Sony CDX-C90R Service Manual ▷ View online
– 45 –
– 46 –
CDX-C90R
3-11. SCHEMATIC DIAGRAM — AUDIO SECTION (1/2) — • Refer to page 65 for IC Block Diagrams.
Note:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
%
: indicates tolerance.
•
U
: B+ Line.
•
V
: B– Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• Voltage is dc with respect to ground under no-signal
(detuned) condition.
no mark : FM
no mark : FM
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Signal path.
F
: FM
f
: MW
J
: CD
(Page 53)
(Page 56)
(Page 47)
– 47 –
– 48 –
CDX-C90R
3-12. SCHEMATIC DIAGRAM — AUDIO SECTION (2/2) —
Note:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
%
: indicates tolerance.
•
¢
: internal component.
•
C
: panel designation.
•
U
: B+ Line.
•
H
: adjustment for repair.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• Voltage is dc with respect to ground under no-signal
(detuned) condition.
no mark : FM
(
no mark : FM
(
) : MW
<
> : CD PLAY
[
] : PANEL MOTOR operation
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Signal path.
F
: FM
f
: MW
J
: CD
c
: digital out
• Abbreviation
G
: German model.
(Page 46)
(Page 53)
– 49 –
– 50 –
CDX-C90R
3-13. PRINTED WIRING BOARDS — MAIN SECTION —
Note:
• X
: parts extracted from the component side.
•
r
: Through hole.
•
¢
: internal component.
• b
: Pattern from the side which enables seeing.
(The other layer’s patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side:
Parts on the parts face side seen from the
(Side A)
parts face are indicated.
(
) : SIDE B
(IC504)
H-7
(IC505)
H-6
(IC600)
G-1
IC601
H-1
IC602
H-2
IC721
D-2
IC722
C-2
(IC761)
E-2
(IC771)
E-4
IC801
C-4
IC802
B-3
IC851
D-5
(IC901)
F-4
IC921
G-4
IC941
F-4
IC951
F-2
LED300
I-7
LED301
I-8
LED302
I-6
(Q300)
G-2
Q301
I-7
Q302
I-7
Q303
B-5
Q304
I-5
Q305
I-5
Q308
A-7
(Q309)
B-7
Q310
A-7
Q311
A-7
Q400
C-6
(Q401)
B-6
Q402
D-6
Q403
C-6
Q404
D-6
(Q405)
C-7
Q406
D-6
Q407
A-6
Q408
I-9
Q411
I-9
Q415
A-6
Q416
A-6
Q417
A-6
Q601
H-3
Q603
H-2
Q605
G-1
(Q702)
F-2
Q703
D-1
(Q704)
F-2
(Q721)
F-2
(Q722)
D-2
Q724
C-2
Q771
E-5
Q781
D-5
(Q791)
E-5
(Q792)
E-4
(Q801)
C-4
(Q802)
C-5
(Q803)
C-4
Q804
B-3
Q805
C-3
(Q851)
D-5
Q900
B-5
Q941
F-4
(Q991)
E-2
D300
H-5
D301
G-5
D302
A-7
(D303)
B-7
(D304)
B-8
(D305)
B-8
(D306)
B-7
(D309)
I-4
(D310)
I-4
(D311)
I-5
(D312)
F-7
D313
D-7
(D314)
E-8
(D370)
B-8
(D371)
B-8
(D372)
B-9
(D373)
B-9
(D374)
H-4
D400
B-6
D401
B-6
D402
D-6
(D403)
C-7
D404
C-6
D405
A-6
D406
G-7
(D409)
E-8
D410
A-5
D412
A-6
D414
A-5
D415
A-6
(D416)
A-4
(D417)
A-4
(D418)
A-4
(D419)
B-10
(D422)
B-4
D423
C-6
D424
E-8
D600
G-1
(D604)
G-2
(D605)
G-2
(D791)
E-5
D792
E-5
(D801)
C-5
D804
B-3
D900
B-5
IC1
I-9
(IC2)
E-10
(IC3)
D-7
(IC4)
B-7
IC5
C-8
IC6
C-9
(IC7)
E-8
(IC8)
E-10
(IC9)
E-10
(IC10)
F-10
(IC11)
H-10
IC300
E-6
(IC301)
G-7
IC302
A-7
IC303
F-7
(IC304)
H-4
IC400
C-6
IC500
H-6
IC501
I-6
(IC502)
H-6
IC503
H-7
Ref. No.
Location
• Semiconductor Location
Ref. No.
Location
(Page 62)
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CDX-C90R
(Page 35)
(Page 44)
(Page 43)
(Page 43)
(Page 61)
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