23
72FF-57E
81FF-57E
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.
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.
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 PERFORMAN-
CE OF THE SET.
!
WAVEFORM MEASUREMENT CONDITION:
Colour bar genetator signal of 70 dB from RF input.
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
µ
F, unless otherwise noted
(P=
µµ
F).
4. The capacitor with Part No.
RC-FZ9XXXBMNJ is designed to with stand
63V.
NOTE:
1
2
10
3
4
5
6
7
8
9
616 Vp-p 63.75KHz
1.29 Vp-p 31.25KHz
2 Vp-p 100Hz
67 Vp-p 100Hz
2 Vp-p 100Hz
208 Vp-p 100Hz
155 mVp-p 400Hz
14.5 Vp-p 400Hz
(Audio Out)
1.1Vp-p 50Hz
5.6 Vp-p 31.25KHz
Summary of Contents for 72FF-57E
Page 18: ...18 72FF 57E 81FF 57E 1 I H G F E D C B A 2 3 4 5 6 7 POWER SWITCH UNIT PRINTED WIRING BOARDS ...
Page 19: ...19 72FF 57E 81FF 57E 1 I H G F E D C B A 2 3 4 5 6 7 SOUND OUTPUT UNIT PRINTED WIRING BOARDS ...
Page 22: ...22 72FF 57E 81FF 57E 1 I H G F E D C B A 2 3 4 5 6 7 100Hz UNIT PRINTED WIRING BOARDS ...
Page 24: ...24 72FF 57E 81FF 57E 1 I H G F E D C B A 2 3 4 5 6 7 Page 25 MOTHER UNIT 1 SCHEMATIC DIAGRAM ...
Page 34: ...34 72FF 57E 81FF 57E 1 I H G F E D C B A 2 3 4 5 6 7 POWER SWITCH UNIT SCHEMATIC DIAGRAM ...
Page 35: ...35 72FF 57E 81FF 57E FRONT A V UNIT SCHEMATIC DIAGRAM 1 I H G F E D C B A 2 3 4 5 6 7 ...
Page 36: ...36 72FF 57E 81FF 57E 1 I H G F E D C B A 2 3 4 5 6 7 Page 37 SCART UNIT SCHEMATIC DIAGRAM ...
Page 38: ...38 72FF 57E 81FF 57E 1 I H G F E D C B A 2 3 4 5 6 7 Page 39 100Hz UNIT SCHEMATIC DIAGRAM ...
Page 40: ...40 72FF 57E 81FF 57E SOUND OUTPUT UNIT SCHEMATIC DIAGRAM 1 I H G F E D C B A 2 3 4 5 6 7 9 8 ...
Page 41: ...41 72FF 57E 81FF 57E 72FF 57E BLOCK DIAGRAM 1 I H G F E D C B A 2 3 4 5 6 7 ...
Page 42: ...42 72FF 57E 81FF 57E 1 I H G F E D C B A 2 3 4 5 6 7 81FF 57E BLOCK DIAGRAM Page 43 ...
Page 43: ...43 72FF 57E 81FF 57E 8 9 10 11 12 13 14 I H G F E D C B A 81FF 57E BLOCK DIAGRAM Page 42 ...
Page 44: ...44 72FF 57E 81FF 57E 1 I H G F E D C B A 2 3 4 5 6 7 PWBs LAYOUT ...
Page 45: ...45 72FF 57E 81FF 57E 1 I H G F E D C B A 2 3 4 5 6 7 SCHEMATIC DIAGRAMS CONECTION ...
Page 59: ...59 72FF 57E 81FF 57E NOTES ...
