Sharp 21J-FG1RU Service Manual
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Sharp 21J-FG1RU Service Manual

Sharp 21J-FG1RU Service Manual

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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.
Multi 18 Systems
Full Auto Channel Preset and Auto
Channel Skip
100-CH Program Memory
CATV (Hyper Band) Ready
<Used Frequency Synthesizer Tuner>
Black Stretch Circuit
On Timer / Off Timer / Reminder Timer
[1]
SPECIFICATIONS ................................. . ....... 1-1
[1]
IMPORTANT SERVICE NOTES ............ . ....... 2-1
[1]
ADJUSTMENT PRECAUTIONS ............ . ....... 3-1
[2]
ADJUSTMENT ....................................... . ..... 3-14
CHAPTER 4. MEMORY MAP
[1]
MEMORY MAP ...................................... . ....... 4-1
[1]
GRAM
[1]
[1]
CHASSIS LAYOUT ................................ . ....... 7-1
[1]
BLOCK DIAGRAM: CRT UNIT .............. . ....... 8-1
The chassis in this receiver is partially hot. Use an isolation transformer between the line cord plug and power receptacle, when servicing
this chassis. To prevent electric shock, do not remove cover. No user - serviceable parts inside. Refer servicing to qualified service personnel.

SERVICE MANUAL

MODEL
FEATURES
Blue Back Function
Front AV IN & Rear AV IN / OUT Terminals
Front Headphone Jack
Aperture Control Circuit
Auto Fine Tuning
NTSC Colour Comb Filter (AV THRU)
High Contrast Picture
Hotel Mode
CONTENTS
WARNING
SHARP CORPORATION

COLOUR TELEVISION

Chassis No. GA-4M
21J-FG1RU
Russian and English Languages OSD
White Temperature Select
Component In
Surround Sound Effect
(With Bass / Treble / Balance)
AV Stereo
[2]
[3]
BLOCK DIAGRAM: MAIN UNIT ....................8-2
[1]
GRAM............................................................9-1
[1]
WAVEFORMS .............................................10-1
[1]
[2]
[3]
UNIT ............................................................ 11-3
BLIES
[1]
PWB-B: CRT UNIT ......................................12-1
[2]
PWB-C: HEADPHONE UNIT ......................12-1
[3]
PWB-A: MAIN UNIT ....................................12-2
21J-FG1RU
No. S75L821JFG1RU

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  • Page 1: Table Of Contents

    21J-FG1RU SERVICE MANUAL No. S75L821JFG1RU COLOUR TELEVISION Chassis No. GA-4M 21J-FG1RU MODEL 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.

  • Page 2: Chapter 1. Specifications

    21J-FG1RU CHAPTER 1. 21J-FG1RU SPECIFICATIONS Service Manual [1] SPECIFICATIONS Convergence ........................ Self Convergence System Focus ..........................UNI-BI Focusing Sweep Deflection ............................. Magnetic Intermediate Frequencies Picture IF Carrier ..........................38.9MHz Sound IF Carrier Frequency 6.5MHz ............................. 32.4MHz 6.0MHz ............................. 32.9MHz 5.5MHz ............................. 33.4MHz Colour Sub-Carrier Frequency ......................

  • Page 3: Chapter 2. Important Service Notes

    21J-FG1RU CHAPTER 2. 21J-FG1RU IMPORTANT SERVICE NOTES Service Manual [1] IMPORTANT SERVICE NOTES Maintenance and repair of this receiver should be done by qualified service personnel only. 1. SERVICE OF HIGH VOLTAGE SYSTEM AND PICTURE TUBE When servicing the high voltage system, remove static charge from it by connecting a 10K ohm resistor in series with an insulated wire (such as a test probe) between picture tube dag and 2nd anode lead.

