Service Manual
Page 1
... PRECAUTION 2 » LOCATION OF USER'S CONTROL ...4 » INSTALLATION AND SERVICE INSTRUCTIONS 5 » SERVICE MODE ...6 » ADJUSTMENT METHOD ...12 » WAVEFORMS ...25 » CHASSIS LAYOUT ...26 » BLOCK DIAGRAM ...27 » DESCRIPTION OF...only parts identical to change without notice. SHARP CORPORATION This document has been published to change without prior notice. The contents are subject to be used for after sales service only. 21FL94 SERVICE MANUAL S64T921FL94// COLOR TELEVISION Chassis No. GA-4 MODEL 21FL94 In the interests of user-safety (...
... PRECAUTION 2 » LOCATION OF USER'S CONTROL ...4 » INSTALLATION AND SERVICE INSTRUCTIONS 5 » SERVICE MODE ...6 » ADJUSTMENT METHOD ...12 » WAVEFORMS ...25 » CHASSIS LAYOUT ...26 » BLOCK DIAGRAM ...27 » DESCRIPTION OF...only parts identical to change without notice. SHARP CORPORATION This document has been published to change without prior notice. The contents are subject to be used for after sales service only. 21FL94 SERVICE MANUAL S64T921FL94// COLOR TELEVISION Chassis No. GA-4 MODEL 21FL94 In the interests of user-safety (...
Service Manual
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...the customer. electrical components having such features are identified by using replacement components replacement parts shown in this service manual, may rated for the purpose of completing these special safety characteristics are identified in this test). •...knobs, insulating materials, cabinet backs, adjustment and compartment covers or shields, isolation resistor-capacity networks, mechanical insulators, etc. 3. 21FL94 IMPORTANT SERVICE SAFETY PRECAUTION (Continued) BEFORE RETURNING THE RECEIVER (Fire & Shock Hazard) Before returning the receiver to the chassis (antenna, ...
...the customer. electrical components having such features are identified by using replacement components replacement parts shown in this service manual, may rated for the purpose of completing these special safety characteristics are identified in this test). •...knobs, insulating materials, cabinet backs, adjustment and compartment covers or shields, isolation resistor-capacity networks, mechanical insulators, etc. 3. 21FL94 IMPORTANT SERVICE SAFETY PRECAUTION (Continued) BEFORE RETURNING THE RECEIVER (Fire & Shock Hazard) Before returning the receiver to the chassis (antenna, ...
Service Manual
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21FL94 18 ADJUSTMENT ITEM ADJUSTMENT POSITION V21 H-VCO STEP RANGE 0-7 CONTROL I2C CONTROL PRE-ADJUST REQUIREMENT OPTION SET UP, BUS SET UP CONTENT NO SIGNAL (RASTER) CONDITION INPUT CONDITION AC 220V OUTPUT IC 801 PIN 11 (MANUAL ADJ) 1) GO TO SERVICE MODE, 2) GO TO SERVICE DATA V21, ADJ ...NO SIGNAL (RASTER) CONDITION INPUT CONDITION AC 220V OUTPUT CONFIRMATION ON CRT DISPLAY (AUTO), IC801 PIN 2 VOLTAGE (MANUAL). (AT SELF ADJUSTMENT MODE) 1) GO INTO SERVICE MODE, BY SELECTING THE SERVICE DATA V10 2) PRESS THE R/C FOR AUTO PIF-VCO KEY, OSD APPEAR "OK" AT SCREEN 3) IF APPEAR...
21FL94 18 ADJUSTMENT ITEM ADJUSTMENT POSITION V21 H-VCO STEP RANGE 0-7 CONTROL I2C CONTROL PRE-ADJUST REQUIREMENT OPTION SET UP, BUS SET UP CONTENT NO SIGNAL (RASTER) CONDITION INPUT CONDITION AC 220V OUTPUT IC 801 PIN 11 (MANUAL ADJ) 1) GO TO SERVICE MODE, 2) GO TO SERVICE DATA V21, ADJ ...NO SIGNAL (RASTER) CONDITION INPUT CONDITION AC 220V OUTPUT CONFIRMATION ON CRT DISPLAY (AUTO), IC801 PIN 2 VOLTAGE (MANUAL). (AT SELF ADJUSTMENT MODE) 1) GO INTO SERVICE MODE, BY SELECTING THE SERVICE DATA V10 2) PRESS THE R/C FOR AUTO PIF-VCO KEY, OSD APPEAR "OK" AT SCREEN 3) IF APPEAR...
