Schematic Diagram - Audio Board - Sony MHC-GRX990 Service Manual

7-11. SCHEMATIC DIAGRAM – AUDIO Board – •
(PLAYBACK)
REC BIAS (R)
(DECK B)
See page 68 for IC Block Diagram.
PB EQ AMP
(DECK A)
PB LEVEL (L)
(DECK A)
PB LEVEL (R)
(DECK A)
PB EQ AMP
(DECK B)
PB LEVEL (L)
(DECK B)
PB LEVEL (R)
(DECK B)
SWITCHING
REC BIAS (L)
(DECK B)
REC BIAS
-6.8
BIAS OSC
– 39 –
D (Page 49)
• Voltages are dc with respect to ground under no-signal
conditions.
no mark : TAPE PLAY
( ) : RECORD
– 40 –
HCD-GRX9900
The components identified by mark ! or dotted
line with mark ! are critical for safety.
Replace only with part number specified.