Sharp 32C230 Service Manual
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Sharp 32C230 Service Manual

Sharp 32C230 Service Manual

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Download this manual See also: Operating Manual
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
» SERVICE ADJUSTMENT ................................................................................................................... 10
» WAVEFORMS ..................................................................................................................................... 13
» CHASSIS LAYOUT ............................................................................................................................. 14
» BLOCK DIAGRAM .............................................................................................................................. 15
» DESCRIPTION OF SCHEMATIC DIAGRAMS ................................................................................... 16
» SCHEMATIC DIAGRAMS ................................................................................................................... 17
» PRINTED WIRING BOARD ASSEMBLIES ........................................................................................ 26
» REPLACEMENT PARTS LIST ............................................................................................................ 30
» PACKING OF THE SET ...................................................................................................................... 39
POWER INPUT ..................................................... 120V AC, 60 Hz
POWER RATING .................................................................. 135W
PICTURE SIZE ............................................ 3073cm
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 .............. 3.0W + 3.0W (at 10% distortion and

SHARP CORPORATION

SERVICE MANUAL

MODEL
CONTENTS
ELECTRICAL SPECIFICATIONS
SPEAKER
SIZE ........................................................ 12 x 6 cm oval (2 pcs.)
2
(476sq inch)
VOICE COIL IMPEDANCE ............................ 16 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
(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.
COLOR TELEVISION
Chassis No. GB-3U
32C230
(EIA, Channel Plan U.S.A.)
32C230
Page

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Summary of Contents for Sharp 32C230

  • Page 1: Table Of Contents

    32C230 SERVICE MANUAL COLOR TELEVISION Chassis No. GB-3U 32C230 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

    32C230 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

    32C230 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: Location Of User's Control

    32C230 LOCATION OF USER'S CONTROL Quick Reference Control Operation Quick Reference Control Operation • Part Names Front Panel POWER INSIDE DOOR Press → On. Press again → Off. VIDEO/AUDIO IN 2 TERMINALS REMOTE CONTROL SENSOR CHANNEL UP/DOWN MENU (a) Selects next higher channel.

  • Page 5: Installation And Service Instructions

    32C230 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 High voltage is not adjustable but must be checked The receiver is protected by a 4.0A fuse (F701),...
  • Page 6 32C230 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 7 TINT-S 0-127 (00h-7Fh) 62 (3Eh) S terminal input. C-TRAP 0-1 (00h-01h) 0 (00h) AUTO FLESH 0-1 (00h-01h) 0 (00h) SHARP P F 0-1 (00h-01h) 1 (01h) CD MATRIX 0-3 (00h-03h) 2 (02h) B-Y ATT 0-1 (00h-01h) 0 (00h) R-Y ATT...
  • Page 8 32C230 DATA SERVICE FIXED VALUE ADJUSTMENT ITEM NOTE NUMBER (HEX) RANGE INITIAL VALUE EW CORNER BOTTOM 19-81 (13h-51h) 50 (32h) Offset toward D13. NOISE DET LEVEL 0-3 (00h-03h) 0 (00h) V CENTERING 0-63 (00h-3Fh) 36 (24h) V-AGC 0-1 (00h-01h) 0 (00h) B.
  • Page 9 32C230 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 IC2001 Data is stored in IC2101.

  • Page 10: Service Adjustment

    32C230 SERVICE ADJUSTMENT RF AGC Adjustment Sub-picture and Sub-Bright Adjustments 1. Receive a good local channel. 1. Receive the window pattern signal. • RF INPUT (TU51) 2. Enter the service mode and select the service adjustment "R01". 2. Get into service adjustment data "V01" and "V05" and 3.

  • Page 11: Mts Adjustment

    32C230 Ë MTS ADJUSTMENT C. C Display Position Adjustment 1. Receive the lion head pattern signal. 2. Select "EX2" to display the text box. MTS Level Adjustment 3. Adjust the "EX2" bus data to let the text box displayed 1. Set the sound volume above 1.

  • Page 12: Chassis Layout

    32C230 CHASSIS LAYOUT...

