SHARP 81FW53E
Service Manual

DESCRIPTION OF SCHEMATIC DIAGRAM
SAFETY NOTE: 1. DISCONNECT THE AC PLUG FROM THE AC OUTLET BEFORE REPLACING PARTS. 2. SEMICONDUCTOR HEAT SINKS SHOULD BE REGARDED AS POTENTIAL SHOCK HAZARDS WHEN THE CHASSIS IS OPERATING.

60FW-53E 70FW-53E 81FW-53E

NOTE: 1. The unit of resistance «ohm»is omitted (K=1000 ohms. M= Megaohm). 2. All resistors are 1/8 watt. unless otherwise noted. 3. All capacitors are µF, unless otherwise noted (P= µµF). 4. The capacitor with Part No. RC-FZ9XXXBMNJ is designed to with stand 63V.

IMPOTANT SAFETY NOTE: PARTS MARKED WITH « »( ) ARE IMPORTANT FOR MAINTAINING THE SAFETY OF THE SET. BE SURE TO REPLACE THESE PARTS WITH SPECIFIED ONES FOR MAINTAINING THE SAFETY AND PERFORMANCE OF THE SET. SERVICE PRECAUTION: THE AREA ENCLOSED BY THIS LINE ( ) IS DIRECTLY CONNECTED WITH AC MAINS VOLTAGE. WHEN SERVICING THE AREA, CONNECT AN ISOLATING TRANSFORMER BETWEEN TV RECEIVER AND AC LINE TO ELIMINATE HAZARD OF ELECTRIC SHOCK.

CAUTION This circuit diagram is original one, therefore there may be light difference from yours.

WAVEFORM MEASUREMENT CONDITION: Colour bar genetator signal of 70 dB from RF input.

1

2

3

4

580V

1.3 KV 15.625KHz

4 Vp-p 15.625KHz

215 Vp-p

50Hz

5

6

7

8

41 Vp-p 15.625KHz

1.8 Vp-p

50Hz

3.3V 50Hz

45 Vp-p 113 KHz FM

9

10

11

12

19V 50Hz

20.5 Vp-p 50Hz

13

1.15 Vp-p 15.625KHz

400Hz

400Hz

24