL Fast Blanking: DC signal
accompanying RGB signalsFE Front End; Tuner and RF part togetherField Each interlaced broadcast FRAME is
composed of two Fields, each Field consists of either Odd or Even lines
Filament Filament of CRTFM Field Memory / Frequency ModulationFrame A complete TV picture comprising all
lines (625/525)FTV Flat TeleVisionG GreenH H_sync to the module H-DRIVE Horizontal Drive
H-FLYBACK Horizontal FlybackH-OUT H_sync output of the module /
sync pulse from large signal deflectionHW HardwareI Monochrome TV system. Sound
carrier distance is 6.0 MHz. VHF- and UHF-band
I2C Inter IC bus (also called IIC)I2S Inter IC Sound busIC Integrated CircuitIF Intermediate FrequencyIIC Inter IC bus (also called I2C)Interlaced Scan mode where two fields are used
to form one frame. Each field contains half the number of the total amount of lines. The fields are written in “pairs”, causing line flicker.
IO In/OutIR Infra RedL Left audio channelL/L’ Monochrome TV system. Sound
carrier distance is 6.5 MHz. L' is Band I, L is all bands except for Band I
LATAM LATin AMericaLED Light Emitting DiodeLOT Line Output Transformer (also called
FBT); The transformer in which the EHT is generated
MOFR Metal Oxide Film ResistorMOSFET Metal Oxide Semiconductor Field
Effect TransistorMPX MultiPleXNAFTA North American Free Trade
Association: Trade agreement between Canada, USA and Mexico
NC Not ConnectedNICAM Near Instantaneously Companded
Audio Multiplexing; This is a digital sound system, mainly used in Europe
NTC Negative Temperature Coefficient, non-linear resistor (resistance decreases if temperature increases)
NTSC National Television Standard Committee. Colour system used mainly in North America and Japan. Colour carrier NTSC M/N = 3.579545 MHz, NTSC 4.43 = 4.433619 MHz (this is a VCR norm, it is not transmitted off-air)
NVM Non Volatile Memory; IC containing data such as alignment values, preset stations
OB Option ByteOC Open CircuitOP OPtion byteOSD On Screen DisplayP50 Project 50; Communication protocol
between TV and peripheralsPAL Phase Alternating Line; Colour system
mainly used in West Europe (colour carrier= 4.433619 MHz) and South America (colour carrier PAL M= 3.575612 MHz and PAL N= 3.582056 MHz)
PCB Printed Circuit Board (or PWB)PLL Phase Locked Loop; Used for e.g.
FST tuning systems. The customer
Circuit Descriptions, Abbreviation List, and IC Data SheetsEN 38 SK4.0L CA9.
can directly provide the desired frequency
Progressive Scan Scan mode where all scan lines are displayed in one frame at the same time, creating a double vertical resolution.
PTC Positive Temperature Coefficient, non linear resistor (resistance increases if temperature increases)
PWB Printed Wiring Board (also called PCB or CBA)
QSS Quasi Split SoundR Right audio channel / RedRAM Random Access MemoryRC Remote Control transmitterRC5 (6) Remote Control system 5 (6), the
signal from the remote control receiver RF Real Flat (picture tube) or Radio
Frequency RGB Red, Green, and Blue colour space;
The primary colour signals for TV. By mixing levels of R, G, and B, all colours (Y/C) are reproduced
RGBHV Red, Green, Blue, Horizontal sync, and Vertical sync
RMS Root Mean Square valueROM Read Only MemorySAP Secondary Audio Program; Generally
from sync signalsS/C Short CircuitSCL Serial Clock signal on I2C busSD Standard DefinitionSDA Serial Data line of I2C busSDRAM Synchronous DRAMSIF Sound Intermediate FrequencySMC Surface Mounted ComponentSMD Surface Mounted DeviceSMPS Switched Mode Power SupplySND SouNDSRAM Static RAMSTBY STandBYSVHS Super Video Home SystemTBD To Be DefinedTXT Teletext; TXT is a digital addition to
analogue TV signals that contain textual and graphical information (25 rows x 40 columns). The information is transmitted within the first 25 lines during the Vertical Blank Interval (VBI)
µC MicrocontrollerUOC Ultimate One ChipµP MicroprocessorUV Colour difference signalsV V_syncV-BAT Main supply for deflection (usually 141
V)VA Vertical AcquisitionVBI Vertical Blanking Interval; Time during
which the video signal is blanked when going from bottom to top of the display
VCR Video Cassette RecorderVGA Video Graphics ArrayVIF Video Intermediate FrequencyWE Write Enable control lineWST World System TeletextXTAL Quartz crystalY Luminance signal
9.4 IC Data Sheets
This section shows the internal block diagrams and pin layouts of ICs that are drawn as “black boxes” in the electrical diagrams.
