Sharp 27U-S650 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 ..................................................................................................... 4

» INSTALLATION AND SERVICE INSTRUCTIONS ................................................................................ 5

» SERVICE ADJUSTMENT .....................................................................................................................9

» CHASSIS LAYOUT ............................................................................................................................. 12

» BLOCK DIAGRAM .............................................................................................................................. 13

» SCHEMATIC DIAGRAMS ................................................................................................................... 14

» PRINTED WIRING BOARD ASSEMBLIES ........................................................................................ 23

» REPLACEMENT PARTS LIST ............................................................................................................ 28

» PACKING OF THE SET ...................................................................................................................... 39

POWER INPUT ..................................................... 120V AC 60 Hz

POWER RATING .................................................................. 126W

PICTURE SIZE ........................................... 2,187cm

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

MODELS

CONTENTS

ELECTRICAL SPECIFICATIONS

SPEAKER

SIZE .......................................................... 9 x 5 cm oval (2 pcs.)

(339sq 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

(Nominal)

Dual CH Operate)

Specifications are subject to change without

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-1

27U-S650

(EIA, Channel Plan U.S.A.)

27U-S650

Page

Table of Contents

Summary of Contents for Sharp 27U-S650

Page 1: Table Of Contents
27U-S650 SERVICE MANUAL COLOR TELEVISION Chassis No. GB-1 27U-S650 MODELS 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
27U-S650 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
27U-S650 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
27U-S650 LOCATION OF USER'S CONTROL Front Panel VIDEO IN 2 L-AUDIO-R (INSIDE DOOR) POWER CHANNEL UP/DOWN → Press ( ) Selects next higher → Press again Off. channel. ( ) Selects next lower SENSOR AREA FOR channel. REMOTE CONTROL •...
Page 5: Installation And Service Instructions
27U-S650 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 27U-S650 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 27U-S650 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 27U-S650 DATA SERVICE ADJUSTMENT ITEM ADJUSTMENT CONTENTS NUMBER INITIAL VALUE RANGE EW PARABOLA 0-63(00h-3Fh) Must be set to "21" EW TRAPEZIUM 0-31(00h-1Fh) Must be set to "0E" EW CORNER 0-15(00h-0Fh) Must be set to "0C" AFC GAIN 0-3(00h-03h) Must be set to "02"...
Page 9: Service Adjustment
27U-S650 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 2. Enter the service mode and select the service adjustment "R01". 2. Get into service adjustment data "V01" and "V05"...
Page 10 27U-S650 Vertical Phase Adjustment Sub-Tint Adjustment 1. Receive the half color bar signal. 1. Enter the service mode and select the service • RF INPUT adjustment "D01". 2. Get into Y-Mute by R/C, or by setting the "V18" bus 2. Adjust "D01" data value so that picture is centered.
Page 11: Mts Adjustment
27U-S650 Ë MTS ADJUSTMENT Separation Adjustment 1. Connect the rms voltmeter to pin (39) of IC3001. 2. Receive the following composite stereo signal 1. MTS Level Adjustment Composite stereo signal: 30% modulation, left 1. Receive the following composite signal. channel only, noise reduction on, 300Hz Monaural signal: 400Hz, 100% modulation 3.
Page 12: Chassis Layout
27U-S650 CHASSIS LAYOUT...
Page 13: Block Diagram
27U-S650 BLOCK DIAGRAM...
Page 14: Description Of Schematic Diagram
