Sharp 32SC260 Service Manual
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Sharp 32SC260 Service Manual

Sharp 32SC260 Service Manual

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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 ..................................................................................................................... 9
» CHASSIS LAYOUT ............................................................................................................................. 12
» BLOCK DIAGRAM .............................................................................................................................. 13
» DESCRIPTION OF SCHEMATIC DIAGRAMS & WAVEFORMS ........................................................14
» SCHEMATIC DIAGRAMS ................................................................................................................... 15
» PRINTED WIRING BOARD ASSEMBLIES ........................................................................................ 22
» PARTS LIST ........................................................................................................................................ 27
» PACKING OF THE SET ...................................................................................................................... 36
POWER INPUT ..................................................... 120V AC, 60 Hz
POWER RATING ................................................................... 155W
PICTURE SIZE .......................................... 3,073 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 .............. 3.0W + 3.0W (at 10% distortion and

SHARP CORPORATION

SERVICE MANUAL

MODEL
CONTENTS

ELECTRICAL SPECIFICATIONS

SPEAKER
SIZE .......................................................... 12 x 5 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
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.
COLOR TELEVISION
Chassis No. GB-3D(1W)
32SC260
(EIA, Channel Plan U.S.A.)
32SC260
Page

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Summary of Contents for Sharp 32SC260

  • Page 1: Table Of Contents

    32SC260 SERVICE MANUAL COLOR TELEVISION Chassis No. GB-3D(1W) 32SC260 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

    32SC260 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

    32SC260 IMPORTANT SERVICE SAFETY PRECAUTION (Continued) BEFORE RETURNING THE RECEIVER • Connect the resistor connection to all exposed metal 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

    32SC260 LOCATION OF USER'S CONTROL Front Panel POWER VIDEO/AUDIO IN 2 Press TERMINALS Press again Off. REMOTE CONTROL SENSOR CHANNEL UP/DOWN MENU ( ) Selects next higher channel. Press Accesses MAIN MENU. VOLUME UP/DOWN ( ) Selects next lower channel.

  • Page 5: Installation And Service Instructions

    32SC260 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 CIRCUIT PROTECTION The receiver is protected by a 4.0A fuse (F701),...
  • Page 6 32SC260 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) 00 (00h) AUTO FRESH 0-1 (00h-01h) 00 (00h) SHARP P F 0-1 (00h-01h) 01 (01h) CD MATRIX 0-3 (00h-03h) 02 (02h) B-Y ATT 0-1 (00h-01h) 00 (00h) R-Y ATT 0-1 (00h-01h)
  • Page 8 32SC260 DATA SERVICE NOTES FIXED VALUE ADJUSTMENT ITEM NUMBER RANGE (HEX) INITIAL VALUE V POSITION 0-7 (00h-07h) 00 (00h) H POSITION 0-31 (00h-1Fh) 15 (0Fh) V SIZE 0-127 (00h-7Fh) 89 (59h) H SIZE 0-63 (00h-3Fh) 36 (24h) V-LINEARITY 0-15 (00h-0Fh)

  • Page 9: Service Adjustment

    32SC260 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 32SC260 Sub-Tint Adjustment 2. Enter the service mode and select the service adjustment "D03" for V-size. 1. Receive the half color bar signal. 3. Adjust the "D03" bus data to get the proper V-size. • RF INPUT (TU1101) 4. For V-linearity adjustment, select data bus "D05" and 2.

  • Page 11: Mts Adjustment

    32SC260 Ë MTS ADJUSTMENT MTS Level Adjustment 1. Set the sound volume above 1. Monoral signal: 400Hz, 100% modulation 2. Confirm "EX4" data is "5Ah". 3. Vary the "M01" bus data until the voltage to pin (39) of IC3001 to become the value as stated below.

  • Page 12: Chassis Layout

    32SC260 CHASSIS LAYOUT...

  • Page 13: Block Diagram

    32SC260 BLOCK DIAGRAM...

  • Page 14: Description Of Schematic Diagrams & Waveforms

    32SC260 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 15: Schematic Diagrams

    32SC260 SCHEMATIC DIAGRAM: CRT Unit...
  • Page 16 32SC260 SCHEMATIC DIAGRAM: MAIN-1 Unit...
  • Page 17 32SC260...
  • Page 18 32SC260 SCHEMATIC DIAGRAM: MAIN-1 Unit...
  • Page 19 32SC260...
  • Page 20 32SC260 SCHEMATIC DIAGRAM: MAIN-1 Unit...
  • Page 21 32SC260...

  • Page 22: Printed Wiring Board Assemblies

    32SC260 PRINTED WIRING BOARD ASSEMBLIES PWB-A: MAIN Unit (Wiring Components Side)
  • Page 23 32SC260...
  • Page 24 32SC260 PWB-A: MAIN Unit (Components side)
  • Page 25 32SC260...
  • Page 26 32SC260 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 27: Parts List

    PQ1CZ41H2ZPH IC1102 VHIBA00BC0W-1S BA00BC0WT-V5 in USA: Contact your nearest SHARP Parts Distributor to order. IC1103 VHINJ2584AM-1Y NJ2584AM For location of SHARP Parts Distributor, Please call Toll- IC1104 VHIBA00BC0W-1S BA00BC0WT-V5 Free; 1-800-BE-SHARP IC1403 VHIPQ05RDA1-1 PQ050RDA1SZ « MARK: SPARE PARTS-DELIVERY SECTION IC2001...