Circuit Descriptions, Abbreviation List, and IC Data Sheets EN 39SK4.0L CA 9.
9.4.1 Diagram A1, W6554A, (IC601)
Figure 9-1 Block Diagram and Pin Configuration
H_17210_039.eps120607
Circuit Descriptions, Abbreviation List, and IC Data SheetsEN 40 SK4.0L CA9.
9.4.2 Diagram A1, P412, (IC602)
Figure 9-2 Block Diagram and Pin Configuration
H_17210_039.eps120607
Circuit Descriptions, Abbreviation List, and IC Data Sheets EN 41SK4.0L CA 9.
9.4.3 Diagram A3, TDA486x, (IC301)
Figure 9-3 Block Diagram and Pin Configuration
Block diagram of TDA4865AJ
RS1 CS1 CF
RP
C1
R5
D1
TDA4865AJ
R3
R2R1
R6
C2
7
INP INN
deflectioncoil
fromdeflection controller
VOUT GND VP2
VN VP
VP1VP3
6 5 4 3 2 1
DIFFERENTIALINPUTSTAGE
VERTICALOUTPUT
FLYBACKGENERATOR
REFERENCECIRCUIT
THERMALPROTECTION
Pin configuration for DBS7P(TDA4865AJ)
TDA4865AJ
VP1
VP3
VP2
GND
VOUT
INN
INP
1
2
3
4
5
6
7
Block Diagram
Pin Configuration
H_17210_038.eps120607
Circuit Descriptions, Abbreviation List, and IC Data SheetsEN 42 SK4.0L CA9.
Figure 9-4 Block Diagram
H_17210_035.eps120607
Circuit Descriptions, Abbreviation List, and IC Data Sheets EN 43SK4.0L CA 9.
9.4.4 Diagram A5, 4052, (IC102)
Figure 9-5 Block Diagram and Pin Configuration
Block Diagram
Pin Configuration
H_17210_041.eps120607
Circuit Descriptions, Abbreviation List, and IC Data SheetsEN 44 SK4.0L CA9.
9.4.5 Diagram A7, TDA9842, (IC402)
Figure 9-6 Block Diagram and Pin Configuration
Block Diagram
Pin Configuration
VOLUMECONTROL
SHORT-CIRCUITAND
TEMPERATUREPROTECTIONVREF
0.5VCC
VCC
VCC
9
4IN1
IN2
OUT1
OUT2
SVR
CIV
VC
1
3
7
8
2
6
5
GND
TFA9842AJ
60kΩ
60kΩ
TFA9842AJ
OUT2
CIV
IN1
GND
SVR
VC
OUT1
IN2
VCC
2
1
3
4
5
6
7
8
9
H_17210_033.eps110607
Circuit Descriptions, Abbreviation List, and IC Data Sheets EN 45SK4.0L CA 9.
9.4.6 Diagram A7, TDA9850, (IC801)
Figure 9-7 Block Diagram and Pin Configuration
compositebasebandinput
++C2
13 14 15
C5
16
Q1 ceramicresonator
17
DEMATRIX+
MODESELECT
+C6
18
+C7
19
DE-EMPHASIS
L + R
L − R/SAP
OUTL
OUTR
27
21STEREO DECODER
SAP without DBX23
C822
R1
C3C4
LOGIC, I2C-TRANSCEIVER
MAD28
7
stereomonoSAPtoaudioprocessing
98
SDA SCL
SUPPLY
+C18
246
+C19
1210
VrefVCAPVCC
SAPDEMODULATOR
+C16
5
C15
4
INPUTLEVEL
ADJUST
+ 11
C1
NOISEDETECTOR
STEREO/SAPSWITCH
C17
26
TDA9850
STEREOADJUSTDBX
+
C14
3
C13
R3
R2
1 2
+
32
+
31
+
30
+
29
C12 C11 C10 C9
+
25
+
20
CL CR
only duringadjustment
TDA9850
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
VEO CS
CW
CTS
CTW
CND
CSDE
CL
CR
CSS
CMO
Vref
VEI
CNR
CM
CDEC
LTUODNGA
SAP
OUTR
CER
MAD
DGND
SDA
SCL
VCC
COMP
VCAP
CP1
CP2
CPH
CADJ
Block Diagram
Pin Configuration
H_17450_004.eps200907
Circuit Descriptions, Abbreviation List, and IC Data SheetsEN 46 SK4.0L CA9.
9.4.7 Diagram A8, OM837x (IC201)
Figure 9-8 Block Diagram
H_17210_034.eps130607
Block Diagram
Circuit Descriptions, Abbreviation List, and IC Data Sheets EN 47SK4.0L CA 9.
