Sharp 21FL94 Service Manual
Sharp 21FL94 Manual
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- Sharp 21FL94 | Service Manual - Page 1
21FL94 SERVICE MANUAL S64T921FL94// COLOR TELEVISION Chassis No. GA-4 MODEL 21FL94 SERVICE SAFETY PRECAUTION 2 » LOCATION OF USER'S CONTROL ...4 » INSTALLATION AND SERVICE INSTRUCTIONS 5 » SERVICE . SHARP CORPORATION This document has been published to be used for after sales service only - Sharp 21FL94 | Service Manual - Page 2
all service personnel are aware of the procedures and instructions covering X-radiation. The only potential source of X-ray in current solid state TV there is no possibility of an X-radiation problem. Every time a color chassis is serviced, the brightness should be tested while monitoring the - Sharp 21FL94 | Service Manual - Page 3
21FL94 IMPORTANT SERVICE SAFETY PRECAUTION (Continued) BEFORE RETURNING THE RECEIVER (Fire & Shock Hazard) factory recommended necessarily increased by using replacement components replacement parts shown in this service manual, may rated for higher voltage, wattage, etc. create shock, fire, - Sharp 21FL94 | Service Manual - Page 4
21FL94 LOCATION OF USER'S CONTROL 4 - Sharp 21FL94 | Service Manual - Page 5
21FL94 Note: INSTALLATION AND SERVICE INSTRUCTIONS (1) When performing any adjustments to resistor controls and transformers use non-metallic screwdrivers or TV alignment tools. (2) Before performing adjustments, the TV set must be on at least 15 minutes. CIRCUIT PROTECTION The receiver is - Sharp 21FL94 | Service Manual - Page 6
21FL94 SERVICE MODE Service Mode Overview 1. Service mode is entered by SERVICE key input or CH-UP +VOL-DOWN input during reset. 2. Service mode is cleared by entering SERVICE key command during service mode. 3. If key input port (SERVICE) input is LOW, then it is in service mode. 4. During key - Sharp 21FL94 | Service Manual - Page 7
Adjustment Mode Items No. Item Name V01 SUB-PICTURE V02 SUB-TINT V03 SUB-COLOR V04 SUB-BRIGHT V05 SUB-SHARP V06 V-SHIFT V07 H-SHIFT V08 RF-AGC V09 V-SIZE V10 PIF-VCO V11 R-CUTOFF V12 G-CUTOFF V13 B-CUTOFF V14 16 127 32 32 127 127 127 64 64 64 64 32 0 127 4 10 32 28 27 32 63 21FL94 7 - Sharp 21FL94 | Service Manual - Page 8
21FL94 Ë SELF ADJUSTMENT H-VCO 1. When there is H-VCO self-adjustment key input for 125 inside 8ms interval. 6. When adjustment completed, OSD display and H-VCO self-adjustment status data of EEPROM are updated. 7. H-FREE(1chip), intelligent monitor output and IM input mode are recovered. RF-AGC - Sharp 21FL94 | Service Manual - Page 9
RGB-CLIP F12 E-SAVE F13 FAO-VOL F14 PIF-G F15 Y-DELAY(TV) F16 Y-DELAY(AV) F17 Y-DELAY(SAV) F18 Y-DELAY(YUV) 0~3 0~3 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 9 Default 0 0 0 0 0 0 0 0 0 0 0 30 120 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 21FL94 - Sharp 21FL94 | Service Manual - Page 10
21FL94 Setting Mode Items (Continued) No. Item Name F55 PSW F56 FAO-VOL F57 CP F58 CC LEVEL F59 OSD POS F60 OFFSET-ADJ-COL F61 - Sharp 21FL94 | Service Manual - Page 11
21FL94 Option Mode Items No OPTION FUNCTION 001 DEMO 002 DOWNLOAD 003 V-CHIP 004 SPEAKER 005 FAO 006 P.PREF 007 UNIV+ 008 VIEW TIMER 009 EZ- - Sharp 21FL94 | Service Manual - Page 12
V08 V09 V10 V11 V12 V13 V14 V15 V16 V17 V18 V19 V20 V21 M01 M02 M03 M04 M05 M06 Service Mode SUB-PICTURE SUB-TINT SUB-COLOR SUB-BRIGHT SUB-SHARP V-SHIFT H-SHIFT RF-AGC V-SIZE PIF-VCO R-CUTOFF G-CUTOFF B-CUTOFF R-DRIVE B-DRIVE SUB-COLOR(YUV) SUB-TINT(YUV) CC-POS - Sharp 21FL94 | Service Manual - Page 13