  • Page 4: Chapter 3. Adjustment Precautions

    21J-FG1RU CHAPTER 3. 21J-FG1RU ADJUSTMENT PRECAUTIONS Service Manual [1] ADJUSTMENT PRECAUTIONS This model's setting are adjusted in two different ways: through the I2C bus control and in the conventional analog manner. The adjustments via the I2C bus control include preset-only items and variable data.
  • Page 5 21J-FG1RU 1. ADJUSTMENT ITEM ***Below are the adjustment items that should be done, PLS FOLLOW THE PROCEDURE. Otherwise some adjustment items will not be accurate. NO *** ADJUSTMENT ITEM EFFECTIVE MODEL REVISION BUS SET UP OPTION SET UP H-VCO VIF-VCO...
  • Page 6 21J-FG1RU 2. USER DATA IN SERVICE MODE 1) While SERVICE mode ON, EEPROM DATA will switch to the service data. Also, once SERVICE mode OFF, EEPROM will switch back to previous USER DATA. 2) In the service mode, the user data establish as below,...
  • Page 7 21J-FG1RU RC CODE (HEX) R/C KEY NAME SERVICE-ITEM POS 5 G-C DOWN YUV (IN SERVICE MODE V25) POS 6 B-C DOWN YUV (IN SERVICE MODE V25) POS 7 R-D UP YUV (IN SERVICE MODE V25) POS 8 B-D UP YUV (IN SERVICE MODE V25)
  • Page 8 21J-FG1RU MCL1 (HEX AE) CH-No Fv (MHz) Sound Sys NOTE: PLL DATA OF ABOVE FREQ SHOULD TAKE THE ACCOUNT OF PIF SETTING IN SERVICE OPTION O04 (VIF) BEFORE STORING INTO EEPROM 3 – 5...
  • Page 9 21J-FG1RU 3. SHIPPING SETTING & CHECKING INITIAL LANGUAGE SOUND SYSTEM CHINESE CHINESE 1) The following default data has been factory-set for the E2PROM follow by INITIAL DATA selected. ENGLISH ARABIC ITEMS DATA SETTING RUSSIAN LAST POWER MALAY LAST TV/AV MODE...
  • Page 10 21J-FG1RU **AFTER INITIALIZED THE EEPROM (REFER TO FACTORY PRESETTING), READ DATA FROM EEPROM ADDRESS 00H ~ 03H,AND COM- PARE TO THE LIST BELOW, IF DIFFERENT, INITIALIZE THE EEPROM. ADDRESS DATA ADDRESS DATA 00H: 02H: 01H: 03H: *** There are four stages of service mode data. First stage data from V00~V31 (Adjustment Mode).
  • Page 11 21J-FG1RU SETTING MODE (SECOND STAGE) INITIAL FIX/ADJ/ EEPROM ITEMS FUNCTION DATA LENGTH REMARK DATA AUTO C.CLIP-LVL CLIP LEVEL CONTRAST CON- 0(20H) / 1(40H) TROL OF RGB INPUT RGB-CLIP CLIPPING OF RGB CONTRAST 0 (CLIP OFF) / 1(CLIP ON) CONTROL BLACK STRETCH...
  • Page 12 21J-FG1RU SETTING MODE (SECOND STAGE) INITIAL FIX/ADJ/ EEPROM ITEMS FUNCTION DATA LENGTH REMARK DATA AUTO 1W-AV VERT SYNC DETECTION MODE ACCEPTABLE PERIOD: FOR TV (1 WINDOW/2 WINDOW) 0(AUTOMATIC CHANGE) / 1(FIX (WIDE)) V-FREE (NO SYNC) SET VERTICAL TO FORCED FREE...
  • Page 13 21J-FG1RU SETTING MODE (SECOND STAGE) INITIAL FIX/ADJ/ EEPROM ITEMS FUNCTION DATA LENGTH REMARK DATA AUTO NICAM-LOW-ERR-LIM NICAM LOWER ERROR LIMIT 0~255 (NICAM) NICAM-UPP-ERR-LIM NICAM UPPER ERROR LIMIT 0~255 (NICAM) IGR-GAIN-ADJ (IGR) IGR GAIN ADJUST -6~0~+7 FM-ID-SPEED (NICAM) FM SOUND IDENTIFICATION...
  • Page 14 F131 -63~0~+63 BRT YUV OFFSET SUB-BRIGHT OFFSET (YUV) F132 -63~0~+63 *FIX BUS SETUP SHP ANT-ONII OFFSET SHARP ANT-ON II OFFSET FOR F133 -31~0~+31 VIDEO TONE WAIT MD TIME SETTING CYCLE PROCESS TIME F134 AT LOW POWER Contrast OFFSET CONTRAST (PICTURE LEVEL)
  • Page 15 21J-FG1RU OPTION MODE (FOURTH STAGE) EEPROM ITEMS DATA LENGTH INITIAL DATA REMARK ***HOTEL MODE 0 (0FF) / 1 (0N) OPTION SET UP ***HTL-POS 0~99,-- OPTION SET UP ***HTL-VOL 0~60,-- OPTION SET UP 0 (38.0) / 1 (38.9) OPTION SET UP...
  • Page 16 21J-FG1RU 4. ADJ ITEM: BUS SET UP (1 ST & 2ND STAGE SERVICE DATA) SERVICE ITEMS 21J-FG1RU SUB-SHARPNESS SUB-COLOR YUV SHP-AV B-B (OFFSET) SUB-BASS (S-CTRL) SUB-TREB (S-CTRL) AGC-ADJ (S-CTRL) F100 V-DEMUTE-DELAY F101 S-DEMUTE-DELAY F126 R-DRI YUV OFFSET F127 B-DRI YUV OFFSET...

