Sharp 27K-X2000 Service Manual
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Sharp 27K-X2000 Service Manual

Sharp 27K-X2000 Service Manual

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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
» CHASSIS LAYOUT ............................................................................................................................ 13
» BLOCK DIAGRAM ............................................................................................................................. 15
» SCHEMATIC DIAGRAMS .................................................................................................................. 17
» PRINTED WIRING BOARD ASSEMBLIES ........................................................................................ 27
» REPLACEMENT PARTS LIST ........................................................................................................... 36
» PACKING OF THE SET ..................................................................................................................... 49
POWER INPUT ................................................... 120 V AC 60 Hz
POWER RATING .................................................................. 135 W
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 .............. 1.3W + 1.3W (at 10% distortion and

SHARP CORPORATION

SERVICE MANUAL

MODEL
CONTENTS
ELECTRICAL SPECIFICATIONS
SPEAKER
SIZE ...................................................................... 8 cm (Round)
VOICE COIL IMPEDANCE ............................... 8 ohm at 400 Hz
2
(339sq inch)
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
prior notice.
Dual CH Operate)
This document has been published to be used for after
sales service only.
The contents are subject to change without notice.
1
COLOR TELEVISION
Chassis No.SN-84
27K-X2000
(EIA, Channel Plan U.S.A.)
27K-X2000
S68S727K-X200
Page

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  • Page 1: Table Of Contents

    27K-X2000 SERVICE MANUAL S68S727K-X200 COLOR TELEVISION Chassis No.SN-84 27K-X2000 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

    27K-X2000 IMPORTANT SERVICE SAFETY PRECAUTION 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

    27K-X2000 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

    27K-X2000 LOCATION OF USER'S CONTROL...

  • Page 5: Installation And Service Instructions

    27K-X2000 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...
  • Page 6 27K-X2000 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 27K-X2000 » To call up the service mode, hold down the CH UP and VOL UP keys of the unit at once and plug the AC power cord into a wall outlet. The unit switches on and comes in the service mode.
  • Page 8 27K-X2000 SERVICE VARIABLE INITIAL FIXED INPUT CONDITIONS ADJUSTMENT ITEM CONTROL DESTINATION DATA RANG VALUE VALUE C-DECODE 0 ~ 255 ” ” OSD POSITION ” C.C. display positioning INPUT LEVEL (ATT) ” MTS IC (IC3001) adjusted MTS VCO ” ” FILTER ”...
  • Page 9 27K-X2000 Holding down both the CH-up/down buttons on the TV set at service mode for more than 2 seconds will automatically write the above initial values into IC2002. ADJUSTMENT PART REPLACED NOTES UNNECESSARY NECESSARY IC2001 Data is stored in IC2002.

  • Page 10: Service Adjustment

    27K-X2000 SERVICE ADJUSTMENT Entering The Fixed Values Sub-Picture Adjustment 1. Before starting all the adjustments, enter the fixed 1. Receive a good local channel signal through the values listed in Table - A. antenna B. 2. Make sure the customer picture control is set to Screen Adjustment maximum.
  • Page 11 27K-X2000 Sub-Brightness Adjustment Horizontal Position Adjustment 1. Have unit receive a good local channel. 1. Have unit receive a good local channel. 2. Make sure the customer brightness control is set to 2. Enter the service mode and select the service center position.

  • Page 12: Mts Adjustment

    27K-X2000 MTS ADJUSTMENT P-IN-P ADJUSTMENT MTS Level Adjustment P-IN-P Y LEVEL Adjustment 1. Feed the following monaural signal to pin (14) of 1. Receive a good local channel. 2. Enter the service mode and select the service IC3001. Monaural signal : 300Hz, 245mVrms adjustment "P01".

  • Page 13: Chassis Layout

    27K-X2000 27K-X2000 CHASSIS LAYOUT PWB-B PWB-A PWB-H PWB-K PWB-L PWB-R...

