Sanyo CP21CE1 Schematic
SERVICE MANUAL Colour Television
Specifications
Power Source . . . . . . . .AC220-240V, 50/60Hz.
Colour System . . . . . . . .PAL, NTSC4.43, NTSC, PAL 60Hz
Television System . . . . .B/G, D/KK’, I, M/M
Channel Coverage . . . . .VHF: E2-E12, R1-R12, K1-K9, J1-J12, A2-A13
0-11, 5A (Aus.), 1-11 (NZ)
UHF: 21-69, A14-A69, J13-J62, 28-69 (Aus.)
CATV: S1-S41, X, Y, Z, Z+1, Z+2
Video IF . . . . . . . . . . . . . .38.0 MHz
Aerial Input Impedance .75Ω
Ext. Terminals
Video inputs: Phono jack 2 (1.0Vp
-
p, impedance 75Ω)
Audio inputs: Phono jack 2 (436mVrms, impedance more than 40KΩ)
Video monitor output: Phono jack 1 (1.0Vp
-
p, 75Ω)
Audio monitor outputs: Phono jack 1(436mVrms, Impedance less than
600Ω)
Speaker . . . . . . . . . . . . . . 5 cm 9 cm 2 pcs.
Sound Output . . . . . . . . . 2.5W + 2.5W (RMS)
Dimensions . . . . . . . . . . . 580 (W) 460 (H) 465 (D)mm
Weight . . . . . . . . . . . . . . . approx. 19.5 Kg
Specifications subject to change without notice
Original Version
Chassis Series: AC6-A
C8VV
FILE NO.
Model No. CP21CE1
Service Ref. No. CP21CE1-00
(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 differ from the design specifications. Refer to
the specification table.
Product Code:113002116
REFERENCE NO. SM3010159
VIDEO
TV/AV
AUDIO
MENU
- +
CH
POWER
TV/AV
TIMER
x
3
2
1
56
4
9
8
7
PP
-/--
0
CH
CH SCAN
SWAP
MENU
.
CH
PICTURE
A B
SOUND
S. SYS
BASS
SURROUND
JXPSC
Contents
-2-
Safety Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Chassis Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
IC Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
CPU Port Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Service Adjustment with Replacing Memory IC(IC801) . . . . . . . . . . . . 8-11
Service Mode Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-13
Service Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Special Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Purity and Convergence Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Mechanical Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Protection Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Cabinet Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Chassis Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-25
Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26-27
Voltages and Waveforms Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27-28
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 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 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 .
-3-
Chassis Block Diagrams
CRT
Q901
DY
L902
FOCUS
5
IC501
VERTICAL
1
G-OUT
R-OUT
13
12
SCREEN
B-OUT
14
V-OUT
17
FBT
T471
T431
H-DRIVE
H-OUT
21
HV
Q432
TRANS
Q431
FEED BACK
ABL
KEY-IN
ON-TIMER
292639
10
RC-IN
5V-1
CPU, VERTICAL
IC202
9V
AUDIO CONTROL
13
T611
TRANS
CONVERTER
CPU, TUNER, MEMORY
5VRC
IC651
PRIMARY
VERTICAL
24V
12
CIRCUIT
AC
AUDIO AMP.
14V
14
FBT, TUNER
130V
11
D610
X161
SAW
FILTER
63
IF-IN
IF OUT
A101
64
IF-IN
10
IC001
TUNER
IC201
IF/VIDEO/DEF.
CPU/CHROMA/
AUDIO AMP.
8
L-OUT
5
FM-OUT
4
12
R-OUT
54
9
VIDEO-IN
EXT. AUDIO-IN
+
52
46
VIDEO-IN
VIDEO-OUT
SDA/SCL
31/32
6
AUDIO-OUT
5/6
IC801
MEMORY
(Power ON=High)
STB
SP901
SP902
AV-FRONT
AUDIO (L)-IN
V-IN
AV-REAR
V-IN
V-OUT
AUDIO (L)-IN
AUDIO (L)-OUT
RC
RECEIVER
KEYS
FRONT
LED
Chassis Block Diagrams
-4-
System Control
QXXAVC647---N
A101
4
KEY
SWITCH
F/S TUNER
5
PHOTO COUPLE
CRT UNIT
etc.
