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Sharp 26PL83M Service Manual
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Sharp 26PL83M Service Manual

Sharp 26PL83M Service Manual

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POWER
POWER
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 .............................................................................................................................. 14
» SCHEMATIC DIAGRAMS ................................................................................................................... 15
» PRINTED WIRING BOARD ASSEMBLIES ........................................................................................ 25
» REPLACEMENT PARTS LIST ............................................................................................................ 30
» PACKING OF THE SET ...................................................................................................................... 39
POWER INPUT ..................................................... AC120V, 60 Hz
POWER RATING .................................................................. 141W
PICTURE SIZE ........................................ 2,032.5cm
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 ............... 5.0W +5.0W (at 10% distortion and

SERVICE MANUAL

PUSH OPEN
MTS STEREO
CONTENTS
ELECTRICAL SPECIFICATIONS
2
(315sq inch)
(Nominal)
Dual CH Operate)

SHARP CORPORATION

COLOR TELEVISION
Chassis No. MS-B
26PL83M
MODEL
SPEAKER
SIZE ........................................................ 12 x 6 cm oval (2 pcs.)
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
Specifications are subject to change without
prior notice.
1
26PL83M
S81Y926PL83M/
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  • Page 1: Table Of Contents

    26PL83M SERVICE MANUAL S81Y926PL83M/ COLOR TELEVISION Chassis No. MS-B PUSH OPEN POWER POWER MTS STEREO 26PL83M 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

    26PL83M 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

    26PL83M 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

    26PL83M LOCATION OF USER'S CONTROL Front Panel VIDEO/AUDIO IN2 TERMINALS – MENU VIDEO IN 2 L-AUDIO-R POWER POWER MTS STEREO POWER Press → On. Press again → Off. CH √ – VOL + MENU POWER POWER MENU Press → Accesses MAIN SENSOR AREA FOR MENU.

  • Page 5: Installation And Service Instructions

    26PL83M 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 26PL83M 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 26PL83M DATA SERVICE ADJUSTMENT ITEM ADJUSTMENT CONTENTS NUMBER INITIAL VALUE RANGE PICTURE 0-15(00h-0Fh) TINT 0-127(00h-7Fh) COLOR 0-127(00h-7Fh) SUB-COLOR 0-31(00h-1Fh) Must be set to "10" BRIGHT 0-127(00h-7Fh) R CUT-OFF 64-255(40h-FFh) G CUT-OFF 64-255(40h-FFh) B CUT-OFF 64-255(40h-FFh) G DRIVE 0-127(00h-7Fh) B DRIVE...
  • Page 8 26PL83M DATA SERVICE ADJUSTMENT ITEM ADJUSTMENT CONTENTS NUMBER INITIAL VALUE RANGE AFC GAIN 0-3(00h-03h) Must be set to "02" V EHT 0-7(00h-07h) Must be set to "07" H EHT 0-7(00h-07h) Must be set to "03" FAO VOLUME 0-50(00h-32h) Must be set to "24"...

  • Page 9: Service Adjustment

    26PL83M SERVICE ADJUSTMENT VCO Adjustment White Balance Adjustment 1. Connect a digital voltmeter between pin (55) 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 10 26PL83M Vertical-Size and Linearity Adjustments Other Adjustments 1. Enter the service mode. 1. Receive a good local channel. 2. Adjust the following data values as listed below. 2. Enter the service mode and select the service adjustment "D03" for V-size.

  • Page 11: Mts Adjustment

    26PL83M Ë MTS ADJUSTMENT MTS Level Adjustment 1. Receive the following composite signal. Monaural signal: 400Hz, 100% modulation 2. Connect the rms voltmeter to pin (39) of IC3001. 3. Enter the service mode and select the service adjustment "M01" and set to "09".

  • Page 12: Chassis Layout

    26PL83M CHASSIS LAYOUT...

  • Page 13: Block Diagram

    26PL83M BLOCK DIAGRAM...

  • Page 14: Description Of Schematic Diagram

    26PL83M 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 15: Schematic Diagrams

    26PL83M SCHEMATIC DIAGRAM: MAIN-1 Unit DUNTKA526WED6...
  • Page 16 26PL83M SCHEMATIC DIAGRAM: MAIN-2 Unit (DUNTKA526WED6)
  • Page 17 26PL83M SCHEMATIC DIAGRAM: AV Unit...
  • Page 18 26PL83M SCHEMATIC DIAGRAM: CRT Unit (DUNTKA527WEA6)
  • Page 19 26PL83M SCHEMATIC DIAGRAM: CONTROL Unit...
  • Page 20 26PL83M SCHEMATIC DIAGRAM: MTS MODULE Unit...

