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Sharp 32SF670 Service Manual

Color television
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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 ......................................................................................................... 1
» IMPORTANT SERVICE SAFETY PRECAUTION ................................................................................. 2
» LOCATION OF USER'S CONTROL ..................................................................................................... 5
» INSTALLATION AND SERVICE INSTRUCTIONS ................................................................................ 6
» SERVICE ADJUSTMENT ................................................................................................................... 16
» CHASSIS LAYOUT ............................................................................................................................. 20
» BLOCK DIAGRAM .............................................................................................................................. 21
» DESCRIPTION OF SCHEMATIC DIAGRAMS & WAVEFORMS ........................................................ 22
» SCHEMATIC DIAGRAMS ................................................................................................................... 23
» PRINTED WIRING BOARD ASSEMBLIES ........................................................................................ 32
» PARTS LIST ........................................................................................................................................ 38
» PACKING OF THE SET ...................................................................................................................... 47
POWER INPUT ..................................................... 120V AC, 60 Hz
POWER RATING .................................................................. 150W
PICTURE SIZE ........................................... 3074 cm
CONVERGENCE ............................................................. Magnetic
SWEEP DEFLECTION .................................................... Magnetic
FOCUS ............................................... Hi-Bi-Potential Electrostatic
INTERMEDIATE FREQUENCIES
Picture IF Carrier Frequency ...... 45.75 MHz (Analog Terrestrial)
Sound IF Carrier Frequency ....... 41.25 MHz (Analog Terrestrial)
Color Sub-Carrier Frequency ..... 42.17 MHz (Analog Terrestrial)
IF Center Frequency ........................ 44 MHz (Digital Terrestrial)
AUDIO POWER
OUTPUT RATING .............. 5.0W + 5.0W (at 10% distortion and

SERVICE MANUAL

MODEL
CONTENTS

ELECTRICAL SPECIFICATIONS

SPEAKER
SIZE ........................................................ 12 x 6 cm oval (2 pcs.)
2
(476sq inch)
VOICE COIL IMPEDANCE ............................... 8 ohm at 400 Hz
ANTENNA INPUT IMPEDANCE
VHF/UHF ..................................................... 75 ohm Unbalanced
TUNING RANGES
VHF-Channels ............................................................... 2 thru 13
UHF-Channels ............................................................ 14 thru 69
CATV Channels ............................................ 1 thru 125 (Analog)
CATV Channels ............................................. 1 thru 135 (Digital)
Digital Terrestrial Broadcast (VHF/UHF) ....................... 2 thru 69
(Nominal)
Specifications are subject to change without
Dual CH Operate)
prior notice.
This document has been published to be used for after
sales service only.
The contents are subject to change without notice.
No.S47E632SF670/
COLOR TELEVISION
Chassis No. GB-D7
32SF670
(EIA, Channel Plan U.S.A.)
32SF670
Page

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Summary of Contents for Sharp 32SF670

  • Page 1: Table Of Contents

    32SF670 SERVICE MANUAL No.S47E632SF670/ COLOR TELEVISION Chassis No. GB-D7 32SF670 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: Important Service Safety Precaution

    32SF670 IMPORTANT SERVICE SAFETY PRECAUTION Ë 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: Safety Notice

    32SF670 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 Before returning the receiver to the user, perform across the resistor.
  • Page 4 32SF670 Precautions for using lead-free solder 1 Employing lead-free solder "PWBs" of this model employs lead-free solder. The LF symbol indicates lead-free solder, and is attached on the PWBs and service manuals. The alphabetical character following LF shows the type of lead-free solder.

  • Page 5: Location Of User's Control

    32SF670 LOCATION OF USER'S CONTROL Front Panel POWER MENU – VOL + PULL-OPEN VIDEO/AUDIO IN 2 TERMINALS POWER MENU – VOL + (INSIDE DOOR) POWER Press → On. Press again → Off. REMOTE CONTROL SENSOR MENU Press → Accesses MAIN MENU.

