SERVICE MANUAL Colour Television Specifications Power Source . . . . . . . . . AC220-240V, 50Hz/60Hz. Colour System . . . . . . . . PAL (AV input: PAL/NTSC4.43/NTSC/PAL-60Hz) Sound System . . . . . . . . B/G Channel Coverage . . . . . Australia VHF: 0-11, 5A UHF: 28-69 CATV: S1-S41, X, Y, Z, Z+1, Z+2 New Zealand VHF: 1-11 UHF: 21-69 CATV: S1-S41, X, Y, Z, Z+1, Z+2 Video IF . . . . . . . . . . . . . . 38.0MHz Aerial Input Impedance . . 75Ω Ext. Terminals Video inputs: Phono jack x 2 (1Vp - p, 75Ω) Audio inputs: Phono jack (L/R) x 2 (436mVrms, more than 40KΩ) Video monitor outputs: Phono jack x 1 (1Vp - p, 75Ω) Audio monitor outputs: Phono jack (L/R) x 1 (436mVrms, less than 600Ω) Speaker . . . . . . . . . 5 cm x 12 cm x 2 pcs. Sound Output (RMS) . . . . 5W + 5W Dimensions . . . . . . . . . . . 587 (W) x 458 (H) x 486 (D)mm Weight . . . . . . . . . . . . . . . approx. 21.3 Kg Specifications subject to change without notice. Chassis Series: FC3-B C3RW/C3RV FILE NO. Model No. CP21AF1V (Australia / New Zealand) Give complete “SERVICE REF. NO.” for parts order or servicing. It is shown on the rating plate at the cabinet back of the unit. This T.V. receiver will not work properly in foreign countries where the television transmission system and power source dif- fer from the design specifications. Refer to the specification table. 0 7 1 4 8 5 2 3 6 9 P▲ P▼ JXMYA -/-- P P TV/AV A B CH SCAN TIMER MENU PIC MODE SWAP BASS SURROUND REFERENCE NO. SM5110468 - + P MENU TV/AV Original Version Service Ref. No. CP21AF1V-00 (Australia) CP21AF1V-10 (New Zealand) Product Code: 111351447 - NOTE - Service Ref. No. CP21AF1V-10 is electrically the same as Service Ref. No. CP21AF1V-00. The difference between Service Ref. No. CP21AF2V-00 and CP21AF1V-10 are as follows: 1) Destination CP21AF1V-00...Australia CP21AF1V-10...New Zealand 2 ) The difference in a parts list is only a rated label.
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Embed
SERVICE MANUAL Colour Television Model No. CP21AF1Vcncms.com.au/SANYO-SMs/Consumer-Electronics/CRT-Television/cp21af1v/cp21af1v_sm.pdfSERVICE MANUAL Colour Television Specifications
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Video inputs: Phono jack x 2 (1Vp - p, 75Ω)Audio inputs: Phono jack (L/R) x 2 (436mVrms, more than 40KΩ)Video monitor outputs: Phono jack x 1 (1Vp - p, 75Ω)Audio monitor outputs: Phono jack (L/R) x 1 (436mVrms, less than 600Ω)
Speaker . . . . . . . . . 5 cm x 12 cm x 2 pcs.Sound Output (RMS) . . . . 5W + 5WDimensions . . . . . . . . . . . 587 (W) x 458 (H) x 486 (D)mmWeight . . . . . . . . . . . . . . . approx. 21.3 Kg
Specifications subject to change without notice.
Chassis Series: FC3-B
C3RW/C3RV
FILE NO.
Model No. CP21AF1V(Australia / New Zealand)
Give complete “SERVICE REF. NO.” forparts order or servicing. It is shown on therating plate at the cabinet back of the unit.
This T.V. receiver will not work properly in foreign countries where the televisiontransmission system and power source dif-fer from the design specifications. Refer tothe specification table.
0
7
1 4
85
2 3
6
9
P
P
JXMYA
-/--
P P
TV/AV
A B
CH SCAN
TIMER
MENU PIC MODE
SWAP
BASS SURROUND
REFERENCE NO. SM5110468
- + PMENUTV/AV
Original Version
Service Ref. No. CP21AF1V-00(Australia)
CP21AF1V-10(New Zealand)
Product Code: 111351447
- NOTE -Service Ref. No. CP21AF1V-10 is electrically thesame as Service Ref. No. CP21AF1V-00.The difference between Service Ref. No.CP21AF2V-00 and CP21AF1V-10 are as follows:1) Destination CP21AF1V-00...Australia
CP21AF1V-10...New Zealand2 ) The difference in a parts list is only a rated
1: An isolation transformer should be connected in thepower line between the receiver and the AC linewhen a service is performed on the primary of theconverter transformer of the set.
2: Comply with all caution and safety-related notes pro-vided on the cabinet back, inside the cabinet, on thechassis or the picture tube.
3: When replacing a chassis in the cabinet, always becertain that all the protective devices are installedproperly, such as, control knobs, adjustment coversor shields, barriers, isolation resistor-capacitor net-works etc.. Before returning any television to thecustomer, the service technician must be sure thatit is completely safe to operate without danger ofelectrical shock.
X-RADIATION PRECAUTION
The primary source of X-RADIATION in television receiver is the picture tube. The picture tube is specially con-structed to limit X-RADIATION emissions. For continued X-RADIATION protection, the replacement tube must bethe same type as the original including suffix letter. Excessive high voltage may produce potentially hazardous X- RADIATION. To avoid such hazards, the high voltage must be maintained within specified limit. Refer to this ser-vice manual, high voltage adjustment for specific high voltage limit. If high voltage exceeds specified limits, takenecessary corrective action. Carefully follow the instructions for + B1 volt power supply adjustment, and high volt-age check to maintain the high voltage within the specified limits.
PRODUCT SAFETY NOTICE
Product safety should be considered when a component replacement is made in any area of a receiver.Components indicated by mark in the parts list and the schematic diagram designate components in whichsafety can be of special significance. It is particularly recommended that only parts designated on the parts listin this manual be used for component replacement designated by mark . No deviations from resistancewattage or voltage ratings may be made for replacement items designated by mark .
