Service manual

ManualsBrandsSharp ManualsTVs & monitors26SL71

26SL71

29SL81

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.

S60B526SL71//

MODELS

SHARP CORPORATION

OUTLINE

SERVICE MANUAL

26SL71

29SL81

COLOR TELEVISION

Chassis No. SN-91A

POWER POWER

PUSH OPEN

MTS STEREO

This Service Manual covers the modifications from Models 26SL70 and 29SL80. For data and information

not discussed here, please refer to the 26SL70/29SL80 Service Manual (S69J129SL80//).

Summary of content (60 pages)

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26SL71 29SL81 SERVICE MANUAL S60B526SL71// COLOR TELEVISION Chassis No. SN-91A POWER POWER PUSH OPEN MTS STEREO MODELS 26SL71 29SL81 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. OUTLINE This Service Manual covers the modifications from Models 26SL70 and 29SL80.
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6SL71 29SL81 LIST OF CHANGED PARTS Ref. No. Description Current (26SL70) PRINTED WIRING BOARD ASSEMBLIES PWB-A Main Unit DUNTK9806WEV1 MAIN UNIT IC751 I.C. VHiKA7809Pi-1 IC2001 I.C. RH-iX3256CEZZ IC2101 I.C. VHiM24C01B/-1 L2040 Coil RCiLB0159CEZZ J799 Resistor – RJ15 Resistor VRS-CY1JF000J RJ16 Resistor VRS-CY1JF000J R2016 Resistor – R2017 Resistor – R2023 Resistor – R2030 Resistor VRS-CY1JF103J R2033 Resistor VRS-CY1JF102J P704 Plug QPLGN0304CEZZ POWER UNIT IC5771 I.C.
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26SL71 29SL81 LIST OF CHANGED PARTS Ref. No. Description Current (29SL80) PICTURE TUBE DY601 Deflection Yoke RCiLH0119MEZZ PRINTED WIRING BOARD ASSEMBLIES PWB-A MAIN Unit DUNTK9806WEV2 MAIN UNIT IC751 I.C. VHiKA7809Pi-1 IC2001 I.C. RH-iX3256CEZZ IC2101 I.C. VHiM24C01B/-1 L2040 Coil RCiLB0159CEZZ J799 Resistor – RJ15 Resistor VRS-CY1JF000J RJ16 Resistor VRS-CY1JF000J R2016 Resistor – R2017 Resistor – R2026 Resistor VRD-RA2BE682J R2033 Resistor VRS-CY1JF102J P704 Plug QPLGN0304CEZZ POWER UNIT IC5771 I.C.
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26SL71 29SL81 MODEL 26SL71 SCHEMATIC DIAGRAM:MAIN-1 Unit H G F 7001GEFW E D C B A 1 2 3 4 4 5 6 7 8 9 10 11 5 12
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26SL71 29SL81 MODEL 26SL71 SCHEMATIC DIAGRAM:MAIN-2 Unit H G F E D C B A 1 2 3 6 4 5 6 7 8 9 10 11 7 12
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26SL71 29SL81 MODEL 29SL81 SCHEMATIC DIAGRAM:MAIN-1 Unit H G F 7001GEFW E D C B A 1 2 3 8 4 5 6 7 8 9 10 11 9 12
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26SL71 29SL81 MODEL 29SL81 SCHEMATIC DIAGRAM:MAIN-2 Unit H G F E D C B A 1 2 3 10 4 5 6 7 8 9 10 11 11 12
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26SL71 29SL81 SCHEMATIC DIAGRAM: POWER Unit H G F E D C B A 1 2 3 4 12 5 6
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26SL71 29SL81 PRINTED WIRING BOARD ASSEMBLIES H G F E D C B A PWB-A: MAIN Unit (Wiring Side) 1 2 3 4 13 5 6
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26SL71 29SL81 H G F E D C B A PWB-A: MAIN Unit (Component Side) 1 2 3 4 14 5 6
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26SL71 29SL81 Ref. No. ★ Part No. Description PARTS LIST PWB-P : DUNTK9830WEV2 PARTS REPLACEMENT POWER UNIT Replacement parts which have these special safety characteristics identified in this manual; electrical components having such features are identified by å and shaded areas in the Replacement Parts Lists and Schematic Diagrams.
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26SL71 29SL81 COPYRIGHT © 2000 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. SHARP CORPORATION AV Systems Group Quality & Reliability Control Center Yaita, Tochigi 329-2193, Japan TQ0907-S Jun. 2000 Printed in Japan MI.
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26SL40, 26SL70 29SL80 SERVICE MANUAL S69J129SL80// COLOR TELEVISION Chassis No. SN-91A POWER POWER PUSH OPEN MTS STEREO MODELS 26SL40, 26SL70 29SL80 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. CONTENTS Page » ELECTRICAL SPECIFICATIONS .........................................................................................................
