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Colour LCD Television TX-32LE7FATX-32LE7LATX-32LE7PA
TX-32LE7F/SATX-32LE7P/SA
TX-26LE7FATX-26LE7LATX-26LE7PA
TX-26LE7F/SATX-R32LE7A TX-R26LE7A
Specifications(Information in brackets [ ] refers to model 26´´)
1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit.
2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed.
3. After servicing, make the following touch current checks to prevent the customer from being exposed to shock hazards. 4. Always ensure panel TKP0E16001 is correctly replaced before returning to customer (see Fig.1).
Touch-Current Check 1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check. 2. Connect a measuring network for touch currents between each exposed metallic part on the set and a good earth
ground such as a water pipe, as shown in Fig. 2. 3. Use Leakage Current Tester (Simpson 228 or equivalent) to measure the potential across the measuring network. 4. Check each exposed metallic part, and measure the voltage at each point. 5. Reserve the AC plug in the AC outlet and repeat each of the above measure. 6. The potential at any point (TOUCH CURRENT) expressed as voltage U1 and U2, does not exceed the following values:
For a. c.: U1 = 35 V (peak) and U2 = 0.35 V (peak); For d. c.: U1 = 1.0 V, Note:The limit value of U2 = 0.35 V (peak) for a. c. and U1 = 1.0 V for d. c. correspond to the values 0.7 mA (peak) a. c. and 2.0 mA d. c. The limit value U1 = 35 V (peak) for a. c. correspond to the value 70 mA (peak) a. c. for frequencies greater than 100 kHz.
7. In case a measurement is out of the limits specified, there is a possibility of a shock hazard, and the equipment should be repaired and rechecked before it is returned to the customer.
Fig. 2
Fig. 1
3
TOAPPLIANCESEXPOSEDMETAL PARTS
Resistance values in ohms ( )
VR0=500
RS=1500 CS=0.22 F
10k
0.022 FU1
COLDWATER PIPE (EARTH GROUND)
V: Voltmetr or oscilloscope (r.m.s. or peak reading)
Measuring network for TOUCH CURRENTS
Input resistance: 1MInput capacitance: 200pFFrequency range: 15Hz to 1MHz and d.c.respectively
NOTE – Appropriate measures should be taken to obtain the correct value in case of non-sinusoidal waveforms
U2 (V)
Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor "chip" components. The following techniques should be used to help reduce the incidence of component damage caused by electrostatic discharge (ESD).
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap, which should be removed for potential shock reasons prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge build up or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES devices. 4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static (ESD
protected)" can generate electrical charge sufficient to damage ES devices. 5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices. 6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it.
(Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive material).
7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed. CautionBe sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) sufficient to damage an ES device).
There are special components used in this equipment which are important for safety. These parts are marked by in schematic diagrams, exploded views and replacement parts list. It is essential that these critical parts should be replaced with manufacturer’s specified parts to prevent shock, fire, or other hazards. Do not modify the original design without permission of manufacturer.
IMPORTANT SAFETY NOTICE
4
About lead free solder (PbF) Note: Lead is listed as (Pb) in the periodic table of elements.In the information below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder.The Lead Free Solder used in our manufacturing process and discussed below is (Sn+Ag+Cu).That is Tin (Sn), Silver (Ag) and Copper (Cu) although other types are available.
This model uses Pb Free solder in it’s manufacture due to environmental conservation issues. For service and repair work, we’d suggest the use of Pb free solder as well, although Pb solder may be used. PCBs manufactured using lead free solder will have the PbF within a leaf Symbol
stamped on the back of PCB.
Caution Pb free solder has a higher melting point than standard solder. Typically the melting point is 50 ~ 70 °F (30~40°C)
higher. Please use a high temperature soldering iron and set it to 700 ± 20 °F (370 ± 10 °C). Pb free solder will tend to splash when heated too high (about 1100 °F or 600 °C).