  • Page 17: Adjustment

    21J-FG1RU [2] ADJUSTMENT ADJUSTMENT PRECAUTION: Makesure TV Set is in “Normal Condition” before switch to Service Mode for Adjustment. 1. PIF ADJUSTMENT Adjustment point Adjustment procedure/conditions Waveform and others Tuner IFT 1. Get the tuner ready to receive the CH. E - 9 ( PRESET ) signal,but with no signal input.
  • Page 18 21J-FG1RU 2. PURITY ADJUSTMENT Adjustment point Adjustment procedure/conditions Waveform and others PURITY ADJ. 1. Receive the GREEN-ONLY signal. Adjust the beam current to ~700 µA . 2. Degauss the CRT enough with the degausing coil. Note: Follow the Job Instruction Sheet to adjust the magnetic field.
  • Page 19 21J-FG1RU 3. CONVERGENCE ADJUSTMENT Adjustment point Adjustment procedure/conditions Waveform and others CONVERGENCE 1. Receive the "Crosshatch Pattern" signal. ADJ. 2. Using the remote controller, call NORMAL mode. ( To be done after the purity Static convergence adjustment.) 1. Turn the 4-pole magnet to a proper opening an- gle in order to superpose the blue and red col- ours.
  • Page 20 21J-FG1RU 4. H-VCO, VIF-VCO & S-TRAP fo ADJUSTMENT Adjustment point Adjustment procedure/conditions Waveform and others H-VCO ADJ (MANUAL ADJ) C BUS 1) In No signal (RASTER) condition. CONTROL) 2) Go to service mode, choose service data V03. (AUTO & 3) Connect oscilloscope to IC801 pin11, adj V03 until freq become 15.625 ±...
  • Page 21 21J-FG1RU 5. SCREEN, WHITE BALANCE, SUB-BRIGHTNESS & SUB-CONTRAST ADJUSTMENT No. Adjustment point Adjustment procedure/conditions Waveform and others SCREEN 1) In window pattern signal condition. R-CUTOFF (R-C) UP RC key "1" (HEX 80) ADJUSTMENT R-CUTOFF (R-C) DOWN RC key "4" (HEX 20) C BUS 2) Go to service mode, then select V00.
  • Page 22 21J-FG1RU No. Adjustment point Adjustment procedure/conditions Waveform and others 1) In Window Pattern Signal condition. SUB- WINDOW PATTERN SIGNAL BRIGHTNESS Using Minolta Color Analyzer CA-100, let the (to be done gun point at Dark White position (as attach after screen,...
  • Page 23 21J-FG1RU 6. HORIZONTAL, VERTICAL, DEFLECTION LOOP and FOCUS ADJUSTMENT Adjustment point Adjustment procedure/conditions Waveform and others 1) Receive Monoscope Pattern Signal (PAL 50 Hz) H-SHIFT 2) Choose the service data V13. C BUS 3) Adjust the V13 bus data to have a balance position...
  • Page 24 21J-FG1RU 8. NTSC CHROMA ADJUSTMET Adjustment point Adjustment procedure/conditions Waveform and others SUB-TINT 1) Receive the "NTSC3.58 Colour Bar" signal thru AV in. C BUS CONTROL) 2) Connect the oscilloscope to B-Amp Transistor Base (TP853 ). Range : 100mV/Div. (AC)(Use Probe 10:1) Sweep time : 10 µsec/Div.
  • Page 25 21J-FG1RU 10. PROTECTOR OPERATION CHECKING Adjustment point Adjustment procedure/conditions Waveform and others BEAM 1) Receive "Monoscope Pattern" signal. * Select one of Q853/4/5 to do 2) Set CONTRAST MAX. each short. PROTECTOR 3) Set BRIGHT MAX. 4) During the Collector & Emitter of Q853/4/5 short, make sure the protector ON and switch to standby mode.
  • Page 26 21J-FG1RU 12. FUNCTION OPERATION CHECKING (VIDEO AND AUDIO) Adjustment point Adjustment procedure/conditions Waveform and others CONTRAST key 1) Receive "Monoscope Pattern" signal. 2) Set MENU, then go into PICTURE mode to se- lect CONTRAST. 3) Press Volume Up/Down key to check whether the CONTRAST effect is OK or not.
  • Page 27 21J-FG1RU Adjustment point Adjustment procedure/conditions Waveform and others 1) Receive the "PAL COLOUR BAR" signal, press COLOUR MENU, choose CH-SETTING to select COLOR SYSTEM modes except PAL, check the COLOUR is not working properly. Then, select the "PAL" mode. Check again its colour so that it is working properly.
  • Page 28 21J-FG1RU No. Adjustment point Adjustment procedure/conditions Waveform and others 1) Receive "PAL-D/K" signal, press MENU, choose CH-SETTING SOUND then go into SOUND mode to select B/G, I, M. Check the sound SYSTEM output is not working properly. Select D/K and check the sound output to make sure it is working properly.
  • Page 29 SLV4 MODEL Micon Version CHK1 CHK2 FIGURE SLV7 21J-FG1RU RH-IXB226WJZZ(Software Ver. 1.0) MICON : ZZ CHK1 : ACT CHK1: AC-DET protection loop is to be exited when AD3 SOFT : 1.0 CHK2 : NO (Prot) is detected HIGH so that protection mode...

