Sharp 14U10 Service Manual - Page 28

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14U10/15

14U20/25

SAFETY NOTES:

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 OP-

ERATING.

IMPORTANT SAFETY NOTICE:

PARTS MARKED WITH " å " (

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 TRANS-

FORMER BETWEEN TV RECEIVER AND AC LINE TO ELIMINATE

HAZARD OF ELECTRIC SHOCK.

DESCRIPTION OF SCHEMATIC DIAGRAM

) ARE IMPOTANT FOR

NOTES:

1. The unit of resistance "ohm" is omitted.

(K = 1000 ohms, M = Mega ohm).

2. All resistors are 1/16 watt, unless otherwise noted.

3. All capacitors are µ F, unless otherwise noted. (P = µµ F).

VOLTAGE MEASUREMENT CONDITIONS:

1. Voltage in parenthesis measured with no signal.

2. Voltages without parenthesis measured with PAL Colour-Signal.

3. All the voltages in each point are measured with high impedance

volt-meter.

WAVEFORM MEASUREMENT CONDITIONS:

1. Colour bar generator signal of 2.5V peak to peak applied of Base

at Video Buffer Amp. Q203.

2. Approximately 4.0V AGC bias .