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Sanyo CP21G1 Service Manual

Colour television
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SERVICE MANUAL Colour Television
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
New Zealand
Video IF . . . . . . . . . . . . . . 38.0MHz
Aerial Input Impedance . . 75Ω
Ext. Terminals
Video inputs: Phono jack ✕ 2 (1Vp - p, 75Ω)
Audio inputs: Phono jack ✕ 2 (436mVrms, more than 40KΩ)
Sound Output (RMS) . . . . 2 W
Speaker . . . . . . . . . . . . . . Diameter 8cm ✕ 2 pcs.
Dimensions . . . . . . . . . . . . 502 (W) ✕ 461.6 (H) ✕ 493.3 (D)mm
Weight . . . . . . . . . . . . . . . approx. 19.5 Kg
Specifications subject to change without notice.
C4MY/C4MZ
VIDEO
AUDIO
TV/AV
MENU
VHF: 0-11, 5A
UHF: 28-69
CATV: S1-S41, X, Y, Z, Z+1, Z+2
VHF: 1-11
UHF: 21-69
CATV: S1-S41, X, Y, Z, Z+1, Z+2
FILE NO.
Model No. CP21G1
(Australia/New Zealand)
Service Ref. No. CP21G1-00
TV/AV
TIMER
1
2
3
4
5
6
7
8
9
0
-/--
BASS
A B
SURROUND
PL
P
P
CH SCAN
PM
SWAP
MENU
PIC MODE
JXMYA
Product Code: 111367018
Original Version
Chassis Series: AC5-G
- NOTE -
Service Ref. No. CP21G1-00 is electrically the
same as Service Ref. No. CP21G1-10.
The difference between Service Ref. No.
CP21G1-00 and CP21G1-10 are as follows:
1) Destination CP21G1-00...Australia
CP21G1-10...New Zealand
2) The difference in a parts list is only a rated
label.
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.
(Australia)
CP21G1-10
(New Zealand)
SM
5110474

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  • Page 1 Channel Coverage ..Australia VHF: 0-11, 5A - NOTE - UHF: 28-69 Service Ref. No. CP21G1-00 is electrically the CATV: S1-S41, X, Y, Z, Z+1, Z+2 same as Service Ref. No. CP21G1-10. New Zealand The difference between Service Ref. No.

  • Page 2: Table Of Contents

    Contents Safety Notice ............... . 2 Chassis Block Diagram .

  • Page 3: Chassis Block Diagram

    Chassis Block Diagrams MAIN SIGNAL PROCESSING CIRCUIT ✻ Teletext decoder and SECAM decoder are not equipped. ✻ ✻...
  • Page 4 Chassis Block Diagrams SYSTEM CONTROL...

  • Page 5: Ic Block Diagrams

    IC Block Diagrams IC201 < IF/Video/Chroma/Def. > LA76818A Audio Output SIF Input FM Output/Selected SIF APC Filter Audio Output SIF Output PIF AGC Ext. Audio Input RF AGC Output PIF Input1 APC Filter VCO Coil 1 PIF Input 2 VCO Coil 2 IF Ground VCO Filter IF Vcc...
  • Page 6 IC Block Diagrams IC201 <IF System Block Diagram> LA76818A...

  • Page 7: Service Information

    IC Block Diagrams IC501 < Vertical Output > LA78040/LA78040N Thermal Protection Pump IC001 < Audio AMP.> LA4266 300Ω 30kΩ Filter OUT2 Power Service Information I Protection Circuit 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.

  • Page 8: Service Adjustments With Replacing Memory Ic(Ic802)

    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].
  • Page 9 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. Service mode adjustments table in CPU ROM INITIAL INITIAL DATA DATA ITEM DESCRIPTION SETUP ITEM DESCRIPTION SETUP...
  • Page 10 Service Adjustments with Replacing Memory IC(IC802) INITIAL INITIAL DATA DATA ITEM SETUP DESCRIPTION DESCRIPTION ITEM SETUP RANGE RANGE DATA DATA CPU Debug Date. 00~255 CPU Debug Date. 00~255 CPU Debug Date. 00~255 CPU Debug Date. 00~255 CPU Debug Date. 00~255 CPU Debug Date.

  • Page 11: Entering To Service Mode

    Service Adjustments with Replacing Memory IC(IC802) [Entering to Service Mode] 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. MENU Display for [RF AGC] RF AGC adjustment MENU Read Status SI.

  • Page 12: Service Mode Adjustments

    Service Mode Adjustments Following adjustments should be carried out when the memory IC is replaced. How to enter the service mode and adjust values, please refer to “ Entering to Service mode” on page 11. Item 05 [V-SCO] V-S CORRECTION Item 01 [RF AGC] AGC NOTE: Do not attempt this adjustment with weak signal.
  • Page 13 Service Mode Adjustments Items 14-17, 19-21 GREY SCALE (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.