If you must use Pb solder, please completely remove all of the Pb free solder on the pins or solder area before applying Pb solder. If this is not practical, be sure to heat the Pb free solder until it melts, before applying Pb solder.
After applying PbF solder to double layered boards, please check the component side for excess solder which may flow onto the opposite side. (see Fig.3)
Suggested Pb free solder There are several kinds of Pb free solder available for purchase. This product uses Sn+Ag+Cu (tin, silver, copper) solder. However, Sn+Cu (tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) solder can also be used. (see Fig.4)
Fig.3
Fig.4
5
Service Hints How to remove the Pedestal assembly
Lay the main unit face down. (see Fig.5)
Remove the 4 fixing screws and the pedestal assembly. (see Fig.6)
How to remove the backcover
Remove the 16 [14] fixing screws. (see Fig.7)
Fig.5
Fig.6
SCREWS
SCREWS
Fig.7
6
SCREWS
SCREWS
Chassis Board Layout
Location of Lead Wiring To find the Part Number of required wire in Replacement Parts List click on the wire name in red box
Board Name Function A-Board Main Board B-Board Tuner H-Board AV3 Terminal
Key Control Key Control K-Board Mains Input, Power Switch P-Board Power Supply V-Board Remote Receiver, LED IR, Bats
P-BOARD
V-BOARD
K-BOARD
A-BOARD
B-BOARD
KEY CONTROL
H-BOARD
7
A13 – P4A8 – V2
A10
A2 – PAN
P3 – PAN K3 – P1
K1
TU001
A6 – H2
A12 – H1
A5 A6A7
P3
CN1
A2
V2
A12
A12 – H1
A6 – H2 [26´´]
[26´´]
A5 – SPA5 – SP[26´´]
P2
Setting Inspection Voltage Confirmation
8
Confirm the following voltages: A board Normal mode Test point Position Voltage Description
Self CheckSelf-check is used to automatically check the bus lines and hexadecimal code of the TV set. To enter Self-Check mode, keep pressing the STATUS button on the remote control and press the down (-/v) button on the TV set. To exit Self Check, switch off the TV set at the power button.
Adjustment Method How to enter Service 1 Set the Bass to maximum position, set the Treble to minimum position then keep pressing the INDEX button on the
remote control and press the down button (-/v) on the TV set, this will place the TV set into the Service Mode 1.
Key Command Press the RED / GREEN buttons to step up / down through the functions. Press the YELLOW / BLUE buttons to alter the function values, to alter White Rasters use +/- buttons Press the OK button after each adjustment has been made to store the required values. To exit the Service Mode, press the "N" button.
Keep adjusting sequence: DVCO, Sub-Contrast, other items.
Item Setting indication Note: All setting values are approximate Settings / Special features
Sub-Contrast Sub-Contrast 32
Receive a 80% white level Philips Pattern with correct sound system (B/G, D/K) via aerial input. For Sub-
Contrast alignment press "Blue" button, wait until the figure colour is changed from red to black colour.
Press the OK.
DVCO DVCO63
Receive a 80% white level Philips Pattern via aerial input. For DVCO alignment press "Blue" button, wait
until the figure colour is changed from red to black colour. Press the OK.
Highlight Lowlight For correct setting see White Balance Adjustment
Sub-Brightness Sub-Brightness 0 Optimum setting.
White Balance Adjustment
Instrument Remote Control LCD WB meter (Minolta CA-210 or equivalent)
Condition Switch on the TV Set. Enter Service1. Step down to Highlight line and keep the aging time more than 20 minutes.
Procedure After aging time above set White Raster No.12 for Highlight and No.4 for Lowlight Press the OK button
to store. Put Minolta Sensor to the center of the LCD Panel with 25mm gap between Minolta Sensor and LCD Panel. Adjust "x"
and "y" values by changing Red and Blue values. Press OK button to store setting.