-3-
Chassis Block Diagrams
Fron
tke
y
A19
01A
RC
PR
E-A
MP.
D19
10LE
D
5V-2
67
AN
T
VID
EO
IN
L-IN
(AU
DIO
)
R-IN
(AU
DIO
)
AU
DIO
MO
NIT
OR
OU
T (
LEF
T)
FR
ON
TA
V IN R
EA
RA
V IN
VID
EO IN
IC80
2M
EM
OR
Y6
5
43
SC
LS
DA
Key
in
R/C
in
3129
30
Sta
nd b
yMut
e
Mon
o/S
t.Vol
. Pro
tect
2710
8
AFT
BLKBGR
36V
9 11IF
OU
T
CP
U
1V
IFR
F A
GC
A10
1T
UN
ER
X16
1S
AW
Filt
er
R-I
N
R-OUT
MO
NO
/ST.
IC12
01A
UD
IO S
W15
V
40
SELECTED VIDEO OUT
15142
Ext
.AU
DIO
-IN
Ext
.VID
EO
-IN
RF
AG
C
FLY
BA
CK
PU
LSE
IN
AB
L
28
13
4
IF in
IF in
6
AF
T
SIF
ou
t
SIF
in
IF VC
C
VIDE
OVE
RT
V CC
RG
BV
CC
HO
R.
VC
C
5V-2
10
52
54
8 43
5
18
25
H-V
CC
9V
9V-1
85V
RC
14
15
16
17
R G B BLK
46 44
VID
EO
-OU
T
INT.
VID
EO
IN
R-O
UT
G-O
UT
B-O
UT
H-O
UT
V-O
UT
19 20 21 27 23
IC20
1IF
/VID
EO
/C
HR
OM
A
MU
TE
VO
L. L-IN
R-I
N
Rou
t
Lout
IC00
1AU
DIO
AM
P.
180V
15
IC50
1V
ER
T./D
EF.
SW
ITC
HV
R63
113
0VR
eg.
Reg
.24
V
15V
9V
5VR
CR
eg.
Reg
.
24V
Pro
tect
T43
1H
-DR
IVE
TR
AN
S.
Q43
2H
-OU
T
24V
130V
BGR
9V
H V
L902
DY
AF
CA
BL
T47
1F
BT
Q90
1C
RT
Hea
ter
HV
180V
Hea
ter
Low
B
36V
H-V
CC
9V-1
5V-2
Pro
tect
PO
WE
R S
UP
PLY
CIR
CU
IT
Pro
tect
4/5
IC80
112 28
23
19 20 21 22
SP
901
(L)
SP
902
(R)
12 7
523110
RE
AR
MO
NIT
OR
OU
T
1
73
AU
DIO
MO
NIT
OR
OU
T (
RIG
HT
)
L-IN
(AU
DIO
)
R-IN
(AU
DIO
)
2
11/1
2
2
Q43
1H
-DR
AIV
E
CR
T U
NIT
T61
1C
ON
VE
RT
ER
TR
AN
S.
2
SELECTED AUDIO OUT (EXT. L )
IIC B
us
IIC B
us
IIC B
us
VID
EO
MO
NIT
OR
OU
T
(L/R
or
L/L)
AUDIO OUT ( TV AUDIO OUT)
MAIN SIGNAL PROCESSING CIRCUIT
-4-
Chassis Block DiagramsSYSTEM CONTROL
BA
SS
EX
PA
ND
ER
ON
/OF
F (
ON
=H
IGH
)B
AS
S E
XP
AN
DE
R C
IRC
UIT
34 11 12
CO
LOU
R S
YS
TE
M O
PT
ION
INP
UT
KE
Y S
WIT
CH
INK
EY
SW
ITC
H
TV
/AV
SW
ITC
H
(TV
=H
IGH
, AV
=LO
W)
SC
L2 1 31
SD
A
PO
WE
R O
N/O
FF
PH
OT
O C
OU
PLE
(O
N=
HIG
H, O
FF
=LO
W)
IC20
1IF
/VID
EO
/ C
HR
OM
A/D
EF
.
IC80
1C
PU
QX
XA
BV
864
22 19 20 21 18 17 273
476322823 33
OS
D B
LK O
UT
(Act
ive=
Hig
h)
OS
D R
ED
OU
T(A
ctiv
e=H
igh)
OS
D G
RE
EN
OU
T(A
ctiv
e=H
igh)
OS
D B
LUE
OU
T(A
ctiv
e=H
igh)
DE
FLE
CT
ION
CIR
CU
IT
HO
RIZ
. SY
NC
IN (
AC
TIV
E=
LOW
)
VE
RT
. SY
NC
IN (
AC
TIV
E=
LOW
)
PO
WE
R P
RO
TE
CT
IN
(P
OW
ER
ER
RO
R=
LOW
)P
OW
ER
CIR
CU
ITet
c.
SCL
SDA
IC80
2M
EM
OR
Y
OS
CX
801
32.7
68K
Hz
CP
U O
SC
OU
T
CP
U O
SC
IN
LED
ON
-TIM
ER
LE
D O
UT
(ON
TIM
ER
ON
=Lo
w)
RC
SIG
NA
L IN
(AC
TIV
E=
HIG
H)
RC
PR
E-A
MP
.
24 2630
SO
UN
D V
OLU
ME
OU
T
(AC
TIV
E=
LOW
)
IC00
1A
UD
IO A
MP
.