  • Page 14: Service Adjustments

    Service Adjustments Following adjustments are not required to readjust when replacing the memory IC. HIGH VOLTAGE CHECK B-VOLTAGE SUPPLY CHECKING (1) Connect DC meter to TP-B and the ground. Note: +B (+130V) Voltage Check and Grayscale Adjustment must be completed before attempting High Voltage Check. (2) Tune the receiver to an active channel and synchro- nized picture.

  • Page 15: Special Function

    Special Function The following special functions can be set up on this TV How to set the special function: set. Note: When making the VOLUME LOCK setting, set the (1) Volume Lock setting desired maximum sound volume by pressing the VOLUME + or - button before entering Special Function setting mode.

  • Page 16: Purity And Convergence Adjustment

    Purity and Convergence Adjustment CAUTION: The Convergence and Purity adjustments have been made at the factory. Readjustment should be made only after picture tube or deflection yoke replacement, following the steps below: PURITY ADJUSTMENT 8. Tighten the mounting screw of the Deflection Yoke. Adjust 1.

  • Page 17: Cabinet Parts List

    CABINET FRONT-C4MA 645 040 4672 BADGE,SANYO*43.5X10L43.5 645 041 7269 BADGE,SANYO*43.5X10L43.5 610 306 8848 CABINET BACK-C4MY 610 305 3646 LABEL RATING-C4MY (CP21G1-00) 610 308 4145 LABEL RATING-C4MZ (CP21G1-10) 645 054 3579 ASSY,REMOCON JXMYA 610 300 5102 RC-BATTERY LID-JXMYA 610 305 3547...

  • Page 18: Chassis Electrical Parts List

    C4MY Chassis Electrical Parts List (Service Ref. No. CP21G1-00, CP21G1-10) 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 have special significance to product safety.
  • Page 19 C4MY Ref. No. Part No. Description Ref. No. Part No. Description 405 020 7501 TR 2SC945A-PA 409 507 0900 IC LA78040N 405 020 7709 TR 2SC945A-QA IC651 409 241 5407 IC BA178M05T 405 020 7907 TR 2SC945A-RA 409 265 4806 IC L78M05CV Q684 405 011 8401...
  • Page 20 C4MY Ref. No. Part No. Description Ref. No. Part No. Description 403 051 4209 ELECT 470U M 403 325 5109 CERAMIC 220P K C211 403 367 0407 CERAMIC 0.1U K C610 403 049 0008 ELECT 1U M C212 403 155 4204 CERAMIC 15P J C611...
  • Page 21 C4MY Ref. No. Part No. Description Ref. No. Part No. Description R1006 401 027 6608 CARBON 75 JA 1/6W R434 401 009 5803 CARBON 330 JA 1/2W R1007 401 024 7707 CARBON 100K JA 1/6W R441 401 064 8702 OXIDE-MT 1K JA R103 401 061 8101...
  • Page 22 C4MY Ref. No. Part No. Description Ref. No. Part No. Description R822 401 105 7909 MT-GLAZE 0.000 ZA 1/16W 652 001 0147 CORE,PIPE R830 401 105 0504 MT-GLAZE 1K JA 1/16W L605 645 005 0763 CORE,PIPE R831 401 105 5202 MT-GLAZE 470 JA 1/16W L631...
  • Page 23 C4MY Ref. No. Part No. Description Ref. No. Part No. Description D685 407 099 5600 ZENER DIODE MTZJ6.8A 405 001 7605 TR 2SA1015-Y(SAN) 407 057 4003 ZENER DIODE RD6.8EB1 Q751 405 002 0308 TR 2SA1037K-T-96-R 408 047 8605 ZENER DIODE MTZJ6.8A 405 002 0407 TR 2SA1037K-T-96-S D686...
  • Page 24 SANYO Electric Co., Ltd. A14800/Mar./’03/30 BB Printed in Japan...
  • Page 25 N: Metalized carbon 8. This circuit diagram covers a basic or representative chassis only. There Kind (M.carbon) S: Oxied metalized CP21G1-00 W: Wire wounding Rated wattage (1/2W) POSISTER may be some components or partial circuit differences between the...
  • Page 26 CRT BOARD (Component Location) Waveforms & Voltages (On the Main Board) R713 IC201 (IF/VIDEO/CHROMA) R719 Q701 (B-OUT) R711 Pin-1 2.3V 2.2V 2.7V 3.2V 2.9V 2.9V 5.0V 2.5V L702 Q701A 2.3V 4.3V 4.1V 4.3V 1.6V 1.7V 1.6V 8.3V R712 2.2V 2.1V 2.1V 2.0V 2.2V...

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