31
20D2-S/G
21D1-S/G
21D2-S/G
DESCRIPTION OF SCHEMATIC DIAGRAM
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
"
( ) ARE IMPOTANT 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 TRANS-
FORMER BETWEEN TV RECEIVER AND AC LINE TO ELIMINATE
HAZARD OF ELECTRIC SHOCK.
NOTES:
1. The unit of resistance "ohm" is omitted.
(K = 1000 ohms, M = Mega ohm).
2. All resistors are 1/10 watt, unless otherwise noted.
3. All capacitors are
µ
F, unless otherwise noted. (P =
µµ
F).
VOLTAGE MEASUREMENT CONDITIONS:
1. Voltages in parenthesis measured with no signal.
2. Voltages without parenthesis measured with 3mV B & W or Col-
our signal.
3. All the voltages in each point are measured with VTVM.
WAVEFORM MEASUREMENT CONDITIONS:
1. The colour bar generator signal of 2.0V peak applied at of Base
Video Buffer Amp. Q252.
2. Approximately 4V AGC bias .
Summary of Contents for 20D2-G
Page 22: ...22 20D2 S G 21D1 S G 21D2 S G CHASSIS LAYOUT 20D2 S G ...
Page 23: ...23 20D2 S G 21D1 S G 21D2 S G CHASSIS LAYOUT 21D1 S G ...
Page 24: ...24 20D2 S G 21D1 S G 21D2 S G CHASSIS LAYOUT 21D2 S G ...
Page 25: ...25 20D2 S G 21D1 S G 21D2 S G BLOCK DIAGRAM CRT UNIT 20D2 S G CRT UNIT 21D1 S G 21D2 S G ...
Page 27: ...20D2 S G 21D1 S G 21D2 S G 20D2 S G 21D1 S G 21D2 S G BLOCK DIAGRAM MAIN UNIT 21D1 S G 28 29 ...
Page 28: ...30 20D2 S G 21D1 S G 21D2 S G BLOCK DIAGRAM HEADPHONE JACK UNIT ...
