Sharp 21FL91 Service Manual

21FL91SHARP CORPORATIONThis document has been published to be used for aftersales service only.The contents are subject to change without notice.In th

1021FL91Option Mode ItemsCheck ModeMicron mask version, software version and ROM correction function status are displayed in check mode.No ITEM 0 1 DE

1121FL91ADJUSTMENT METHODCaution: to get into the service mode, one of the ways is press direct key for service items. the other waysis short the main

1221FL91Data Service Mode Function Range Default DataF01 VIDEO TONE -GAIN (TV) V-TONE 0/1 0F02 VIDEO TONE -GAIN (AV V-TONE 0/1 0F03 VIDEO TONE -GAIN(Y

1321FL91Third Stage***POWER ON BY CH-UP/CH-DOWN KEYData Service Mode DATA="0" DATA="1" Default Data001 DEMO DEMO DISABLE ON 1002 D

1414-114-221FL91ADJUSTMENTITEMADJUSTMENTPOSITIONCONTROLPRE-ADJUSTREQUIREMENTCONTENTINPUTCONDITIONOUTPUTADJUSTMENTPROCEDUREBUS OPTION FOR THIRD STAGE S

1521FL9115-115-2ADJUSTMENTITEMADJUSTMENTPOSITIONCONTROLPRE-ADJUSTREQUIREMENTCONTENTINPUTCONDITIONOUTPUTADJUSTMENTPROCEDUREH-POSITIONV07 STEP RANGE 0-3

1616-116-221FL91ADJUSTMENTITEMADJUSTMENTPOSITIONCONTROLPRE-ADJUSTREQUIREMENTCONTENTINPUTCONDITIONOUTPUTADJUSTMENTPROCEDUREV-PHASEV06 STEP RANGE 0-7I2C

1721FL9117-117-2H-VCOV21 STEP RANGE 0-7I2C CONTROLOPTION SET UP, BUS SET UPNO SIGNAL (RASTER) CONDITIONAC 220VIC 801 PIN 11(MANUAL ADJ)1) GO TO SERVI

1818-118-221FL91ADJUSTMENTITEMADJUSTMENTPOSITIONCONTROLPRE-ADJUSTREQUIREMENTCONTENTINPUTCONDITIONOUTPUTADJUSTMENTPROCEDURERF-AGCV08 STEP RANGE 0-127I2

1921FL9119-119-2ADJUSTMENTITEMADJUSTMENTPOSITIONCONTROLPRE-ADJUSTREQUIREMENTCONTENTINPUTCONDITIONOUTPUTADJUSTMENTPROCEDUREWHITE BALANCEV14,V15,V11,V12

221FL91IMPORTANT SERVICE SAFETY PRECAUTIONËService work should be performed only by qualified service technicians who arethoroughly familiar with all

2020-120-221FL91ADJUSTMENTITEMADJUSTMENTPOSITIONCONTROLPRE-ADJUSTREQUIREMENTCONTENTINPUTCONDITIONOUTPUTADJUSTMENTPROCEDURESUB-PICTUREV01 STEP RANGE 0-

2121FL9121-121-2ADJUSTMENTITEMADJUSTMENTPOSITIONCONTROLPRE-ADJUSTREQUIREMENTCONTENTINPUTCONDITIONOUTPUTADJUSTMENTPROCEDURESUB-COLORV03 STEP RANGE 0-12

2222-122-221FL91HIGH VOLTAGE– STEP RANGE ––AFTER ALL ADJUSTMENT FINISHED.US 4 CH LION HEAD (MONOSCOPE PATTERN)AC 220V, RF INPUTCRT ANODE VOLTAGESET TH

2321FL9123-123-2ADJUSTMENTITEMADJUSTMENTPOSITIONCONTROLPRE-ADJUSTREQUIREMENTCONTENTINPUTCONDITIONOUTPUTADJUSTMENTPROCEDURE1) CONNECT 100 µ F ELECTROLL

2424-124-221FL911) INPUT SIGNAL 1, ADJUST BUS DATA OF M04 UNTIL THE ACVOLTAGE OF 39 PIN BECOME MINIMUM LEVEL.2) INPUT SIGNAL 2, ADJUST BUS DATA OF M05