High 12 0410 0410 0410 Low 4 0064 0064 0064
High 12Low 4
Item Value x 2850 150 Highlight y 2940 150 x 2860 150 Lowlight y 2900 150
10
A-B
OA
RD
TN
P0E
A00
9
P-B
OA
RD
TN
P0E
P00
9
P4
A13
A10
5 K
EY
BU
TTO
N
A8
V2
V-B
OA
RD
TNP
0EV
009
A2
LCD
-PA
NE
L
P3
K-B
OA
RD
TN
P0E
K00
9P
1K
3
H-B
OA
RD
TN
P0E
H00
9
A6
H2
A12
H1
A5
A5
SP
-LS
P-R
Wiri
ng d
iagr
am
11
JK36
00
AV
3
K1
P2
A7
JK50
01 H
DM
I1
A1
B-B
OA
RD
TN
P0E
A00
9 B
1
B
2 S
ER
VIC
E
MA
INS
IN
JK30
01 Y
UV
JK30
00
AV
1
JK30
50
AV
2
J
K23
00
AU
DIO
OU
T
JK
3002
AU
DIO
12
B1 13 11 10
B-B
OA
RD
TUN
ER
T
U00
1 E
NG
F770
1GF
AM
TUN
ER
CV
BS
SIF
A1 13 11 10
IC
1501
VC
T69X
YP
191
CVB
S IN
31SI
F
13,1
4 AM
IC
5003
H
DM
I REC
EIVE
R
JK50
01
HD
MI
AV2
21
PIN
SC
AR
T
11
32
67
1115
20
AV1
21
PIN
SC
AR
T
L OUT
R OUT
R IN
L IN
B IN
G IN
R IN
CVBS IN
CVBS OUT 19
RED/C IN G INB IN
L OUT R OUT
CVBS OUT
R IN
L IN CVBS IN
32
6 7
1115
20
19
LR
JK3002
V U Y
JK3001
LR
JK2300
IC
3300
A
UD
_MAT
RIX
A2
TO LCD PANEL
33AV
1 R
OU
T
32AV
1 L
OU
T
7A
V1
R IN
6AV
1 L
IN
178
31 30 9 8
177
AV1
B IN
17
6
AV1
G IN
AV1
R IN
189
AV1
CV
BS
IN
195
AV1
CV
BS
OU
T
190
AV2 CVBS IN
179
AV2
B IN
180
AV2
G IN
181
AV
2 R
ED
/C IN
AV
2 C
VB
S O
UT
21 22
4 3
MO
NIT
OR
OU
T R
MO
NIT
OR
OU
T L
YUV
R IN
YUV
L IN
I
C27
0 H
EDPH
ON
E AM
P26 25
HP
L
HP
R
H-B
OA
RD
R
L V
L
R
C Y
H2
3 5
A6 1 3
1 3
DAT
A TO
PAN
EL
1 7
188
187
194
AV
3 C
IN
AV3
Y IN
H1 31468
A12 31468
184
AV3
CV
BS
IN
174
PR
IN
172
PB IN
173
Y IN
8Bit
data
R 8
Bit
data
Bus
G 8
Bit d
ata
Bus
B 8B
it da
ta B
us
I
C25
2 A
UD
IO A
MP
I
C25
1 A
UD
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MP
28 27
SP L
4
16
SP R
4
16
SPEA
KER
L
SPEA
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R
L R
13 13
A5
4 23 1
Vide
o &
Ste
reo
Aud
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lock
Dia
gram
50-5
7
58-6
5
66-7
3
12
2728
9 10 23 24AV1 L OUT VCTP
AV1 R OUT VCTP AV1 AV2 AV3 YUV L IN
AV1 AV2 AV3 YUV R IN
A-B
OA
RD
11 10
AV
3 R
IN
AV3
L IN
F 80
0 K
1 1 4
SW 8
00K
3 1 3
MAIN IN
PC10
60
RM
1050
K-B
OA
RD
V-
BO
AR
D
V2
STBY3.3V
BA
TS
6B
14
TUN
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TU00
1
B-B
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RD
B2 1
5V
5V
LCD
PA
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A1
4
3V3
PVC
C3V
3 AV
CC
3V3
XTA
L
IC50
03
5,6,
7,13
,16,
19,2
6,76
,89,
109
,122
,134
22
,23,
35,7
4,79
,92,
94,1
05,
114,
128,
139
37,5
538
,42,
46,5
0,57
,61,
65,6
9 98 99
3V3
HD
1V8
HD
3V3
REG
HD
MI R
ECEI
VER
IC
1501
18 33 3645
,75 77
86,9
6,11
4 12
412
7,13
3,13
9,15
0,15
6 14
216
416
9 ,18
5 17
019
219
7
VSU
PAU
8V
VSU
PSIF
5V
VSU
PDIG
3,3
VVS
UPD
RI 3
,3V
VSU
PCO
M3,
3VVS
UPI
O1
3,3V
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PDIG
1,8V
VSU
PLVD
S 3,
3VVS
UPL
VDS
1,8V
VSU
PDA
C3,
3VVS
UPF
E 1,
8VVS
UPF
E 3,
3VVS
UPV
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VSU
PIO
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3V
AU
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SOR
IC50
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1381
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P0
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18,5
AU
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270
