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Sharp SX80J9 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.
» ELECTRICAL SPECIFICATIONS ...................................................................................................... 2
» IMPOTANT SERVICE NOTES ........................................................................................................... 2
» ADJUSTMENT PRECAUTIONS ........................................................................................................ 3
» SERVICE ADJUSTMENT .................................................................................................................. 6
» TROUBLE SHOOTING TABLE ........................................................................................................ 14
» SOLID STATE DEVICE BASE DIAGRAM ....................................................................................... 19
» CHASSIS LAYOUT .......................................................................................................................... 20
» WAVEFORMS ................................................................................................................................. 22
» DESCRIPTION OF SCHEMATIC DIAGRAM ................................................................................... 23
» BLOCK DIAGRAM ........................................................................................................................... 38
» PRINTED WIRING BOARD ASSEMBLIES ..................................................................................... 40
» REPLACEMENT PARTS LIST ......................................................................................................... 49
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
28 SYSTEM COLOUR TELEVISION
MODEL
CONTENTS
WARNING
SHARP CORPORATION
1
Chassis No. SP-71
SX80J9
SX80J9
S69J4SX80J9//
Page

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  • Page 1: Table Of Contents

    SX80J9 SERVICE MANUAL S69J4SX80J9// 28 SYSTEM COLOUR TELEVISION Chassis No. SP-71 SX80J9 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: Electrical Specifications

    ELECTRICAL SPECIFICATIONS IMPOTANT SERVICE NOTES Power Input ................AC 220-240V, 50Hz Power Consumption ..................230W Convergence ..............Self Convergence System Focus ............Bi-Potential, Uni-Potential Electroslatic Maintenance and repair of this receiver should be done by Sweep Deflection ..................Magnetic Intermediate Frequency qualified service personnel only.

  • Page 3: Adjustment Precautions

    ADJUSTMENT PRECAUTIONS SERVICE MODE (I C bus adjustment) (1) Press the specific keys to change the modes as follows. This model’s settings are adjusted in two different ways: through the I C bus control and in the conventional analog manner. The adjustment via I C bus control include present-only variable data.
  • Page 4 (2) * In going to the service mode, read the data at addresses 00H thru 03H on the EEPROM. If the data is different 60Hz ADJUST mode SPECIAL PICTURE mode from the one below, initialize the EEPROM as follows. 00H:50H 01H:80H 02H:30H 03H:13H...
  • Page 5 Setting item On-screen display Data setting Initial value Setting item On-screen display Data setting Initial value B.S. POINT2 BSP2 VCD1 B.S. POINT2 PIP PLL SETTING PLLTC PLLTC B.S.G. VCD1 B.S.G. PIP FRAME LUMINANCE BLACK LEVEL CORRECT1 VCD1 B.L.C. PIP FRAME COLOUR FRV.FRU BLACK LEVEL CORRECT2 VCD1...