  • Page 30: Memory Map

    21J-FG1RU CHAPTER 4. 21J-FG1RU MEMORY MAP Service Manual [1] MEMORY MAP SLAVE ADDRESS : A0(00-FF) A2(100-1FF) A4(200-2FF) A6(300-3FF) A8(400-4FF) DATA ADDRESS MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL (HEX) DEFAULT RANGE WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE...
  • Page 31 21J-FG1RU MEMORY MAP (Continued) SLAVE ADDRESS : A0(00-FF) A2(100-1FF) A4(200-2FF) A6(300-3FF) A8(400-4FF) DATA ADDRESS MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL (HEX) DEFAULT RANGE WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA REMARK TUNING FREQUENCY (LOW BYTE)
  • Page 32 21J-FG1RU MEMORY MAP (Continued) SLAVE ADDRESS : A0(00-FF) A2(100-1FF) A4(200-2FF) A6(300-3FF) A8(400-4FF) DATA ADDRESS MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL (HEX) DEFAULT RANGE WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA REMARK TUNING FREQUENCY (LOW BYTE)
  • Page 33 21J-FG1RU MEMORY MAP (Continued) SLAVE ADDRESS : A0(00-FF) A2(100-1FF) A4(200-2FF) A6(300-3FF) A8(400-4FF) DATA ADDRESS MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL (HEX) DEFAULT RANGE REMARK WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA TUNING FREQUENCY (LOW BYTE)
  • Page 34 21J-FG1RU MEMORY MAP (Continued) SLAVE ADDRESS : A0(00-FF) A2(100-1FF) A4(200-2FF) A6(300-3FF) A8(400-4FF) DATA ADDRESS MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL (HEX) DEFAULT RANGE WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE REMARK SETTING DATA S-SYSTEM (POS0) C-SYSTEM (POS0)
  • Page 35 21J-FG1RU MEMORY MAP (Continued) SLAVE ADDRESS : A0(00-FF) A2(100-1FF) A4(200-2FF) A6(300-3FF) A8(400-4FF) DATA ADDRESS MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL (HEX) DEFAULT RANGE WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE REMARK SETTING DATA S-SYSTEM (POS64) C-SYSTEM (POS64)
  • Page 36 21J-FG1RU MEMORY MAP (Continued) SLAVE ADDRESS : A0(00-FF) A2(100-1FF) A4(200-2FF) A6(300-3FF) A8(400-4FF) DATA ADDRESS MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL (HEX) DEFAULT RANGE WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA REMARK ROM CORRECTION-1 CODE...
  • Page 37 21J-FG1RU MEMORY MAP (Continued) SLAVE ADDRESS : A0(00-FF) A2(100-1FF) A4(200-2FF) A6(300-3FF) A8(400-4FF) DATA ADDRESS MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL (HEX) DEFAULT RANGE WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA REMARK 00-FF Message Favorite Three - Character 01...
  • Page 38 21J-FG1RU MEMORY MAP (Continued) SLAVE ADDRESS : A0(00-FF) A2(100-1FF) A4(200-2FF) A6(300-3FF) A8(400-4FF) DATA ADDRESS MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL (HEX) DEFAULT RANGE WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA REMARK R-DRIVE (V00) 00-7F...