VIF
-M O
UT
PU
T (
HIG
H=
NT
SC
3.58
, LO
W=
OT
HE
R)
A10
1F
/S T
UN
ER
AF
T S
IGN
AL
INP
UT
10
RE
SE
T IN
PU
T (
AC
TIV
E=
LOW
)13
MU
TE
OU
TP
UT
(MU
TE
ON
=H
IGH
)29
MO
NO
/ST
ER
EO
IC12
01A
UD
IO S
WIT
CH
56
SE
CA
M K
ILLE
R IN
PU
T (
HIG
H=
SE
CA
M)
IC20
01T
ELE
TE
XT
*Not
equ
ippe
d
-5-
IC Block DiagramsIC201 < IF/Video/Chroma/Def. > LA76818
1
DC
VO
L
SW F
MD
ET
23
45
6
IFA
GC
RF
AG
C
VIF
78
910
IFV
CC
5V11
1213
BU
S
PE
AK
ING
CO
RIN
GB
LAC
KS
TR
ET
CH
SY
NC
SE
P
1415
AB
L
DC
RE
ST
CLA
MP
OS
DC
ON
TR
AS
TB
RIG
HT
1617
1819
20
CO
NT
RA
ST
BR
IGH
TR
GB
MAT
RIX
OS
DS
W
DR
IVE
/OU
T-OF
F
VC
C21
2223
FS
C/
SY
NC
SW
2425
2627
VE
RR
AM
PH
OR
VC
CHV
CC
VE
RC
/D
HO
RO
UT
PH
AS
ES
HIF
TE
R
AF
C2
AF
C1
VE
RS
EP
HO
RC
/D
1/256
CO
LOR
CLA
MP
LPF
ALC
+S
WC
LAM
P
DE
MO
PAL
SW
AC
C
BP
FO
N/O
FF
DE
LAYLIN
E
SW
TR
AP
AF
TV
IDE
OD
ET
TR
AP
LIMA
MP
BP
F
SP
LL
BP
F
VID
EO
AM
P
IFID
EN
TV
IDE
O
SW
AP
C1
TIN
T
VX
OD
DS
AP
C2
DC
AD
S.
CLA
MP
VC
O
1H D
ELAY
HO
RV
CO
FB
P
2829
3031
321H
VC
C
3334
3536
3738
3940
4142
CLM
P
4344
45
CLM
P
V/C
VC
C5V
4647
4849
50
A2C
PLL
5152
5354Audio Output
FM Output/Selected Audio Output
PIF AGC
RF AGC Output
PIF Input1
PIF Input 2
IF Ground
IF Vcc
FM Filter
AFT Output
Bus Data
Bus Clock
ABL
Red Input
Green Input
Blue Input
Fast Blanking Input
RGB Vcc
Red Output
Green Output
Blue Output
fsc output or CSync output
Vertical Output
Ramp ALC Filter
Horizontal/BUS Vcc
Horizontal Output
Horizontal AFC Filter
Flyback Pulse Input
VCO IREF
Clock (4MHz) Outupt
CCD Vcc
CCD Filter
CCD/Horizontal Ground
SECAM B-Y Input (Cb Input)
SECAM R-Y Input (Cr Input)
Chroma APC2 Filter
Clamp Filter
4.43 MHz Crystal
Chroma APC1 Filter
Selected Video Output
Video/Vertical/BUS Ground
External Video Input(Y-IN)
Video/Vertical Vcc
Internal Video Input (S-C IN)
Black Level Detector
Video Output
VCO Filter
VCO Coil 2
VCO Coil 1
APC Filter
Ext. Audio Input
SIF Output
SIF APC Filter
SIF Input
IC Block Diagrams
-6-
IC201 <IF System Block Diagram> LA76818
1112
BU
SIn
terf
ace
SA
W
5 6 4 8 7
PIF
In1
PIF
In2
IF In
9V
30K
RF
AG
CO
ut
120K
IF V
CC
IFG
ND
VIF
AM
P
VIF
1V
IF 2
VIF
3
IF A
GC
D
rive
RF
AG
C2n
dIF
AG
C
RF
AG
CD
elay
6bit
IF A
GC
Def
1bit
+ - (6 V
cc)/
7
To BU
S
3
0.02
2uP
IFA
GCIF
AG
C
Dat
aC
lock
AP
CD
et
+π/
4
-π/4
Snd Det
Am
p
52S
IF.O
ut
Sou
ndTr
ap
Vid
eoD
et
Buz
zC
ance
ller
50A
PC
Filt
er33
00.
47u
+
PLL
Pul
l-in
SW
To BU
S
Lock
Det
Vid
eo.L
evel
3b
it
Am
p54
10p
SIF
.In
Sou
ndB
PF
VC
O.C
oil
VC
OC
OIL
1V
CO
CO
IL2
4849
VIF
VC
OC
hrom
aC
ount
er
B/N
INV
IFId
ent
OS
CC
/D
Am
p
SIF
. Sys
2bit
pre-
scal
ler
SIF
VC
O
500K
BP
FSIF
AP
CF
ilter
1K
0.01
u10
00p
53LI
MA
MP
FM
Det
FM
.Lev
el5b
it
Chr
oma
C/D
AP
CD
et
500K
Det
To BU
S
Chr
oma
VC
O VIF
Cou
nter
Res
etP
ulse
VC
OId
ent
VIF
.Sys
2bit
Pha
seD
etec
tor
A.M
UT
E1b
itV
OLU
ME
D/A
VO
LUM
EF
ilter
A.S
W1b
itInpu
tS
elec
tV
OLU
ME
(AT
T)
-+
-+
2.5V
Am
p
FM
Gai
n1b
itD
eem
-TC
1bit
De-
emph
FM
Mut
e1
bit
2 9 46 51 1
A.F
il.D
ef1b
it
VO
LUM
E7b
it
47
VC
OA
lignm
ent
AF
T10
AF
T
Vcc 100K 100K
0.1u
VC
OF
ilter
+
0.47uAud
io.o
ut
+Aud
io in
10u
Vid
eo
Out
FM
Filt
er+
1u
FM
Out
0.01u
+
to B
US
Lin
e
+
-7-
IC Block Diagrams
Service Information
This TV set has a built-in power supply protection circuit.It is provided to protect the TV set in case of a power supply circuit malfunctions. When something abnormalityoccurs during TV reception, the TV set goes to the stand-by mode.
When an abnormality occurs during TV reception, it causes pin 27 of the CPU to go continually Low(less than0.75V) for about one second. The CPU detects that this has occurred and outputs the signal from pin 31 toswitch off the power supply lines.
