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SERVICE MANUAL Colour Television
Specifications
Power Source . . . . . . . . . AC220V, 50Hz / 60Hz
Receiving System . . . . . . PAL (M/M, N/N), NTSC (M/M)
Channel Coverage
Antenna mode VHF: CH02-CH13, UHF: CH14-CH69
CATV mode
VHF band: CH01-CH13, Mid band: CH14-CH22
Super band: CH23-CH36, Hyper band: CH37-CH64
Ultra band: CH65-CH94 and CH100-CH125
Low mid band: CH95-CH99
Aerial Input Impedance . . 75
Input Terminals
AV1 (Video): Phono jack ✕ 1
AV1 (Audio): Phono jack (R/L) ✕ 1 set
AV2 (Video): Phono jack ✕ 1
AV2 (Audio): Phono jack (R/L) ✕ 1 set
Output Terminals
Video Monitor Output: Phono jack ✕ 1
Audio Monitor Output: Phono jack (R/L) ✕ 1
Headphone Jack: Mini stereo jack ✕ 1
Sound Output (RMS) . . . . 3W + 3W
Speakers . . . . . . . . . . . 5cm x 9cm x 2 pcs.
Dimensions . . . . . . . . . 596(W) X 493(H) X462(D) mm
Weight . . . . . . . . . . . . . approx. 22 Kg
Specifications subject to change without notice.
BC2E
FILE NO.
Model No. C21LF41
Service Ref. No. C21LF41-00
JXMRR
Product Code: 13007604
13007605
Original Version
Chassis Series: LA6-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 trans-
mission system and power source differ from
the design specifications. Refer to the speci-
fication table.
C21LF41B
(Argentina)
C21LF41B-00
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Related Manuals for Sanyo C21LF41
Summary of Contents for Sanyo C21LF41
- Page 1 FILE NO. SERVICE MANUAL Colour Television Model No. C21LF41 C21LF41B (Argentina) Service Ref. No. C21LF41-00 C21LF41B-00 JXMRR Specifications Product Code: 13007604 Power Source ..AC220V, 50Hz / 60Hz 13007605 Receiving System ..PAL (M/M, N/N), NTSC (M/M)
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Page 2: Service Adjustments
Service Adjustments General This set has an On-screen Service Menu system included in the CPU that allows remote operation for most of the service adjustments. IC802 (EEPROM) Replacement When IC802 (EEPROM) is replaced, IC801 (CPU) will automatically write the initial reference data into IC802 for basic TV operation. However, the bus data should be checked and some bus data should be set up before attempting the service adjustments. - Page 3 Service Adjustments On-screen Service Menu Following table shows the initial values which have been stored in the CPU ROM, and items for the service adjustments. When IC802 (EEPROM) is replaced, check the bus data to confirm they are the same as below. The shaded menu should be checked and be set up or readjusted according to the procedures described in the following pages.
- Page 4 Service Adjustments Item Initial value Range Description BLKG 00~03 Blk.STR.gain BRTA 00~01 Brt. Abl. Def BRST 00~01 Mid. Stp. Def BRTH 00~07 Bright. Abl. Threshold 00~03 WPL Ope. Point (W/ Defeat) YGAM 00~03 Y Gamma Start PRES 00~03 AV Mode Pre Shoot adj OVERS 00~03 AV Mode Over Shoot adj RFCO...
- Page 5 Service Adjustments Item Initial value Range Description HL-TON HALF TONE LEVEL 77 AVNCON 00~127 AV CONTRAST(No Signal in AV) AVNBRI 00~127 BRIGHT (No Signal in AV) POMT 00~127 Power Mute Time CHMT 00~31 CH Mute Time SYST 00~255 System N RELAY 00~255 Power relay on time(8msec) 1~63...
- Page 6 Service Adjustments Important Notice: Do not attempt to adjust service adjustments not listed on below otherwise it may cause loss of performance and for correct operation. Item 01 [RFAGC] AGC Item 04 [V-SIZ] VERTICAL SIZE NOTE: Do not attempt this adjustment with weak signal. 1.
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Page 7: Main Board
Service Adjustments Items 16-23 GREY SCALE (1) Receive a 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-16 RBIAS, 17 GBIAS, 18 BBIAS mode to 00. Set each value of Item-19 RDRIV, 21 BDRIV mode to 63, 20 GDRIV to 07. - Page 8 Service Adjustments Service Adjustment-2 (MTS Adjustment) 1. Enter the Service Menu While pressing the MENU button on the televi- sion, press the Number Key 3 on the remote control unit. The Service Menu now appear. INPUT LEVEL HI SEPARATION ME NU LOW SEPARATION ADJUST: - /+ CHOOSE: ▲▼...
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Page 9: Stereo Separation Adjustment
Service Adjustments SOUND LEVEL ADJUSTMENT 1. Connect a signal to the antenna terminal with audio signal of 1KHz at 100% modulated. 2. Connect a DC Volt-Meter to TP-317 ( pin-38 of IC3401) and the ground. 3. Switch the TV set on, and set the Surround OFF. Press and hold the MENU button on the TV set, and press “3”... -
Page 10: Fine Tuning
Service Adjustments 6. Select “HI SEPARATION” by pressing the CHANNEL UP/DOWN button on the remote control or TV set. INPUT LEVEL HI SEPARATION LOW SEPARATION ADJUST: - /+ CHOOSE: ▲▼ EXIT : MENU Minimum leakage TP-318 (L) 7. Adjust the level of 4KHz at TP-318 (pin-39 of IC3401) to become minimum level by pressing the VOLUME (+/-) button on the remote control or TV set. -
Page 11: Focus Adjustment
Service Adjustments Service Adjustment-4 Protection Circuit This TV set has a built-in power supply protection circuit. FOCUS ADJUSTMENT It is provided to protect the TV set in case of a power supply circuit malfunctions. When something abnormality 1. Receive the monochrome circular pattern. occurs during TV reception, the TV set goes to the stand- 2. -
Page 12: 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.