  • Page 39 21J-FG1RU MEMORY MAP (Continued) SLAVE ADDRESS : A0(00-FF) A2(100-1FF) A4(200-2FF) A6(300-3FF) A8(400-4FF) DATA ADDRESS MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL (HEX) DEFAULT RANGE REMARK WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA 00-3E SHARPNESS-YUV (F31)
  • Page 40 21J-FG1RU MEMORY MAP (Continued) SLAVE ADDRESS : A0(00-FF) A2(100-1FF) A4(200-2FF) A6(300-3FF) A8(400-4FF) DATA ADDRESS MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL (HEX) DEFAULT RANGE WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA REMARK S-Step (F111) 00-3C...
  • Page 41 21J-FG1RU MEMORY MAP (Continued) SLAVE ADDRESS : A0(00-FF) A2(100-1FF) A4(200-2FF) A6(300-3FF) A8(400-4FF) DATA ADDRESS MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL (HEX) DEFAULT RANGE WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA REMARK 0-FF Inbox Message - Character 01...
  • Page 42 21J-FG1RU MEMORY MAP (Continued) SLAVE ADDRESS : A0(00-FF) A2(100-1FF) A4(200-2FF) A6(300-3FF) A8(400-4FF) DATA ADDRESS MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL (HEX) DEFAULT RANGE REMARK WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA A2 FM A2 ST...
  • Page 43 21J-FG1RU MEMORY MAP (Continued) SLAVE ADDRESS : A0(00-FF) A2(100-1FF) A4(200-2FF) A6(300-3FF) A8(400-4FF) DATA ADDRESS MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL (HEX) DEFAULT RANGE WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA REMARK A2 FM A2 ST...
  • Page 44 21J-FG1RU MEMORY MAP (Continued) SLAVE ADDRESS : A0(00-FF) A2(100-1FF) A4(200-2FF) A6(300-3FF) A8(400-4FF) DATA ADDRESS MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL (HEX) DEFAULT RANGE WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA REMARK 00-FF Message Favorite One- Character 01...
  • Page 45 21J-FG1RU MEMORY MAP (Continued) SLAVE ADDRESS : A0(00-FF) A2(100-1FF) A4(200-2FF) A6(300-3FF) A8(400-4FF) DATA ADDRESS MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL (HEX) DEFAULT RANGE WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA REMARK 0-FF Message Favorite Two- Character 01...

  • Page 46: Chapter 5. Trouble Shooting Flowchart

    21J-FG1RU CHAPTER 5. 21J-FG1RU TROUBLE SHOOTING FLOWCHART Service Manual [1] TROUBLE SHOOTING FLOWCHART NO RASTER Check F701. Blown out. Replace the fuse. Check T701 pin (17) voltage The fuse is blown out again. (Approx. 310V at 220V AC) Check NR701.
  • Page 47 21J-FG1RU TROUBLE SHOOTING FLOWCHART (Continued) CIRCUITS TO BE CHECKED: NO SOUND Sound Detector Circuit. Sound Switch and Att. Control. Audio Output Circuit. Does signal appear at pins Check TV sound from pin (54) (10) and (23) of IC3501 ? of IC801.
  • Page 48 21J-FG1RU TROUBLE SHOOTING FLOWCHART (Continued) NO SPECIFIC COLOUR Is some colour produced in B/W broadcast reception ? Is the white balance properly Check IC801. adjusted ? Re-adjust the white balance. The picture colour is cyan. The picture colour is magenta.

