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Sanyo CP21KX2 Service Manual

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SERVICE MANUAL Colour Television
VIDEO
L-AU DIO-R
Specifications
Power Source . . . . . . . . . AC110-240V, 50Hz/60Hz.
Colour System . . . . . . . . PAL/NTSC4.43/NTSC/PAL-60Hz
Television System . . . . . . B/G, D/K, K', I, M/M
Channel Coverage . . . . . VHF: 0-11, 5A (Aus.), 1-11(NZ),
UHF: 21-69, A14-A69, J13-J62
CATV: S1-S41, X, Y, Z, Z+1, Z+2
Video IF . . . . . . . . . . . . . . 38.0MHz
Aerial Input Impedance . . 75Ω
Ext. Terminals
Video inputs: Phono jack ✕ 2 (1Vp - p, 75Ω)
Audio inputs: Phono jack(L/R) ✕ 2(436mVrms, more than 40KΩ)
Video monitor outputs: Phono jack ✕ 1(1Vp - p, 75Ω)
Audio monitor outputs: Phono jack (L/R) ✕ 1(436mVrms, less than 600Ω)
Sound Output (RMS) . . . . 5W + 5W
. . . . . . . . . 6 cm ✕ 12 cm ✕ 2 pcs.
Speaker
. . . . . . . . . 625 (W) ✕ 461 (H) ✕ 484 (D)mm
Dimensions
Weight
. . . . . . . . . approx. 21.2 Kg
Specifications subject to change without notice.
C4VZ
TV/AV MENU
CH
E2-E12, R1-R12, K1-K9, A2-A13, J1-J12
FILE NO.
Model No. CP21KX2
Service Ref. No. CP21KX2-50
TIMER
TV/AV
1
2
3
4
5
6
7
8
0
-/--
9
BASS
A B
SURROUND
PL
P
P
CH SCAN
PM
SWAP
MENU
PIC MODE
JXMYA
Product Code: 111358219
Original Version
Chassis Series: AC5-G1
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.
(A)
(Australia)
SM
5110601

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Summary of Contents for Sanyo CP21KX2

  • Page 1 FILE NO. SERVICE MANUAL Colour Television Model No. CP21KX2 (Australia) Service Ref. No. CP21KX2-50 TIMER TV/AV -/-- BASS SURROUND CH SCAN SWAP MENU PIC MODE TV/AV MENU VIDEO L-AU DIO-R JXMYA Product Code: 111358219 Specifications Power Source ..AC110-240V, 50Hz/60Hz.
  • Page 2: Table Of Contents

    Contents Safety Notice ............... . 2 Chassis Block Diagram .
  • Page 3: Chassis Block Diagram

    Chassis Block Diagrams (MAIN SIGNAL PROCESSING CIRCUIT)
  • Page 4 Chassis Block Diagrams SYSTEM CONTROL...
  • Page 5: Ic Block Diagrams

    IC Block Diagrams IC201 < IF/Video/Chroma/Def. > LA76818 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> LA76818...
  • Page 7: Service Information

    IC Block Diagrams IC501 < Vertical Output > LA78040/TDA9302H Thermal Protection Pump IC3701 < Audio Control / Surround > NJW1142MP SR-FIL MONa TONE Ha TONE La LINEa OUT a IN 1a IN 2a VOL 2 TONE VOL 1 IN 3a NJRC IIC BUS IN 4a...
  • 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 DATA INITIAL DATA INITIAL ITEM RANGE SETUP DESCRIPTION ITEM RANGE...
  • Page 10 Service Adjustments with Replacing Memory IC(IC802) DATA INITIAL DATA INITIAL ITEM RANGE SETUP DESCRIPTION ITEM RANGE SETUP DESCRIPTION DATA DATA TUNER Tuner Option 0~255 ROM Correction AV123 AV1/AV2/AV3 Option, 0=AV only, 0~255 ROM Correction 1=AV1, AV2, 2~3=AV1, AV2,AV3 0~255 ROM Correction 88 OPT POS Programme number Option, 0~255...
  • Page 11 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