  • Page 6: Service Adjustment

    FACTRY SETTINGS SERVICE ADJUSTMENT ITEM DATA SETTING SKIP PIF/AFT/AGC ADJUSTMENT C-SYSTEM AUTO 1. TUNER IFT (preset) ADJUSTMENT: TU201(TU101) S-SYSTEM IGR FORCED FM 1. Get the tuner ready to receive the E-9CH IF-OUT IGR MODE ST, MAIN signal,but with no signal input. Adjust PLL data. NICAM FORCED FM 1000p 2.
  • Page 7 PIF/AFT/AGC ADJUSTMENT DIGITAL COMB FILTER Y LEVEL ADJUSTMENT 1. DIGITAL COMB FILTER Y LEVEL ADJUSTMENT: R5467 3. AFT ADJUSTMENT: T204(T104) DC voltage at TP201 [ Pin (1) of IC201] TP101 [ Pin (1) of IC101] 1. Input the PAL colour bar (100% white colour bar) signal to AV-IN terminal with a 75 ohm termination (input 1.
  • Page 8 PIP (SUB-SCREEN) ADJUSTMENT (on the actual TV set) PURITY ADJUSTMENT 3. PIP SUB-TINT ADJUSTMENT (I C bus adjustment) 1. Receive the white pattern by pattern generator. Set the contrast control to have a beam current of 1.9 mA. 1. Receive J-8CH "NTSC colour bar" signal for the 2.
  • Page 9 CONVERGENCE ADJUSTMENT CRT CUT-OFF, BACKGROUND AND SUB-CONTRAST ADJUSTMENT (To be done after the purity adjustment) 1. Receive the E-2CH "CROSSHATCH PATTERN" sig- R G B 1. CRT CUT-OFF ADJUSTMENTS B G R nal. 2. Using the remote controller, call the Normal mode. Adjusting Point Sub-Brightness: R890 STATIC CONVERGENCE...
  • Page 10 2. Using the remote controller, call the Video Normal mode. 1. Receive the E-5CH "MONOSCOPE PATTERN" signal. 3. Adjust the focus control so that the "SHARP" at the upside of the screen. 2. Using the remote controller, call the Video Normal mode.
  • Page 11 PAL CHROMA ADJUSTMENT SIF (NICAM) ADJUSTMENT 1. SUB-COLOUR ADJUSTMENT 1. VCO COIL ADJUSTMENT: T2302 C bus adjustment, main picture) 1. Receive the E-69CH (PAL COLOUR BAR) signal. 1. Receive E-12CH "PAL colour bar" signal. 2. Adjust T2302 so that the DC voltage of connecter (NI) pin (2) (TP204 located on the main unit or TP2303 2.
  • Page 12 A/V INPUT AND OUTPUT CHECK SECAM CHROMA ADJUSTMENT 1. BELL FILTER fo ADJUSTMENT 1. AUDIO/VIDEO OUTPUT CHECK C bus adjustment) 1. Receive the E-12CH "PAL COLOUR BAR" signal (100% white colour bar, sound 400Hz, 100% mod.). 2. Terminate the video output with a 75-ohm impedance. Make sure the output is as specified (1.0Vp-p ± 3dB). 1.
  • Page 13 3 In the mono mode, listen to the sound from the SPATIALIZER 2 Select SHARPNESS in the Menu. speakers and make sure it feel wide. 3 Using the UP/DOWN keys, make sure the sharp- SPATIALIZER ness changes accordingly. 1 Make sure all the channel (0 thru 99) signs appear...

  • Page 14: Trouble Shooting Table

    Trouble for Sub Pinture (PIP). Circuits to be checked: See related trouble shooting, and convert to equivalent parts as followings. NO RASTER • Power circuit. TU201 TU101 IC201 IC101 • Video circuit. L200 L105 • Protector cirucit. Q201 Q101 etc. •...
  • Page 15 Lights up Circuits to be checked: turn off • Power circuit. PROM • Micon circuit. (IC1002) • Protector circuit • Peripheral circuit of AV-SW Bus Line. (IC451) Check F1701. VCD1 (IC801) Normal Blown out SECAM (IC901) (IC1502) Replace the Fuse. S-CONTROL (IC303) Is the Fuse again blown out?
  • Page 16 Circuits to be checked: Circuits to be checked: NO PICTURE • A/V circuit. • PIF circuit. • Tuner. • A/V circuit. • PIF. • Video output. • Peripheral circuit of Bus Line. • Peripheral circuit of Bus Line. No snow noise. Does the snow noise appear on the picture tube at max Snow noise increase.
  • Page 17 Circuits to be checked: NO NORMAL SOUND • Sound control circuit. NO SPECIFIC COLOUR • Sound out circuit. • SIF circuit. • S-convertor. Is audio output terminal J451 normal. Is only RF signal's colour abnormal? Is there audio signal at pins (6), (7) of Check TV sound.
  • Page 18 COLOUR PRODUCED Colour control circuit detective. Colour in B/W mode. Colour saturation control does not Improper colour. work. Turn up and down Colour control. Turn Colour control to minimum. Turn on Colour system forced Does colour gain go up and Does colour disappear? switch.

