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Sanyo CP21SA1 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
Audio inputs: Phono jack
Video monitor outputs: Phono jack
Audio monitor outputs: Phono jack
Sound Output (RMS) . . . . 2 W
Speaker . . . . . . . . . . . . . . Diameter 8cm
Dimensions . . . . . . . . . . . . 501 (W)
Weight . . . . . . . . . . . . . . . approx. 20.5 Kg
Specifications subject to change without notice.
C5TW/C5TV
TV/AV
MENU
-
+
P
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
2 (1Vp - p, 75Ω)
2 (436mVrms, more than 40KΩ)
1(1Vp - p, 75Ω)
1(436mVrms, less than 600Ω)
1 pc.
475.5 (H)
491.5 (D)mm
FILE NO.
Model No. CP21SA1
(Australia/New Zealand)
Service Ref. No. CP21SA1-50
TIMER
TV/AV
1
2
3
4
5
6
7
8
0
-/--
9
BASS
A B
SURROUND
P
P
P
CH SCAN
P
SWAP
MENU
PIC MODE
JXMYA
Product Code: 111362017
Original Version
Chassis Series: AC5-G
- NOTE -
Service Ref. No. CP21SA1-60 is electrically the
same as Service Ref. No. CP21SA1-50.
The difference between Service Ref. No.
CP21SA1-50 and CP21SA1-60 are as follows:
1) Destination CP14SA1-50...Australia
CP14SA1-60...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.
(G)
(Australia)
CP21SA1-60
(New Zealand)
SM
5110467

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  • Page 1 Channel Coverage ..Australia VHF: 0-11, 5A - NOTE - UHF: 28-69 Service Ref. No. CP21SA1-60 is electrically the CATV: S1-S41, X, Y, Z, Z+1, Z+2 same as Service Ref. No. CP21SA1-50. 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 Diagram

    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 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) [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...
  • Page 10 Service Adjustments with Replacing Memory IC(IC802) DATA INITIAL INITIAL DATA DESCRIPTION ITEM DESCRIPTION ITEM RANGE DATA DATA RANGE 00~255 CPU Debug Date. CPU Debug Date. 00~255 00~255 CPU Debug Date. 00~255 CPU Debug Date. 00~255 CPU Debug Date. CPU Debug Date. 00~255 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

    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

    610 306 8794 CABINET FRONT-C5TW 645 039 1866 BADGE,SANYO 610 305 4872 CABINET BACK-C5TW 610 305 5268 LABEL RATING-C5TW (CP21SA1-50) 610 306 1818 LABEL RATING-C5TV (CP21SA1-60) 610 256 7670 HOLDER AC CORD-SGP-D4VA 645 054 3579 ASSY,REMOCON JXMYA 610 300 5102...

  • Page 18: Chassis Electrical Parts List

    Chassis Electrical Parts List C5TW (Service Ref. No. CP21SA1-50, CP21SA1-60) 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 C5TW Ref. No. Part No. Description Ref. No. Part No. Description 405 020 7907 TR 2SC945A-RA 409 265 4806 IC L78M05CV Q684 405 011 8401 TR 2SC1740S-Q 409 172 1509 IC MC78M05CT 405 011 8500 TR 2SC1740S-R 409 320 5700 IC UPC78M05AHF 405 011 8609 TR 2SC1740S-S...
  • Page 20 C5TW Ref. No. Part No. Description Ref. No. Part No. Description C212 403 155 4204 CERAMIC 15P J C611 403 247 5003 CERAMIC 470P K C221 403 305 3507 CERAMIC 0.1U Z C612 403 237 8007 MT-COMPO 0.1U J C222 403 305 3507 CERAMIC 0.1U Z...
  • Page 21 C5TW Ref. No. Part No. Description Ref. No. Part No. Description R106 401 024 6700 CARBON 100 JA 1/6W R475 401 009 5803 CARBON 330 JA 1/2W R107 401 024 6700 CARBON 100 JA 1/6W R479 401 025 7805 CARBON 2.2K JA 1/6W R108...
  • Page 22 C5TW Ref. No. Part No. Description Ref. No. Part No. Description R833 401 105 0603 MT-GLAZE 10K JA 1/16W 652 001 0147 CORE,PIPE R834 401 105 0603 MT-GLAZE 10K JA 1/16W DIODE R835 401 105 0603 MT-GLAZE 10K JA 1/16W R836 401 105 0603 MT-GLAZE...
  • Page 23 C5TW Ref. No. Part No. Description Ref. No. Part No. Description D686 407 099 5501 ZENER DIODE MTZJ6.2C 405 002 6706 TR 2SA1179-M6 407 057 2801 ZENER DIODE RD6.2EB3 405 002 6904 TR 2SA1179-M7-TB 408 047 8308 ZENER DIODE MTZJ6.2C-52 405 173 9605 TR 2SA1235A1E D861...
  • Page 24 SANYO Electric Co., Ltd. A14800/Mar./’03/30 BB Printed in Japan...
  • Page 25 N: Metalized carbon Kind (M.carbon) 8. This circuit diagram covers a basic or representative chassis only. There S: Oxied metalized CP21SA1-50 W: Wire wounding may be some components or partial circuit differences between the Rated wattage (1/2W) POSISTER...
  • Page 26 CRT BOARD (Component Location) Waveforms & Voltages (On the Main Board) R713 IC201 (IF/VIDEO/CHROMA) R719 Q701 (B-OUT) Pin-1 2.3V 2.2V 2.7V 3.2V 2.9V 2.9V 5.0V 2.5V R711 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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