  • Page 6: Installation And Service Instructions

    32SF670 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. HIGH VOLTAGE CHECK...
  • Page 7 32SF670 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 serv- ice adjustments are required.
  • Page 8 32SF670 A. Deflection Bus Setting Revision Item. DATA Range Remark / Change V-SHIFT V-SHIFT 0 … 7 [13h D2…D0] H-PHASE H-SHIFT 0 … 31 H-PHASE.DTV [16h D4…D0] µ-con V-POS-4:3 0 … 255 V-PHASE.DTV V-SIZE V-SIZE-4:3 0 … 63 V-SIZE.DTV [11h D5…D0]...
  • Page 9 32SF670 Revision Item. DATA Range Remark / Change AFC1 Gain AFC1-IF 0 / 1 [27h D6] AFC2-G AFC2 0 / 1 [15h D6] V-FREE V-FREE 0 / 1 [10h D6] H-FREE H-FREE 0 / 1 [13h D7] HV-FREE HV-FREE 0 / 1 [25h D5] V.Window...
  • Page 10 32SF670 B. Video Bus Setting Revision Item. DATA Range Remark / Change CONTRAST SUB-CON 0 … 127 PIC.DTV [05h D6…D0] TINT SUB-TINT 0 … 127 TINT.DTV [07h D6…D0] COLOR SUB-COL 0 … 127 COLOR.DTV [08h D6…D0] BRIGHT SUB-BRI 0 … 255 PIC.DTV...
  • Page 11 32SF670 Revision Item. DATA Range Remark / Change VIDEO TONE SUB-SHP-DTV 0 … 63 [04h D5…D0] R-CUTOFF R-CUT-DTV 0 … 255 WHITE.DTV [0Dh D7…D0] G-CUTOFF G-CUT-DTV 0 … 255 WHITE.DTV [0Eh D7…D0] B-CUTOFF B-CUT-DTV 0 … 255 WHITE.DTV [0Fh D7…D0]...
  • Page 12 32SF670 Revision Item. DATA Range Remark / Change R-DRI(OFFSET) R-R2 -32 … +32 [0Bh D6…D0] R-DRI(OFFSET) -32 … +32 [0Bh D6…D0] R-DRI(OFFSET) -32 … +32 [0Bh D6…D0] B-DRI(OFFSET) B-R2 -32 … +32 [0Ch D6…D0] B-DRI(OFFSET) -32 … +32 [0Ch D6…D0] B-DRI(OFFSET) -32 …...
  • Page 13 32SF670 Revision Item. DATA Range Remark / Change BRIGHT(OFFSET) BRI-OFF-16:9 -15 … +15 [0Ah D7…D0] TRAP-FINE TRAP-FINE-TV-AV 0…3 [12h D1…D0] C-TRAP OFF TRAP-TV-AV 0 / 1 [02h D4] V-TONE SHPG-AV 0 / 1 [02h D3] V-TONE SHPG-SAV 0 / 1...
  • Page 14 32SF670 Revision Item. DATA Range Remark / Change OSD LEVEL OSD-LVL 0 / 1 [15h D5] YSW-LPF V100 YLPF 0 / 1 [13h D5] C.Clip Level V101 C.Clip Level 0 / 1 [02h D5] S-TRAP V102 S-TRAP 0 … 31 [20h D7] [1Fh D7…D5]...
  • Page 15 32SF670 C. Sound Bus Setting Revision / Item. DATA Range Remark Change MTS-ATT 0 … 15 MS.DTV [00h D3..D0] MTS-VCO 0 … 63 [01h D5..D0] FILTER MTS-FILT 0 … 63 [02h D5..D0] WIDEBAND MTS-WBND 0 … 63 SEPA.DTV [04h D5..D0]...

  • Page 16: Service Adjustment

    32SF670 Holding down both the VOL-up and CH-up buttons on the TV set at service mode for more than 2 seconds will automatically write the above initial values into IC2101. ADJUSTMENT PART REPLACED NOTES NECESSARY UNNECESSARY The adjustment is needed to compensate for characteristics of parts IC801 including IC801 and MTS level (M01).
  • Page 17 32SF670 Sub-picture and Sub-Bright Adjustments Sub-Color Adjustment 1. Receive the window pattern signal. 1. Receive a good local channel. • RF INPUT (TU1101) 2. Make sure the customer color control is set to center 2. Get into service adjustment data "V01" and "V04"...

  • Page 18: Mts Adjustment

    32SF670 Ë MTS ADJUSTMENT Vertical Phase Adjustment (SCREEN FORMAT 4:3) 1. Enter the service mode and input data of “00” on MTS Level Adjustment "D01". 1. Set the sound volume above 1. 2. Adjust "D03" data value so that picture is centered.
  • Page 19 32SF670 - M E M O -...

  • Page 20: Chassis Layout

    32SF670 CHASSIS LAYOUT...

  • Page 21: Block Diagram

    32SF670 BLOCK DIAGRAM...

  • Page 22: Description Of Schematic Diagrams & Waveforms

    32SF670 DESCRIPTION OF SCHEMATIC DIAGRAMS WAVEFORM MEASUREMENT CONDITIONS: NOTES: 1. Photographs taken on a standard gated color bar 1. The unit of resistance "ohm" is omitted. signal, the tint setting adjusted for proper color. The (K=kW=1000W, M=MW) wave shapes at the red, green and blue cathodes of 2.

  • Page 23: Schematic Diagrams

    32SF670 SCHEMATIC DIAGRAM: CRT Unit...
  • Page 24 32SF670 SCHEMATIC DIAGRAM: MAIN-1 Unit...
  • Page 25 32SF670...
  • Page 26 32SF670 SCHEMATIC DIAGRAM: MAIN-2 Unit...
  • Page 27 32SF670...
  • Page 28 32SF670 SCHEMATIC DIAGRAM: 2-LINE Y/C Unit...
  • Page 29 32SF670...
  • Page 30 32SF670 SCHEMATIC DIAGRAM: CONTROL Unit...
  • Page 31 32SF670...