F47 F48 F49 F50 F51 F52 F53 F54 F55 F56 Service Mode VIDEO TONE -GAIN (TV) VIDEO TONE -GAIN (AV) VIDEO TONE -GAIN 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0~63 Default Data 0 0 0 0 0 0 0 0 0 0 0 30 120 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 60 13 21FL94 - Sharp 21FL94 | Service Manual - Page 14
21FL94 Second Stage (Continued) Data F57 F58 F59 F60 F61 F62 F63 F64 F65 F66 F67 F68 F69 F70 Service Mode CP CC LEVEL OSD POS OFFSET-ADJ-COL OFFSET-ADJ-TINT OFFSET-ADJ-TINT-YUV TIMER4-LOW SPEED TIMER4-HIGH SPEED R-CUT-YUV G-CUT- - Sharp 21FL94 | Service Manual - Page 15
AS BELOW DATA SETUP FOR FIRST AND SECOND STAGE SERVICE DATA FUNCTION V05 F15 F16 F19 F21 F23 F24 F25 F26 F27 F28 SHARP Y-DL(TV) Y-DL(AV) TINT-AV COL-AV R-D(R2) R-D(R) R-D(B) B-D(R2) B-D(R) B-D(B) 21FL94 50 5 2 -7 4 +8 +3 -2 -18 -8 +6 21FL94 15 ADJUSTMENT PROCEDURE DEF "0"=DISABLE "1"=ENABLE 009 - Sharp 21FL94 | Service Manual - Page 16
21FL94 16 ADJUSTMENT ITEM ADJUSTMENT POSITION V07 H-POSITION STEP RANGE CONTROL I2C BUS THE V09 BUS DATA UNTILL THE OVERSCAN BECOME AS SPECIFIED BELOW. CAUTION: - PLEASE AGING TV MORE THAN 10 MINUTES BEFORE ADJUSTMENT. A B ADJUSTMENT PROCEDURE ADJUSTMENT PROCEDURE [CHECKING SPEC] LEFT - Sharp 21FL94 | Service Manual - Page 17
TEXT WILL BE APPEARED. 2) ADJUST THE V18 BUS DATA TO HAVE A BALANCE POSITION TO SPEC OF A=B. ADJUSTMENT PROCEDURE TEXT BOX BLK A B 21FL94 17 [CHECKING CONFIRMATION] HISTORY SYMBOL REVISED CONTENT, OF REVISION 17-1 [CHECKING SPEC] LEFT AND RIGHT SYMMETRICAL HISTORY SYMBOL REVISED CONTENT, OF - Sharp 21FL94 | Service Manual - Page 18
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 - Sharp 21FL94 | Service Manual - Page 19
SERVICE DATA V08, PRESS R/C TO OPEARATE AUTO-AGC KEY AND CONFIRM THE OK DISPLAY ON THE SCREEN. 3. IF APPEAR NG PLS REPEAT STEP 2 AGAIN. ADJUSTMENT PROCEDURE (AT MANUAL DISABLE THE YMUTE SO THAT PICTURE APPEAR IN NORMAL MODE. 21FL94 19 [VOLTAGE CONFIRMATION] MAX - 0.1V dc HISTORY SYMBOL REVISED - Sharp 21FL94 | Service Manual - Page 20
21FL94 20 ADJUSTMENT ITEM ADJUSTMENT POSITION V14,V15,V11,V12,V13 WHITE BALANCE POINT AT BLACK POSITION, IF THE VALUE SHIFTED AWAY FROM THE DATA ADJUSTED IN STEP 1), ADJUST AGAIN THE TWO SERVICE DATA WHICH HAVE CHOSEN AT SCREEN ADJUST SO THAT TO OBTAIN THE SIMILAR AXIS AS ABOVE. *WARNING: DO NOT - Sharp 21FL94 | Service Manual - Page 21
GET A WAVEFORM AS BELOW. 3) DISABLE THE Y-MUTE **PLS TAKE NOTE THAT SERVICE MODE DATA F61 NEED TO SET +8 ADJUSTMENT PROCEDURE WHITE US14 ADJUSTMENT PROCEDURE B-AMP BASE (TP853) MUST BE IN STEPPING LEVEL 21FL94 21 [VOLTAGER CONFIRMATION] BRIGHTNESS Y=150 cd/m2 HISTORY SYMBOL - Sharp 21FL94 | Service Manual - Page 22
21FL94 22 ADJUSTMENT ITEM ADJUSTMENT POSITION V03 SUB-COLOR STEP RANGE 0-127 CONTROL SHOWS THAT THE 75% WHITE & RED PORTIONS OF COLOR BAR BEAT AT THE SAME LEVEL *PLEASE TAKE NOTE THAT SERVICE DATA F60 MUST SET TO +10 Cy G ADJUSTMENT PROCEDURE 100% WHITE WY Mg R B [CHECKING CONFIRMATION] - Sharp 21FL94 | Service Manual - Page 23
SOUND VOLUME CONTROL MORE THAN 1. 2) ADJUST BUS DATA OF M01 UNTIL THE VOLTAGE OF 39 PIN BE- COME AS SPECIFIED BELOW. ADJUSTMENT PROCEDURE 21FL94 23 [CAUTION POINT] USE ELECTROSTATIC HI-VOLTAGE METER AND FOLLOW THE UL/ DHHS STANDARD TO MAKE CORRECTION AND CONTROL. HISTORY SYMBOL REVISED CONTENT - Sharp 21FL94 | Service Manual - Page 24
