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Sanyo CP20SR1 Service Manual

Colour tv
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SERVICE MANUAL Colour Television
Specifications
Power Source . . . . . . . . . AC220-240V, 50Hz.
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 output: Phono jack
Audio monitor output: Phono jack
Sound Output (RMS) . . . . 2 W
Speaker . . . . . . . . . . . . . . 5 cm X 9 cm X 1 pc.
Dimensions . . . . . . . . . . . 496 (W)
Weight . . . . . . . . . . . . . . . approx. 17.2 Kg
Specifications subject to change without notice.
C2JK/C2JM
GAM E
-
+
CH
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)
445.5 (H)
470 (D)mm
FILE NO.
Model No. CP20SR1
(Australia/New Zealand)
Service Ref. No.
CP20SR1-50
(Australia)
CP20SR1-60
(New Zealand)
TV/AV
TIMER
1
2
3
4
5
6
7
8
9
0
-/--
BASS
A B
SURROUND
P
P
P
CH SCAN
P
SWAP
MENU
PIC MODE
JXMYA
Product Code: 111355209
Original Version
Chassis Series: AC5-G
- NOTE -
The electric specification of the product of all
Service Ref. No. is completely the same.
The difference is as follows:
1) Destination CP20SR1-50 ... Australia
CP20SR1-60 ... 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)
SM
5110508

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  • Page 1 Service Ref. No. is completely the same. New Zealand The difference is as follows: VHF: 1-11 1) Destination CP20SR1-50 ... Australia UHF: 21-69 CP20SR1-60 ... New Zealand CATV: S1-S41, X, Y, Z, Z+1, Z+2 2) The difference in a parts list is only a rated Video IF .

  • 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 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: Service Adjustments With Replacing Memory Ic (Ic802)

    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. B-VOLTAGE SUPPLY CHECKING HIGH VOLTAGE CHECK (1) Connect DC meter to TP-B and the ground. Note: +B (+130V) Voltage Check and Grayscale Adjustment (2) Tune the receiver to an active channel and synchro- must be completed before attempting High Voltage Check.

  • 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

    610 292 3094 CABINET FRONT-C2JY 645 041 7252 BADGE,SANYO*43.5X10L43.5 610 310 8490 CABINET BACK -C2JK 610 306 7759 LABEL RATING-C2JK (CP20SR1-50) 610 306 7766 LABEL RATING -C2JM (CP20SR1-60) 645 054 3579 ASSY,REMOCON JXMYA 610 300 5102 RC-BATTERY LID 610 011 6405...

  • Page 18: Chassis Electrical Parts List

    Chassis Electrical Parts List C2JK 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 C2JK Ref. No. Part No. Description Ref. No. Part No. Description 405 020 7907 TR 2SC945A-RA 409 320 5700 IC UPC78M05AHF Q683 405 089 0000 TR 2SA1707-S IC501 409 449 4103 IC LA78040 405 089 0109 TR 2SA1707-T 409 507 0900 IC LA78040N 405 009 6907 TR 2SB985-S...
  • Page 20 C2JK Ref. No. Part No. Description Ref. No. Part No. Description 403 049 4204 ELECT 10U M 404 093 6107 MT-POLYEST 0.1U M 275V C208 403 367 0407 CERAMIC 0.1U K C602 404 060 7205 MT-POLYEST 0.1U M 250V C209 404 084 8707 ELECT 0.47U M...
  • Page 21 C2JK Ref. No. Part No. Description Ref. No. Part No. Description R006 401 024 5604 CARBON 1 JA 1/6W R356 401 105 0603 MT-GLAZE 10K JA 1/16W R010 401 105 3307 MT-GLAZE 2.7K JA 1/16W R357 401 026 7002 CARBON 3.9K JA 1/6W R011...
  • Page 22 C2JK Ref. No. Part No. Description Ref. No. Part No. Description R805 401 105 7909 MT-GLAZE 0.000 ZA 1/16W 652 001 0475 PIPE CORE R811 401 105 3406 MT-GLAZE 27K JA 1/16W L432 610 031 9998 PIPE CORE R812 401 105 0603 MT-GLAZE 10K JA 1/16W 645 018 7025...
  • Page 23 C2JK Ref. No. Part No. Description Ref. No. Part No. Description 407 057 9800 ZENER DIODE RD9.1EB3 610 307 2982 ASSY,PWB,CRT C4MY 408 048 0400 ZENER DIODE MTZJ9.1C-52 1AA0B10S1150B D617 407 006 0100 DIODE ERA91-02 D631 407 009 8806 DIODE RU3AM TRANSISTOR D633 407 007 7603...
  • Page 24 DIODE 1SS355-TE-17 D752 407 149 0807 DIODE 1SS355-TE-17 D753 407 149 0807 DIODE 1SS355-TE-17 D754 407 149 0807 DIODE 1SS355-TE-17 MISCELLANEOUS K701L 645 026 2005 SOCKET,CRT 8P 652 001 0321 SOCKET,CRT 8P SANYO Electric Co., Ltd. A14800/July/’03/30 BB Printed in Japan...

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