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Sharp 14SL30 Service Manual

Chassis no. sn-90a(14"), chassis no. sn-80a(21")
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VIDEO
IN
AUDIO
POWER
-
VOL
+
CH
MENU
POWER
14SL30
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 ......................................................................................................... 1
» IMPORTANT SERVICE SAFETY PRECAUTION ................................................................................ 2
» LOCATION OF USER'S CONTROL ..................................................................................................... 4
» INSTALLATION AND SERVICE INSTRUCTIONS ............................................................................... 5
» CHASSIS LAYOUT .............................................................................................................................11
» BLOCK DIAGRAM ............................................................................................................................. 13
» SCHEMATIC DIAGRAMS .................................................................................................................. 16
» PRINTED WIRING BOARD ASSEMBLIES ........................................................................................ 28
» REPLACEMENT PARTS LIST ........................................................................................................... 31
» PACKING OF THE SET ..................................................................................................................... 43
POWER INPUT ..................................... 110 - 220 V AC 50/60 Hz
POWER RATING
14SL30 ................................................................................ 65 W
21SL40 ................................................................................ 91 W
21SL70 ................................................................................ 96 W
PICTURE SIZE
14SL30 ....................................................... 580cm
21SL40, 21SL70 ...................................... 1,240cm
CONVERGENCE ............................................................. Magnetic
SWEEP DEFLECTION ..................................................... Magnetic
FOCUS ............................................... Hi-Bi-Potential Electrostatic
INTERMEDIATE FREQUENCIES
Picture IF Carrier Frequency ..................................... 45.75 MHz
Sound IF Carrier Frequency ...................................... 41.25 MHz
Color Sub-Carrier Frequency ..................................... 42.17 MHz
AUDIO POWER OUTPUT RATING
14SL30 ..................................... 1.3W + 1.3W (at 10% distortion)
21SL40 ..................................... 2.0W + 2.0W (at 10% distortion)
21SL70 ..................................... 4.0W + 4.0W (at 10% distortion)
SERVICE MANUAL
VIDEO
IN
L-AUDIO-R
POWER
POWER
- VOL +
CH
- VOL +
21SL40, 21SL70
MODELS
CONTENTS

ELECTRICAL SPECIFICATIONS

SPEAKER
2
(89,9sq inch)
ANTENNA INPUT IMPEDANCE
2
(192sq inch)
TUNING RANGES
(Nominal)
SHARP CORPORATION
1
COLOR TELEVISION
Chassis No. SN-90A(14")
Chassis No. SN-80A(21")
14SL30
21SL40, 21SL70
SIZE
14SL30 ...................................................................... 9 x 5 cm
21SL40, 21SL70 ...................................................... 12 x 6 cm
VOICE COIL IMPEDANCE
14SL30 .......................................................... 8 ohm at 400 Hz
21SL40, 21SL70 ........................................... 6 ohm at 400 Hz
VHF/UHF .................................................... 75 ohm Unbalanced
VHF-Channels .............................................................. 2 thru 13
UHF-Channels ............................................................ 14 thru 69
CATV Channels .......................................................... 1 thru 125
Specifications are subject to change without
prior notice.
14SL30
21SL40, 21SL70
S89N421SL40//
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Summary of Contents for Sharp 14SL30

  • Page 1: Table Of Contents

    Color Sub-Carrier Frequency ........42.17 MHz (Nominal) AUDIO POWER OUTPUT RATING Specifications are subject to change without 14SL30 ........1.3W + 1.3W (at 10% distortion) prior notice. 21SL40 ........2.0W + 2.0W (at 10% distortion) 21SL70 ........4.0W + 4.0W (at 10% distortion)

  • Page 2: Important Service Safety Precaution

    14SL30 21SL40, 21SL70 IMPORTANT SERVICE SAFETY PRECAUTION Service work should be performed only by qualified service technicians who are thoroughly 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 1.
  • Page 3 14SL30 21SL40, 21SL70 IMPORTANT SERVICE SAFETY PRECAUTION (Continued) • Connect the resistor connection to all exposed metal BEFORE RETURNING THE RECEIVER parts having a return to the chassis (antenna, metal (Fire & Shock Hazard) cabinet, screw heads, knobs and control shafts, escutcheon, etc.) and measure the AC voltage drop...