  • Page 32: Printed Wiring Board Assemblies

    32SF670 PRINTED WIRING BOARD ASSEMBLIES PWB-A: MAIN Unit (Wiring Components Side)
  • Page 33 32SF670...
  • Page 34 32SF670 PWB-A: MAIN Unit (Components side)
  • Page 35 32SF670...
  • Page 36 32SF670 PWB-B: CRT Unit (Wiring Side) PWB-D: 2-LINE Y/C Unit (Wiring Side) PWB-D: 2-LINE Y/C Unit (Chip Parts Side)
  • Page 37 32SF670 PWB-F: CONTROL Unit (Wiring Side)

  • Page 38: Parts List

    å IC702 RH-FXA003WJZZ J PC123Y82 IC751 VHIPQ090DNA-1Y J PQ090DNA1ZPH in USA: Contact your nearest SHARP Parts Distributor to order. For IC752 VHIBA50B0WP-1Y J BA50BC0WFP-E2 location of SHARP Parts Distributor, Please call Toll-Free; 1- IC801 RH-IXB945WJQZQ X 800-BE-SHARP IC900 VHICXA2089Q-2Y X CXA2089Q-T6...
  • Page 39 32SF670 Ref. No. Part No. Description Code Ref. No. Part No. Description Code DIODES TRANSFORMERS D301 RH-EX0611GEZZY J Zener Diode MTZJT-725.1A AA T601 RTRNZ0057PEZZ J Transformer å D302 VHDHSS4148+-1Y J HSS4148TA-E T602 RTRNFA106WJZZ X H-Volt Transformer çå D303 VHDHSS4148+-1Y J HSS4148TA-E å...
  • Page 40 32SF670 Ref. No. Part No. Description Code Ref. No. Part No. Description Code C681 VCFPFA2EB394J J 0.39 250V Metalized Polypro Film AD C845 VCKYCY1HB221KY J 220p 50V Ceramic C682 VCKYPA2HB102K+ J 1000p 500V Ceramic C846 VCKYCY1CF105ZY J 1 16V Ceramic C685 VCKYCY1CB333KY J 0.033 16V Ceramic...
  • Page 41 32SF670 Ref. No. Part No. Description Code Ref. No. Part No. Description Code RJ77 VRS-CY1JF000JY J 0 1/16W Metal Oxide C3003 VCKYCY1EB123KY J 0.012 25V Ceramic RJ78 VRS-CY1JF000JY J 0 1/16W Metal Oxide C3004 VCEA0A1HW105M+J 1 50V Electrolytic RJ79 VRS-CY1JF000JY J 0 1/16W Metal Oxide C3005 VCEA0A1HW475M+J 4.7 50V Electrolytic...
  • Page 42 32SF670 Ref. No. Part No. Description Code Ref. No. Part No. Description Code R532 VRS-CY1JF473JY J 47k 1/16W Metal Oxide R770 VRS-CY1JF124JY J 120k 1/16W Metal Oxide R533 VRS-CY1JF103FY J 10k 1/16W Metal Oxide R771 VRS-CY1JF472FY J 4.7k 1/16W Metal Oxide...
  • Page 43 32SF670 Ref. No. Part No. Description Code Ref. No. Part No. Description Code R943 VRD-RA2BE101JY J 100 1/8W Carbon R2504 VRS-CY1JF103JY J 10k 1/16W Metal Oxide R944 VRS-CY1JF223JY J 22k 1/16W Metal Oxide R2509 VRS-CY1JF000JY J 0 1/16W Metal Oxide...
  • Page 44 32SF670 Ref. No. Part No. Description Code Ref. No. Part No. Description Code HM632 LX-GZ3002PEZZ J Screw D1506 RH-DX0487CEZZY J Zener Diode 1SR153-400T-31 AC å HM634 LX-GZ3002PEZZ J Screw D1507 RH-DX0487CEZZY J Zener Diode 1SR153-400T-31 AC å HM635 LX-GZ3001PEZZ J Screw...
  • Page 45 32SF670 Ref. No. Part No. Description Code Ref. No. Part No. Description Code MISCELLANEOUS PARTS SC850 QSOCV1011CEZZ J Socket 12pin CRDAR0248WE37 X P1401 QPLGZ0810CEZZ J Plug 8pin CRDAR5072WE86 X CRDAR5072WE87 X LX-BZ3100CEF7 J Screw LX-BZ3100CEF7 J Screw DUNTKB207WEA5 LX-BZ3100CEF7 J Screw...

  • Page 46: Packing Parts

    — TINS-C820WJZZ X Operation Manual Not Available – Door — TGAN-A216WJN1 X Guarantee Card HBDGB3141CESA J SHARP Badge HDECQ0104GJKA X Decoration Plate HDECQ0105GJSA X R/C Cover HINDPC204WJSA X Indication Plate JBTN-0128GJKA X Control Button JBTN-0129GJKA X Power Button GCABBA707WJKA X Rear Cabinet Assembly Not Available –...

  • Page 47: Packing Of The Set

    32SF670 PACKING OF THE SET FRONT Use tape to fix the top side of packing case. REAR Use 12 staples to fix the bottom side of packing case.
  • Page 48 32SF670 COPYRIGHT © 2007 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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