Sanyo CP29SV2Z User manual

SERVICE MANUAL Colour Television
Product Code: 111356417
Original Version
Chassis Series: AC5-D
C4ZW
FILE NO.
Model No. CP29SV2Z
Service Ref. No. CP29SV2Z-00
(Australia)
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.
REFERENCE NO. SM5110407
0
7
14
85
23
6
9
P▲
P▼
JXMYA
-/--
PP
TV/AV
A B
CH SCAN
TIMER
MENU PIC MODE
SWAP
BASS
SURROUND
Specifications
Power Source . . . . . . . . . AC220-240V, 50Hz/60Hz.
Colour System . . . . . . . . PAL (AV Input: PAL/NTSC4.43/NTSC/PAL-60Hz)
Television 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)
Headphone jack: Mini stereo jack x 1
Speaker . . . . . . . . . . . . . . 6 cm x 12cm x 2 pcs.
Sound Output . . . . . . . . . 10W + 10W
Dimensions . . . . . . . . . . . 770 (W) x 590 (H) x 495 (D)mm
Weight . . . . . . . . . . . . . . . approx. 39.9 Kg
Specifications subject to change without notice.

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 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 net-
works 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 con-
structed 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 ser-
vice 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 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 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 .

-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
15
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
4EXT. 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
LR
L-OUT
R-OUT
IC3702
52
54
SIF OUT
SIF IN
14
VIDEO IN
1H
DL
RGB
MATRIX
MAIN SIGNAL PROCESSING CIRCUIT
(Not equipped)

-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
21
18
17
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

-5-
IC Block Diagrams
IC201 < IF/Video/Chroma/Def. > LA76818
1
DC
VOL
SW
FM
DET
23456
IF
AGC
RF
AGC
VIF
7
8910
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
PA L
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> LA76818
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
Tr a p
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
Thermal
Protection
-
+
AMP
Pump
Up
1
INVERTING
INPUT
2
Vcc
3
PUMP UP
OUT
4
GND
5
Ver. OUTPUT
6
OUTPUT
STAGE Vcc
7
NON INV.
INPUT
4
5
3
1
2
69
7
10
12
11
8
+
Ripple Filter
AMP.1
IN 1 +
+
+
+
++
IN 1
Pre-GND
400Ω
400Ω20KΩ
20KΩ
+
AMP.2
IN 2 IN 2
+
Vcc
Vcc
OUT 1
PW-GND
OUT 2
+
+
RL
RL
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
IC001 < Audio AMP.> TA8200AH

IC Block Diagrams
-8-
VDD VDD VDD
VDD
MIRROR 2
VDD
FLASH-
DIODE
1x
VOC
Inverting
Input
(3x)
1,2,3
9,8,7
3x
VDD
6
5
4
Non-inverting
Input
Vip
MIRROR 1
Vbias
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
IC3701 < Audio Control & Surround > NJW1138MP
10 7
1
6
98
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(less than
0.75V) 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

-10-
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
Press and hold for more than 2 seconds
TV/AV MENU
+P
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