  • Page 49: Chapter 6. Solid State Device Base Dia

    21J-FG1RU CHAPTER 6. 21J-FG1RU SOLID STATE DEVICE BASE DIAGRAM Service Manual [1] SOLID STATE DEVICE BASE DIAGRAM TOP VIEW COLLECTOR COLLECTOR P C 1 2 3 BASE EMITTER BASE EMITTER BR24L08 FXA003WJ D601A B709A CATHODE CATHODE ANODE ANODE EX1393C EX0263T...

  • Page 50: Chapter 7. Chassis Layout Chassis Layout

    21J-FG1RU CHAPTER 7. 21J-FG1RU CHASSIS LAYOUT Service Manual [1] CHASSIS LAYOUT 7 – 1...

  • Page 51: Chapter 8. Block Diagram

    21J-FG1RU CHAPTER 8. 21J-FG1RU BLOCK DIAGRAM Service Manual [1] BLOCK DIAGRAM: CRT UNIT [2] BLOCK DIAGRAM: HEADPHONE UNIT 8 – 1...

  • Page 52: Block Diagram: Main Unit

    21J-FG1RU [3] BLOCK DIAGRAM: MAIN UNIT 8 – 2...
  • Page 53 21J-FG1RU 8 – 3...

  • Page 54: Chapter 9. Description Of Schematic Diagram

    21J-FG1RU CHAPTER 9. 21J-FG1RU DESCRIPTION OF SCHEMATIC DIAGRAM Service Manual [1] DESCRIPTION OF SCHEMATIC DIAGRAM SAFETY NOTES: NOTES: DISCONNECT THE AC PLUG FROM THE AC OUT- The unit of resistance "ohm" is omitted. LET BEFORE REPLACING PARTS. (K = 1000 ohms, M = Mega ohm).

  • Page 55: Chapter 10. Waveform

    21J-FG1RU CHAPTER 10. 21J-FG1RU WAVEFORM Service Manual [1] WAVEFORMS 1) 0.92 Vp-p 2) 4.08 Vp-p 3) 4.21 Vp-p 4) 4.38 Vp-p 5) 6.25 Vp-p Horiz. Rate Horiz. Rate Horiz. Rate Horiz. Rate Horiz. Rate 6) 6.42 Vp-p 7) 2.04 Vp-p 8) 1.81 Vp-p...

  • Page 56: Chapter 11. Schematic Diagram

    21J-FG1RU CHAPTER 11. 21J-FG1RU SCHEMATIC DIAGRAM Service Manual [1] SCHEMATIC DIAGRAM: MAIN UNIT 11 – 1...
  • Page 57 21J-FG1RU 11 – 2...

  • Page 58: Schematic Diagram: Crt Unit

    21J-FG1RU [2] SCHEMATIC DIAGRAM: CRT UNIT [3] SCHEMATIC DIAGRAM: HEADPHONE UNIT 11 – 3...

  • Page 59: Chapter 12. Printed Wiring Board Assem

    21J-FG1RU CHAPTER 12. 21J-FG1RU PRINTED WIRING BOARD ASSEMBLIES Service Manual [1] PWB-B: CRT UNIT 1. CRT UNIT (Component Side) Component Side [2] PWB-C: HEADPHONE UNIT 1. HEADPHONE UNIT (Component Side) (Chip Parts Side) Component Side Chip Parts Side 12 – 1...

  • Page 60: Pwb-A: Main Unit

    21J-FG1RU [3] PWB-A: MAIN UNIT 1. MAIN UNIT (Component Side) 12 – 2...
  • Page 61 21J-FG1RU 12 – 3...
  • Page 62 21J-FG1RU 2. MAIN UNIT (Chip Parts Side) 12 – 4...
  • Page 63 21J-FG1RU 12 – 5...