  • Page 21: Printed Wiring Board Assemblies

    26PL83M PRINTED WIRING BOARD ASSEMBLIES PWB-B: CRT Unit (Wiring Side) PWB-S: MTS MODULE Unit PWB-S: MTS MODULE Unit (Wiring Side) (Chip Parts Side)
  • Page 22 26PL83M PWB-A: MAIN Unit (Wiring Side)
  • Page 23 26PL83M PWB-A: MAIN Unit (Chip Parts Side)
  • Page 24 26PL83M PWB-C: AV Unit (Wiring Side) PWB-C: AV Unit (Chip Parts Side)
  • Page 25 26PL83M PWB-F: CONTROL Unit (Wiring Side)

  • Page 26: Main Unit

    26PL83M PARTS LIST Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A:DUNTKA526WED6 PARTS REPLACEMENT MAIN UNIT Replacement parts which have these special safety characteristics identified in this manual; electrical components having such features TUNER å are identified by...
  • Page 27 26PL83M Ref. No. Part No. Description Code Ref. No. Part No. Description Code C231 VCKYCY1CF104Z J 0.1 Ceramic PWB-A:DUNTKA526WED6 C232 VCEA0A1HW474M J 0.47 C233 VCKYCY1CF104Z J 0.1 Ceramic MAIN UNIT (Continued) C307 VCKYCY1CF104Z J Ceramic C361 VCEA0A1HW105M J 1.0 D652...
  • Page 28 26PL83M Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A:DUNTKA526WED6 C2064 VCKYCY1CF104Z J 0.1 Ceramic C2201 VCKYCY1HB681K J 680p 50V Ceramic MAIN UNIT (Continued) C2202 VCCCCY1HH390J J 39p Ceramic RESISTORS C702 RC-KZ0029CEZZ J 0.01 500V Ceramic [M-Ox.···...
  • Page 29 26PL83M Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A:DUNTKA526WED6 VRS-SV2HCR56J MAIN UNIT (Continued) R623 VRN-RL3AB2R7J X 2.7 M-Film å R624 VRS-RG3DB332J X 3.3k 2W M-Ox. å R625 VRD-RA2BE102J J 1.0k 1/8W Carbon R201 VRS-CY1JF151J J 150 1/16W M-Ox.
  • Page 30 26PL83M Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A:DUNTKA526WED6 R2061 VRS-CY1JF562J J 5.6k 1/16W M-Ox. R2063 VRS-CY1JF222J J 2.2k 1/16W M-Ox. MAIN UNIT (Continued) R2064 VRS-CY1JF332J J 3.3k 1/16W M-Ox. R2066 VRS-CY1JF103J J 10k 1/16W M-Ox.

  • Page 31: Crt Unit

    26PL83M Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-B:DUNTKA527WEA6 PWB-C:DUNTKA528WEA6 CRT UNIT AV UNIT INTEGRATED CIRCUIT INTEGRATED CIRCUITS IC850 VHiTDA6103Q-1 J TDA6103Q/N3 IC1401 VHiTC90A45F-1 J TC90A45F å TRANSISTORS IC1900 VHiCXA2089Q-1 J CXA2089Q Q850 VS2SA1266-Y-1 J A1266-Y...
  • Page 32 26PL83M Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-C:DUNTKA528WEA6 R1944 VRS-CY1JF223J J 22k 1/16W M-Ox. R1945 VRS-CY1JF101J J 100 1/16W M-Ox. AV UNIT (Continued) R1946 VRS-CY1JF103J J 10k 1/16W M-Ox. R1954 VRD-RA2BE221J J 220 1/8W...

  • Page 33: Control Unit

    26PL83M Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-F: DUNTKA530WEA0 PWB-S: DUNTKA070WEV3 CONTROL UNIT MTS MODULE UNIT DIODE INTEGRATED CIRCUIT D4004 RH-PX0383CEZZ X Power-On/Off Indicator IC3001 VHiCXA2074Q-1 J CXA2074Q CAPACITORS CAPACITORS [EL.··· Electrolytic] [EL.··· Electrolytic] C4001 VCEA0A1CW476M J 47 C3001 VCE9GA1HW475M J 4.7...

  • Page 34: Cabinet Parts

    LHLDK0008PEZZ J Holder JBTN-0106GJSC X Power Button LHLDZ1037MEZZ X Holder MSPRC0005PEFW J Spring, for Power Button TLABM0003GJZZ X Label HBDGB3141CESA J Badge, "SHARP" TLABZ0162GJZZ X Label GDORF0001GJSC X Door LCHSM0008MEK0 X Chassis HiNDP0001GJZZ X Indication Plate PMAGG3006CEZZ J Magnet PKAi-0002PE00...

  • Page 35: Packing Of The Set

    26PL83M PACKING OF THE SET Polyethylene Bag Operation Manual Infrared R/C Unit Batteries Polyethylene Sheet Buffer Material FRONT Packing Case Use tape to fix the top side of packing case. Bar Code Label REAR Use 12 staples to fix the bottom side of packing case.
  • Page 36 SHARP ELECTRONICA MEXICO S. A. DE C. V. TQ0000-S D SEM P SEMEX Blvd. SHARP No. 3510 Parque Industrial June.

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