Sony HCD-GRX9900 / HCD-RXD9 / MHC-GRX9900 / MHC-RXD9 Service Manual ▷ View online
HCD-GRX9900/RXD9
– 39 –
– 40 –
The components identified by mark
!
or dotted
line with mark
!
are critical for safety.
Replace only with part number specified.
7-11.
SCHEMATIC DIAGRAM – AUDIO Board –
•
See page 68 for IC Block Diagram.
• Voltages are dc with respect to ground under no-signal
conditions.
no mark : TAPE PLAY
(
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)
D
(Page 49)
HCD-GRX9900/RXD9
– 41 –
– 42 –
05
DECK A
PLUNGER
DECK B
PLUNGER
(DECK A PLAY)
(DECK A HALF)
(DECK A 120/70)
(DECK A REC)
(DECK B HALF)
(DECK B PLAY)
(DECK B 120/70)
(DECK B REC)
21
21
E
4
1
2
3
4
1
2
3
(
)
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)
E
CONTROL SWITCH
7-12.
PRINTED WIRING BOARD – LEAF SW Board –
•
See page 28 for Circuit Boards Location.
7-13.
SCHEMATIC DIAGRAM – LEAF SW Board –
• Voltages are dc with respect to ground under no-signal
conditions.
no mark : TAPE PLAY
(
no mark : TAPE PLAY
(
) : RECORD
∗
: Impossible to measure
(Page 49)
(Page 43)
Q113
E-9
Q161
C-9
Q162
C-9
Q163
E-9
Q191
E-12
Q192
E-10
Q201
D-9
Q251
C-9
Q331
C-1
Q332
C-2
Q333
C-2
Q334
C-2
Q335
D-1
Q336
F-1
Q337
F-1
Q338
F-1
Q339
F-1
Q340
E-1
Q341
E-1
Q342
F-1
Q343
E-1
Q401
F-12
Q402
E-12
Q411
G-2
Q412
G-3
Q431
G-12
Q432
G-11
Q433
F-11
Q434
F-11
Q435
F-11
Q436
F-11
Q437
G-12
Q439
F-12
Q471
F-2
Q501
D-7
Q508
D-7
Q509
E-7
Q801
H-10
Q803
G-10
Q804
G-9
Q831
G-10
Q832
G-10
Q851
J-10
Q881
I-9
Q901
H-2
Q902
I-1
Q903
H-1
Q904
G-4
Q905
G-4
Q907
G-5
Q908
G-4
Q909
I-4
Q913
H-1
Q914
G-2
Q923
H-1
Q951
G-2
Q952
H-1
Ref. No.
Location
Ref. No.
Location
D141
E-10
D191
E-12
D331
E-1
D333
F-1
D334
E-1
D335
F-1
D401
G-11
D403
F-12
D405
H-6
D406
J-4
D407
I-2
D411
G-3
D501
D-7
D502
E-6
D503
D-6
D504
D-7
D505
D-7
D506
D-7
D509
F-2
D607
E-5
D644
C-8
D801
J-11
D802
G-9
D803
G-11
D831
I-6
D832
J-7
D851
J-10
D852
G-9
D881
H-9
D901
J-4
D902
J-4
D903
J-4
D904
I-4
D905
I-1
D906
H-1
D907
J-5
D908
I-5
D909
J-5
D910
J-5
D915
I-4
D921
H-4
D922
G-4
D923
G-4
D924
F-2
D925
G-4
IC101
C-10
IC301
B-3
IC381
A-12
IC501
D-5
IC502
D-7
IC801
H-10
IC901
G-6
IC902
G-4
IC903
H-4
Q111
D-10
Q112
D-10
• Semiconductor Location
HCD-GRX9900/RXD9
– 43 –
– 44 –
7-14.
PRINTED WIRING BOARD – MAIN Board –
•
See page 28 for Circuit Boards Location.
(RXD9)
(GRX9900)
(Page 61)
(Page 30)
(Page 33)
(Page 33)
(Page 38)
(Page 41)
(Page 53)
(Page 61)
(Page 61)
(Page 63)
HCD-GRX9900/RXD9
– 45 –
– 46 –
7-15.
SCHEMATIC DIAGRAM – MAIN Board (1/4) –
• 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
(Page 50)
(Page 36)
(Page 36)
(Page 31)
(Page
51)
(Page
47)
Click on the first or last page to see other HCD-GRX9900 / HCD-RXD9 / MHC-GRX9900 / MHC-RXD9 service manuals if exist.