Releasing the protective circuit and restoring power supply
To release the protective circuit and restore power supply, turn the power to the TV set OFF and then ON againvia either the main power switch or the ON-OFF button on the remote control. This will work only if the powersupply trouble was temporary. If there is permanent trouble such as a damaged circuit, power cannot berestored and the circuit will have to be repaired.
Protection Circuit
IC501 < Vertical Output > LA78040/TDA9302H
ThermalProtection
-
+AMP
PumpUp
1
INV
ER
TIN
G
INP
UT
2
Vcc
3
PU
MP
UP
OU
T
4
GN
D
5
Ver
. OU
TP
UT
6
OU
TP
UT
S
TAG
E V
cc7
NO
N IN
V.IN
PU
T
IC001 < Audio AMP.> AN5274
Volume
RippleFilter
OverCurrent Thermal
ProtectionCircuit
+
-
+
-
1 2 3 4 5 6 7 8 9 10 11 12
Mut
e C
ontr
ol
Ch.
1 In
put
Vol
ume
Con
trol
Rip
ple
Rej
ectio
n
Ch.
2 In
put
Rip
ple
Filt
er
Ch.
2 O
utpu
t
Neg
ativ
e F
eedb
ack
Ch.
2
GN
D
Vcc
Neg
ativ
eF
eedb
ack
Ch.
1
Ch.
1 O
utpu
t
[1] Initializing Procedure1. Put a new memory IC.2. Turn on the TV set.3. Press and hold the TV/AV Selector on the TV set for more than 2 seconds. The following picture appears on the
screen.
4. Press the PROGRAMME UP on the TV set while the above On-Screen Display is still on the screen. The followingpicture appears on the screen.
This completes the initialization of memory IC.
Following shows the initialized contents of memory data by this procedure.- Plug & play : No executed- Inhibit data : Cancelled- Ch skip data : Cancelled- Sound volume data : 10/63 steps.- Volume Lock : OFF- Tuning Lock : OFF- Colour system : AUTO
1
CLR
- + PMENUTV/AV
-8-
Service Adjustments with Replacing Memory IC (IC802)
Note: The CPU (IC801) and memory IC (IC802) store the service adjustments data and controls data for each circuit. When the Memory IC(IC802) is replaced, some of the service adjustments should be readjusted to obtain the best performance. The necessary service adjustments are carried out by using the RC handset.Please set up the TV set with following steps [1] to [2].
Press and hold for more than 2 seconds
- + PMENUTV/AV
[2] Required Service AdjustmentsReadjust the following service adjustments.Adjustments Service Mode No. & ItemRF AGC Item 01, RF AGCHorizontal centre Item 02, H-PHAVertical size Item 04, V-SIZVertical-S correction Item 05, V-SCOVertical linearity Item 06, V-LINGray scale Item 14-17, 19-21
Further adjustment please refer to page 12 and 13.
24 B-YDN -16~+15 0NTSC B-Y DC level Adj. (Difference value over PAL.)
25 R-YDN 0NTSC R-Y DC level Adj. (Difference value over PAL.)
26 SBDC -8SECAM B-Y DC level Adj. (Difference value over PAL.)
27 SRDC -5SECAM R-Y DC level Adj. (Difference value over PAL.)
28 G-YA 0,1 0G-Y angle Adj. (The reproducibility of a colour is changed.)
29 RBGB 00~15 8 R-Y, B-Y Gain Blance Adj. (Do not change.)30 RBAG 00~15 8 R-Y, B-Y Angle Adj. (Do not change.)
31 G-YAN 0,1 0NTSC G-Y Angle Adj. (Difference value over PAL.)
32 RBGBN 0NTSC R-Y, B-Y Gain Balance Adj. (Difference value over PAL.)
33 RBAGN 0NTSC G-Y, B-Y Angle Adj. (Difference value over PAL)
34 COGV 00~03 0 Coring Adj.35 BLKS 00~03 3 Setting of Black stretch start.36 BLKG 00~03 3 Setting of Black stretch gain.37 BRTA 0,1 0 On and off of ABL.
38 BRST 0,1 0 Setting of ABL.39 BRTH 00~07 0 Setting of ABL.
(Do not change)
4041
42
43
White peak limitter.WPL 00~03 2Y Gamma setting.YGAM 00~03 0Switching of Pre-shoot and Over shoot in AV mode.PORW 0,1 0
Pre-shoot/Over shoot Adj. in AV mode.PORS 00~03 2
-16~+15
-16~+15
-16~+15
-16~+15
-16~+15
NO. ITEMDATA
RANGEINITIALSETUPDATA
DESCRIPTION
444546474849505152535455
5657
58
59
60
636465
RF Coring Gain Adj.RFCO 00~03 0Switching of RF Pre-shoot and Over shoot. PORWN 0,1 0RF Pre-shoot/Over shoot Adj. PORSN 00~03 0RF Tint Adj.TINT -16~+15 0NTSC 4.43 Tint Adj.TINT 443 -16~+15 -12RF Sharpness Adj.SHRF -32~+31 0OSD TEXT Contrast.TEXTC -128~+127 0
VOLUM 127001
16
0,1
0
1
00~2551
3400~63136
0,1 0
00~07
6667
0
68
0
69
0
701
710
720
731
74375
64
76
0
77
0
78
5
79
1
80
0
81
82
183
112
84
640
0
1
0
Volume Control Adj.00~255De emphasis TC.DEEM 00~01VIF System Switch.VIFSW 00~03SIF System Switch.SIFSW 00~03
Video Level Adj.V-LVL 00~07 4FM Level Adj.FMLVL 00~31IF TestIF-TE 0,1
IF Test-1IF-T1
IF-T2
IF-T3
61 H-FRQ Correction of Horizontal Frequency.62 FBTS Switching of H-blanking and Flyback Pulse.
COOP00~07
Setting of Colour Killer Level.HBLKL H-Blanking Control. (Left)HBLKR 00~07 H-Blanking Control. (Right)AFCRF 0,1 RF AFC Gain & Gate Adj.VSURF 0,1 RF V-Sync. Separation Adj.