Figure 9-9 Pin Configuration
H_17210_029.eps130607
Pin Configuration
Circuit Descriptions, Abbreviation List, and IC Data SheetsEN 48 SK4.0L CA9.
Figure 9-10 Pin Configuration
H_17210_030.eps130607
Circuit Descriptions, Abbreviation List, and IC Data Sheets EN 49SK4.0L CA 9.
Figure 9-11 Pin Configuration
H_17210_031.eps130607
Pinning
Circuit Descriptions, Abbreviation List, and IC Data SheetsEN 50 SK4.0L CA9.
9.4.8 Diagram A8, TDA937x (IC201)
Figure 9-12 Block diagram and pin configuration
SOUNDTRAP
TUNERAGC
+8V
HOUT V-DRIVE
ROGOBO
BCLIN
BLKIN
CVBS/Y
IFIN
C
SDASCL
VISION IFALIGNMENT-FREE
PLL DEMOD.AGC/AFC
VIDEO AMP.
VIDEO SWITCHVIDEO IDENT.
VIDEO FILTERS
PAL/NTSC
DECODER
LUMA DELAY
PEAKING
BLACK STRETCH
BASE-BAND
DELAY LINE
H/V SYNC SEP.
H-OSC. + PLL
H-DRIVE
2nd LOOP
H-SHIFT
V-DRIVE +
CONTR/BRIGHTNOSD/TEXT INSERT
CCC
WHITE-P. ADJ.
80C51 CPU
I2C-BUSTRANSCEIVER
ROM/RAMCLOSED CAPTION
ACQUISITION
MEMORY
OSD
DISPLAY
R G B BL
Y
U
VH
V
REF
ENHANCED
VST PWM-DAC
VS
T O
UT
I/O PORTS
I/O P
OR
TS (4
x)
+3.3 V
RE
SE
T
LED
OU
T (2
x)
AD
C IN
(4x)
VP
E
EW GEOMETRYGEOMETRY
EHTO EWD R/V G/Y B/U BL
RGB/YUV INSERT
R G B
REF
CVBS
SYNC
H
V
COR
RGB/YUV MATRIXSATURATION
YUV/RGB MATRIX
QSS SOUND IF
AGC
QSS MIXER
AM DEMODULTOR
SIF
IN
QS
SO
/AM
OU
T/A
UD
EX
T
AU
DO
UT/
AM
OU
T
IFVO/SVO
(REFOUT)
Block Diagram
Pin Configuration
H_17450_012.eps210907
handbook, halfpage
XXX
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
TDA
937X
PS/
N2
serie
s (S
DIP
-64)
P1.3/T1
P1.6/SCL
P1.7/SDA
P2.0/TPWM
P3.0/ADC0/PWM0P3.1/ADC1/PWM1
P3.2/ADC2/PWM2P3.3/ADC3/PWM3
VSSC/P
P0.5
P0.6
VSSAI.C.
VP2
DECDIG
HOUT
FBISO
PH2LF
PH1LF
GND3
AVL/EWD/
VDRBVDRA
IFIN1
IFIN2
EHTO
IREF
VSC
AGCOUTAUDEEM/SIFIN1
DECSDEM/SIFIN2
PLLIF
IFVO/SVO
DECBG
CVBS1
VP1
C
CVBS/Y
GND1
AUDOUT
AVL/SNDIF/REFO/
BLKIN
BOGO
RO
BCLIN
R2/V/PRIN
B2/U/PBIN
G2/YIN
INSSW2
VDDA
VPE
VDDC
OSCGNDXTALIN
XTALOUTRESET
VDDP
P1.0/INT1
P1.1/T0
P1.2/INT0
GND2 AUDEXT/QSSO
SNDPLL/SIFAGC
AUDEEM
DECSDEM
Circuit Descriptions, Abbreviation List, and IC Data Sheets EN 51SK4.0L CA 9.
9.4.9 Diagram A8, 24C08 (IC202)
Figure 9-13 Block Diagram
H_17210_035.eps120607
Circuit Descriptions, Abbreviation List, and IC Data SheetsEN 52 SK4.0L CA9.
Figure 9-14 Pin Configuration
Pin Configuration
H_17210_036.eps120607
Spare Parts List EN 53SK4.0L CA 10.
10. Spare Parts List
Set Level
Various
CRT 9965 100 07893 21HUAFEI C.P.T A51ERU191X03/
Speaker A 9965 100 04936 Loudsp. 8Ω 10WSpeaker B 9965 100 04936 Loudsp. 8Ω 10WSW601 9965 100 04935 MPS.SDDF-3-03