  • Page 19: Solid State Device Base Diagram

    SX80J9 SOLID STATE DEVICE BASE DIAGRAM TOP VIEW VHiTC9090AN-1 VHiLH64256C-1 VHiTA8859CP-1 VHiTA8776N/-1 RH-iX3081CEN3 VHiAN7108//-1 VHiTA8814N/-1 VHiTA8772AN-1 VHiAN7397K/-1 RH-iX2451CEZZ VHiTDA9840T-1 VHiTDA9813T-1 VHiSAA7283G-1 VHiUPC358C/-1 VHiM24C08B/-1 VHiTDA4665/5E VHiTDA9141/-1 RH-FX0024CEZZ RH-iX0249CEZZ VHiTOP209//-1 VHiBA7655A/-1 VHiTA1218AN-1 RH-iX2915CEZZ VHiTDA8443A-1 VHiTA1229N/-1 VHiBA7357S/-1 VHiSDA9288X-1 SIDE VIEW ANODE (RED) BASE...

  • Page 20: Chassis Layout

    SX80J9 CHASSIS LAYOUT PWB-B: CRT UNIT PWB-F: P-IN-P UNIT PWB-A: MAIN UNIT PWB-G: TEXT UNIT PWB-D PWB-F PWB-E: NICAM/IGR UNIT PWB-G PWB-E PWB-D: DIG. COM UNIT...
  • Page 21 SX80J9 PWB-C: POWER UNIT...

  • Page 22: Waveforms

    SX80J9 WAVEFORMS...

  • Page 23: Description Of Schematic Diagram

    SX80J9 DESCRIPTION OF SCHEMATIC DIAGRAM CAUTION: This circuit diagram is original one, therefore there may be a slight difference from yours. SAFETY NOTES: NOTES: 1. DISCONNECT THE AC PLUG FROM THE AC OUTLET BEFORE 1. The unit of resistance "ohm" is omitted.
  • Page 24 SX80J9 Tuner å VTUVTST6HZ64/ NOTE: The parts here shown are supplied as an assembly but not independently.
  • Page 25 SX80J9 SCHEMATIC DIAGRAM: CRT UNIT...
  • Page 26 SX80J9 SCHEMATIC DIAGRAM: MAIN Unit-1...
  • Page 27 SX80J9...
  • Page 28 SX80J9 SCHEMATIC DIAGRAM: MAIN Unit-2...
  • Page 29 SX80J9...
  • Page 30 SX80J9 SCHEMATIC DIAGRAM: POWER Unit...
  • Page 31 SX80J9...
  • Page 32 SX80J9 SCHEMATIC DIAGRAM: NICAM/IGR Unit...
  • Page 33 SX80J9...
  • Page 34 SX80J9 SCHEMATIC DIAGRAM: P-IN-P Unit...
  • Page 35 SX80J9...
  • Page 36 SX80J9 SCHEMATIC DIAGRAM: DIG. COM Unit...
  • Page 37 SX80J9 SCHEMATIC DIAGRAM: TEXT Unit...

  • Page 38: Block Diagram

    SX80J9 BLOCK DIAGRAM...
  • Page 39 SX80J9...

  • Page 40: Printed Wiring Board Assemblies

    SX80J9 PRINTED WIRING BOARD ASSEMBLIES PWB-A: MAIN Unit (Wiring Side)
  • Page 41 SX80J9...
  • Page 42 SX80J9 PWB-A: MAIN Unit (Chip Parts Side)
  • Page 43 SX80J9...
  • Page 44 SX80J9 PWB-C: POWER Unit (Wiring Side)
  • Page 45 SX80J9...
  • Page 46 SX80J9 PWB-B: CRT Unit (Wiring Side)
  • Page 47 SX80J9 PWB-D: DIG. COM Unit (Wiring Side) PWB-E: NICAM/IGR Unit (Wiring Side)
  • Page 48 SX80J9 PWB-F: P-IN-P Unit (Wiring Side) PWB-G: TEXT Unit (Wiring Side)