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26SL40, 26SL70 29SL80 IMPORTANT SERVICE SAFETY PRECAUTION Service work should be performed only by qualified service technicians who are throughly familiar with all safety checks and the servicing guidelines which follow: WARNING X-RADIATION AND HIGH VOLTAGE LIMITS 1. For continued safety, no modification of any circuit should be attempted. 2. Disconnect AC power before servicing. 3. Semiconductor heat sinks are potential shock hazards when the chassis is operating. 4.
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26SL40, 26SL70 29SL80 IMPORTANT SERVICE SAFETY PRECAUTION (Continued) • Connect the resistor connection to all exposed metal parts having a return to the chassis (antenna, metal cabinet, screw heads, knobs and control shafts, escutcheon and etc.) and measure the AC voltage drop across the resistor. AII checks must be repeated with the AC ine cord plug connection reversed. (If necessary, a nonpolarized adapter plug must be used only for the purpose of completing these check.
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26SL40, 26SL70 29SL80 LOCATION OF USER'S CONTROL Front Panel POWER POWER – VOL + CH MENU VIDEO/AUDIO IN 2 TERMINALS (VIDEO/AUDIO terminals are also provided on the rear.) VIDEO IN 2 L-AUDIO-R MTS STEREO POWER Press → On. Press again → Off. POWER – VOL + POWER SENSOR AREA FOR REMOTE CONTROL VOLUME UP/DOWN (+) Increases sound. (–) Decreases sound. CH MENU MENU Press → Accesses MAIN MENU. Press again → Exits MAIN MENU. CHANNEL UP/DOWN ( ) Selects next higher channel.
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26SL40, 26SL70 29SL80 INSTALLATION AND SERVICE INSTRUCTIONS Note: (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 HIGH VOLTAGE CHECK The receiver is protected by a 5.0A fuse (F5701), mounted on PWB-P, wired into one side of the AC line input.
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26SL40, 26SL70 29SL80 For adjustments of this model, the bus data is converted to various analog signals by the D/A converter circuit. Note: There are still a few analog adjustments in this series such as focus and master screen voltage. Follow the steps below whenever the service adjustment is required. See "Table-B" to determine, if service adjustments are required. 1. Service mode To enter the service mode and exit service mode.
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26SL40, 26SL70 29SL80 SERVICE NUMBER DATA ADJUSTMENT ITEM ADJUSTMENT CONTENTS RANGE INITIAL VALUE S01 S02 S03 S04 S05 S06 S07 S08 S09 S10 S11 S12 S13 S14 S15 S16 S17 S18 S19 S20 S21 S22 S23 OP. PICTURE TINT COLOR BRIGHTNESS SHARPNESS VERTICAL PHASE HORIZONTAL PHASE RF-AGC VERTICAL AMP PIF VCO R CUT-OFF G CUT -OFF B CUT-OFF G GAIN B GAIN TRAP BALANCE C.C. POSITION MUTE ENERGY SAVE OFFSET D.D.E.
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26SL40, 26SL70 29SL80 SERVICE ADJUSTMENT VCO Adjustment White Balance Adjustment 1. Connect a digital voltmeter between pin (44) of IC201 and ground. 2. Receive a good local channel. 3. Enter the service mode and select the service adjustment "S10". 4. Adjust the data so that digital voltmeter reads 2.2V. 5. Adjustment is completed, remove the voltmeter, return to "normal" mode. 1. Receive a good local channel. 2.
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26SL40, 26SL70 29SL80 Sub-Brightness Adjustment 3.58MHz Trap Adjustment 1. Receive a good local channel. 2. Make sure the customer brightness control is set to center position. 3. Enter the service mode and select the service adjustment "S04". 4. Adjust "S04" data value to obtain normal brightness level. 1. Receive a good local channel. 2. Enter the service mode and select the service adjustment "S16". 3. This is a two position adjustment, "00" is ON, "01" is OFF. 4.
