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25K-S100/180/S100/S180 CK25M10,CK25S18

SERVICE MANUAL
S20L625K-M100

COLOR TELEVISION

Chassis No. SN-81

25K-M100/180 CK25M10

25K-S100/180 CK25S18

MODELS

25K-M100/180, 25K-S100/180 CK25M10, CK25S18

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 thosespecified should be used.

CONTENTS
Page » ELECTRICAL SPECIFICATIONS........................................................................................................ 1 » IMPORTANT SERVICE SAFETY PRECAUTION ............................................................................... 2 » LOCATION OF USER'S CONTROL.................................................................................................... 6 » INSTALLATION AND SERVICE INSTRUCTIONS ............................................................................ 10 » CHASSIS LAYOUT ........................................................................................................................... 16 » BLOCK DIAGRAM............................................................................................................................ 19 » SCHEMATIC DIAGRAMS ................................................................................................................. 22 » PRINTED WIRING BOARD ASSEMBLIES ....................................................................................... 37 » REPLACEMENT PARTS LIST.......................................................................................................... 42 » PACKING OF THE SET .................................................................................................................... 57

ELECTRICAL SPECIFICATIONS
POWER INPUT ................................................... 120 V AC 60 Hz POWER RATING .................................................................. 115 W PICTURE SIZE........................................... 2,032cm2 (315sq inch) CONVERGENCE ............................................................. Magnetic SWEEP DEFLECTION ..................................................... Magnetic FOCUS ............................................... Hi-Bi-Potential Electrostatic INTERMEDIATE FREQUENCIES Picture IF Carrier Frequency ..................................... 45.75 MHz Sound IFCarrier Frequency ...................................... 41.25 MHz Color Sub-Carrier Frequency ..................................... 42.17 MHz (Nominal) AUDIO POWER 25K-M100/180, CK25M10 .. 1.3W +1.3W (at 10% distortion and Dual CH Operate) 25K-S100/180, CK25S18 ............... 1.3W (at 10% distortion and Dual CH Operate) SPEAKER SIZE...................................................................... 8 cm (Round) 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 (EIA, Channel Plan U.S.A.)

Specifications are subject to change without prior notice.

SHARP CORPORATION
1

This document has been published to be used for after sales service only. The contents are subject to change without notice.

25K-S100/180/S100/S180 CK25M10,CK25S18

IMPORTANT SERVICE SAFETY PRECAUTION
Service workshould be performed only by qualified service technicians who are thoroughly familiar with all safety checks and the servicing guidelines which follow: WARNING
1. For continued safety, no modification of any circuit should be attempted. 2. Disconnect AC power before servicing. 3. Semiconductor heat sinks are potential shock hazards when the chassis is operating. 4. The chassis in this receiver...