Yamaha a 760

Page 1

IO

(I)
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I FRONT PANEL

(B Q 9 ID

0 POWER (power pushswitch)

0 LISTENING LEVEL MONITOR (indicator)
0 MAIN DIRECT (tone amp bypass pushwitch)
0 DISC (phonb disc selector pushswitch)

0 VOLUME (volume control)

0 SPEAKER (speaker selector switch)

0 PHONES (headphone jack)

0 BASS (bass control)

0 TREBLE (treble control)

ID

w HIGH FILTER (high filter in/out pushSWitch)

ID LOUDNESS (loudness control)

ID BALANCE (balance control)

IE MODE (mode selector pushswitch)

III PHONO (phono input SEIECtors/indicators (MM/
MCI)

{E REC OUT (recording output selector switch)

® INPUT (input selector)

I CONTENTS
REAR PANEL/INTERNAL VIEW .................................. I ................. 1
DISASSEMBLY........,...l.......t..........: .............................. 2
ADJUSTMENT/ADJUSTING POINTS ................................................ 4
BLOCK DIAGRAM/SPECIFICATIONS .. . . ._ ............................... ........... 5
WIRING ..................................................... f I / ........... 6
CONTROL C. BOARD/SCHEMATIC DIAGRAM (General model) .............................. 7
CONTROL C. BOARD/SCHEMATIC DIAGRAM (British, Australian, North European model) ........... 8
SCHEMATIC DIAGRAM ......................................................... 9

0044 7

YAMAHA

NIPPON GAKKI (30.. LTD. HAMAMATSU JAPAN

'801 1. 2.42K KT. / ® Pnted In Japan

SINCE 1887

Page 2

A-760

I REAR PANEL

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0 GND (ground terminal)

9 PHONO (phono input jacks)
0 TUNER (tuner input jacks)
0 AUX (auxiliary input jacks)

I INTERNAL VIEW

Top View

0 AC outlet
6 Power cord
9 Power transformer housing (power transformer:
GA63580)
0 Main C. board (3) NA07490-3
9 Heat sink
6 Power transistorls)
i 0 Main c. board (1) NA07490-1
6) Function C. board NA07486
9 Tone control C. board (3) NAO7488-3
IE Tone control C. board (2) NA07488-2

9 TAPE 1/2 (Tape 1/2 record/playback jacks)

9 SPEAKER (speaker terminals NB)

0 AC OUTLETS (switched and unswitched

auxiliary outlets)
0 Power cord

(I) DISC switch

IE Phono indicator LED

{E MAIN DIRECT switch

«I Tone control C. board (1) NAO7488-1
ID Main C. board (4) NA07490-4

(E Main C. board (2) NAO7490-2

m Power pushswitch

IE Control C. board (1) NAO7495-l

IE Control C. board (2) NAO7495<2