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26SL40, 26SL70 29SL80 MTS ADJUSTMENT (Only for Models 26SL70, 29SL80) MTS Level Adjustment 1. Feed the following monaural signal to pin (14) of IC3001. Monaural signal : 300 Hz, 245 mVrms 2. Connect the rms voltmeter to pin (39) of IC3001. 3. Enter the service mode and select the service adjustment "M01". 4. Adjust the data so that the rms voltmeter reads 490 ± 10 mVrms. MTS VCO Adjustment 1. Keep the unit in no-signal state. 2. Connect the frequency counter to pin (39) of IC3001. 3.
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29SL80 only B 2 29SL80 only C 3 4 11 26SL70, 29SL80 only 26SL40, 26SL70 only 1 26SL70, 29SL80 only 26SL70, 29SL80 only (29SL80 only) 26SL40, 26SL70 29SL80 CHASSIS LAYOUT H G F E D A 5 6
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26SL40, 26SL70 29SL80 MODEL 26SL40 BLOCK DIAGRAM H G F E D C B A 1 2 3 4 12 5 6
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26SL40, 26SL70 29SL80 MODEL 26SL70 BLOCK DIAGRAM H G F E D C B A 1 2 3 4 13 5 6
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SL40, 26SL70 29SL80 MODEL 29SL80 BLOCK DIAGRAM H G F E D C B A 1 2 3 4 14 5 6
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26SL40, 26SL70 29SL80 DESCRIPTION OF SCHEMATIC DIAGRAM WAVEFORM MEASUREMENT CONDITIONS: 1. Photographs taken on a standard gated color bar signal, the tint setting adjusted for proper color. The wave shapes at the red, green and blue cathodes of the picture tube depend on the tint, color level and picture control. 2. indicates waveform check points (See chart, waveforms are measured from point indicated to chassis ground.) NOTES: H 1. The unit of resistance "ohm" is omitted. (K=kΩ=1000Ω, M=MΩ) 2.
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26SL40, 26SL70 29SL80 MODEL 26SL40 SCHEMATIC DIAGRAM: MAIN-1 Unit H G F E D C B A 1 2 3 4 5 6 16 7 8 9 10
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26SL40, 26SL70 29SL80 7001GEFW 10 11 12 13 14 15 17 16 17 18 19
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26SL40, 26SL70 29SL80 MODEL 26SL40 SCHEMATIC DIAGRAM: MAIN-2 Unit H G F E D C B A 1 2 3 4 5 6 18 7 8 9 10
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26SL40, 26SL70 29SL80 10 11 12 13 14 15 19 16 17 18 19
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26SL40, 26SL70 29SL80 MODEL 26SL70 SCHEMATIC DIAGRAM: MAIN-1 Unit H G F E D C B A 1 2 3 4 5 6 20 7 8 9 10
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26SL40, 26SL70 29SL80 7001GEFW 10 11 12 13 14 15 21 16 17 18 19
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26SL40, 26SL70 29SL80 MODEL 26SL70 SCHEMATIC DIAGRAM: MAIN-2 Unit H G F E D C B A 1 2 3 4 5 6 22 7 8 9 10
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26SL40, 26SL70 29SL80 10 11 12 13 14 15 23 16 17 18 19
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26SL40, 26SL70 29SL80 MODEL 29SL80 SCHEMATIC DIAGRAM: MAIN-1 Unit H G F E D C B A 1 2 3 4 5 6 24 7 8 9 10
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26SL40, 26SL70 29SL80 7001GEFW 10 11 12 13 14 15 25 16 17 18 19
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26SL40, 26SL70 29SL80 MODEL 29SL80 SCHEMATIC DIAGRAM: MAIN-2 Unit H G F E D C B A 1 2 3 4 5 6 26 7 8 9 10
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26SL40, 26SL70 29SL80 10 11 12 13 14 15 27 16 17 18 19
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26SL40, 26SL70 29SL80 SCHEMATIC DIAGRAM: CRT Unit H G A63AFW32X (26SL40/70) A68KRQ58X (29SL80) F E D C B A 1 2 3 4 28 5 6
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26SL40, 26SL70 29SL80 SCHEMATIC DIAGRAM: FRONT AV Unit H MODEL 26SL40 G F E D MODELS 26SL70, 29SL80 C B A 1 2 3 4 29 5 6
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26SL40, 26SL70 29SL80 MODEL 26SL40 SCHEMATIC DIAGRAM: POWER Unit H G F E D C B A 1 2 3 4 30 5 6
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26SL40, 26SL70 29SL80 MODEL 26SL70, 29SL80 SCHEMATIC DIAGRAM: POWER Unit H G F E D C B A 1 2 3 4 31 5 6
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26SL40, 26SL70 29SL80 MODEL 29SL80 SCHEMATIC DIAGRAM: Y/C Unit H G F E D C B A 1 2 3 4 32 5 6