    ASSY,BUTTON POWER-C4VKR 610 293 3741 DEC IND-C4SA 610 307 2784 ASSY,BUTTON UNITED-C4VKR 610 311 0790 CABINET FRONT-C4VZ 645 040 4672 BADGE,SANYO 645 041 7269 BADGE,SANYO 610 307 3248 DEC.SPEAKER-C4VKR 610 311 0851 CABINET BACK-C4TS 610 313 0262 LABEL RATING-PAL SMALL...
  • Page 18: Chassis Electrical Parts List

    C4VZ Chassis Electrical Parts List 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 C4VZ Ref. No. Part No. Description Ref. No. Part No. Description 405 013 7006 TR 2SC2274-F 405 015 8704 TR 2SC2812-L6-TB Q613 405 181 4609 TR 2SK3264 405 015 8902 TR 2SC2812-L7-TB Q614 405 006 6504 TR 2SA984-E 405 173 9803 TR 2SC3928A1R 405 006 6702 TR 2SA984-F...
  • Page 20 C4VZ Ref. No. Part No. Description Ref. No. Part No. Description C1002 404 084 8905 ELECT 10U M C234 403 215 2201 CERAMIC 0.01U K 403 049 4204 ELECT 10U M C243 403 215 2201 CERAMIC 0.01U K C1007 404 087 1606 ELECT 0.1U M C244...
  • Page 21 C4VZ Ref. No. Part No. Description Ref. No. Part No. Description C432 403 075 7101 CERAMIC 1000P K 500V 403 045 1504 ELECT 1000U M C433 403 076 3102 CERAMIC 3900P K 500V C645 404 088 6600 ELECT 2200U M C434 404 087 6007 ELECT...
  • Page 22 C4VZ Ref. No. Part No. Description Ref. No. Part No. Description R124 401 105 0603 MT-GLAZE 10K JA 1/16W R3732 401 105 0405 MT-GLAZE 100 JA 1/16W R125 401 105 3406 MT-GLAZE 27K JA 1/16W R422 401 020 2904 CARBON 47K JA 1/4W R130...
  • Page 23 C4VZ Ref. No. Part No. Description Ref. No. Part No. Description R668 401 105 5400 MT-GLAZE 47K JA 1/16W TRANSFORMER R669 401 027 2600 CARBON 5.6K JA 1/6W T431 652 001 1144 TRANS,DRIVE R670 401 105 5400 MT-GLAZE 47K JA 1/16W T471 645 057 4832 TRANS, FLYBACK...
  • Page 24 C4VZ Ref. No. Part No. Description Ref. No. Part No. Description 408 047 9206 ZENER DIODE MTZJ7.5C D633 407 007 7603 DIODE EU2 D352 407 063 8705 ZENER DIODE MTZJ5.1C 407 007 7801 DIODE EU2Z 407 056 9801 ZENER DIODE RD5.6EB1 D634 407 009 8905 DIODE RU3M...
  • Page 25 C4VZ Ref. No. Part No. Description Ref. No. Part No. Description 652 001 0154 OSC,CRYSTAL 4.433619MHZ X801 645 004 1938 OSC,CRYSTAL 32.768KHZ 645 004 1945 OSC,CRYSTAL 32.768KHZ 610 311 8949 ASSY,PWB,CRT C5RA 1AA0B10S1240B TRANSISTOR Q701 405 041 6507 TR 2SC2621-D-RA 405 041 6705 TR 2SC2621-E-RA 405 066 9903...
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  • Page 28 A14800/Oct/’04/30 BB SANYO Electric Co., Ltd. Printed in Japan...
  • Page 29 8. This circuit diagram covers a basic or representative chassis only. There S: Oxied metalized W: Wire wounding may be some components or partial circuit differences between the Rated wattage (1/2W) POSISTER SERVICE CP21KX2-50 C: Solid RESISTOR actual chassis and the circuit diagram. REF. NO. 12 X 10 =12K 9.
  • Page 30 CRT BOARD (Component Location) Waveforms & Voltages (On the Main Board) R713 Q701 IC001 (AUDIO AMP.) R719 (B-OUT) R711 L702 Q701A Pin-1 12.7V 5.9V 5.9V 6.8V 1.5V 1.5V 0.4V 5.9V 5.9V R712 IC201 (IF/VIDEO/CHROMA) Pin-1 2.3V 2.2V 2.5V 2.2V 2.9V 2.9V 5.0V 2.5V...

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