Service Manual
Page 19
IF APPEAR NG PLS REPEAT STEP 2 AGAIN. ADJUSTMENT PROCEDURE (AT MANUAL ADJUSTMENT MODE) 1. CHANGE THE ANTENNA INPUT SIGNAL TO 63-67 dBµ...DISAPPEAR AND USE R/C TO SET V19 TO "0", NEXT DISABLE THE YMUTE SO THAT PICTURE APPEAR IN NORMAL MODE. 21FL94 19 [VOLTAGE CONFIRMATION] MAX - 0.1V dc HISTORY SYMBOL REVISED CONTENT, OF REVISION 19-1 [VOLTAGE CONFIRMATION] HISTORY SYMBOL... (FIX) TUNER AGC TERMINAL (TP 201) OR CRT DISPLAY CONFIRMATION (AT SELF ADJUSTMENT MODE) 1. GO TO SERVICE MODE 2. ADJUST THE V08 BUS DATA UNTIL AGC TERMINAL VOLTAGE BE- CHANGE THE ANTENNA INPUT SIGNAL TO 90-95 ...
IF APPEAR NG PLS REPEAT STEP 2 AGAIN. ADJUSTMENT PROCEDURE (AT MANUAL ADJUSTMENT MODE) 1. CHANGE THE ANTENNA INPUT SIGNAL TO 63-67 dBµ...DISAPPEAR AND USE R/C TO SET V19 TO "0", NEXT DISABLE THE YMUTE SO THAT PICTURE APPEAR IN NORMAL MODE. 21FL94 19 [VOLTAGE CONFIRMATION] MAX - 0.1V dc HISTORY SYMBOL REVISED CONTENT, OF REVISION 19-1 [VOLTAGE CONFIRMATION] HISTORY SYMBOL... (FIX) TUNER AGC TERMINAL (TP 201) OR CRT DISPLAY CONFIRMATION (AT SELF ADJUSTMENT MODE) 1. GO TO SERVICE MODE 2. ADJUST THE V08 BUS DATA UNTIL AGC TERMINAL VOLTAGE BE- CHANGE THE ANTENNA INPUT SIGNAL TO 90-95 ...
Service Manual
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...REPLACEMENT Replacement parts which does not have the same safety characteristics as the factory recommended replacement parts shown in this manual; D392 RH-DX0452CEZZ X DX0452CE D502 RH-EX0652GEZZY X Zener, EX0652GE AB 1. PART NO. 2. NO. 4. ...D201 RH-EX0676GEZZY X Zener, EX0676GE AB To have these special safety characteristics are identified by "å" in this service manual may create shock, fire or other hazards. CRT Unit PWB-C DUNTKC574WEA0 - D602 VHD1SS244//-1Y X 1SS244 AB ...features are identified in the Replacement Parts Lists. 21FL94 RReEf. No. NPo.
...REPLACEMENT Replacement parts which does not have the same safety characteristics as the factory recommended replacement parts shown in this manual; D392 RH-DX0452CEZZ X DX0452CE D502 RH-EX0652GEZZY X Zener, EX0652GE AB 1. PART NO. 2. NO. 4. ...D201 RH-EX0676GEZZY X Zener, EX0676GE AB To have these special safety characteristics are identified by "å" in this service manual may create shock, fire or other hazards. CRT Unit PWB-C DUNTKC574WEA0 - D602 VHD1SS244//-1Y X 1SS244 AB ...features are identified in the Replacement Parts Lists. 21FL94 RReEf. No. NPo.