  • Page 13: Block Diagram

    32C230 BLOCK DIAGRAM...
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  • Page 21: Printed Wiring Board Assemblies

    32C230 PRINTED WIRING BOARD ASSEMBLIES PWB-B: CRT Unit (Wiring Side) PWB-C: 3-LINE Y/C Unit (Wiring Side) PWB-C: 3-LINE Y/C Unit (Chip Parts Side)
  • Page 22 32C230 PWB-A: MAIN Unit (Wiring Side)
  • Page 23 32C230 PWB-A: MAIN Unit (Chip Parts Side)

  • Page 24: Schematic Diagrams

    X I.C. ' å IC751 VHiPQ09RD11-1 X PQ09RD11 IC900 VHiCXA2089Q-2Y X CXA2089Q-6T in USA: Contact your nearest SHARP Parts Distributor to order. For IC1403 VHiPQ05RD11-1 X PQ05RD11 location of SHARP Parts Distributor, Please call Toll-Free; 1- IC2001 RH-iXA418WJZZQ X TMP88CS38BFG 800-BE-SHARP...
  • Page 25 32C230 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTKB567WEY3 VCEA0A1HW475M+X 4.7 Electrolytic VCEA0A0JW108M+ X 1000 6.3V Electrolytic ∗ MAIN UNIT(Continued) VCKYCY1HF103Z X 0.01 Ceramic VCKYPA1HF103Z+ X 0.01 Ceramic ∗ C101 VCEA0A0JW108M+ X 1000 6.3V...
  • Page 26 32C230 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTKB567WEY3 ∗ C906 VCKYCY1HB681K X 680p 50V Ceramic C907 VCEA0A1HW105M+X 1 Electrolytic ∗ MAIN UNIT(Continued) C908 VCKYCY1HB103K X 0.01 Ceramic C909 VCEA0A1HW105M+X 1 Electrolytic C607 VCKYPA1HB472K+ X 4700p 50V...
  • Page 27 32C230 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTKB567WEY3 ∗ R422 VRS-CY1JF000J 1/16W Metal Oxide ∗ R430 VRS-CY1JF391J X 390 1/16W Metal Oxide ∗ MAIN UNIT(Continued) R431 VRS-CY1JF331J X 330 1/16W Metal Oxide ∗...
  • Page 28 32C230 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTKB567WEY3 ∗ R931 VRS-CY1JF750J X 75 1/16W Metal Oxide ∗ R932 VRS-CY1JF473J X 47k 1/16W Metal Oxide ∗ MAIN UNIT(Continued) R933 VRS-CY1JF473J X 47k 1/16W Metal Oxide ∗...

  • Page 29: Crt Unit

    32C230 Ref. No. Part No. Description Code Ref. No. Part No. Description Code RDA671 PRDARA057WJFW X Heat Sink for Q673 PWB-A: DUNTKB567WEY3 RDA701 PRDAR0279PEFW X Heat Sink for Q701 MAIN UNIT(Continued) RDA750 PRDAR5072CEFW X Heat Sink for IC751 RDA1403 PRDAR5072CEFW X Heat Sink for IC1403 ∗...
  • Page 30 32C230 Ref. No. Part No. Description Code Ref. No. Part No. Description Code ∗ PWB-B: DUNTKB568WEV1 C1412 VCKYCY1HB103K X 0.01 Ceramic ∗ C1413 VCKYCY1HB103K X 0.01 Ceramic CRT UNIT(Continued) C1414 VCE9GA1HW105M+X 1 Electrolytic ∗ C1415 VCCCCY1HH120J X 12p Ceramic ∗...

  • Page 31: Miscellaneous Parts

    GCOVHA017WJK Cover QCNW-B126WJZZ X Connecting Cord GDORFA044WJKA Door QCNW-B127WJZZ X Connecting Cord JBTN-A155WJKA Button, Power GCABBA187WJKA X REAR CABINET (32C230/231) SUPPLIED ACCESSORIES RRMCG1324CESC X Infrared R-C Unit TiNS-A709WJZZ X Operation Manual CABINET PARTS LOCATION PACKING PARTS (NOT REPLACEMENT ITEM) SPAKCA679WJZZ...

  • Page 32: Packing Of The Set

    32C230 PACKING OF THE SET Polyethylene Bag Operation Manual Infrared R/C unit Batteries Polyethylene Mat Buffer Material FRONT Packing Case Use tape to fix the top side of packing case. REAR Use 12 staples to fix the bottom side of packing case.
  • Page 33 QRC0003-U April. 2003 Modify : SEMEX Design and Production Information SHARP ELECTRONICA MEXICO S. A. DE C. V. Design base : JAPAN Quality & Reliability Control Center Production : SEMEX Blvd. SHARP No. 3510 Parque Industrial Rosarito...

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