SANYO CE29ST8R Service Manual
SERVICE MANUAL Colour Television
Product Code: 111356463
Original Version
Chassis Series: AC5-G2
C4ZKH
FILE NO.
(Russia)
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 differ from the design specifications. Refer to
the specification table.
Specifications
Power Source . . . . . . . . . . AC110-240V, 50Hz/60Hz.
Colour System . . . . . . . . . PAL/SECAM/NTSC4.43/NTSC/PAL-60Hz
Television System . . . . . . B/G, D/K, K’, I, M/M
Channel Coverage . . . . . VHF: E2-E12, R1-R12, K1-K9, A2-A13, J1-J12
UHF: 21-69, A14-A69, J13-J62
CATV: S1-S41, X, Y, Z, Z+1, Z+2
Video IF . . . . . . . . . . . . . . 38.0MHz
Aerial Input Impedance . . 75Ω
Ext. Terminals
Video inputs: Phono jack 2 (1Vp - p, 75Ω)
Audio inputs: Phono jack (L/R) 2(436mVrms, more than 40KΩ)
Video monitor outputs: Phono jack 1(1Vp - p, 75Ω)
Audio monitor outputs: Phono jack (L/R) 1(436mVrms, less than 600Ω)
Headphone jack: Mini stereo jack 1
Sound Output (RMS) . . . . 5W + 5W
Speaker . . . . . . . . . . . . . 6 cm 12 cm 2 pcs.
Dimensions . . . . . . . . . . . .770 (W) 590 (H) 495 (D)mm
Weight . . . . . . . . . . . . . . . .approx. 39.9 Kg
Specifications subject to change without notice.
REFERENCE NO. SM3010001
-/--
Service Ref. No. CE29ST8R-50
Model No. CE29ST8R
TIMER
CH SCAN
BASS
TV/AV
P
P
MENU
-/--
CH
CH
SWAP SOUND
A•B
SURROUND
PICTURE
S.SYS C.SYS
JXMRM
Contents
-2-
Safety Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Chassis Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
IC Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Service Adjustments with replacing Memory IC (IC802) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-12
Service Mode Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-14
Service Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Special Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Purity and Convergence Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Cabinet Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Chassis Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-27
Safety Notice
SAFETY PRECAUTIONS
1: An isolation transformer should be connected in the
power line between the receiver and the AC line
when a service is performed on the primary of the
converter transformer of the set.
2: Comply with all caution and safety-related notes pro-
vided on the cabinet back, inside the cabinet, on the
chassis or the picture tube.
3: When replacing a chassis in the cabinet, always be
certain that all the protective devices are installed
properly, such as, control knobs, adjustment covers
or shields, barriers, isolation resistor-capacitor networks etc.. Before returning any television to the
customer, the service technician must be sure that
it is completely safe to operate without danger of
electrical shock.
X-RADIATION PRECAUTION
The primary source of X-RADIATION in television receiver is the picture tube. The picture tube is specially constructed to limit X-RADIA TION emissions. For continued X-RADIATION protection, the replacement tube must be
the 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
service manual, high voltage adjustment for specific high voltage limit. If high voltage exceeds specified limits,
take necessary corrective action. Carefully follow the instructions for + B1 volt power supply adjustment, and high
voltage 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 which
safety can be of special significance. It is particularly recommended that only parts designated on the parts list
in this manual be used for component replacement designated by mark . No deviations from resistance
wattage or voltage ratings may be made for replacement items designated by mark .
IC801
CPU
IC802
EEPROM
5
6
3
10
21
4
A1901
28
D1901A
LED
32
27
ON-TIMER
POWER FAIL
Front
key
12
SDA
SCL
IC3701
SURROUND
IC001
AUDIO AMP.