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26SL40, 26SL70 29SL80 PRINTED WIRING BOARD ASSEMBLIES H G F E D C B A PWB-P: POWER Unit (Wiring Side) 1 2 3 4 33 5 6
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26SL40, 26SL70 29SL80 H G F E D C B PWB-A: MAIN Unit (Wiring Side) A 1 2 3 4 34 5 6
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26SL40, 26SL70 29SL80 H G F E D C B PWB-A: MAIN Unit (Chip Parts Side) A 1 2 3 4 35 5 6
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26SL40, 26SL70 29SL80 H G PWB-B: CRT Unit (Wiring Side) F E D PWB-K: Y/C Unit (Wiring Side) (only for 29SL80) C B A PWB-K: Y/C Unit (Chip Parts Side) PWB-F: Front AV Unit (Wiring Side) 1 2 (only for 29SL80) 3 4 36 5 6
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26SL40, 26SL70 29SL80 Ref. No. Part No. ★ Description PARTS LIST Code Ref. No. PARTS REPLACEMENT "HOW TO ORDER REPLACEMENT PARTS" 3. PART NO. 4. DESCRIPTION J KA78S05P J TA1268AN J TA8403K (26SL40, 26SL70) å IC501 VHiTA8427K/-1 J TA8427K (29SL80) å IC701 VHiSTRF66561E X STRF6656 å IC702 RH-FX0034CEZZ J PC817 å IC703 VHiSE120N//-1 J SE120N å IC751 VHiKA7809Pi-1 J KA7809PI IC951 VHiMM1111XF1E J MM1111XF (26SL70) IC951 VHiMM1113XF1E J MM1113XF (29SL80) IC2001 RH-iX3256CEZZ J I.C.
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26SL40, 26SL70 29SL80 Ref. No. Part No. ★ Description Code Ref. No. PWB-A: DUNTK9806WEV0 (26SL40) PWB-A: DUNTK9806WEV1 (26SL70) PWB-A: DUNTK9806WEV2 (29SL80) MAIN UNIT (Continued) D402 D402 RH-EX0601GEZZ J Zener Diode, 3.6V (29SL80) RH-EX0604GEZZ J Zener Diode, 3.9V (26SL40, 26SL70) D454 RH-EX0611GEZZ J Zener Diode, 5.
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26SL40, 26SL70 29SL80 Ref. No. Part No. ★ Description Code Ref. No.
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26SL40, 26SL70 29SL80 Ref. No. Part No. ★ Description Code Ref. No.
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26SL40, 26SL70 29SL80 Ref. No. Part No. ★ Description Code Ref. No.
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26SL40, 26SL70 29SL80 Ref. No. Part No. ★ Description Code Ref. No.
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26SL40, 26SL70 29SL80 Ref. No. ★ Part No. Description Code Ref. No. CRT UNIT TRANSISTORS Q853 Q854 Q855 Q856 Q881 VS2SC3198-Y-1 VS2SC3789//2E or VS2SC3619LB-1 VS2SC3198-Y-1 or VS2SC3619LB-1 VS2SC3789//2E VS2SC3198-Y-1 VS2SC3789//2E or VS2SC3619LB-1 VS2SA1266-Y-1 J 2SC3198(Y) J 2SC3789 AA AF CAPACITOR J 2SC3198(Y) AA J 2SC3789 J 2SC3198(Y) J 2SC3789 AF AA AF J 2SA1266(Y) AA [EL.··· Electrolytic] C4601 VCEA0A1HW475M J 4.7 50V AB CAPACITORS C883 [EL.
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26SL40, 26SL70 29SL80 Ref. No. ★ Part No. Description Ref. No.
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26SL40, 26SL70 29SL80 Ref. No. ★ Part No. Description Code Ref. No.
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26SL40, 26SL70 29SL80 Ref. No. Part No. ★ Description Code Ref. No. MISCELLANEOUS PARTS å ACC701 QACCZ3008PEZZ R AC Cord QCNW-0101GJZZ X Connecting Cord (29SL80) QCNW-0102GJZZ X Connecting Cord QCNW-0103GJZZ X Connecting Cord QCNW-0106GJZZ X Connecting Cord QCNW-0107GJZZ X Connecting Cord QCNW-0108GJZZ X Connecting Cord QCNW-0109GJZZ X Connecting Cord (26SL40, 26SL70) SP1 VSP1206PB378E X Speaker 8 ohm (L) SP2 VSP1206PB378E X Speaker 8 ohm (R) Part No.
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26SL40, 26SL70 29SL80 Ref. No. Part No. ★ ★ Description Code No. Part No. PACKING OFRef.THE SET Description ★ Polyethylene Bag Operation Manual Registration Card Infrared R/C Unit ★ Batteries ★ Wrapping Paper ★ Buffer Material FRONT ★ Packing Case The packing case top is tape-sealed. REAR Use 12 staples to fix the bottom side of packing case. ★ MARK : Not replacement items.
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26SL40, 26SL70 29SL80 Ref. No. Part No. ★ Description 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.