  • Page 4: Location Of User's Control

    14SL30 21SL40, 21SL70 LOCATION OF USER'S CONTROL Front Panel VIDEO/AUDIO TERMINALS (VIDEO/AUDIO terminals are also VIDEO L-AUDIO-R POWER POWER – VOL + MENU provided on the rear.) SENSOR AREA FOR REMOTE CONTROL POWER POWER – VOL + MENU MENU Press → Accesses MAIN MENU.

  • Page 5: Installation And Service Instructions

    1. Apply 110-220V AC using a variac transformer for 4. The voltage should be approximately, 24.0kV accurate input voltage. (14SL30) / 27.0kV (21SL40/70) (at zero beam). 2. Allow for warm up and adjust all customer controls If a correct reading cannot be obtained, check circuitry for normal picture and sound.
  • Page 6 14SL30 21SL40, 21SL70 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.
  • Page 7 Must be set to "03" OSD SETUP 00-03 Must be set to "02" TUNER SETUP 00-01 Must be set to "00" OPTION 00-FF Must be set to "02" (14SL30, 21SL40) / "16" (21SL70) MTS LEVEL 00-F STERO-VCO 00-3F FILTER 00-3F 21SL70 only LOW SEPARATION...
  • Page 8 14SL30 21SL40, 21SL70 Ë SERVICE ADJUSTMENT VCO Adjustment White Balance Adjustment 1. Connect a digital voltmeter between pin (44) of IC201 1. Receive a good local channel. and ground. 2. Enter the service mode and select the service 2. Receive a good local channel.
  • Page 9 Caption Position Adjustment (Horizontal) 8. Adjust data value to "00". » Option Adjustment 1. Receive a good local channel. 9. Adjust data value to "02" (14SL30, 21SL40)/"16" 2. Enter the service mode and select the service (21SL70). adjustment "S18". 3. A black text box appears on the screen. (see Figure B below) 4.
  • Page 10 14SL30 21SL40, 21SL70 Ë MTS ADJUSTMENT (Only for21SL70) MTS Level Adjustment 1. Feed the following monaural signal to pin (14) of IC3001. Monaural signal : 300Hz, 245mVrms 2. Connect the rms voltmeter to pin (39) of IC3001. 3. Enter the service mode and select the service adjustment "M01".

  • Page 11: Chassis Layout

    14SL30 21SL40, 21SL70 MODEL 14SL30 CHASSIS LAYOUT PWB-B PWB-C PWB-A...
  • Page 12 14SL30 21SL40, 21SL70 MODELS 21SL40, 21SL70 CHASSIS LAYOUT PWB-B PWB-C PWB-A...

  • Page 13: Block Diagram

    14SL30 21SL40, 21SL70 MODEL 14SL30 BLOCK DIAGRAM...
  • Page 14 14SL30 21SL40, 21SL70 MODEL 21SL40 BLOCK DIAGRAM...
  • Page 15 14SL30 21SL40, 21SL70 MODEL 21SL70 BLOCK DIAGRAM...

