Description Of Schematic Diagram - Sharp 14U10 Service Manual

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 .
30