Sony CDX-2250 / CDX-3500 Service Manual ▷ View online
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
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.
•
U
: B+ Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
•
C
: panel designation.
• Voltage is dc with respect to ground under no-signal
(detuned) condition.
no mark : FM
no mark : FM
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
tolerances.
4-6. SCHEMATIC DIAGRAM — DISPLAY SECTION —
– 29 –
– 30 –
CDX-2250/3500
(Page 36)
4-7. PRINTED WIRING BOARD — MAIN SECTION —
Ref. No.
Location
• Semiconductor Location
Ref. No.
Location
Note:
• X
: parts extracted from the component side.
•
¢
: internal component.
• b
: Pattern from the side which enables seeing.
• Abbreviation
CND : Canadian model.
– 31 –
– 32 –
CDX-2250/3500
Q102
B-5
Q201
B-5
Q202
B-5
Q401
B-5
Q402
B-5
Q601
D-6
Q602
D-6
Q605
C-6
Q606
C-6
Q801
D-3
Q901
D-1
Q902
C-1
Q904
D-1
Q905
C-1
Q906
D-1
Q907
C-1
Q908
B-2
Q909
B-3
Q910
E-1
Q911
E-2
Q912
E-1
Q913
E-1
Q915
B-1
Q916
C-1
Q917
E-1
Q918
D-1
D401
B-5
D402
B-1
D604
E-6
D701
D-2
D811
B-3
D812
B-2
D901
C-1
D902
B-1
D903
D-1
D904
E-1
D905
E-1
D906
B-1
D907
B-1
D908
B-2
D910
B-4
D911
B-1
D914
B-2
D916
A-3
D917
B-4
D918
A-3
IC401
C-4
IC402
A-4
IC701
C-2
IC801
E-4
Q101
B-5
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
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.
•
¢
: internal component.
•
C
: panel designation.
•
U
: 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
(
) : AM
<
> : CD PLAY
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Signal path.
F
: FM
f
: AM
J
: CD
• Abbreviation
CND : Canadian model.
4-8. SCHEMATIC DIAGRAM — MAIN SECTION (1/2) —
– 33 –
– 34 –
CDX-2250/3500
(Page 26)
– 35 –
– 36 –
4-8. SCHEMATIC DIAGRAM — MAIN SECTION (2/2) —
• Refer to page 37 for IC Block Diagrams.
CDX-2250/3500
(Page 29)
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