MONITOR-OUT
AUDIO-OUT (L)
AUDIO-OUT (R)
REAR
AV TERMINAL
AUDIO 1-IN (L)
AUDIO 1-IN (R)
VIDEO 1-IN
FRONT
AV TERMINAL
IC1201
VIDEO SELECTOR
VIDEO 2-IN
AUDIO 2-IN (L)
AUDIO 2-IN (R)
AV1/AV2
AV OUT
4
2
7
5
26
2
29
3
28
8
6
12
2
R-OUT
L-OUT
SP901
SP902
EAR PHONE
K002
A101
TUNER
SCL
SDA
SDA
SCL
4
5
11
12
IC201
IF/VIDEO/CHROMA
1H
DL
RGB
MATRIX
5/6
46
44
42
2
52
54
SAW
FILTER
X161
R-OUT
B-OUT
G-OUT
19
20
21
EXT. VIDEO IN
40
SELECTED
VIDEO OUT
AUDIO OUT
(TV OUT)
1/30
SIF OUT
SIF IN
VIDEO OUT
INT. VIDEO IN
IC281
SECAM
7
9
R-Y OUT
B-Y OUT
17
VIDEO IN
35
34
VERT. OUT
HORIZ. OUT
23
27
Q431
H-DRIVE
T431
H-DRIVE
TRANS.
IC501
VERT. /DEF.
PCC
CIRCUIT
Q461-Q462
T471
FBT
HV
L902
DY
CRT
CRT UNIT
R
G
B
R
G
B
HEATER
SCREEN
FOCUS
3
RC-IN
KEY-IN
26
AV1/AV2
1
5
POWER SUPPLY CIRCUIT
1
2
SDA
SCL
13 14
IC701
TRIPLE VIDEO
OUTPUT AMP.
R
G
B
1
2
3
9
8
7
RECTIFICATION
CIRCUIT
SWITCHING
OSCILLATOR
456
7
1
2
3
14
15
12
161317
24 V
9 V
IC681
5V_RC
11V
140V
FBT
AUDIO
IC801/
IC802
IC3701/IC1201
IC201/IC281
IC501/
HORIZ. DEF.
Q613
-3-
Chassis Block Diagrams (MAIN SIGNAL PROCESSING CIRCUIT)
-4-
Chassis Block Diagrams
SYSTEM CONTROL
IC3701
SURROUND
14
AUDIO CONTROL/
13
A101
F/S TUNER
5
4
SDA
SCL
12
11
CIRCUIT
DEFLECTION
IC201
etc.
KEY
SWITCH
COLOUR SYSTEM OPTION INPUT
KEY SWITCH IN
11
CPU
IC801
12
QXXAVC305P
30
13
26
SCL
2
SDA
1
9
IF/VIDEO / CHROMA/DEF.
PHOTO COUPLE
POWER ON/OFF
(ON=HIGH, OFF=LOW)
31
16
AFT SIGNAL INPUT
10
33
28
OSD BLK OUT(Active=High)
22
OSD BLUE OUT(Active=High)
OSD GREEN OUT(Active=High)
OSD RED OUT(Active=High)
19
20
32
211817
6
POWER CIRCUIT
HORIZ. SYNC IN (ACTIVE=LOW)
VERT. SYNC IN (ACTIVE=LOW)
(POWER ERROR=LOW)
POWER PROTECT IN
27
34
SDA
SCL
56
IC802
MEMORY
7
SOUND VOLUME OUT
9
RESET INPUT (RESET=LOW)
IC001
AUDIO AMP.
VIDEO SELECTOR
(LOW=AV1, H=AV2)
2
SECAM KILLER INPUT (HIGH=SECAM)
IC1201
VIDEO SELECTOR
(ON TIMER ON=Low)
RC SIGNAL IN
(ACTIVE=HIGH)
ON-TIMER LED OUT
BILINGUAL OUTPUT (LOW=S-1, HIGH=S-2)
VIF-M OUTPUT (HIGH=NTSC, LOW=OTHER)
RC PRE-AMP.