8
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AMP
STB
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3,3
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PCO
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PIO
1 3,
3VVS
UPI
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3,3V
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3,3
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UPF
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AC
3,3
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3,3V
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3VIC
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N
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L 24
V
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PDIG
1.8
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VDS
1.8V
VSU
PFE
1.8V
LCF´S Q38
03
LCF
3.3V
HD
MI
3V3
HD
IC50
00
LCF´S
3V3
PVC
C3V
3 AV
CC
3V3
XTA
L3V
3 R
EG
Q38
02
D38
06D
3807
12V
STB
Y
12V
IC38
02LC
FLC
FTU
NER
5V
LIN
EFI
LTER
LF
800
-D
801 ~
~
P11
3 LIN
EFI
LTER
LF
802
L800
14
23
IC
800
MAI
N P
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TRO
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7 9
5 3
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1
P29,
11,1
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8,10
SIG
24 V
20-2
2ST
BY
12 V
T800 1 2 3 4 7 8
910111213141516
PC80
1
PC80
0
D831
D832
IC 8
30
P31-
5
F830
Q83
0
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9,11
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lock
Dia
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13
P-B
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RD
A-B
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115
3.3V
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LCF
VSU
PAU
8V
30V
12 12
Q12
12
IR
TUN
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SDA
3,3V
33V
5VB1
B -
BO
AR
D
SCL3
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14SD
A_T
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13SC
L_TU
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S_R
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SERVICE
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RM
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D10
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83SC
L3,3
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202
AV_
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K_I
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01
AV_
LIN
K_O
UT
200
EDID
_WP_
DIS
AB
LE 1
99
AV1
IS Q
LIN
K 1
98
47H
DVS
48H
DEN
49H
CLK
84SD
A3,
3V
87H
DM
I_C
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UT
88H
DM
I_C
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N
89N
OT_
STB
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90IN
V_PS
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N
91IN
VER
TER
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92H
DM
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T
115
HD
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RST
116
HD
MI_
SMU
TE_I
NH
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159
AI_O
FF
AV1
_SLO
W 1
61
KEY
SCA
N 1
62
HD
MI_
HPD
