SANYO SM-29-C4ZKR Service Manual AC5-D
SERVICE MANUAL Colour Television
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 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)
Headphone jack: Mini stereo jack x 1
Speaker . . . . . . . . . . . . . . 6 cm x 12cm x 2 pcs.
Sound Output (RMS) . . . . 5W + 5W
Dimensions . . . . . . . . . . . 770 (W) x 590 (H) x 495 (D)mm
Weight . . . . . . . . . . . . . . . approx. 39.9 Kg
Specifications subject to change without notice.
Product Code: 111356463
Original Ver sion
Chassis Series: AC5-D
C4ZKR
FILE NO.
Model No. CE29ST8R
Service Ref. No. CE29ST8R-00
(Russia)
Give complete “SERVICE REF. NO.” for
parts order or ser vicing. 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.
(Software: AC5-D RU)
0
7
14
85236
9
P▲
P▼
JXMYA
-/--
PP
TV/AV
A B
CH SCAN
TIMER
MENU
PIC MODE
SWAP
BASS
SURROUND
Contents
-2-
Safety Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Chassis Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
IC Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Service Adjustments with replacing Memory IC (IC802) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-13
Service Mode Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-15
Service Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Special Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Purity and Convergence Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Cabinet Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Chassis Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-28
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 primar y 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-RADIATION 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 v olt po w er 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 par ticularly recommended that only par ts designated on the par ts 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 .
-3-
Chassis Block Diagrams
140V
25V
24V
13V
12V
9V
5V
36V
FBT
TUNER
HORIZ. DEF.
VERT. DEF.
MAIN SOUND AMP.
SURROUND. AV SW
AUDIO CTL / 1 CHIP IC
CPU / EEPROM
POWER SUPPLY CIRCUIT
A101
TUNER
SAW
FILTER
X161A
IF IN
5/6
IC201
IF/VIDEO/CHROMA
SELECTED VIDEO OUT
EXT . VIDEO IN
19
20
21
R-OUT
B-OUT
G-OUT
IC281
SECAM
6
7
R-Y OUT
B-Y OUT
35
34
IC501
VERT. /DEF.
23
27
VERT. OUT
HORIZ. OUT
1
5
IC801
CPU
T471
FBT
HEATER
PCC
CIRCUIT
Q461-Q462
Q431
H-DRIVE
Q432
H-OUT
HV
L902
DY
CRT UNIT
CRT
T431
H-DRIVE
TRANS.
HV
FOCUS
SCREEN
IC701
TRIPLE VIDEO
OUTPUT AMP.
R
B
G
1
2
3
9
8
7
R
B
G
D1910
LED
A1901A
RC RECEIVER
FRONT CONTROL
KEYS
SW1901 - SW1906
IC802
EEPROM
4
3
6
5
SDA
SCL
32
12
28
ON-TIMER
RC-IN
KEY-IN
40
REAR
AV TERMINAL
FRONT
AV TERMINAL
VIDEO MONITOR OUT
AUDIO MONITOR OUT(LEFT)
AUDIO MONITOR OUT(RIGHT)
46
44
Q182
VIDEO OUT
INT . VIDEO IN
42
IC1201
VIDEO SW
4
EXT . VIDEO
AV1
AV2
VIDEO IN
AUDIO IN (LEFT)
AUDIO IN (RIGHT)
VIDEO IN
AUDIO IN (LEFT)
AUDIO IN (RIGHT)
AV2
AV1
2
7
SP901
SP902
IC001
AUDIO AMP.
7
12
4
2
IC3701
AUDIO CONTROL /
SURROUND
23
8
R
L
IC1301
AUDIO SW
2
FM OUT
(TV OUT)
L-OUT
R-OUT
2
15
11
13
2/5
1/3
L/R, L/L,R/R SW
3
15
130
4
4
AV2
AV2
AV1
AV1
1 /5
12/14
L
R
L-OUT
R-OUT
IC3702
52
54
SIF OUT
SIF IN
14
VIDEO IN
1H
DL
RGB
MATRIX
19
20
21
OSD R-OUT
OSD B-OUT
OSD G-OUT
OSD R-IN
OSD B-IN
OSD G-IN
14
15
16
MAIN SIGNAL PROCESSING CIRCUIT
-4-
Chassis Block Diagrams
SYSTEM CONTROL
12
KEY SWITCH IN
KEY
SWITCH
TV/AV SWITCH
(TV=LOW, AV=HIGH)
SCL
2
1
31
SDA
POWER ON/OFF
PHOTO COUPLE
(ON=HIGH, OFF=LOW)
IC201
IF/VIDEO / CHROMA/DEF.
IC801
CPU
QXXAVC044P
22
19
20
211817
27
34
7
6
32
28
23
33
OSD BLK OUT(Active=High)
OSD RED OUT(Active=High)
OSD GREEN OUT(Active=High)
OSD BLUE OUT(Active=High)
DEFLECTION
CIRCUIT
HORIZ. SYNC IN (ACTIVE=LOW)
VERT. SYNC IN (ACTIVE=LOW)
POWER PROTECT IN
(POWER ERROR=LOW)
POWER CIRCUIT
etc.
SCL
SDA
IC802
MEMORY
OSC
X801
32.768KHz
CPU OSC OUT
CPU OSC IN
LED
ON-TIMER LED OUT
(ON TIMER ON=Low)
RC SIGNAL IN
(ACTIVE=HIGH)
RC PRE-AMP.