  • Page 16: Schematic Diagrams

    14SL30 21SL40, 21SL70 DESCRIPTION OF SCHEMATIC DIAGRAM WAVEFORM MEASUREMENT CONDITIONS: NOTES: 1. Photographs taken on a standard gated color bar 1. The unit of resistance "ohm" is omitted. (K=k Ω =1000 Ω , M=M Ω ) signal, the tint setting adjusted for proper color. The wave shapes at the red, green and blue cathodes of 2.
  • Page 17 14SL30 21SL40, 21SL70 SCHEMATIC DIAGRAM: CRT Unit Ë 14SL30 Ë 21SL40/70...
  • Page 18 14SL30 21SL40, 21SL70 MODEL 14SL30 SCHEMATIC DIAGRAM: MAIN-1 Unit...
  • Page 19 14SL30 21SL40, 21SL70...
  • Page 20 14SL30 21SL40, 21SL70 MODEL 21SL70 SCHEMATIC DIAGRAM: MAIN-1 Unit...
  • Page 21 14SL30 21SL40, 21SL70...
  • Page 22 14SL30 21SL40, 21SL70 MODEL 21SL70 SCHEMATIC DIAGRAM: MAIN-2 Unit...
  • Page 23 14SL30 21SL40, 21SL70...
  • Page 24 14SL30 21SL40, 21SL70 MODEL 21SL40 SCHEMATIC DIAGRAM: MAIN-1 Unit TU51 COMBI- VTU115B8035AH VCEA0A1HW475M VCEA0A1CW477M RH-EX0611GEZZ VRS-VV3AB331J VRS-VV3DB470J VRS-CY1JF392J NATION VTU115B8025AM VCEA0A1HW225M VCEAGA1CW108M Not Used VRS-VV3DB151J VRD-RA2BE1R0J VRS-CY1JF103J...
  • Page 25 14SL30 21SL40, 21SL70...
  • Page 26 14SL30 21SL40, 21SL70 MODEL 21SL40 SCHEMATIC DIAGRAM: MAIN-2 Unit...
  • Page 27 14SL30 21SL40, 21SL70 SCHEMATIC DIAGRAM: FRONT AV Unit Ë 14SL30 Ë 21SL40 Ë 21SL70...

  • Page 28: Printed Wiring Board Assemblies

    14SL30 21SL40, 21SL70 PRINTED WIRING BOARD ASSEMBLIES PWB-A: MAIN Unit (Wiring Side)
  • Page 29 14SL30 21SL40, 21SL70 PWB-A: MAIN Unit (Chip Parts Side)
  • Page 30 14SL30 21SL40, 21SL70 PWB-B: CRT Unit (Wiring Side) PWB-C: FRONT AV Unit (Wiring Side)