POWER CIRCUIT
30
SOUND MUTE
(MUTE=H)
KEY SWITCH IN
39
IIC SDA
IIC SCL
31
32
IC201
QXXAVC647---N
9
40
EXT. AUDIO INPUT
RESET INPUT (RESET=LOW)
POWER ON/OFF
(ON=HIGH, OFF=LOW)
36
26
RC SIGNAL IN
(ACTIVE=HIGH)
OSD BLUE OUT(Active=High)
OSD GREEN OUT(Active=High)
OSD RED OUT(Active=High)
14
12
13
34
33
29
(ON TIMER ON=Low)
ON-TIMER LED OUT
CPU OSC OUT
CPU OSC IN
OSC
X801
32.768KHz
23
3132
IIC SDA
IIC SCL
(POWER ERROR=LOW)
POWER PROTECT IN
56
IC801
MEMORY
IC001
AUDIO AMP.
RC PRE-AMP.
LED
-5-
IC201 < CPU/IF/Video/Chroma/Def.> LA76931AD56S1-E
IC Block Diagrams
OUT
FM
VOLUME
OUT
5V
EXT-AUDIO
IN
ABL
RGB
9V
0.47U
(M)
0.015U
(M)
(METAL FILM)
VDD
INT0/P00
INT1/P01
P02
INT3/P03
IRAD
PWMI/P14
PWM2/P15
P17
PWM3/P16
SDA1/P12
SCK1/P13
10P
42
120
OUT
HOR
0.022U
39K
0.022U
1500P
10K 0.01U
100U
0.01U
100U
0.01U
OUT
R
OUT
G
OUT
B
V RAMP
OUT
VER
100U
0.015U
+
1U
1CHIP GND
10U
+
+
+
4.7K
1U
+
+
0.01U
3K
1
2
500K
DET
BPF
3
4
+
AMP
DET
FM
5
VOL
DC
6
7
8
9
HOR
HOR
RAMP
VER
C-SYNC
ACL
C/D
SHIFTER
PORT 1
10
11
12
13
14
15
16
17
18
VCC
2019
OUT
21
22
23
24
25
26
27
28
29
3130
32
FM
SW
ABL
DRIVE/OUT-OFF
VER
PHASE
CLOCK
I/O
SEP
DATA
VER
AFC2
BPF
AMP
LIM
SPLL
CONTRAST
OSD
OSD
SW
CONTRAST
BRIGHT
SEP
AFC1
FBP
FS
I
SYNC
B
G
SOUND
DET
OSD
R
OSD
BUS
CONTROL
0
ADC
VS
HS
CLOCK
TIMER
SW
SHARP
SG
MATRIX
CLAMP
C/D
HS
VS
AMP
VIF
VIDEO
DET
TRAP
V/Y
DL
BG
RGB
COLOR
HOR
ENABLE
CORE
TIMER
REST
BUS
CPU
BASE
ROM
RAM
PDC
DC
TINT
1/256
CVBS
AGC
TRAP
VCO
IF
CPU TST B
BPF
YC SW
ACC
PAL S W
DEMO
D1 SW
1H DL
HOR
VCO
CPU TST G
AGC
RF
VIDEO
AMP
SW
DAH
AFT
CLMP
VIDEO
SW
CLMP
SYNC
FSC
APC1
VXO
VCO
DDS
APC2
DC ADJ
CLMP
RESET
V DET
CPU TST R
RESET
AFT
VDD
PLL
RST
PORT 0
I/O
CONTROL
CLOCK
64
SAW
FIL
63
62
61
60 59
0.1U
47K
100U
0.01U
0.047U
100U
0.01U
0.033U
0.33U
100U
0.01U
510K
560
680K
+
1U
+
+
1U
12K
0.1U
4.43M
0.1U
+
1U
750
+
1U
+
1U
0.1U
+
CPU GND
2.2U 100
+
150K
AN7/P07
AN6/P06
AN5/P05
AN4/P04
+
2.2U
15P
18P
47K
0.47U
+
20K
100
+
0.47U
58
57
56
55
54
53
52 51
50
49
48
47
46
45
44
43
42
41
40 39 38
37
36
35
34
33
IF IN
RF-AGC
VIDEO
OUT
VCC
+
INT-V
VCC:5V
VCD
EXT-V
SVO/FSC
CR
CB
DVD-Y
YC-Y
YC-C
FBP
VDD
-6-
IC Block Diagrams
IC001 < Audio AMP.> LA42051-E
IC501 < Vertical Output > LA78040/LA78040N
VCC
7
Thermal protection circuit
Pop noise prevention block
6
P. P
10
8
Power
GND
OUT
Pre
GND
IN
Standby
5
REF amplifier
3
4
Input amplifier Output amplifier
Ripple Filter Block
1
Ripple
Filter
1
INVERTING
INPUT
2
Vcc
-
+
AMP
3
PUMP UP
Pump
Up
OUT
4
GND
Thermal
Protection
5
6
OUTPUT
Ver. OUTPUT
7
NON INV.