24
26
IC001
AUDIO AMP.
VIF-M OUTPUT (HIGH=NTSC3.58, LOW=OTHER)
A101
F/S TUNER
AFT SIGNAL INPUT
10
RESET INPUT (ACTIVE=LOW)
13
MUTE OUTPUT
(MUTE ON=HIGH)
29
AV1/AV2 SWITCH
(AV1=LOW, AV2=HIGH)
IC1201
VIDEO SWITCH
56
SECAM KILLER INPUT (HIGH=SECAM)
IC3701
AUDIO CONTROL
&
SURROUND
13 14
11
3
IC1301
AUDIO SWITCH
9
10
11 12
IC3702
L/R, L/L, R/R
SWITCH
9
17
10
18
IC801
CPU
QXXAVC321P
-5-
IC Block Diagrams
IC201 < IF/Video/Chroma/Def. > LA76818A
1
DC
VOL
SW
FM
DET
2
3
4
56
IF
AGC
RF
AGC
VIF
7
8
9
10
IF
VCC 5V
11
12
13
BUS
PEAKING
CORING
BLACK
STRETCH
SYNC
SEP
14
15
ABL
DC
REST
CLAMP
OSD
CONTRAST
BRIGHT
16
17
18
19 20
CONTRAST
BRIGHT
RGB
MATRIX
OSD
SW
DRIVE/OUT-OFF
VCC
21
22
23
FSC/
SYNC SW
24
25
26 27
VER
RAMP
HOR
VCC
H
VCC
VER
C/D
HOR
OUT
PHASE
SHIFTER
AFC2
AFC1
VER
SEP
HOR
C/D
1/256
COLOR
CLAMP
LPF
ALC
+
SW
CLAMP
DEMO
PAL
SW
ACC
BPF
ON/OFF
DELAY
LINE
SW
TRAP
AFT
VIDEO
DET
TRAP
LIM
AMP
BPF
SPLL
BPF
VIDEO
AMP
IF
IDENT
VIDEO
SW
APC1
TINT
VXO
DDS
APC2
DC ADS.
CLAMP
VCO
1H DELAY
HOR
VCO
FBP
2829
30
31
32
1H
VCC
33
34
353637
38
39
40
41
42
CLMP
43
4445
CLMP
V/C VCC
5V
46
47
48
4950
A2C
PLL
51
525354
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 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> 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 < Ver tical Output > LA78041
Thermal
Protection
-
+
AMP
Pump
Up
1
INVERTING
INPUT
2
Vcc
3
PUMP UP
OUT
4
GND
5
Ver. OUTPUT
6
OUTPUT
ST A GE Vcc
7
NON INV.
INPUT
IC001 < Audio AMP.> TA8200AH
4
5
3
1
2
6
9
7
10
12
11
8
+
Ripple Filter
AMP.1
IN 1
+
+
+
+
IN 1
Pre-GND
400Ω
400Ω
20KΩ
20KΩ
+
AMP.2
IN 2 IN 2
+
Vcc
OUT 1
PW-GND
OUT 2
+
+
RL
RL
10
9
Pulse
DET
Pulse
I/F
Clamp
VCO
SW2
11
Filter
PLL
DET
12
13
System
SW1
LIM
KILLER
Bell/EQU
Filter
SW3
1415
ACC
Bell/EQU
Adj
16
1
2
3
ID-KIL
ID
4
5
F0 Adj
6
7
SW/ALC
8
F0-Fil Kil-Fil
4.43DC ID-Fil 4M-DC
R-Y Out
B-Y Out GND
4MHz InSC-In
4.43MHz In
AV/SECAMKil-Out
Video In
VccEQU-Adj
IC281 <SECAM Decoder> LA7642N
4
5
3
1
2
6
7
8
INPUT 2
INPUT 1
OUTPUT Vcc
N.C.
N.C.
GND
CONTROL
INPUT
IC1201 < AV Switch > LA7016
IC Block Diagrams
-8-
VDD
VDD
VDD
VDD
MIRROR 2
VDD
FLASHDIODE
1x
VOC
Inverting
Input
(3x)
1,2,3
9,8,7
3x
VDD
6
5
4
Non-inverting
Input
Vip
MIRROR 1
V
bias
MIRROR 3
LEVEL-
SHIFTER 1
LEVEL-
SHIFTER 2
DIFFERENTIAL
STAGE
CURRENT
SOURCES
GND
THERMAL
PROTECTION
Note: One amplifier shown.
Cathode
Output
(3x)
Vi
IC701 < Triple Video Output Amplifier.> TDA6103Q/N3
IC3701 < Audio Control & Surround > NJW1138M
10
7
1
6
9
8
20
22
5
4
NJRC
ORIGINAL
SURROUND
&
SIMULATED
SURROUND
IIC BUS
INTERFACE
AGC
BIAS
TONE
VOL 1
TONE
27
VOL 1
VOL 2
VOL 2
19
18
17
14
13
16
15
21
30
23
24
25
26
12
11
IN 1a
AGC
SS-FIL OUT 1a
IN 2a
TONE
Ha
TONE
La
OUT 2a
CVA
CVB
CTH
CTL
AUX0
AUX1
SCL
SDA
V+
GND
VREF
OUT 2b
SR-FIL
OUT 1b
IN 2b
TONE
Hb
TONE
Lb
IN 1b
Service Information
-9-
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
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