CDMRF 00~07 RF V-Countdown Circuit Adj.AFCAV 0,1 AV AFC Gain & Gate Adj.VSUAV 0,1 AV V-Sync. Separation Adj.CDMAV 00~07 AV V-Countdown Circuit Adj.HLVDRF 0,1 H Lock, V Detect RF modeHLVDAV 0,1
CROSS-BW 00~03 Pattern Output.AVNCON 00~127 Contrast Adj. of the blue back in AV mode.
AVNBRI 00~127 Brightness Adj. of the blue back in AV mode.
IF Test-2
POMT 00~127 Power Mute Time Adj.
CHMT 00~31 Channel Change Mute time Agj.
SYST 00~15Selection of the number of times of a Colour system judgment.
S-STE 0,1Stereo/Mono Option. 0=MONO, 1=AV STEREO
VOLTBLSelection of the change characteristic of volume.
818/828 Metal Option
302 R02 00~255 CPU Debug Date.303 R03 00~255 CPU Debug Date.
301 R01 00~255 CPU Debug Date.
300 R00 00~255 CPU Debug Date.
CHIP818
0,1IF Test-3
7
73
1 H Lock, V Detect AV mode
6425
10
CPU Debug Date.
CPU Debug Date.
CPU Debug Date.0
00~255
00~255
00~255
304
305
306
R04
R05
R06
0~3
0,1
Service Adjustments with Replacing Memory IC(IC802)Following table shows the initial values which have been stored in the CPU ROM, and items for the service adjustments.
-10-
Service Adjustments with Replacing Memory IC (IC802)
Notes: The initial value that the CPU writes down the CPU ROM data to the memory when replaced the memory IC.TV set may not operate correctly with this initial value. It is required to set up the fine adjustment for service adjustments described in the above.
-11-
Service Adjustments with Replacing Memory IC(IC802)
TIMER
P
P
ADDRESSDRV
SI. 00100101S2.11111000DATA
B 6421 R 64ADDRESS
V-SCO
SI. 00100101S2.11111000DATA
905
ADDRESSRF AGC
SI. 00100101S2.11111000DATA
3001
[Entering to Service Mode]
1. Press and hold the MENU button on the Remote Control and press the VOLUME (+) button on the TV set.Following setting items appears on the screen.
Display for [V-SCO] V-S Correction adjustment
Read Status
Item No. Item Data value
Display for [RF AGC] RF AGC adjustment
Read Status
Item No. Item Data value
Data value for Red
Display for [DRV] White balance adjustment
Read Status
Item No. Item
Data value for Blue
To return to normal TV mode, press the MENU button on the TV set or the remote control handset.
2. Select item by pressing the TIMER (Item No. UP) or SOUND MUTE (Item No. DOWN) button on the remote controlhandset.
3. Adjust data value by pressing the VOLUME + or VOLUME - button on the remote control handset.
Example
MENU
MENU
0102030405......90... ...9089888786......01
- + PMENUTV/AV
-12-
Service Mode Adjustments
Vertical size
Following adjustments should be carried out when the memory IC is replaced. How to enter the service mode andadjust values, please refer to “ Entering to Service mode” on page 13.
NOTE: Do not attempt this adjustment with weak signal.(1) Tune the receiver to most clearest (or strongest) VHF
station in your area. Set the brightness and contrastcontrols to maximum. Set the colour control to minimum.
(2) Select [RF AGC] in the service mode.(3) Change value until the snow noise just disappears.(4) Exit from service mode.
Item 01 [RF AGC] AGC
(1) Receive a monochrome circular pattern.(2) Set the brightness and contrast to normal.(3) Select [H-PHA] in the service mode.(4) Change value to be optimum horizontal centre position.(5) Exit from service mode.
Item 02 [H-PHA] HORIZONTAL CENTRE
Horizontal centre
(1) Receive a monochrome circular pattern.(2) Set the brightness and contrast to maximum.(3) Select [V-SIZ] in the service mode.(4) Change value to be optimum vertical size.(5) Exit from service mode.
Item 04 [V-SIZ] VERTICAL SIZE
(1) Receive a crosshatch pattern.(2) Set the lever of SW501 (Vertical Center SW) as the
position of a center.(3) Select a picture mode of NATURAL by pressing the
PICTURE MODE button.(4) Select [V-SCO] in the service mode.(5) Adjust Vertical S-letter Correction so that the difference
of “c”, “d” and “e” becomes less than 2 mm by pressingthe VOLUME + or - button.
(6) Confirm Vertical Linearity and adjust Vertical Center then Vertical Size.
(7) Exit from service mode.
Item 05 [V-SCO] V-S CORRECTION
c Upper
Center
Bottom
d
e
(1) Receive a crosshatch pattern.(2) Set the lever of SW501 (Vertical Center SW) as the
position of a center.(3) Select a picture mode of NATURAL by pressing the
PICTURE MODE button.(4) Select [V-LIN] in the service mode.(5) Adjust Vertical Linearity so that the difference of “a” and
“b” becomes less than 3mm by pressing VOLUME + or- button.
(6) Exit from service mode.
Item 06 [V-LIN] VERTICAL LINEARITY
a
b
Upper
Center
Bottom
10
FC3B
T471-H5
T471-H1
R355
C524 R525
D501
C521
J
R516
T471-H12
T471-H7
C471
T471-H8
T471-H10
T471-H11
JP401
JP402 D485
R488C491
C486
R481
KQ
R424
R422
R475
R484
R492R485R423
R426
R486
T471-H2
T471
T471FBT.
VERT.O
UT
-13-
(1) Receive the monochrome circular pattern.(2) Set the brightness and colour to normal, contrast to maximum.(3) Enter to the service mode.(4) Set each value of Item-14 RBIAS, 15 GBIAS, 16 BBIAS, 17 RDRIV and 19 BDRIV mode to 64.(5) Select Item-20 mode to be one horizontal scanning line and turn the screen volume on the FBT to obtain just visible
one coloured line.(6) Press the 1 (Red Bias -), 2 (Red Bias +), 5 (Green Bias -), 6 (Green Bias +), 9 (Blue Bias -) or 0 (Blue Bias +)
button to adjust the brightness of each colour until a dim white line produced. Please see the control button alloca-tions in this mode.