27U-S650 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 27U-S650 SCHEMATIC DIAGRAM: MAIN-1 Unit...
Page 16 27U-S650 SCHEMATIC DIAGRAM: MAIN-2 Unit...
Page 17 27U-S650 SCHEMATIC DIAGRAM: AV Unit DUNTKA602WEA0...
Page 18 27U-S650 SCHEMATIC DIAGRAM: CRT Unit...
Page 19 27U-S650 DIAGRAM: MTS MODULE Unit...
Page 20: Printed Wiring Board Assemblies
27U-S650 PRINTED WIRING BOARD ASSEMBLIES PWB-A: MAIN Unit (Wiring Side)
Page 21 27U-S650 PWB-A: MAIN Unit (Chip Parts Side)
Page 22 27U-S650 PWB-C: AV Unit (Wiring Side) PWB-C: AV Unit (Chip parts Side)
Page 23 27U-S650 PWB-S: MTS MODULE Unit (Wiring Side) PWB-S: MTS MODULE Unit (Chip Parts Side)
Page 24 27U-S650 PWB-B: CRT Unit (Wiring Side)
Page 25: Replacement Parts List
3. PART NO. 4. DESCRIPTION TUNER NOTE: THE PARTS HERES SHOWN ARE SUPPLIED AS AN in USA: Contact your nearest SHARP Parts Distributor to order. For ASSEMBLY BUT NOT INDEPENDENTLY. location of SHARP Parts Distributor, Please call Toll-Free; 1- TU51 VTUVTST5UF740 X Tuner å...
Page 26: Main Unit
27U-S650 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTKA526WEE8 D2403 RH-EX0619GEZZ J Zener Diode, 6.2V VA701 RH-VX0019CEZZ J Varistor å MAIN UNIT RH-VX0048CEZZ Q650 VS2SA1266-Y-1 J 2SA1266-Y Q701 VSST6NC60FP1E ST6NC60FP å RH-VX0035CEZZ VSST6NK60FP PACKAGED CIRCUITS...
Page 27 27U-S650 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTKA526WEE8 RC-FZ029SCEZZ 0.22 AC125V Plastic MAIN UNIT RC-FZ021SCEZZ 0.22 AC125V Plastic C365 VCEA0A1HW105M J 1 C702 RC-KZ0029CEZZ J 0.01 500V Ceamic C366 VCEA0A1CW106M J 10 C703 RC-KZ0029CEZZ J 0.01...
Page 28 27U-S650 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTKA526WEE8 R227 VRS-CY1JF333J J 33k 1/16W M-Ox. R228 VRS-CY1JF102J J 1k 1/16W M-Ox. MAIN UNIT R229 VRS-CY1JF221J J 220 1/16W M-Ox. R233 VRS-CY1JF102J J 1k 1/16W M-Ox.
Page 29 27U-S650 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTKA526WEE8 RR-DZ0048CEZZ MAIN UNIT R751 VRS-CY1JF473J J 47k 1/16W M-Ox. R766 VRS-CY1JF333J J 33k 1/16W M-Ox. R513 VRS-CY1JF273J J 27k 1/16W M-Ox. R767 VRS-CY1JF273J J 27k 1/16W M-Ox.
Page 30 27U-S650 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTKA526WEE8 R2506 VRS-CY1JF822J J 8.2k 1/16W M-Ox. R2507 VRS-CY1JF183J J 18k 1/16W M-Ox. MAIN UNIT R2508 VRS-CY1JF183J J 18k 1/16W M-Ox. R2601 VRD-RA2BE470J J 47 1/8W...
Page 31: Crt Unit
27U-S650 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTKA526WEE8 PWB-B: DUNTKA527WEB9 MAIN UNIT CRT UNIT INTEGRATED CIRCUIT å IC850 VHiTDA6103Q-1 J TDA6103Q/N3 P1901 QPLGN1559REZZ X Plug, 15-pin(VA) P1902 QPLGN1559REZZ X Plug, 15-pin(VB) TRANSISTORS P1903 QPLGN1059REZZ J Plug, 10-pin(VC)
Page 32 27U-S650 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-B: DUNTKA527WEB9 PWB-C: DUNTKA602WEA0 CRT UNIT AV UNIT INTEGRATED CIRCUITS R867 VRS-SV2HC392J J 3.9k 1/2W M-Ox. R868 VRS-SV2HC332J J 3.3k 1/2W M-Ox. IC1401 VHiTC90A53F-1 X I.C. R869...
Page 33 27U-S650 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-C: DUNTKA602WEA0 RESISTORS [M-Ox.··· Metal Oxide] AV UNIT RJ12 VRS-CY1JF000J 1/16W M-Ox. RJ13 VRS-CY1JF000J 1/16W M-Ox. C1428 VCKYCY1HF103Z J 0.01 Ceramic RJ14 VRS-CY1JF000J 1/16W M-Ox. C1429 VCKYCY1HF103Z J 0.01...
Page 34: Miscellaneous Parts
27U-S650 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-S: DUNTKB224WEA2 MISCELLANEOUS PARTS MTS MODULE UNIT ACC701 QACCD3065CESA J AC Cord å INTEGRATED CIRCUITS QACCDA001WJSA VSP9050PB368A Speaker(L), 8 ohm IC3001 VHiCXA2074Q-1 J CXA2074Q VSP9050PB368A Speaker(R), 8 ohm...
Page 35: Packing Parts
27U-S650 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PACKING PARTS CABINET PARTS (NOT REPLACEMENT ITEM) CCABAA060WEH0 Front Cabinet Ass'y SPAKCA100WJZZ – Packing Case — Not Available – Front Cabinet — SPAKP0109GJZZ – Wrapping Paper —...
Page 36: Packing Of The Set
27U-S650 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. REAR Use 12 staples to fix the bottom side of packing case.
Page 37 SHARP ELECTRONICA MEXICO S. A. DE C. V. TQ0000-S D SEM P SEMEX Blvd. SHARP No. 3510 Parque Industrial June.

Sharp 27U-S650 Service Manual

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