Sharp 32SF56B Service Manual
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Sharp 32SF56B Service Manual

Sharp 32SF56B Service Manual

Color television
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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 ..................................................................................................................... 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 ................................................................. 163 W
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

SHARP CORPORATION

SERVICE MANUAL

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
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
32SF56B
MODEL
(EIA, Channel Plan U.S.A.)
32SF56B
Page

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  • Page 1: Table Of Contents

    32SF56B SERVICE MANUAL COLOR TELEVISION Chassis No. GB-3D 32SF56B 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

    32SF56B 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

    32SF56B 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

    32SF56B LOCATION OF USER'S CONTROL(32SF56B) Front Panel POWER INSIDE DOOR Press → On. Press again → Off. VIDEO/AUDIO IN 2 TERMINALS REMOTE CONTROL SENSOR CHANNEL UP/DOWN MENU ( ) Selects next higher channel. Press → Accesses MAIN MENU. ( ) Selects next lower channel.

  • Page 5: Installation And Service Instructions

    32SF56B 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 32SF56B 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 32SF56B 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

    32SF56B 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 32SF56B 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

    32SF56B 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

    32SF56B CHASSIS LAYOUT...

  • Page 13: Block Diagram

    32SF56B BLOCK DIAGRAM(32SF56B)

  • Page 14: Description Of Schematic Diagrams & Waveforms

    32SF56B 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=k Ω =1000 Ω , M=M Ω ) wave shapes at the red, green and blue cathodes of 2.

  • Page 15: Schematic Diagrams

    32SF56B SCHEMATIC DIAGRAMS CRT UNIT...
  • Page 16 32SF56B SCHEMATIC DIAGRAM: MAIN-1 Unit CRT / Combination CRT / Combination C609 C609 C610 C610 C681 C681 IC501 IC501 L672 L672 R523 R523 R604 R604 R621 R621 R622 R622 R692 R692 VB80AKS90X+2E VB80AKS90X+2E 16000p / 1800V 470p / 2kv 0.39 / 250V LA78041-E ZA057l 0.82 / 2W 5.6k / 7W 4.7 / 1W 16000p / 1800V 470p / 2kv 0.39 / 250V LA78041-E ZA057l 0.82 / 2W 5.6k / 7W 4.7 / 1W...
  • Page 17 32SF56B...
  • Page 18 32SF56B SCHEMATIC DIAGRAM: MAIN-2 Unit...
  • Page 19 32SF56B...
  • Page 20 32SF560 2-LINE Y/C UNIT...
  • Page 21 32SF560...

  • Page 22: Printed Wiring Board Assemblies

    32SF56B PRINTED WIRING BOARD ASSEMBLIES PWB-A: MAIN Unit (Wiring Components Side)
  • Page 23 32SF56B...
  • Page 24 32SF56B PWB-A: MAIN Unit (Components side)
  • Page 25 32SF56B...
  • Page 26 32SF56B 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 32SF56B Ref. No. Part No. Description Code Ref. No. Part No. Description Code D2040 RH-EX0619GEZZY Zener Diode, 6.2V PWB-A: DUNTKD571WEB0 D2041 VHD1SS133++-1Y Diode D2042 VHD1SS133++-1Y Diode MAIN UNIT D2060 RH-EX0619GEZZY Zener Diode, 6.2V PACKAGED CIRCUITS DIODES TH501 RH-HZ0004GEZZ+ Thermistor D361...

  • Page 29: Main Unit

    32SF56B Ref. No. Part No. Description Code Ref. No. Part No. Description Code U C701 RC-FZA146WJZZ 0.33 AC275V M.Poly. AC PWB-A: DUNTKD571WEB0 C702 RC-KZ0029CEZZ+ 0.01 AC250V Ceramic AB C703 RC-KZ0029CEZZ+ 0.01 AC250V Ceramic AB MAIN UNIT U C705 RC-EZ0722CEZZ 200V...
  • Page 30 32SF56B Ref. No. Part No. Description Code Ref. No. Part No. Description Code C3006 VCEA0A1HW106M+ X 10 PWB-A: DUNTKD571WEB0 C3007 VCEA0A1HW475M+ X 4.7 C3008 VCKYCY1CF104ZY X 0.1 Ceramic AA MAIN UNIT C3009 VCEA0A1CW477M+ X 470 C3010 VCE9GA1HW475M+ X 4.7 CAPACITORS C3011 VCEA0A1HW475M+ X 4.7...
  • Page 31 32SF56B Ref. No. Part No. Description Code Ref. No. Part No. Description Code R518 VRS-CY1JF102JY X 1k 1/16W M-Ox. PWB-A: DUNTKD571WEB0 R521 VRS-CY1JF101JY X 100 1/16W M-Ox. R523 VRN-RL3DBR68J+ X 0.68 M-Film MAIN UNIT R524 VRS-RG3AB561J+ X 560 M-Ox. RESISTORS...
  • Page 32 32SF56B Ref. No. Part No. Description Code Ref. No. Part No. Description Code R947 VRS-CY1JF223JY X 22k 1/16W M-Ox. PWB-A: DUNTKD571WEB0 R948 VRS-CY1JF101JY X 100 1/16W M-Ox. R949 VRS-CY1JF223JY X 22k 1/16W M-Ox. MAIN UNIT R950 VRS-CY1JF560JY X 56 1/16W M-Ox.
  • Page 33 32SF56B Ref. No. Part No. Description Code Ref. No. Part No. Description Code R2605 VRS-CY1JF000JY X 00 1/16W M-Ox. PWB-A: DUNTKD571WEB0 R2606 VRS-CY1JF000JY X 00 1/16W M-Ox. R3001 VRS-CY1JF221JY X 220 1/16W M-Ox. MAIN UNIT R3002 VRS-CY1JF221JY X 220 1/16W M-Ox.

  • Page 34: Crt Unit

    32SF56B Ref. No. Part No. Description Code Ref. No. Part No. Description Code R863 VRC-MA2HG152KY X 1.5k 1/2W Solid PWB-A: DUNTKD571WEB0 R864 VRC-MA2HG152KY X 1.5k 1/2W Solid R867 VRS-SV2HC392J X 3.9k 1/2W M-Ox. MAIN UNIT R868 VRS-SV2HC682J X 6.8k 1/2W M-Ox.

  • Page 35: Packing Parts

    32SF56B Ref. No. Part No. Description Code Ref. No. Part No. Description Code PACKING PARTS PWB-D: DUNTKB572WEV0 (NOT REPLACEMENT ITEM) 2 LINE Y/C UNIT CAPACITORS [EL.··· Electrolytic, M-Poly.··· Metalized Polypro Film] SPAKCC632WJZZ X Packing Case SPAKP0110GJZZ X Buffer Material C1408 VCKYCY1HB103KY X 0.01...

  • Page 36: Packing Of The Set

    32SF56B 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 37 QRC0000-U April. 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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