Yamaha m 70 1
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Extracted text from yamaha m 70 1 (Ocr-read)
Page 1
STEREO POWER AMPLIFIER
S7.
SERVICE MANUAL
.FRONT PANEL
® YAMAHA mam m ma
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O 0 0
0 POWER SWITCH 0 RANGE INDICATOR
9 PROTECTION INDICATOR 0 PEAK POWER INDICATORS
9 PEAK HOLD SWITCH 0 SPEAKER SELECTION SWITCHES
0 RANGE SELECTION SWITCH 9 SPEAKER LEVEL CONTROL
0 METER OFF SWITCH
.CON'I'EN'I'S
REAR PANELS ................................................................... 1
SPECIFICATIONS ................................................................. 2
INTERNAL VIEW ................................................................. 3
DISASSEMBLY PROCEDURES ........................................................ 3
ADJUSTMENT ................................................................... 6
CONTROL C. BOARD/SCHEMATIC DIAGRAM (General model) ................................. 9
CONTROL C. BOARD/SCHEMATIC DIAGRAM (British, Australian and European modem ................ 10
BLOCK DIAGRAM ................................................................ 11
PRINTED CIRCUIT BOARD .......................................................... 12
WIRING DIAGRAM ................................................................ 13
SCHEMATIC DIAGRAM ............................................................. 14
O YAMAHA
004452 NIPPON GAKKI CO. LTD. HAMAMATSU JAPAN
aned "1 Japan 2.8? I: Q 2.65K
Page 2
IREAR PANELS
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V EUROPEAN MODEL
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GINPUT TERMINAL
@GND TERMINAL
ESPEAKER TERMINAL A
OSPEAKER TERMINAL 8
9 AC OUTLET
0 VOLTAGE SELECTOR