  • Page 14: Block Diagram

    27K-X2000 27K-X2000 BLOCK DIAGRAM...

  • Page 15: Description Of Schematic Diagram

    27K-X2000 27K-X2000 DESCRIPTION OF SCHEMATIC DIAGRAM SCHEMATIC DIAGRAM: CRT, FRONT AV Unit 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.
  • Page 16 27K-X2000 27K-X2000 SCHEMATIC DIAGRAM: MAIN-1 Unit...
  • Page 17 27K-X2000 27K-X2000 SCHEMATIC DIAGRAM: MAIN-2 Unit...

  • Page 18: Schematic Diagrams

    27K-X2000 27K-X2000 SCHEMATIC DIAGRAM: SUB and SURROUND Unit...
  • Page 19 27K-X2000 27K-X2000 SCHEMATIC DIAGRAM: P-IN-P Unit...

  • Page 20: Printed Wiring Board Assemblies

    27K-X2000 27K-X2000 PRINTED WIRING BOARD ASSEMBLIES PWB-A : MAIN Unit (Wiring Side)
  • Page 21 27K-X2000 27K-X2000 PWB-A : MAIN Unit (Chip Parts Side)
  • Page 22 27K-X2000 27K-X2000 PWB-L : SURROUND Unit (Wiring Side) PWB-R : P-IN-P Unit (Wiring Side) PWB-K : SUB Unit (Wiring Side)
  • Page 23 27K-X2000 27K-X2000 PWB-L : SURROUND Unit (Chip Parts Side) PWB-R : P-IN-P Unit (Chip Parts Side) PWB-K : SURROUND Unit (Chip Parts Side)

  • Page 24: Replacement Parts List

    3. PART NO. 4. DESCRIPTION IC1701 VHiMC14577F-1 J MC14577BF Contact your nearest SHARP Parts Distributor to order. IC1702 VHiM52055FP-1 J M52055FP For location of SHARP Parts Distributor, Please call Toll-Free; 1-800- IC1703 VHiMM1111XF1E J MM1111XFBE BE-SHARP IC1704 VHiMM1111XF1E J MM1111XFBE IC2001 RH-iX2983CEZZ M I.C.
  • Page 25 27K-X2000 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTK9640WEK0 FILTERS CF501 RFiLA0034CEZZ J Filter MAIN UNIT (Continued) CF2001 RFiLC0121GEZZ J Filter D457 RH-EX0631GEZZ J Zener Diode, 9.1V COILS RH-EX1314CEZZ DL1401RCiLZ0938CEZZ J Coil D501 RH-DX0441CEZZ...
  • Page 26 27K-X2000 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTK9640WEK0 C756 VCEA0A1CW337M J 330 C760 RC-QZA393TAYK J 0.039 50V Mylar MAIN UNIT (Continued) C781 VCEA0A1HW106M J 10 C523 VCKYPA1HF103Z J 0.01 Ceramic C782 VCEA0A1HW106M J 10...
  • Page 27 27K-X2000 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTK9640WEK0 RJ56 VRS-CY1JF000J 1/16W M-Ox. RJ57 VRS-CY1JF000J 1/16W M-Ox. MAIN UNIT (Continued) RJ58 VRS-CY1JF000J 1/16W M-Ox. C1711 VCEA0A1CW476M J 47 RJ59 VRS-CY1JF000J 1/16W M-Ox. C1712 VCKYCY1CB104K J 0.1...
  • Page 28 27K-X2000 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTK9640WEK0 R820 VRS-CY1JF101J J 100 1/16W M-Ox. R821 VRS-CY1JF101J J 100 1/16W M-Ox. MAIN UNIT (Continued) R822 VRS-CY1JF101J J 100 1/16W M-Ox. R603 VRS-RG3LB120J M 12 M-Ox.
  • Page 29 27K-X2000 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTK9640WEK0 R2033 VRS-CY1JF471J J 470 1/16W M-Ox. R2034 VRS-CY1JF105J J 1M 1/16W M-Ox. MAIN UNIT (Continued) R2035 VRS-CY1JF153J J 15k 1/16W M-Ox. R1411 VRS-CY1JF102J J 1k 1/16W M-Ox.