  • Page 49: Replacement Parts List

    SX80J9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PARTS LIST PWB-A: DUNTK9356WEX6 MAIN UNIT PARTS REPLACEMENT TUNER AND ASSEMBLY Replacement parts which have these special safety characteristics NOTE: THE PARTS HERE SHOWN ARE SUPPLIED identified in this manual: electrical components having such fea- AS AN ASSEMBLY BUT NOT INDEPENDENTLY.
  • Page 50 SX80J9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code D615 VHD1SS119//1E R 1SS119 PWB-A: DUNTK9356WEX6 D616 VHD1SS119//1E R 1SS119 MAIN UNIT (Continued) D617 VHD1SS119//1E R 1SS119 D801 RH-EX0586CEZZ R Zener Diode Q407 VS2SD601A//-1 R 2SD601A D805...
  • Page 51 SX80J9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code C223 VCCCCY1HH150J R 15p Ceramic PWB-A: DUNTK9356WEX6 C224 VCCCCY1HH220J R 22p Ceramic MAIN UNIT (Continued) C225 VCCCCY1HH101J R 100p Ceramic C226 VCFYHA1HA684J R 0.68 Mylar L206 VP-XF390K0000 R Peaking 39µH...
  • Page 52 SX80J9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code C638 VCQYTA1HM104K R 0.1 Mylar PWB-A: DUNTK9356WEX6 C639 VCQYTA1HM104K R 0.1 Mylar MAIN UNIT (Continued) C640 VCQYTA1HM104K R 0.1 Mylar C641 VCQYTA1HM104K R 0.1 Mylar C358 VCEAGA1CW106M R 10...
  • Page 53 SX80J9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code R144 VRS-CY1JF223J R 22k 1/16W Metal Oxide PWB-A: DUNTK9356WEX6 R145 VRD-RA2BE223J R 22k 1/8W Carbon MAIN UNIT (Continued) R146 VRS-CY1JF223J R 22k 1/16W Metal Oxide R147 VRS-CY1JF272J R 2.7k 1/16W Metal Oxide...
  • Page 54 SX80J9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code R403 VRS-CY1JF222J R 2.2k 1/16W Metal Oxide PWB-A: DUNTK9356WEX6 R404 VRS-CY1JF821J R 820 1/16W Metal Oxide MAIN UNIT (Continued) R405 VRS-CY1JF821J R 820 1/16W Metal Oxide R406...
  • Page 55 SX80J9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code R815 VRS-CY1JF221J R 220 1/16W Metal Oxide PWB-A: DUNTK9356WEX6 R816 VRS-CY1JF221J R 220 1/16W Metal Oxide MAIN UNIT (Continued) R817 VRS-CY1JF221J R 220 1/16W Metal Oxide R818...
  • Page 56 SX80J9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code R1122 VRS-CY1JF101J R 100 1/16W Metal Oxide PWB-A: DUNTK9356WEX6 R1123 VRS-CY1JF563J R 56k 1/16W Metal Oxide MAIN UNIT (Continued) R1124 VRD-RA2BE223J R 22k 1/8W Carbon R1125 VRS-CY1JF000J...
  • Page 57 SX80J9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code C1508 VCCSPA2HL560K R 56p 500V Ceramic PWB-B: DUNTK8776WEX1 C1509 VCEAGA2AW226M R 22 100V Electrolytic CRT UNIT C1521 VCKYPA1HF103Z R 0.01 Ceramic C1522 VCKYPA1HF103Z R 0.01 Ceramic TRANSISTORS...
  • Page 58 SX80J9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-B: DUNTK8776WEX1 PWB-C: DUNTK9357WEX7 CRT UNIT (Continued) POWER UNIT R1539 VRD-RA2BE681J R 680 1/8W Carbon INTEGRATED CIRCUITS R1540 VRD-RA2BE104J R 100k 1/8W Carbon IC1301 VHiTA8256H/-1 R TA8256H...