21FL94 24 ADJUSTMENT ITEM ADJUSTMENT POSITION M04, M05 SEPARTION ADJUSTMENT STEP RANGE 0~63 CONTROL I2C BUS CONTROL PRE-ADJUST REQUIREMENT CONTENT INPUT CONDITION OPTION SET UP, - Sharp 21FL94 | Service Manual - Page 25
WAVEFORMS 21FL94 25 - Sharp 21FL94 | Service Manual - Page 26
21FL94 CHASSIS LAYOUT H G F E D C B A 1 2 3 4 5 6 26 - Sharp 21FL94 | Service Manual - Page 27
CRT BLOCK DIAGRAM H 21FL94 G F E D C B A 1 2 3 4 5 6 27 - Sharp 21FL94 | Service Manual - Page 28
21FL94 MAIN BLOCK DIAGRAM J I H G F E D C B A 1 2 3 4 5 6 7 8 9 10 28 - Sharp 21FL94 | Service Manual - Page 29
21FL94 10 11 12 13 14 15 16 17 18 19 29 - Sharp 21FL94 | Service Manual - Page 30
21FL94 MTS BLOCK DIAGRAM J I H G F E D C B A 1 2 3 4 5 6 7 8 9 10 30 - Sharp 21FL94 | Service Manual - Page 31
21FL94 DESCRIPTION OF SCHEMATIC DIAGRAM NOTES: 1. The unit of resistance "ohm" is omitted. (K=kΩ=1000Ω, M=MΩ) 2. All resistors are 1/16 watt, unless otherwise noted. 3. All capacitors are µF, unless - Sharp 21FL94 | Service Manual - Page 32
21FL94 SCHEMATIC DIAGRAM: MAIN Unit J I H G F E D C B A 1 2 3 4 5 6 7 8 9 10 32 - Sharp 21FL94 | Service Manual - Page 33
21FL94 10 11 12 13 14 15 16 17 18 19 33 - Sharp 21FL94 | Service Manual - Page 34
21FL94 SCHEMATIC DIAGRAM: CRT Unit H G F E D C B A 1 2 3 4 5 6 34 - Sharp 21FL94 | Service Manual - Page 35
21FL94 SCHEMATIC DIAGRAM: MTS Unit H G F E D C B A 1 2 3 4 5 6 35 - Sharp 21FL94 | Service Manual - Page 36
21FL94 PRINTED WIRING BOARD ASSEMBLIES H G F E D C B PWB-A: MAIN Unit (Wiring Side) A 1 2 3 4 5 6 36 - Sharp 21FL94 | Service Manual - Page 37
21FL94 H G Z1 A1 F E D C F DC2 Z3 B A 1 RJ 1 4 RJ 1 5 RJ 1 7 RJ 8 R6 2 6 RJ 1 6 R1 0 2 7 R1 0 2 4 C1 0 1 6 RJ 3 1 RJ 3 2 R1 0 0 9 R1 0 0 8 R1 0 0 6 R1 0 0 7 R1 0 0 3 R1 0 0 2 C3 1 3 R3 1 5 R3 1 4 R3 0 5 - Sharp 21FL94 | Service Manual - Page 38
21FL94 H G F E D C PWB-B: CRT Unit (Wiring Side) B A 1 2 3 4 5 6 38 - Sharp 21FL94 | Service Manual - Page 39
21FL94 H G F E PWB-C: MTS Unit (Wiring Side) D C B R3 0 3 3 R3 0 0 8 C3 0 1 3 R3 0 0 7 R3 0 3 6 R3 0 3 5 R3 0 2 8 R3 0 3 0 Q3 0 0 1 Q3 0 0 4 R3 0 2 9 R3 0 3 4 R3 0 2 7 R3 0 2 6 R3 0 2 1 R3 0 1 8 R3 0 1 6 R3 0 3 1 R3 0 3 2 R3 0 8 5 - Sharp 21FL94 | Service Manual - Page 40
21FL94 RReEf. NPo. LACPaErt NMo. EN5T PARTS Description LISCoTde PARTS REPLACEMENT Replacement parts which have these special safety characteristics are identified in this manual as the factory recommended replacement parts shown in this service manual may create shock, fire or other hazards. Ref. - Sharp 21FL94 | Service Manual - Page 41
21FL94 Ref. No. Part No. 5 Description Code L802 VP-DF100K0000Y X Peaking, 10µH AB L803 VP-DF100K0000Y X Peaking, 10µH AB L804 VP-XF150K0000Y X Peaking, 15µH AB L806 - Sharp 21FL94 | Service Manual - Page 42
21FL94 Ref. No. Part No. 5 Description Code C1849 VCFYFA1HA223J+ X 0.022 50V AA C1855 VCKYCY1HB561KY X 560p 50V Ceramic AA C1856 VCKYCY1HB102KY X 1000p 50V Ceramic AA C1861 VCCCCY1HH221JY X - Sharp 21FL94 | Service Manual - Page 43
21FL94 Ref. No. Part No. 5 Description Code R1007 VRS-CY1JF103JY X 10k 1/16W Metal Oxide AA R1008 VRS-CY1JF183JY X 18k 1/16W Metal Oxide AA R1009 VRS-CY1JF103JY X - Sharp 21FL94 | Service Manual - Page 44
21FL94 Ref. No. Part No. 5 Description DUNTKC574WEA0 PWB-C MTS UNIT Code PWB-C MTS UNIT INTEGRATED CIRCUIT IC3001 VHiCXA2194Q-1Y X CXA2194Q AP TRANSISTORS Q3001 VS2SD601AR/-1Y X 2SD601AR - Sharp 21FL94 | Service Manual - Page 45