  • Page 64: Parts Guide

    21J-FG1RU PARTS GUIDE No. S75L821JFG1RU 21J-FG1RU MODEL CONTENTS PICTURE TUBE MISCELLANEOUS PARTS PRINTED WIRING BOARD CABINET PARTS ASSEMBLIES SUPPLIED ACCESSORIES MAIN UNIT PACKING PARTS CRT UNIT HEADPHONE UNIT Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these...
  • Page 65 21J-FG1RU PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [1] PICTURE TUBE VB51LYZ395XFU Picture Tube L706 RCILGA095WJZZ Degaussing Coil DY601 RCILHA128WJZZ Deflection Yoke QEARCA012WJZZ Corting Earth PMAGF3046CEZZ Purity Mag. PSPAG0003PEZZ Rubber Wedge LHLDW0003PEKZ Wire Holder LHLDW1075PEKZ Wire Holder [2] PRINTED WIRING BOARD ASSEMBLIES...
  • Page 66 21J-FG1RU PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [3] MAIN UNIT VA701 RH-VX0073CEZZ Varistor PR701 RMPTP0085CEZZ Packaged Circuit X801 RCRSAA019WJZZ Crystal, 4.433619MHz L203 VP-DF270K0000Y Peaking 27µH L602 RCILP0223CEZZ+ Coil L701 RCILF0086PEN1 Coil L751 RCILP0179CEZZ+ Coil L801 VP-CF220K0000Y Peaking 22µH...
  • Page 67 21J-FG1RU PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [3] MAIN UNIT C807 VCEA0A1CW108M+ 1000 16V Electrolytic C808 VCKYCY1HF103ZY 0.01 50V Ceramic C809 VCKYCY1HF103ZY 0.01 50V Ceramic C810 VCKYCY1HF103ZY 0.01 50V Ceramic C811 VCEA9M1CW107M+ 100 16V Electrolytic C813 VCCCCY1HH181JY 180p 50V Ceramic...
  • Page 68 21J-FG1RU PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [3] MAIN UNIT R303 VRS-CY1JF473JY 47k 1/16W Metal Oxide R304 VRD-RA2BE683JY 68k 1/8W Carbon R305 VRS-CY1JF274JY 270k 1/16W Metal Oxide R307 VRS-CY1JF122JY 1.2k 1/16W Metal Oxide R308 VRD-RA2BE562JY 5.6k 1/8W Carbon...
  • Page 69 21J-FG1RU PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [3] MAIN UNIT R804 VRS-CY1JF222JY 2.2k 1/16W Metal Oxide R805 VRS-CY1JF222JY 2.2k 1/16W Metal Oxide R806 VRS-CY1JF222JY 2.2k 1/16W Metal Oxide R807 VRS-CY1JF222JY 2.2k 1/16W Metal Oxide R370 VRS-CY1JF471JY 470 1/16W Metal Oxide...
  • Page 70 21J-FG1RU PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [3] MAIN UNIT R1849 VRS-CY1JF272JY 2.7k 1/16W Metal Oxide R1850 VRS-CY1JF681JY 680 1/16W Metal Oxide R1851 VRS-CY1JF221JY 220 1/16W Metal Oxide R1852 VRS-CY1JF221JY 220 1/16W Metal Oxide R1853 VRS-CY1JF221JY 220 1/16W Metal Oxide...
  • Page 71 21J-FG1RU PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [4] CRT UNIT R861 VRS-VV3DB153J 15k 2W Metal Oxide R863 VRS-VV3DB153J 15k 2W Metal Oxide R864 VRD-RA2BE470JY 47 1/8W Carbon R876 VRD-RA2BE121JY 120 1/8W Carbon R877 VRD-RA2BE121JY 120 1/8W Carbon R878...
  • Page 72 21J-FG1RU [7] CABINET PARTS PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [7] CABINET PARTS CCABAB104WEV0 Font Cabinet Ass'y Not Available Font Cabinet JBTN-A485WJSA Power Button MSPRC0005PEFW Spring for Button GCOVAB345WJSA R/C Cover HBDGB3155CESA Sharp Badge GDORFA158WJKA Door MSPRPA031WJFW Door Spring...
  • Page 73 21J-FG1RU [9] PACKING PARTS ★ S5 ★ S2 ★ S3 ★ S2 ★ S4 ★ S1 ★ MARK : Not replacement items. PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [9] PACKING PARTS (NOT REPLACEMENT ITEM) SPAKCC260WJZZ Packing Case SPAKXA822WJZZ...
  • Page 74 COPYRIGHT 2005 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, photocopying, recording, or otherwise, without prior written permission of the publisher.
  • Page 75 www.s-manuals.com...

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