Plano de tv sharp14lv14

14LK14

SERVICE MANUAL
COLOR TELEVISION

Chassis No. GA-1'

MODEL

14LK14

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.

CONTENTS
Page » ELECTRICAL SPECIFICATIONS......................................................................................................... 1 » IMPORTANT SERVICE SAFETY PRECAUTION ................................................................................. 2 » LOCATION OF USER'S CONTROL ..................................................................................................... 4 » INSTALLATION AND SERVICE INSTRUCTIONS................................................................................ 5 » CHASSIS LAYOUT ............................................................................................................................. 13 » BLOCK DIAGRAM .............................................................................................................................. 14 » DESCRIPTION OF SCHEMATIC DIAGRAMS.................................................................................... 15 » PRINTED WIRING BOARD ASSEMBLIES ........................................................................................ 19 » REPLACEMENT PARTS LIST ............................................................................................................ 22 » PACKING OF THE SET...................................................................................................................... 27

ELECTRICAL SPECIFICATIONS
POWER INPUT ........................................ 110-120 V AC 50/60 Hz POWER RATING .................................................................... 53 W PICTURE SIZE ........................................... 574cm (88.97sq inch) CONVERGENCE ............................................................. Magnetic SWEEPDEFLECTION .................................................... 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 (Nominal) AUDIO POWER OUTPUT RATING ................................... 1W (at 10% distortion)
2

SPEAKER SIZE .........................................................................9 cm x 5 cm VOICE COIL IMPEDANCE ............................. 32 ohm at 400 Hz ANTENNA INPUT IMPEDANCE VHF/UHF ..................................................... 75 ohm Unbalanced TUNING RANGESVHF-Channels ............................................................... 2 thru 13 UHF-Channels ............................................................ 14 thru 69 CATV Channels ........................................................... 1 thru 125

Specifications are subject to change without prior notice.

SHARP CORPORATION

14LK14

IMPORTANT SERVICE SAFETY PRECAUTION
Ë 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 receiverhas two ground systems which are separated by insulating material. The nonisolated (hot) ground system is for the B+ voltage regulator circuit and the horizontal output circuit. The isolated ground system is for the low B+ DC voltages and the secondary circuit of the high voltage transformer. To prevent electrical shock use an isolation transformer between the line cord and power receptacle, when...