  • Page 59 SX80J9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code C1329 VCEAGA1AW107M R 100 Electrolytic PWB-C: DUNTK9357WEX7 C1330 VCFYSA1HB154J R 0.15 Mylar POWER UNIT (Continued) C1333 VCEAGA1CW476M R 47 Electrolytic C1334 VCEAGA1CW106M R 10 Electrolytic D1708 RH-DX0279CEZZ...
  • Page 60 SX80J9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code R1307 VRD-RA2BE103J R 10k 1/8W Carbon PWB-C: DUNTK9357WEX7 R1308 VRD-RA2BE103J R 10k 1/8W Carbon POWER UNIT (Continued) R1309 VRD-RA2BE182J R 1.8k 1/8W Carbon R1311 VRD-RA2BE103J R 10k 1/8W...
  • Page 61 SX80J9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code S1701 QSW-P0588CEZZ R Main Power å PWB-C: DUNTK9357WEX7 POWER UNIT (Continued) MISCELLANEOUS PARTS å RY1701 RRLYJ0046CEZZ R Relay R1613 VRD-RA2EE101J R 100 1/4W Carbon å F1701 QFS-C5022CEZZ...
  • Page 62 SX80J9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code C5486 VCKYCY1HF103Z R 0.01 Ceramic PWB-D: DUNTK9358WEV0 C5487 VCEAGA0JW477M R 470 6.3V Electrolytic DIG. COM UNIT C5488 VCKYCY1HF103Z R 0.01 Ceramic C5489 VCCCCY1HH220J R 22p Ceramic INTEGRATED CIRCUIT...
  • Page 63 SX80J9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code C2332 VCKYCY1EF104Z R 0.1 Ceramic PWB-E: DUNTK9373WEV3 C2333 VCEAGA1CW106M R 10 Electrolytic NICAM / IGR UNIT C2334 VCKYCY1HF103Z R 0.01 Ceramic C2335 VCEAGA1HW474M R 0.47 Electrolytic INTEGRATED CIRCUITS C2336 VCKYCY1HF103Z R 0.01...
  • Page 64 SX80J9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-E: DUNTK9373WEV3 PWB-F: DUNTK9426WEV0 NICAM / IGR UNIT (Continued) P-IN-P UNIT R2334 VRS-CY1JF561J R 560 1/16W Metal Oxide INTEGRATED CIRCUITS R2341 VRS-CY1JF392J R 3.9k 1/16W Metal Oxide...
  • Page 65 SX80J9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code R4933 VRD-RA2BE153J R 15k 1/8W Carbon PWB-F: DUNTK9426WEV0 R4934 VRS-CY1JF563J R 56k 1/16W Metal Oxide P-IN-P UNIT (Continued) R4935 VRD-RA2BE681J R 680 1/8W Carbon R4936 VRS-CY1JF563J R 56k 1/16W Metal Oxide...
  • Page 66 SX80J9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code MISCELLANEOUS PARTS PWB-G: DUNTK8558WEV7 P1801 QPLGN0885CEZZ R Plug, 8-pin (TX) TEXT UNIT P1802 QPLGN0785CEZZ R Plug, 7-pin (TE) PSLDM0174PEFW J Shield SLD1801 INTEGRATED CIRCUITS PSLDM0175PEFW J Shield...
  • Page 67 – Front Cabinet — HDECQ0137PESA R LED Cover GCOVA0106PEZZ R Cover, in Door GDORF0181PESA R Door HBDGB3120CESB R Badge, "SHARP" JBTN-0315PESA R Button, Power MSPRC0005PEFW R Spring, Power Button PKAi-0007PE00 R Latch, for Door HiNDP0242PEZZ R Indication Plate, In Door GCABB2388PEKA R Rear Cabinet Ass’y...
  • Page 68 Code Ref. No. Part No. Description Code COPYRIGHT © 1999 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.

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