Sanyo CR21KX2 Service Manual

Colour television

Hide thumbs

Table Of Contents

Table of Contents

Quick Links

Download this manual

SERVICE MANUAL Colour Television

VIDEO

L-AUD IO-R

Specifications

Power Source . . . . . . . . . AC220-240V, 50Hz/60Hz.

Colour System . . . . . . . . PAL (AV input : PAL/NTSC4.43/NTSC/PAL-60Hz)

Television System . . . . . . B/G

Channel Coverage . . . . . VHF: E2-E12

UHF: 21-69

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 ✕ 1(436mVrms, less than 600Ω)

Sound Output (RMS) . . . . 5W + 5W

. . . . . . . . . 625 (W) ✕ 460.5 (H) ✕ 483.8(D)mm

Dimensions

Weight . . . . . . . . . . . . . . . approx. 21.5 Kg

Specifications subject to change without notice.

C4VE

TV/AV MENU

FILE NO.

Model No. CR21KX2

Service Ref. No. CR21KX2-00

TIMER

TV/AV

-/--

BASS

A B

SURROUND

CH SCAN

SWAP

PIC MODE

JXMYA

Product Code:111358204

Original Version

Chassis Series: AC5-A

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.

(Singapore)

5110396

Table of Contents

Summary of Contents for Sanyo CR21KX2

Page 1 FILE NO. SERVICE MANUAL Colour Television Model No. CR21KX2 (Singapore) Service Ref. No. CR21KX2-00 TIMER TV/AV -/-- BASS SURROUND CH SCAN SWAP TV/AV MENU MENU PIC MODE VIDEO L-AUD IO-R JXMYA Specifications Product Code:111358204 Power Source ..AC220-240V, 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 IC001 < Audio AMP.> AN5274 Volume Over Current Ripple Thermal Filter Protection Circuit 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.
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) INITIAL DATA ITEM DESCRIPTION DATA RANGE Switching of RF Pre-shoot and Over shoot. PORWN PORSN RF Pre-shoot/Over shoot Adj. 00~03 TINT -16~+15 RF Tint Adj. NTSC 4.43 Tint Adj. TINT 443 -16~+15 SHRF RF Sharpness Adj. -32~+31 TEXTC -128~+127...
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 01 [RF AGC] AGC Item 06 [V-LIN] VERTICAL LINEARITY 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. VERTICAL CENTRE B-VOLTAGE SUPPLY CHECKING (1) Receive the monochrome circular pattern. (1) Connect DC meter to TP-B and the ground. (2) Set the brightness and contrast to maximum. (2) Tune the receiver to an active channel and synchro- (3) Adjust the vertical centre of the picture with SW501.
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
610 299 3608 ASSY,BUTTON POWER-C4VY 610 293 3741 DEC IND 610 299 3615 ASSY,BUTTON UNITED-C4VY 610 294 5997 CABINET FRONT-C4VG 645 040 4672 BADGE,SANYO 645 041 7269 BADGE,SANYO 610 299 3714 DEC.SPEAKER-C4VY 610 299 9921 CABINET BACK-A-C4TG 610 303 0142 LABEL RATING-C4VE...
Page 18: Chassis Electrical Parts List
C4VE 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 C4VE Ref. No. Part No. Description Ref. No. Part No. Description 405 015 8704 TR 2SC2812-L6-TB 405 011 8500 TR 2SC1740S-R 405 015 8902 TR 2SC2812-L7-TB 405 011 8609 TR 2SC1740S-S Q174 405 014 4509 TR 2SC2412K T146 R 405 012 2002 TR 2SC1815-GR 405 014 4608 TR 2SC2412K T146 S...
Page 20 C4VE Ref. No. Part No. Description Ref. No. Part No. Description 409 265 4806 IC L78M05CV C224 403 305 3507 CERAMIC 0.1U Z 409 172 1509 IC MC78M05CT C225 403 049 0008 ELECT 1U M 409 320 5700 IC UPC78M05AHF C226 403 049 0008 ELECT...
Page 21 C4VE Ref. No. Part No. Description Ref. No. Part No. Description 404 073 3300 CERAMIC 470P M 250V R018 401 105 3307 MT-GLAZE 2.7K JA 1/16W 404 071 4507 CERAMIC 470P K 400V R019 401 012 3407 CARBON 10 JA 1/4W C631 403 247 5003...
Page 22 C4VE Ref. No. Part No. Description Ref. No. Part No. Description R222 401 105 0504 MT-GLAZE 1K JA 1/16W R617 401 012 5708 CARBON 1K JA 1/4W R223 401 105 0504 MT-GLAZE 1K JA 1/16W R619 401 016 1508 CARBON 22 JA 1/4W R224...
Page 23 C4VE Ref. No. Part No. Description Ref. No. Part No. Description R869 401 024 6700 CARBON 100 JA 1/6W 407 057 6304 ZENER DIODE RD7.5EB1 R870 401 105 2904 MT-GLAZE 22K JA 1/16W 407 151 8808 ZENER DIODE UZ-7.5BCA R871 401 105 0603 MT-GLAZE 10K JA 1/16W...
Page 24 C4VE Ref. No. Part No. Description Ref. No. Part No. Description 408 009 9008 DIODE BYD33D 645 027 7382 SWITCH,PUSH 1P-1TX1 D618 407 005 4505 DIODE DS442X SW1906 645 003 4701 SWITCH,PUSH 1P-1TX1 408 008 2406 DIODE 1N4148 645 019 4887 SWITCH,PUSH 1P-1TX1 407 012 4406 DIODE 1SS133...
Page 25 C4VE Ref. No. Part No. Description Ref. No. Part No. Description R723 401 105 7206 MT-GLAZE 82 JA 1/16W R724 401 065 4604 OXIDE-MT R725L 401 009 1508 CARBON 2.7K JA 1/2W R741 401 026 9600 CARBON 470 JA 1/6W R743 401 105 1105 MT-GLAZE...
Page 26 -26-...
Page 27 -27-...
Page 28 SANYO Electric Co., Ltd. A14800 /Sep./’02 /30 Printed in Japan...
Page 29 Rated wattage (1/2W) W: Wire wounding may be some components or partial circuit differences between the POSISTER SERVICE C: Solid CR21KX2-00 RESISTOR actual chassis and the circuit diagram. REF. NO. 12 X 10 =12K 9. Parts specified with "X" are not installed in this model.
Page 30 CRT BOARD (Component Location) Waveforms & Voltages (On the Main Board) IC201 (IF/VIDEO/CHROMA) (B-OUT) Pin-1 2.3V 2.2V 2.7V 3.2V 2.9V 2.9V 5.0V 2.5V 2.3V 4.3V 4.1V 4.3V 1.6V 1.7V 1.6V 8.3V 2.2V 2.1V 2.1V 2.0V 2.2V 2.7V 5.2V 2.6V 0.7V 1.3V 1.7V 0.9V...

Sanyo CR21KX2 Service Manual

Quick Links

Related Manuals for Sanyo CR21KX2

Summary of Contents for Sanyo CR21KX2

Table of Contents