(7) Select Item-21 DRV mode to enter the white balance adjusting mode.(8) Press the 3 (Red Drive -), 4 (Red Drive +), -/-- (Blue Drive -) or RECALL (Blue Drive +) button alternately to
produce normal black and white picture.(9) Exit from the service mode.(10) Check for proper grey scale tracking at all brightness levels.
NOTE: If the grey scale adjustment is made after picture tube replacement, check the high voltage.
Items 14-17, 19-21 GREY SCALE
Service Mode Adjustments
MAIN BOARD
SCREEN VR(Under side)
0
7
1 4
85
2 3
6
9
P
P
JXMYA
-/--
P P
TV/AV
A B
CH SCAN
TIMER
MENU PIC MODE
SWAP
BASS SURROUND
Red Bias -
Red Bias +
Green Bias -
Blue Bias +
Red Drive +
Blue Drive -
Blue Drive +Green Bias +
Blue Bias -
Red Drive -
Press the MENUbutton to exitfrom servicemode.
-14-
Service Adjustments
E
E
E
E
E
3 4
2 1
E
C
B
TP-B
JW2
JW3
J439
Q661
T611H13
R646
T611H16
Q613-H1
Q613-H3
Q613-H2
R624Z
J897
J682
J683
D003
R006D004
J896
J895
J225
J224
J223
J233
J232
J231J234
J235 J230
J639
J832
J352
J351
J510
J509
J280
R285
J353
R243
D243
JP183J204
C286C284
J218
JW5
R352
D681
D682J651
J660
C651
IC651J638
R688
R689C681
Q684
R687
J637
R686
Q683
J681
R663
R681Q681
C662
D684
D661
C661
R661
R661-H2R661-H1
R662
R662-H2
R662-H1
J636
C644
L634
C634
J634
D634
J635
C635
J630
R648R647
J641
R644-H1
R6442
Q641
J680
J640
C645
L635
D635
D683
R642R643
C643
D633
C633
R445
C685
D685
R636
R635
VR631+B ADJ.
D686
R637
D632
R638
R639
J631
C631
D631
C641
J435
R228
L631
L441-HC441AC441
L441
C434
R434
Q613-1
R682
R627-H1R625-H1
R627-H2R625-H2
J251
H3
J205
J601
R602A
J250
J249
R624-H1
R624-H2
D610
4
J005
C607-H1
C607-H2
S601-H2
PS601-H1
R602-H3
R602-H2
R602-H1
627
C605
C603
C604
JP601
D606
D604
D605
D603
J003
J002
Q611
R611
R623
R617
D617 D616
D618
D619
D614
R622
C613
R620
R621
C614
C615
R615
R626
T611H17T611H11
T611-H2T611-H5
T611-H8
L621
Q612
R619
C617
C629
R629
R628
L610
R624
C616
R627
R625
C628
C607
J001
PS601
T611
JW16JW
17
J350
JW18
JW19
JW20
JW21
T611CONVERTER
TRANS.
Q613
POW
ERO
UT
VR631MAIN BOARD
+B VOLTAGE ADJUSTMENT1. Connect DC meter to TP-B and the ground.2. Tune the receiver to an active channel and synchronized
picture. Select NATURAL picture mode by pressing the PICTURE MODE button on the remote control.
3. Adjust B-voltage to be 130 ± 0.5V DC by using VR631.
TP-B
FOCUS ADJUSTMENT1. Receive a monochrome circular pattern.2. Set the brightness to normal and contrast to maximum.3. Adjust the focus control on the F.B.T. for the best focus on the
screen center.
E
E
IC1501
10
FC3B
J1506
JP1403
J423
J501
JP1407
JP1503
C1401
402
J1401
IC1401
J026
J505
IC501-H2R514R515
R502
C514
C515
T471-H12
71-H7
C471
T471-H8
T471-H10
T471-H11
JP401
JP402 D485
R488C491
86R481
KQR424
R422
R475
R484
R492R485R423
R426
R486
D421
D467
C469
D476
R479
D468
D486
D448
C449
Q449
T471
J1503
C1502
R
Focus VR (Upper side)
E
E
IC1501
10
FC3B
T471-H5
H1
J1506
JP1403
J423
J501
C1013
C1012
J422
R1026
J3406
R1028
J3407
JP1407
JP1503
C1401
J1402
J1401
IC1401
J026
C3414
C3416
C3417
C3418C3424
7J1501
J421
R355
R501
JW10J028
SW501
C524 R525
C527
J505
R516
R522
R512
IC501-H2
R518
R514R515
C518
C520
R519
IC501
R502
C514
C515
T471-H12
T471-H7
C471
T471-H8
T471-H10
T471-H11
JP401
JP402 D485
R488C491
C486
R481
KQ
R424
R422
R475
R484
R492R485R423
R426
R486
D421
D467
C469
D476
R479
D468
D486
D448
C449
Q449
2
T471
J1503
C1502
T471FBT.
VERT.O
UT VERT. CENTER
Vertical centre
SW501
VERTICAL CENTER ADJUSTMENT1. Receive a monochrome circular pattern.2. Set the brightness and contrast to maximum.3. Adjust the vertical centre of the picture with SW501.
D1006
D1005
T471-H5
T471-H1
C1013
J3401
J171
JP3401
JP104
R3401
R3402
C3404
C3408
C3411
C3416
C3417
C3418C3424
C3427
C3439
C3432
C3436
J508
J507
J506KDY
R501
JW10J028
S
524 R5
D501
C521 R510
R511J503
J504
C510
C527
R512
C518
R519
IC501-H1
D512
C517
IC501
T471-H2
D441
JP442
L442-H2L442-H1
L442
1A
J431
C433
R435
C437
J436
C435-H1
C435AC435
C435-H2
C435-H3
C436C436A
Q432-H5
Q432-H2
2
L431
T431
IC3401
R442
KDY-H1
KDY-H3
KDY-H6
R503
JP503
J502
T431H-DRIVE TRANS.
T471FBT.
VERT.O
UT
Q432H-OUT
VERT
HIGH VOLTAGE CHECKNote: +B (+130V) Voltage Check and Grayscale Adjustment must
be completed before attempting High Voltage Check.