  • Page 30: Crt Unit

    27K-X2000 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTK9640WEK0 PWB-B: DUNTK9510WEK0 MAIN UNIT (Continued) CRT UNIT MISCELLANEOUS PARTS TRANSISTORS å RY701 RRLYU0036CEZZ J Relay Q851 VS2SC3198-Y-1 J 2SC3198 Q852 VS2SC3789//2E M 2SC3789 RRLYU0038CEZZ å...

  • Page 31: Sub Unit

    27K-X2000 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-B: DUNTK9510WEK0 PWB-K: DUNTK9641WEK0 CRT UNIT (Continued) SUB UNIT TUNER R872 VRD-RA2BE221J J 220 1/8W Carbon å R873 VRS-VV3LB123J J 12k 3W M-Ox. NOTE: THE PARTS HERES SHOWN ARE SUPPLIED...
  • Page 32 27K-X2000 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-K: DUNTK9641WEK0 C3018 VCEA0A1HW105M J 1 C3025 VCKYCY1CB473K J 0.047 16V Ceramic SUB UNIT (Continued) C3027 VCKYCY1CB473K J 0.047 16V Ceramic CAPACITORS C3029 VCKYCY1HB682K J 6800p 50V Ceramic [EL.···...
  • Page 33 27K-X2000 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-K: DUNTK9641WEK0 PWB-L: DUNTK9657WEK0 SUB UNIT (Continued) SURROUND UNIT INTEGRATED CIRCUITS R901 VRS-CY1JF331J J 330 1/16W M-Ox. R903 VRS-CY1JF102J J 1k 1/16W M-Ox. IC3201 VHiAN5285K/-1 J AN5285K...
  • Page 34 27K-X2000 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-L: DUNTK9657WEK0 PWB-R: DUNTK9642WEK0 SURROUND UNIT (Continued) P-IN-P UNIT INTEGRATED CIRCUIT R3306 VRS-CY1JF104J J 100k 1/16W M-Ox. R3307 VRS-CY1JF103J J 10k 1/16W M-Ox. IC1801 VHiM65667FP-1 M M65667FP...
  • Page 35 27K-X2000 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-R: DUNTK9642WEK0 R1834 VRS-CY1JF223J J 22k 1/16W M-Ox. R1841 VRS-CY1JF153J J 15k 1/16W M-Ox. P-IN-P UNIT (Continued) R1842 VRS-CY1JF471J J 470 1/16W M-Ox. C1812 VCEA0A1HW106M J 10 R1843 VRS-CY1JF391J J 390 1/16W M-Ox.

  • Page 36: Miscellaneous Parts

    CCABA1307MES0 M Cabinet Ass'y, Front å QCNW-0089MEZZ M Connecting Cord Not Available – Front Cabinet — QCNW-0137MEZZ M Connecting Cord HBDGB1009MESA M Badge, "SHARP" QCNW-0196MEZZ M Connecting Cord JBTN-1101MEKA M Button, Power, Vol-up/down QCNW-0197MEZZ M Connecting Cord JBTN-1102MEKA M Button, CH-up/down...

  • Page 37: Packing Of The Set

    27K-X2000 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PACKING OF THE SET Polystyrene Bag Operation Manual Guarantee Card Infrared R/C Unit Batteries Polyethylene Sack Buffer Material FRONT Packing Case Use 2 tapes fix the packing case.
  • Page 38 Code Ref. No. Part No. Description Code COPYRIGHT © 1998 BY SHARP CORPORATION ALL RIGHTS RESERVED. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher.

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