LED
CPU OSC OUT
CPU OSC IN
OSC
X801
32.768KHz
-5-
IC Block Diagrams
IC201 < IF/Video/Chroma/Def. > LA76818A
Audio 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 C
Sync output
Vertical Output
Ramp ALC Filter
Horizontal/BUS Vcc
Horizontal AFC Filter
Horizontal Output
VOL
DC
1
2
3
AGC
RF
4
56
7
VCC 5V
IF
8
9
10
11
BUS
12
ABL
13
14
CLAMP
15
16
17
18
VCC
19 20
DRIVE/OUT-OFF
21
SYNC SW
VCC
H
FSC/
RAMP
VER
HOR
VCC
HOR
OUT
22
23
24
25
26 27
SW
AGC
IF
VIF
CONTRAST
BRIGHT
OSD
OSD
SW
VER
C/D
SHIFTER
PHASE
VER
SEP
AFC2
CORING
STRETCH
REST
BRIGHT
MATRIX
DET
FM
PEAKING
LINE
SYNC
BLACK
SEP
DC
CONTRAST
RGB
AFC1
VIDEO
DET
AFT
DELAY
ACC
DEMO
CLAMP
C/D
AMP
LIM
TRAP
ON/OFF
SW
CLAMP
SW
COLOR
HOR
TRAP
SW
BPF
PAL
+
ALC
1/256
BPF
LPF
IDENT
IF
VIDEO
SW
APC1
TINT
VCO
HOR
VCO
SPLL
VIDEO
AMP
APC2
DC ADS.
1H DELAY
VXO
DDS
BPF
A2C
PLL
CLMP
CLMP
CLAMP
FBP
SIF Input
SIF APC Filter
525354
SIF Output
51
Ext. Audio Input
APC Filter
4950
VCO Coil 1
48
VCO Coil 2
47
VCO Filter
46
Video Output
Black Level Detector
4445
Internal Video Input (S-C IN)
V/C VCC
43
5V
Video/Vertical Vcc
42
External Video Input(Y-IN)
41
Video/Vertical/BUS Ground
40
Selected Video Output
39
Chroma APC1 Filter
38
4.43 MHz Crystal
Clamp Filter
Chroma APC2 Filter
353637
SECAM R-Y Input
(Cr Input)
34
SECAM B-Y Input
(Cb Input)
33
CCD/Horizontal Ground
32
CCD Filter
31
VCC
CCD Vcc
1H
30
Clock (4MHz) Outupt
VCO IREF
2829
Flyback Pulse Input
IC Block Diagrams
-6-
IC201 <IF System Block Diagram> LA76818A
11
12
BUS
Interface
SAW
5
6
4
8
7
PIF
In1
PIF
In2
IF In
9V
30K
RF AGC
Out
120K
IF VCC
IF
GND
VIF AMP
VIF 1
VIF 2
VIF 3
IF AGC
Drive
RF
AGC
2ndIF
AGC
RF AGC
Delay
6bit
IF AGC
Def
1bit
+
-
(6 Vcc)/7
To
BUS
3
0.022u
PIF
AGC
IF
AGC
Data
Clock
APC
Det
+π/4
-π/4
Snd
Det
Amp
52
SIF.Out
Sound
Trap
Video
Det
Buzz
Canceller
50
APC
Filter
330
0.47u
+
PLL Pull-in SW
To
BUS
Lock
Det
Video.Level
3bit
Amp
54
10p
SIF.In
Sound
BPF
VCO.Coil
VCO
COIL1
VCO
COIL2
48
49
VIF
VCO
Chroma
Counter
B/N
INV
IF
Ident
OSC
C/D
Amp
SIF. Sys
2bit
pre-
scaller
SIF
VCO
500K
BPF
SIF
APC
Filter
1K
0.01u
1000p
53
LIM
AMP
FM
Det
FM.Level
5bit
Chroma
C/D
APC
Det
500K
Det
To
BUS
Chroma
VCO
VIF
Counter
Reset
Pulse
VCO
Ident
VIF.Sys
2bit
Phase
Detector
A.MUTE
1bit
VOLUME
D/A
VOLUME
Filter
A.SW
1bit
Input
Select
VOLUME
(ATT)
-
+
-
+
2.5V
Amp
FM Gain
1bit
Deem-TC
1bit
De-
emph
FM Mute
1 bit
2
9
46
51
1
A.Fil.Def
1bit
VOLUME
7bit
47
VCO
Alignment
AFT
10
AFT
Vcc
100K
100K
0.1u
VCO
Filter
+
0.47u
Audio.out
+
Audio in
10u
Video
Out
FM
Filter
+
1u
FM
Out
0.01u
+
to BUS Line
+
-7-
IC Block Diagrams
IC501 < Vertical Output > LA78041
IC3701 < Audio Control / Surround > NJW1142MP
IC281 < SECAM > LA7642NM
Thermal
20
Protection
AMP
+
Bell/EQU
Pump
Up
1
INVERTING
INPUT
2
Vcc
3
4
GND
PUMP UP
OUT
5
6
OUTPUT
Ver. OUTPUT
NON INV.