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165
BA
CK
LIG
HT_
PWM
167
WR
EN
168
HD
HS
171
SDA
3V3
203
BU
S_R
EQU
EST
204
STB
Y_LE
D 2
08
7PR
OTE
CTI
ON
AV1
_FB
L 17
5
AV2
_FB
L 18
3
AU
DIO
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TE 2
05
160
AV2
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W
A8 4 1 2 3
IR
IC50
03SI
I902
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DM
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R
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DH
S
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DVS
27SD
A3,
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28SC
L3,3
V
31SD
A3,
3V_P
0
32SC
L3,3
V_P0
HD
MI_
5V_D
ET_P
0 34
MU
TE_O
UT
77XT
AL_
OU
T 96
XTA
L_IN
97
HD
MI_
RST
102
HD
MI_
SCD
ET 1
03H
DM
I_IN
T 10
4
D50
32
HD
MI_
5V_D
ET
HD
MI_
5V_D
ET_P
0
HD
MI_
5V_D
ET
HC
LK12
1
Q17
01LC
D P
AN
EL 5
VQ
1700
PRO
TEC
TIO
N
PRO
TEC
TIO
NPR
OTE
CTI
ON
30V
3,3V_HDMI
8V5V
STBY3,3V
HD
EN
HD
HS
HD
VS
HD
VS
HD
EN
HC
LK
IC11
20EA
RO
M
SCL 6EEPROM_SDA 5
SCL3
,3V
SDA
3,3V
CEC
_3,3
V Q
1207
Q12
08Q
1209
D12
01
Q12
17N
OT_
STB
Y
INV_
PSU
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Q38
07IN
V_O
FF
HD
MI_
INT
HD
MI_
INT
HC
LK
HD
HS
HD
MI_
RST
HD
MI_
RST
HD
MI_
SMU
TE_I
NH
IBIT
BAT
S O
FF
AV2
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W
A10 3
STB
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DQ
1213
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DIO
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BU
S_R
EQU
EST
AV_
LIN
K_I
N
AV_
LIN
K_O
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EDID
_WP_
DIS
AB
LE
AV2
_FB
L
AV1
_FB
L
WR
EN
BA
CK
LIG
HT_
PWM
HD
MI_
HPD
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KEY
SCA
N
AV1
_SLO
W
HD
MI_
SCD
ET
X500
0
MU
TE_O
UT
SDA
3,3V
SCL3
,3V
Q50
08
Q50
07
LCD
PA
NEL
SDA
3,3V
_P0
SCL3
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P0
Q50
00SD
A_3
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P0
SDA
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SCL_
P0
Q50
01H
DM
I_5V
_DET
_P0
+5V_
HD
MI_
P0
CEC
CEC
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V
Q50
02H
DM
I_H
PD_P
0H
PDT_
5V_P
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A_P
0
SCL_
P0
IC50
01C
3EB
FC00
0037
6
SCL_
P0
5SD
A_P
0 ED
ID_W
P_D
ISA
BLE
7Q
5011
EDID
_WP_
DIS
AB
LE
BA
CK
LIG
HT_
PWM
PWM
_OU
T Q
1721
HP
Mut
e
HP_
MU
TE
HD
MI_
HP_
MU
TE
HDMI_SMUTE_INHIBIT
HDMI_AUDIO_MUTE
AM
P M
ute HDMI_HP_MUTE
AUDIO _MUTE
IC25
2EN
AB
LE 7
IC25
1EN
AB
LE 7
C1B
B00
0009
98
C1B
B00
0009
98
Q11
00
Q11
01
LEVE
LSH
IFTE
R
SCL_
TUN
ER
SDA
_TU
NER
SCL
35SD
A 3
6
SCL3,3V
SDA3,3V
IC33
00
POW
ER
SUPP
LY
Q38
01
12V
Q38
04
STB
Y3.3
V
A1 7 69 8 5
HD
MI m
ute
HD
MI_
SCD
ET
HD
MI_
AU
DIO
_MU
TE
HD
MI_
MU
TE
MU
TE_O
UT
IC12
20
C0J
BA
S000
215
M
ULT
IPLE
XER
5A
V1 Q
LIN
K
2A
V2 Q
LIN
K
6,1
AV
LIN
K O
UT
8A
V LI
NK
IN
3A
V1 IS
QLI
NK
AV1
21
PIN
SC
AR
T
8 AV1_SLOW
16 FBL1
HD
MI113 CEC
16 SDA_P0
15 SCL_P0
18 +5V_HDMI_P0
AV2
21
PIN
SC
AR
T
8 AV2 SLOW
16 FBL2
10 AV1_QLINK
10 AV2_QLINK
19 HPDT_P0
P311
12
14
23P2A
7 23 1 1
32 5
23 32 5
PANEL SOS
INVERTER ON
PWM DIM
IRD
_PSU
_ON
BAT
S
STB
Y_LE
D
IRD
_LED
KEY
SCA
N
INV_
PSU
_ON
SDA
3,3V
SCL3
,3V