21FL94 Ref. No. Part No. 5 Description MISCELLANEOUS X Infrared R-C AT TiNS-B246WJZZ X Operation Manual PACKING PARTS (NOT REPLACEMENT ITEM) SPAKCB318WJZZ - Ass'y 1-1 Not Avairable - Front Cabinet - 1-2 HBDGB3155CESA X SHARP Badge AD 1-3 HDECQA403WJSA X LED, R/C Cover 1-4 JBTN- - Sharp 21FL94 | Service Manual - Page 46
21FL94 Ref. No. Part No. 5 Description PACKING OF THE SET Code Ref. No. Part No. 5 Description Code 46 - Sharp 21FL94 | Service Manual - Page 47
Ref. No. Part No. 5 Description Code Ref. No. - M E M O - Part No. 5 Description 21FL94 Code 47 - Sharp 21FL94 | Service Manual - Page 48
21FL94 Ref. No. Part No. 5 Description Code Ref. No. Part No. 5 Description Code COPYRIGHT © 2004 BY SHARP CORPORATION ALL RIGHTS RESERVED. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
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21FL94
SHARP CORPORATION
This document has been published to be used for after
sales service only.
The contents are subject to change without notice.
In the interests of user-safety (Required by safety regulations in some countries ) the set should be restored to its
original condition and only parts identical to those specified should be used.
COLOR TELEVISION
Chassis No. GA-4
Page
»
ELECTRICAL SPECIFICATIONS
.........................................................................................................
1
»
IMPORTANT SERVICE 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 SCHEMATIC DIAGRAM
......................................................................................
31
»
SCHEMATIC DIAGRAMS
...................................................................................................................
32
»
PRINTED WIRING BOARD ASSEMBLIES
........................................................................................
36
»
REPLACEMENT PARTS LIST
............................................................................................................
40
»
PACKING OF THE SET
......................................................................................................................
46
CONTENTS
SPEAKER
SIZE
...................................................................
12 x 5 cm, 2pcs
VOICE COIL IMPEDANCE
.............................
16 ohm at 400 Hz
ANTENNA INPUT IMPEDANCE
VHF/UHF
.....................................................
75 ohm Unbalanced
TUNING RANGES
VHF-Channels
...............................................................
2 thru 13
UHF-Channels
............................................................
14 thru 69
CATV Channels
...........................................................
1 thru 125
(EIA, Channel Plan U.S.A.)
POWER INPUT
.......................................
AC 110~220 V, 50/60 Hz
POWER RATING
....................................................................
90W
PICTURE SIZE
..........................................
1,239 cm
2
(192sq inch)
CONVERGENCE
.............................................................
Magnetic
SWEEP DEFLECTION
....................................................
Magnetic
FOCUS
..................................................
QFP/UNI-B1 Electrostatic
INTERMEDIATE FREQUENCIES
Picture IF Carrier Frequency
.....................................
45.75 MHz
Sound IF Carrier Frequency
......................................
41.25 MHz
Color Sub-Carrier Frequency
....................................
42.17 MHz
(Nominal)
AUDIO POWER
OUTPUT RATING
........................................
4.0 W(RMS) x 2pcs
Specifications are subject to change without
prior notice.
ELECTRICAL SPECIFICATIONS
MODEL
SERVICE MANUAL
21FL94
S64T921FL94//