21FL9125- M E M O -

2621FL91654321ABCDEFGHCHASSIS LAYOUT

2721FL91654321ABCDEFGHCRT BLOCK DIAGRAM

21FL91 21FL911234567891011 12 13 14 15 16 17 18 19 20ABCDEFGHIJMAIN BLOCK DIAGRAM28~29

21FL91 21FL9130~31MTS BLOCK DIAGRAM1234567891011 12 13 14 15 16 17 18 19 20ABCDEFGHIJ

321FL91SAFETY NOTICEMany electrical and mechanical parts in televisionreceivers have special safety-related characteristics.These characteristics are

3221FL91DESCRIPTION OF SCHEMATIC DIAGRAMNOTES:1. The unit of resistance "ohm" is omitted.(K=kΩ=1000Ω, M=MΩ)2. All resistors are 1/16 watt

3321FL91654321ABCDEFGHSCHEMATIC DIAGRAM: CRT Unit

21FL91 21FL9134~35 SCHEMATIC DIAGRAM: MAIN Unit1234567891011 12 13 14 15 16 17 18 19 20ABCDEFGHIJ

21FL91 21FL91SCHEMATIC DIAGRAM: MTS MODULE Unit36~371234567891011 12 13 14 15 16 17 18 19 20ABCDEFGHIJ

3821FL91654321ABCDEFGHPRINTED WIRING BOARD ASSEMBLIESPWB-A: MAIN Unit (Wiring Side)

3921FL91654321ABCDEFGHFDC1B1R65 4R617R618RJ5 2R61 3RJ3 4RJ5 1R62 0R619R45 8R461R36 2R36 3R364R365RJ6 1R462RJ6 4R43 3R435C1861C1862R1861C1863R43 4R1862

4021FL91654321ABCDEFGHPWB-B: CRT Unit (Wiring Side)

4121FL91654321ABCDEFGHPWB-E: MTS MODULE Unit (Wiring Side)RJ 4RJ 3R3 01 0R30 81C3 08 2I C 30 0 2R3 08 0R3 00 8C3 01 3R3 00 7RJ 10C3 00 8R3 01 2R3 00 5

Ref. No. Part No. ★ Description CodeRef. No. Part No. ★ Description Code4221FL91PICTURE TUBEå V101 VB51QDX992X2E X Picture Tube BYå L706 RCiLG0069PEZZ

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code4321FL91L204 VP-XF1R2K0000~ X Peaking, 1.2µH 10% AAL602 RCiLP0223CEZZ X Coil,

421FL91LOCATION OF USER'S CONTROL

Ref. No. Part No. ★ Description CodeRef. No. Part No. ★ Description Code4421FL91C1009 VCKYCY1HF103Z~ X 0.01 50V Ceramic AAC1011 VCKYCY1HB221K~ X 220p

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code4521FL91R754 VRN-RL3DB8R2J+ X 8.2 2W Metal Film ABR755 VRS-RG3DB150J+ X 15 2W

Ref. No. Part No. ★ Description CodeRef. No. Part No. ★ Description Code4621FL91DUNTKA599WEA0PWB-B CRT UNITTRANSISTORSQ853 VS2SC3789//2E X 2SC3789 ABQ

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code4721FL91CABINET PARTS LOCATIONMISCELLANEOUS PARTSP3001 QPLGZ0810CEZZ X Plug,

Ref. No. Part No. ★ Description CodeRef. No. Part No. ★ Description Code4821FL91PACKING OF THE SET

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code4921FL91- M E M O -

Ref. No. Part No. ★ Description CodeRef. No. Part No. ★ Description Code5021FL91COPYRIGHT © 2002 BY SHARP CORPORATIONALL RIGHTS RESERVED.No part of th

521FL91CIRCUIT PROTECTIONThe receiver is protected by a 3.15A fuse (F701),mounted on PWB-A, wired into one side of the ACline input.X-RADIATION PROTEC

621FL91Service Mode Overview1. Service mode is entered by SERVICE key input or CH-UP +VOL-DOWN input during reset.2. Service mode is cleared by enteri

721FL91Adjustment Mode ItemsNo. Item Name IC Register Range DefaultV01 SUB-PICTURE 1 Chip CONTRAST 0~127 127V02 SUB-TINT 1 Chip TINT 0~127 64V03 SUB-C

821FL91Ë SELF ADJUSTMENTH-VCO1. When there is H-VCO self-adjustment key input for adjustment item H-VCO, self-adjustment is performed.2. H-FREE(1chip)

921FL91Setting Mode ItemsNo. Item Name IC Register Range DefaultF01 VideoTone-Gain (TV) 1chip V-TONE 0 / 1 0F02 VideoTone-Gain (AV) 1chip V-TONE 0 / 1