1. Connect high voltage voltmeter negative lead to ground, andconnect + lead to anode of picture tube.
2. Tune receiver to an active channel and confirm TV is operating properly.
3. Maximize the beam current by adjusting the contrast andbrightness controls to maximum. Confirm high voltage is with-in 24.0 KV and 26.0 KV at maximum beam current.
4. Eliminate the beam current by adjusting the contrast andbrightness controls to minimum. Confirm high voltage doesnot exceed 27.5 KV at zero beam current.
If reading is not within range, check horizontal circuit.
No high-voltage adjustment is provided on this chassis.
C436
HORIZ. WIDTH ADJUSTMENT1. Receive a monochrome circular pattern.2. Set the brightness and contrast to maximum.3. If the picture is too wide, remove “C436” on the main unit.
-15-
Special Function
Once TUNING LOCK is switched on, further channel tuning(Pre-set) is not possible. The Channel Swapping function alsois not possible.
(2) Tuning Lock setting
The following special functions can be set up on this TVset.
With this function, a maximum sound volume limit can be set atany level.
(3) Music Mode setting
When Music Mode is ON, Programme position from “91” to “99”and “0” are set Music Mode. Only sound is provided and anypicture is not on the screen under Music Mode.
Set AV-START to ON and every time the TV set is switched on,AV position will be the initial programme position.
(4) AV Start setting
TUNING LOCKED
AV
MUSICTurns blackscreen
SOUND BASS ON 18
(1) Volume Lock setting
1To enter into the special function setting mode, press and hold the MENU button of the remote control, then press thePROGRAMME DOWN button on the TV set.
2 Select an item of the special functions by pressing the PROGRAMME UP or DOWN button on the remote control or the TV set.
3 Set the selected special function “ ON “ by pressing the VOLUME + or - button. To cancel, set to “ OFF”.
How to set the special function:
Note: When making the VOLUME LOCK setting, set thedesired maximum sound volume by pressing the VOLUME + or- button before entering Special Function setting mode.
4 Press the MENU button of the remote control to return to the normal TV mode.
P
P
P
P
MENU
MENU
- + P
OFFOFFOFFOFF
TUNING LOCK
AV START
VOLUME LOCK
MUSIC MODE
SELECT ADJUST M EXIT
OFFONOFFOFF
TUNING LOCK
AV START
VOLUME LOCK
MUSIC MODE
SELECT ADJUST M EXIT
TUNING LOCK
AV START
VOLUME LOCK
MUSIC MODE
OFFOFFOFFOFF
SELECT ADJUST M EXIT
-16-
Purity and Convergence Adjustment
RED
BLUE
Adjust tabs together tosuperimpose red andblue horizontal line.
Figure- 2 BLUE AND RED LINE MOVEMENT Figure- 3 BLUE/RED AND GREEN MOVEMENT
Adjust tabs together tosuperimpose red/blueand green horizontalline.
Adjust tabs angle to superimposeblue and red vertical line.
Adjust tabs angle to superimposered/blue and green vertical line.
GREEN
BLUE / RED
CAUTION: The Convergence and Purity adjustments have been made at the factory. Readjustmentshould be made only after picture tube or deflection yoke replacement, following the steps below:
PURITY ADJUSTMENT1. Demagnetize the picture tube and receiver using an external
degaussing coil. When replacing picture tube or deflectionyoke, mount deflection yoke and purity-convergence magnetsassembly properly, see figures 1 and 4.
2. Turn Red and Blue guns off and provide only Green raster.Rotate Screen control to fully counterclockwise. Rotate Redand Blue Bias controls fully counterclockwise. Slowly rotateGreen Bias control clockwise to produce Green raster.
3. Loosen the screw holding the Deflection Yoke and remove the3 Rubber Wedges, and slide the Deflection Yoke fully forward.
4. Rotate and spread the Tabs of the two Purity Magnets to cen-tre the vertical green belt in the picture screen. The PurityMagnets are also adjusted to obtain vertical centring of theraster.
5. Slowly slide the Deflection Yoke backward until a uniformgreen screen is obtained.
6. Check the purity of the red and blue screens for uniformity,turn off other colours to check this (use bias controls).Readjust the yoke position if necessary until all screens arepure.
7. Adjust each Bias control and screen control to obtain whiteraster. Refer to Gray Scale Adjustment. If part of the picturescreen is coloured, adjust the Deflection Yoke position forwardor backward slightly.
8. Tighten the mounting screw of the Deflection Yoke. AdjustConvergence next.
CENTRE CONVERGENCE ADJUSTMENT1. Use a dot crosshatch pattern signal.2. Turn Red and Blue guns on and turn off Green gun. Adjust the
angle between the Tabs of the Four Pole Magnet 1 and 2, andsuperimpose the Red and Blue vertical lines in the centre areaof the picture screen. Refer to figure 2.
3. Keeping the mutual angle of the Tabs of the Four Pole Magnetturn them together to superimpose the Blue and Red horizon-tal lines in the centre area of the picture screen. Refer to fig-ure 2.
4. Turn Green gun on and adjust Six Pole Magnet 3 and 4 thatthe Green line superimposed on the Red/Blue lines.This is the same procedure used in steps 2 and 3.Refer to figure 3.
OUTER AREA CONVERGENCE ADJUSTMENTSlightly loosen the screw holding the Deflection Yoke. Adjust theDeflection Yoke to converge the detail in the outer area (left sideand right side) of the picture screen by orbital movement of thefront of the Yoke, then secure the Deflection Yoke in appropriateposition by putting the wedges as illustrated. Tighten screw hold-ing the Deflection Yoke.
RUBBERWEDGE
DEFLECTION YOKE
DEFLECTION YOKEMOUNTING SCREW
Figure 4. Deflection Yoke Movement
SIX-POLEMAGNET TABS FOUR-POLE
MAGNET TABS
ANGLEOF TABS
PURITYMAGNETTABS
432
1
FOCUS GAP(G3-G4)
Figure 1. Purity and Convergence Magnets
MAGNET TABS
ANGLE OF MAGNET TABS
Figure 5. Adjusting Magnet
Note: The form of deflection yoke changes with models.
