21
70GS-64S
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 HAZ-
ARD OF ELECTRIC SHOCK.
DESCRIPTION OF SCHEMATIC DIAGRAM
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 mF, unless otherwise noted
(P= mmF).
4. The capacitor with Part No. RC-FZ9XXXBMNJ
is designed to with stand 63V.
5. The capacitor with Part No. RC-FZ4XXXBMNJ
is designed to with stand 50V.
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.
IMPORTANT SAFETY NOTE:
PARTS MARKED WITH « » ( ) ARE
IMPORTANT FOR MAINTAINING THE SAFETY
OF THE SET. BE SURE TO REPLACE THESE
PARTS WITH SPECIFIED ONES FOR MAINTAIN-
ING THE SAFETY AND PERFORMANCE OF THE
SET.
CAUTION
This circuit diagram is original one, therefore
there may be light difference from yours.
WAVEFORM MEASUREMENT CONDITION:
Colour bar generator signal of 70 dB from RF input.
!
200 Vpp 100 Hz 559Vpp
1.160Vpp 31,25KHz
2,8Vpp 31,25KHz
1
2
3
4
8
7
6
5
21 Vpp50Vpp 31,25KHz 1,145 Vpp 100 Hz 2,3V 100Hz
16,25Vpp 100Hz
23,8 Vpp 100Hz
400Hz (Audio output)
1 Vpp 15,625KHz
12
11
9
13
10
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