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29
29
HCD-LX9AV/LX10AV/LX90AV
7-8.
SCHEMATIC DIAGRAM – AUDIO Board –
•
See page 50 for IC Block Diagrams.
• Voltages are dc with respect to ground under no-signal
conditions.
no mark : TAPE PLAY
(
) : RECORD
PB LEVEL (L)
(DECK A)
PB LEVEL (R)
(DECK A)
PB LEVEL (L)
(DECK B)
PB LEVEL (R)
(DECK B)
PB EQ AMP
(DECK A)
PB EQ AMP
(DECK B)
SWITCHING
REC BIAS (L)
(DECK B)
REC BIAS (R)
(DECK B)
BIAS OSC
REC BIAS
-6.8
(PLAYBACK)
E
NC
A +7.5V
APB–LCH
APB–RCH
AGND
BPB–LCH
BPB–RCH
A –7.5V
–VBIAS (–7.5V)
+VBIAS (+7.5V)
B–REC–RCH
B–REC–LCH
TC–HEAD–GND
16
(Page 33)
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.