-17-
DEGAUSSINGCOIL DEGAUSSING
COIL HOLDER
DEGAUSSINGCOIL SOCKET
To CRT unit ground
PICTURE TUBEGROUND LEAD
Mechanical Disassemblies
Figure 2. Picture Tube Removal
L
R
AUDIO
AV INPUT
VIDEO
(MONO)
MONITOROUT
ANT. 75Ω
CABINET BACK REMOVAL1. Refer to Figure 1, remove 8 screws.2. Pull off cabinet back and remove.
CHASSIS REMOVAL1. Remove cabinet back.2. Discharge the picture tube anode (2nd anode lead) to the dag
4. Remove chassis completely by sliding it straight back.
PICTURE TUBE REMOVALCAUTION: Do not disturb the deflection yoke or magnet
assembly on the picture tube neck. Care must be takento keep these assemblies intact, unless picture tube isbeing replaced . Discharge the picture tube to the coat-ing before handling the tube.
1. Remove chassis, referring to Chassis Removal instructions.2. Place cabinet’s front face down on the soft surface.3. Remove the screw on each corner of the picture tube and
GENTLY lift the picture tube out of the cabinet.4. Install a replacement picture tube in reverse order.
Properly install the degaussing coil and picture tube grounding lead on the picture tube. See Figure 2.
Note: If the Picture Tube is being replaced, mount theDegaussing Coil on the picture tube. See Figure 2.
Figure 1. Cabinet Back Removal
L
R
AUDIO
AV INPUT
VIDEO
(MONO)
MONITOROUT
ANT. 75Ω
-18-
Cabinet Parts List Note: Parts order must contain Service Ref. No., Part No., and descriptions.
Key No. Part No. Description
9
- + PMENUTV/AV
4-a 53 2
1 610 286 4977 ASSY,BUTTON POWER-C2GA610 286 7770 SPRING COIL-C2GA
Ref. No. Part No. Description Ref. No. Part No. Description
Product safety should be considered when a component replacement is made in any area of a receiver. Components indicated by a mark in this parts list and the circuit diagram show components whose value havespecial significance to product safety. It is particularly recommended that only parts specified on the following partslist be used for components replacement pointed out by the mark.
!
Note: Parts order must contain Service Ref. No., Part No., and descriptions. The main PCB unit will be supplied without tuner andflyback transformer. They should be ordered separately.
Read description in the Capacitor and Resistor as follows:
CAPACITORCERAMIC 100P K 50V
Rated Voltage
Tolerance Symbols:Less than 10pFA : Not specified B : ±0.1pF C : ±0.25pFD : ±0.5pF F : ±1PF G : ±2pFR : ±0.25-0pF S : ±0-0.25pF E : +0-1pFMore than 10pFA : Not specified B : ±0.1% C : ±0.25%D : ±0.5% F : ±1% G : ±2%H : ±3% J : ±5% K : ±10%L : ±15% M : ±20% N : ±30%P : +100-0% Q : +30-10% T : +50-10%U : +75-10% V : +20-10% W : +100-10%X : +40-20% Y : +150-10% Z : +80-20%
Material:CARBON........... CarbonMT-FILM............ Metal FilmOXIDE-MT......... Oxide Metal FilmSOLID................ CompositionMT-GLAZE......... Metal GlazeWIRE WOUND...Wire WoundCERAMIC RES.. CeramicFUSIBLE RES....Fusible
NOTES:
Chassis Electrical Parts List (Service Ref. No. CP21AF1V-00, CP21AF1V-10)
Product safety should be considered when acomponent replacement is made in any areaof a receiver.
Components indicated by a mark in thiscircuit diagram show components whose values have special significance to productsafety. It is particularly recommended that onlyparts specified on the part service manual beused for components replacement pointed outby the mark.
CIRCUIT DIAGRAM NOTICE:1. All resistance value are in ohms, K=1,000, M=1,000,000.2. All resistance rated wattages are 1/6W unless otherwise noted.3. Excepting electrolytic capacitors, all capacitance values of less than 1
are expressed in µ F and more than 1 are pF.4. All capacitance rated voltages are 50V unless otherwise noted.5. All inductance values are in µ H.6. Voltage readings take with a "VTVM" are from point indicated chassis
ground. Voltage readings taken by using PAL colour bar signal are with all controls at normal position. Some voltage may vary with signalstrength.
7. Waveform were taken with PAL colour bar and controls adjusted for normal picture. Waveforms were taken by using a wide band oscillo-scope and a low capacity probe.
8. This circuit diagram covers a basic or representative chassis only. There may be some components or partial circuit differences between theactual chassis and the circuit diagram.
9. Parts specified with "X" are not installed in this model.10. Parts specified with "J" are just jumper wires.
THE SERVICE PRECAUTION:The area enclosed by this line( ) is directly connected with AC mains voltage.When servicing the area, connect an isolating transformer between TV receiver and ACline to eliminate hazard of electric shock.
11. Expression of capacitance and resistance in circuit diagrme.
C3RW/C3RV
TRANSISTOR, DIODE AND INTEGRATED CIRCUIT TERMINAL GUIDEC: COLLECTORB: BASEE: EMITTER
A: ANODEK: KATHODE
B
B
C
C
E
E
C EB C E
B
B
C
E
AK
K
A
A
K
FUSIBLERESISTOR
PARTICULARPARTS SYMBOL
1
1
1
N/2
N/2 + 1
N NON POLEELECTRICCAPACITOR
POSISTER
C
EB
CHIP COMPONENTS
K
A
TRANSISTOR
DIODE
123
RESISTOR
12 X 103=12K
Capacitance (Example)1000 C M 2000 D
CharacteristicCapacitance value (220pF)Allowable error (±20%)Kind (Ceramic)Rated voltage (1,000V)
J= ± 5%K= ±10% M= ±20%
Resistance (Example)1/2 N J 1.2
Resistance value (1.2Ω)Allowable error (±5%)Kind (M.carbon)Rated wattage (1/2W)