  • Page 31: Replacement Parts List

    14SL30 21SL40, 21SL70 PARTS LIST Ref. No. Part No. Description Code Ref. No. Part No. Description Code PRINTED WIRING BOARD ASSEMBLIES PARTS REPLACEMENT (NOT REPLACEMENT ITEM) Replacement parts which have these special safety characteristics identified in this manual; electrical components having such features 14SL30 å...
  • Page 32 14SL30 21SL40, 21SL70 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTK9882WEV1 (21SL40) RCiLi0605CEZZ MAIN UNIT (Continued) L401 VP-XF6R8K0000 J Peaking 6.8µH L402 VP-XF3R3K0000 J Peaking 3.3µH Q753 VS2SC3198-Y-1 J 2SC3198(Y) L403 VP-XF100K0000 J Peaking 10µH...
  • Page 33 14SL30 21SL40, 21SL70 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTK9882WEV1 (21SL40) C754 VCEAGA1EW108M J 1000 25V C755 VCKYPA2HB102K J 1000p 500V Ceramic MAIN UNIT (Continued) C756 VCKYD41HB102K J 1000p 50V Ceramic C757 VCEA4W2CN227M J 220 160V EL.
  • Page 34 14SL30 21SL40, 21SL70 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTK9882WEV1 (21SL40) R704 VRW-KP3HC100J J 10 Cement å R705 VRD-RA2BE122J J 1.2k 1/8W Carbon MAIN UNIT (Continued) R706 VRD-RM2HD152J J 1.5k 1/2W Carbon R707...
  • Page 35 21SL40, 21SL70 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTK9882WEV0 (14SL30) PWB-A: DUNTK9882WEV1 (21SL40) PWB-A: DUNTK9882WEV2 (21SL70) MAIN UNIT (Continued) MAIN UNIT R2070 VRS-CY1JF103J J 10k 1/16W M-Ox. TUNER R2101 VRS-CY1JF101J J 100 1/16W M-Ox.
  • Page 36 14SL30 21SL40, 21SL70 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTK9882WEV0 (14SL30) L751 RCiLP0225CEZZ J Coil PWB-A: DUNTK9882WEV2 (21SL70) L2040 RCiLB0159CEZZ J Oscillation Coil MAIN UNIT (Continued) TRANSFORMERS D661 RH-DX0444CEZZ J Diode å å...
  • Page 37 14SL30 21SL40, 21SL70 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTK9882WEV0 (14SL30) C730 RC-KZ0155CEZZ J 680p 4kV Ceramic å PWB-A: DUNTK9882WEV2 (21SL70) RC-KZ0156CEZZ 3300p 4kV MAIN UNIT (Continued) C751 VCEA0A1CW107M J 100 C517 VCKYPA1HB102K...
  • Page 38 14SL30 21SL40, 21SL70 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTK9882WEV0 (14SL30) R208 VRS-CY1JF391J J 390 1/16W M-Ox. PWB-A: DUNTK9882WEV2 (21SL70) R301 VRD-RA2BE222J J 2.2k 1/8W Carbon R302 VRS-CY1JF102J J 1.0k 1/16W M-Ox. MAIN UNIT (Continued)
  • Page 39 14SL30 21SL40, 21SL70 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTK9882WEV0 (14SL30) R804 VRS-CY1JF182J J 1.8k 1/16W M-Ox. PWB-A: DUNTK9882WEV2 (21SL70) (14SL30) R804 VRS-CY1JF222J J 2.2k 1/16W M-Ox. MAIN UNIT (Continued) (21SL70) R524 VRS-CY1JF332J J 3.3k 1/16W M-Ox.
  • Page 40 R2060 VRD-RA2BE221J J 220 1/8W Carbon FH702 QFSHD1014CEZZ J Fuse Holder R2061 VRS-CY1JF562J J 5.6k 1/16W M-Ox. P302 QPLGN0461CEZZ J Plug, 4-pin (S) (14SL30) R2062 VRS-CY1JF183J J 18k 1/16W M-Ox. P401 QPLGN0561CEZZ J Plug, 5-pin (GBN) R2063 VRD-RA2BE222J J 2.2k 1/8W...
  • Page 41 J 560 1/8W Carbon R884 VRD-RA2BE152J J 1.5k 1/8W Carbon R885 VRD-RA2BE470J J 47 1/8W Carbon MISCELLANEOUS PARTS P851 QPLGN0561CEZZ J Plug, 5-pin (GBN) P852 QPLGN0461CEZZ J Plug, 4-pin (YBN) SC851 QSOCV0842CEZZ J CRT Socket (14SL30) SC851 QSOCV0933CEZZ J CRT Socket (21SL40/70)
  • Page 42 QCNW-1963PEZZ R Connecting Cord (21SL70) AG CCABA0106WEH0 X Front Cabinet Ass'y QCNW-1964PEZZ R Connecting Cord (21SL40) (21SL40/70) CCABA0102WEH0 X Front Cabinet Ass'y QCNW-2105PEZZ R Connecting Cord (14SL30) AF (21SL70) QCNW-2106PEZZ R Connecting Cord (14SL30) AE Not Available – Front Cabinet —...

  • Page 43: Packing Of The Set

    14SL30 21SL40, 21SL70 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PACKING OF THE SET Polyethylene Bag Operation Manual Infrared R/C Unit Dipole Antenna AC. PLG Adapter Antenna Adapter Wrapping Sheet Batteries Buffer Material FRONT Packing Case...
  • Page 44 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.

This manual is also suitable for:

21sl7021sl40

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