ST A GE Vcc
7
INPUT
1
F0-Fil Kil-Fil
IN 1a
IN 2a
IN 3a
IN 4a
IN 1b
IN 2b
IN 3b
IN 4b
30
29
28
27
MONa
5
-2dB
AGC
20
SR-FIL
1
2
SEL
VOL 1
3
4
AGC
SEL
-2dB
VOL 1
NJRC
ORIGINAL
SURROUND
&
SIMULATED
STEREO
TONE Ha
6
Adj
VccEQU-Adj
2
7
TONE
TONE
N.C.
1819
3
N.C.
TONE La
8
ACC
Video In
17
Bell/EQU
ID-KIL
4
4.43DC
VOL 2
VOL 2
SW3
Filter
Kil-Out
KILLER
ID-Fil
OUT a
16
5
10
AV/SECAM
4.43MHz In
15
14
System
SW1
LIM
ID
6
4M-DC
F0 Adj
PLL
DET
R-Y Out
SW2
VCO
Filter
7
N.C.
N.C.
13
8
SC-In
Clamp
SW/ALC
B-Y Out
12
9 10
4MHz In
11
Pulse
DET
Pulse
I/F
GND
LINEa
9
+4.5 dB
13
SDA
14
SCL
CVa
11
12
19
18
15
16
25
CVb
CTH
CTL
CSR
GND
V+
+4.5 dB
IIC BUS
INTERFACE
BIAS
26
MONb
TONE Hb
24
23
TONE Lb
21
OUT b
22
LINEb
17
VREF
-8-
IC Block Diagrams
IC1201 < Video Selector > LA7016
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 abnormality
occurs 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 for about
one second. The CPU detects that this has occurred and outputs the signal from pin 31 to switch 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 again
via either the main power switch or the ON-OFF button on the remote control. This will work only if the power
supply trouble was temporary. If there is permanent trouble such as a damaged circuit, power cannot be
restored and the circuit will have to be repaired.
Protection Circuit
IC701 < Triple Video Output Amp. > TDA6103Q/N3
OUTPUT VCC
4 1
INPUT 2
INPUT 1
2
7
3
CONTROL
INPUT
6
GND
N.C.
8
N.C.
5
VDD
PROTECTION
4
THERMAL
GND
6
Non-inverting
5
Input
Vip
Cathode
Output
(3x)
Inverting
Input
(3x)
VOC
Vi
VDD
1x
LEVEL-
SHIFTER 1
VDD
3x
FLASH-
DIODE
9,8,7
1,2,3
Note: One amplifier shown.
bias
V
DIFFERENTIAL
MIRROR 2
VDD
MIRROR 3
STAGE
VDD
LEVEL-
SHIFTER 2
MIRROR 1
VDD
CURRENT
SOURCES
-9-
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].
[1] Initializing Procedure
1. 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 following
picture 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
[2] Required Service Adjustments
Readjust the following service adjustments.
Adjustments Service Mode No. & Item
RF AGC Item 01, RF AGC
Horizontal centre Item 02, H-PHA
Vertical size Item 04, V-SIZ
Vertical-S correction Item 05, V-SCO
Vertical linearity Item 06, V-LIN
Gray scale Item 14-17, 19-21
Further adjustment please refer to page 12 and 13.
Press and hold for more than 2 seconds
MENU
TV/AV
+
CH
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