SDA
_TU
NER
SCL_
TUN
ER
BU
S_R
EQU
EST
Q13
80IC
1380
6H
DM
I_M
UTE
5H
DM
I_SM
UTE
_IN
HIB
IT
HD
MI_
SMU
TE_I
NH
IBIT
HD
MI_
MU
TE
Con
trol
Blo
ck D
iagr
am
A -
BO
AR
D
SCL_
3,3V
_P0
IRD
LED
SDA
3V3
AV1
IS Q
LIN
K
WR EN 7
Parts Location
NOTE: The numbers on the exploded view below refer to the exploded view section of the Replacement Parts List.
19
27
28
17
3
20
5
(UK)
15
6
16
25
11
29
24
22
8
10
30
1
15
16
2
13
21
14
4
26
7
12
[23][23]
18
9
NOTE: The numbers on the exploded view below refer to the exploded view section of the Replacement Parts List.
Components Identified by mark have special characteristics important for safety.* When replacing any of these components, use only manufacturers specified parts.
In case of ordering these spare parts, please always add the complete Model-Type number to your order.
Replacement Parts ListImportant Safety Notice
The marking (RTL) indicates that the Retention Time is Limited for this item. After the discontinuation of this assembly in production, the item will continue to be available for a specific period of time. The retention period of availability is dependent on the type of assembly, and in accordance with the laws governing part and product retention. After the end of this period, the assembly will no longer be available.
RTL (Retention Time Limited)Note:
X The marking (X) indicates that board should be exchanged for service.
DescriptionCct Ref Parts Number DescriptionCct Ref Parts Number
1. RESISTOR All resistors are carbon ¼W resistor, unless marked otherwise. Unit of resistance is OHM ( ) (k=1,000, M=1,000,000)
2. CAPACITORS All capacitors are ceramic 50V unless marked otherwise. Unit of capacitance is F unless otherwise stated.
3. COIL Unit of inductance is H, unless otherwise stated.
4. TEST POINT Test Point Position
5. EARTH SYMBOL
Chassis Earth (Cold)
Line Earth (Hot)
6. VOLTAGE MEASUREMENT Voltage is measured by a D.C. voltmeter. Measurement conditions are as follows: Power source a.c. 220V-240V, 50Hz Receiving Signal Colour Bar signal (RF) All customer controls Maximum position
7.
Indicates the Video signal path
Indicates the Audio signal path
These schematic diagrams are the latest at time of printing and are subject to change without notice.
REMARKS
a. Do not touch the hot part, or the hot and cold parts at the same time, as you are liable to a shock hazard.
b. Do not short circuit the hot and cold circuits as electrical components may be damaged. c. Do not connect an instrument, such as an oscilloscope, to the hot and cold circuits simultaneously as this may cause
fuse failure. Connect the earth of the instruments to the earth connection of the circuit being measured. d. Make sure to disconnect the power plug before removing the chassis.
NOTE
1. The Power Supply Circuit contains a circuit area, which uses a separate power supply to isolate the earth connection. The circuit is defined by HOT and COLD indications in the schematic diagram. All circuits, except the Power Circuit, are COLD.
29
IMPORTANT SAFETY NOTICE Components identified by mark have special characteristics important for safety. When replacing any of these components, use only manufacturers' specified parts.