INPUT
STAGE Vcc
-7-
CPU Port Functions
Pin No. Function Name Function
1 SIFout SIF Output (NICAM)
2 IFAGC-F IF AGC Filter
3 SIF-IN SIF Input
4 FM-F Filter for the DC loop of FM detector
5 FMout FM detector output
6 Aud out Audio output
7 SND-APC-F Snd VCO frequency is locked at 500kHz from SIF
8 IF-Vcc DC Supply pin for IF circuit
9 VM/Ext-A-IN External audio signal input
10 ABL Auto Beam Limiter function
11 RGB Vcc Vcc input pin of RGB output block function
12 R-Out R signal output pin function
13 G-Out G signal output pin function
14 B-Out B signal output pin function
15 NC Not Connected
16 Vramp To generate a ramp waveform for the reference V-out
17 V-out Output pin of vertical synchronization ramp signal
18 Iref Producing reference current function
19 H-Vcc Vcc of Horizontal deflection and BUS interface
20 AFC-F AFC Filter pin of horizontal VCO function
21 H-out Horizontal output pin
22 VCD-GND Video Chroma Deflection GND
23 Power Fail IN Pow er Fail Input function
24 S-TERM IN S-Video input
25 STATUS IN Factory PC mode status (L=ON)
26 Remote IN Remote Control signal receiver
27 P14/PWM1
28 P15/PWM2
29 ON-TIMER LED OUT On t imer led out function
30 MUTE OUT Mute out function
31 IIC SDA1 IIC-Bus Data Line
32 IIC SCK1 IIC-Bus Clock Line
33 X’tal Crystal Oscillator
34 X’tal Crystal Oscillator
35 5V Supply (5V)
36 Power Out Power On/Off signal output
37 Bass Expander Bass Expander On/Off function
ON/OFF OUT
38 VIF M OUT VIF M Out/Bilingual Out function
/Bilingual Out
39 AD KEY IN Key signal input
40 RESET RESET pin function
41 FILT FILT pin function
42 GND Ground
43 CCD-Vcc Vcc (5V) pin for 1H delay-line
44 FBP-IN Fly Back Pulse Input
45 YC-C Y/C-C Input function
46 YC-Y Y/C-Y Input function
Pin No. Function Name Function
47 C-APC2 AFC filter pin of chroma VCO. (3.58MHz)
48 DVD-Y DVD-Y Input
49 CB-IN CBInput (for DVD)
50 X’tal 4.43MHz Crystal
51 CR-IN CRInput (for DVD)
52 SVO/FSC Selected Video Output or FSC Output
53 C-APC-F Chroma APC Filter
54 Ext-Video-IN Ext Video Input & Y Input in S-VHS mode
55 VCD-Vcc Video Chroma Deflection VCC
56 Int-Video-IN Int. Video Input & Chroma Signal Input in S-
VHS mode
57 Blk-F Black peak level detection in black stretch circuit.
58 PIF-APC-F APC filter pin for PLL circuit function.
59 AFT Automatic Fine Tuning Output pin
60 Video out Video Output pin
61 RF AGC RF AGC Output pin
62 IF-GND Ground of IF circuit
63 VIF IN PIF input pin
64 VIF IN PIF input pin
-8-
Service Adjustments with Replacing Memory IC(IC801)
Note: The CPU (IC201) and memory IC (IC801) store the service adjustments data and controls data for each
circuit.When the Memory IC(IC801) 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.
5. Switch off the TV set by pressing the Power Switch button on the TV set while the above On-Screen Display is
still 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
- Colour system : AUTO
CLR
CLR
Press and hold for more than 2 seconds
[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 Position Item 04, V-SHIFT
Vertical linearity Item 06, V-LIN
Vertical-S correction Item 07, V-SCO
Gray scale Item 17-20, 22-24
Further adjustment please refer to page 12 and 13.
(displayed in yellow color)
(displayed in red color)
TV/AV
MENU
- +
CH
TV/AV
MENU
- +
CH
-9-
Service Adjustments with Replacing Memory IC(IC801)
MENU
[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 control
handset.
3. Adjust data value by pressing the VOLUME + or VOLUME
-
button on the remote control handset.
Example
MENU
0102030405......96...
...9695949392......01
07
24
MENU
SI. 11100101S2.11110001
TV/AV
MENU
- +
ADDRESS
01
RF AGC
CH
DATA
30
TIMER
x
SI. 11100101S2.11110001
ADDRESS
06
V-SCO
DATA
12
SI. 11100101S2.11110001
ADDRESS
DRV R 64 B 64
23
DATA
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