Sony HCD-XG100AV / HCD-XG900AV Service Manual ▷ View online
HCD-XG100AV/XG900AV
29
29
C
MAIN BOARD
(2/3)
CN303
PB LEVEL (L)
(DECK A)
PB LEVEL (L)
(DECK B)
REC BIAS (L)
(DECK B)
REC BIAS (R)
(DECK B)
–7
–7
6.9
6.9
–6.5
–6.5
–6.5
–6.5 (–7.2)
(PALYBACK)
PB EQ AMP
(DECK A)
PB EQ AMP
(DECK B)
SWITCHING
T621
BIAS OSC
REC BIAS
NC
A+7.5V
APB-LCH
APB-RCH
AGND
BPB-LCH
BPB-RCH
A–7.5V
–VBIAS (–7.5V)
+VBIAS (+7.5V)
BREC-RCH
BREC-LCH
TC-HEAD-GND
R492 1.5K
R491 820
R482 1.5K
R481 820
7-12. SCHEMATIC DIAGRAM – AUDIO Board –
•
See page 49 for IC Block Diagram.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : TAPE PLAY
(
no mark : TAPE PLAY
(
) : RECORD
(Page 32)
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
HCD-XG100AV/XG900AV
30
30
DECK A
PLUNGER
DECK B
PLUNGER
(DECK A PLAY)
(DECK A HALF)
(DECK A 120/70)
(DECK A REC)
MAIN BOARD
CN304
(DECK B HALF)
(DECK B PLAY)
(DECK B 120/70)
(DECK B REC)
11
11
D
4
1
2
3
4
1
2
3
(
)
1-676-219-
7-13. PRINTED WIRING BOARD – LEAF SW Board –
•
See page 23 for Circuit Boards Location.
D
MAIN BOARD
(2/3)
CN304
*
(3.7)
*
4.5
( )
DECK B
PLUNGER
DECK A
PLUNGER
(CAPSTAN)
(DECK A 120/70)
(DECK A HALF)
(DECK A REC)
(DECK B HALF)
(DECK B REC)
(DECK B 120/70)
ROTATION DETECT SENSOR
(DECK A)
ROTATION DETECT
SENSOR (DECK B)
(DECK A PLAY)
(DECK B PLAY)
CONTROL SWITCH
CAPM–
CAPM+
CAPM–H/L
A–TRGM
TRGM–GND
B–TRGM
A–SHUT
DGND
A–HALF
+5V
A–120/70
B–SHUT
A–PLAY
B–HALF / REC–A / REC–B
B–120/70
B–PALY
NC
7.5k
7-14. SCHEMATIC DIAGRAM – LEAF SW Board –
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : TAPE PLAY (DECK A)
(
no mark : TAPE PLAY (DECK A)
(
) : TAPE PLAY (DECK B)
∗
: Impossible to measure
(Page 34)
(Page 32)
HCD-XG100AV/XG900AV
31
31
7-15. SCHEMATIC DIAGRAM – MAIN Board (1/3) –
•
See page 49 for IC Block Diagram.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : TUNER (FM/AM)
(
no mark : TUNER (FM/AM)
(
) : VIDEO
(Page 41)
(Page 33)
(Page 32)
(Page 32)
(Page 32)
(Page 39)
(Page 33)
HCD-XG100AV/XG900AV
32
32
7-16. SCHEMATIC DIAGRAM – MAIN Board (2/3) –
•
See page 35 for Waveforms.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : TUNER (FM/AM)
(
no mark : TUNER (FM/AM)
(
) : CD PLAY
<
> : VIDEO
{
} : TAPE PLAY (DECK A)
[
] : TAPE PLAY (DECK B)
〈〈
〉〉
: RECORD
∗
: Impossible to measure
(Page 31)
(Page 29)
(Page 30)
(Page 33)
(Page 31)
(Page 33)
(Page 31)
(Page 33)
(Page 43)
(Page 25)
(Page 27)
(Page
33)
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