  • Page 28: Main Unit

    32SC260 Ref. No. Part No. Description Code Ref. No. Part No. Description Code D2042 VHD1SS133++-1Y Diode PWB-A: DUNTKD571WEA7 D2060 RH-EX0619GEZZY Zener Diode, 6.2V MAIN UNIT PACKAGED CIRCUITS TH501 RH-HZ0004GEZZ+ Thermistor DIODES VA701 RH-VXA009WJZZ VARISTOR D411 RH-EX0611GEZZY Zener Diode 5.1V AB...
  • Page 29 32SC260 Ref. No. Part No. Description Code Ref. No. Part No. Description Code C723 RC-EZ0724CEZZ 160V PWB-A: DUNTKD571WEA7 C725 RC-EZA065WJZZ 160V MAIN UNIT C726 RC-KZ0226CEZZ+ 560p Ceramic AC C727 RC-KZ0226CEZZ+ 560p Ceramic AC CAPACITORS C729 VCEA0A1HW106M+ X [EL.··· Electrolytic, M-Poly.··· Metalized Polypro Film]...
  • Page 30 32SC260 Ref. No. Part No. Description Code Ref. No. Part No. Description Code C3013 VCKYCY1HB272KY 2700p 50V Ceramic PWB-A: DUNTKD571WEA7 C3014 VCKYCY1CB473KY 0.05 Ceramic MAIN UNIT C3015 VCEACA1HC335K+ C3016 VCE9GA1HW475M+ X CAPACITORS C3017 VCEACA1CC106K+ [EL.··· Electrolytic, M-Poly.··· Metalized Polypro Film]...
  • Page 31 32SC260 Ref. No. Part No. Description Code Ref. No. Part No. Description Code R624 VRS-RG3DB332J+ 3.3k M-Ox. PWB-A: DUNTKD571WEA7 R625 VRD-RA2BE102JY 1/8W Carbon MAIN UNIT R627 VRN-RL3ABR47J+ 0.47 M-Film R628 VRN-RL3ABR47J+ 0.47 M-Film R651 VRS-RG2HC270J+ 1/2W M-Ox. RESISTORS [M-Ox.··· Metal Oxide, M-Film ··· Metal Film]...
  • Page 32 32SC260 Ref. No. Part No. Description Code Ref. No. Part No. Description Code R969 VRS-CY1JF472FY 4.7k 1/16W M-Ox. PWB-A: DUNTKD571WEA7 R970 VRD-RA2BE6R8JY 1/8W Carbon MAIN UNIT R971 VRS-CY1JF101JY 1/16W M-Ox. R972 VRS-CY1JF101JY 1/16W M-Ox. RESISTORS R973 VRS-CY1JF000JY 1/16W M-Ox. [M-Ox.··· Metal Oxide, M-Film ··· Metal Film]...
  • Page 33 32SC260 Ref. No. Part No. Description Code Ref. No. Part No. Description Code R3032 VRS-CY1JF102JY 1/16W M-Ox. PWB-A: DUNTKD571WEA7 R3033 VRS-CY1JF474JY 470k 1/16W M-Ox. MAIN UNIT R3034 VRS-CY1JF000JY 1/16W M-Ox. R3035 VRS-CY1JF102JY 1/16W M-Ox. RESISTORS R3036 VRS-CY1JF102JY 1/16W M-Ox. [M-Ox.··· Metal Oxide, M-Film ··· Metal Film]...

  • Page 34: Crt Unit

    32SC260 Ref. No. Part No. Description Code Ref. No. Part No. Description Code R875 VRD-RA2BE471JY 1/8W Carbon AA PWB-B: DUNTKB568WEV1 R876 VRD-RA2BE121JY 1/8W Carbon AA R877 VRD-RA2BE121JY 1/8W Carbon AA CRT UNIT R878 VRD-RA2BE121JY 1/8W Carbon AA R879 VRD-RM2HD100JY 1/2W...

  • Page 35: Packing Parts

    CABINET PARTS MISCELLANEOUS PARTS P1401 QPLGZ0810CEZZ plug 32" CCABAB257WEH0 Front Cabinet Assembly Not Available — Front Cabinet — HBDGB1009MESB BADGE (SHARP PLASTIC) GCOVA0119GJKA RC/LED Cover MISCELLANEOUS PARTS JBTN-0119GJKE Button, Power JBTN-0120GJKE Button, Menu, CH-Up/Down, VOL-Up/Down VSP1206PB69WA Speaker (L) VSP1206PB69WA Speaker (R)

  • Page 36: Packing Of The Set

    32SC260 PACKING OF THE SET Polyethylene Bag ACCESSORIES Polyethylene Mat Packing Foam 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 37 32SC260...
  • Page 38 QRC0028-U January. 2006 Modify : SEMEX Design and Production Information SHARP ELECTRONICA MEXICO S. A. DE C. V. Design base : SEM Quality & Reliability Control Center Production : SEMEX Blvd. SHARP No. 3510 Parque Industrial Rosarito...

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