Sony CDX-V7800X Service Manual ▷ View online
33
33
3-11. SCHEMATIC DIAGRAM — MAIN SECTION (1/2) — • Refer to page 40 for IC Block Diagrams.
Note:
• Voltage is dc with respect
• Voltage is dc with respect
to ground under no-signal
(detuned) condition.
no mark : FM
(
(detuned) condition.
no mark : FM
(
) : AM
<
> : AUDIO CD PLAY
(Page 34)
CDX-V7800X
(Page 31)
34
34
3-12. SCHEMATIC DIAGRAM — MAIN SECTION (2/2) — • Refer to page 36 for Waveforms. • Refer to page 40 for IC Block Diagrams.
(Page 33)
CDX-V7800X
Note:
• Voltage is dc with respect to
• Voltage is dc with respect to
ground under no-signal
(detuned) condition.
no mark : FM
(
(detuned) condition.
no mark : FM
(
) : AM
<
> : AUDIO CD PLAY
∗
: Impossible to measure
(Page 36)
35
35
CDX-V7800X
LIGHT GREEN
PERK
3-13. PRINTED WIRING BOARD — MAIN SECTION —
(Page 37)
(Page 29)
IC902
A-8
IC903
C-14
IC904
G-12
Q401
E-6
Q402
E-6
Q403
C-5
Q404
C-4
Q405
B-3
Q406
C-4
Q407
D-9
Q601
G-3
Q602
G-3
Q603
D-3
Q604
E-3
Q606
H-3
Q607
H-2
Q901
B-13
Q902
A-12
Q903
H-11
Q904
G-11
Q905
G-13
Q906
H-13
Q907
I-13
Q908
I-12
Q909
D-11
Q911
I-11
Q912
I-11
Q913
F-11
Q914
F-12
Q915
F-11
Q916
E-11
Q917
J-12
Q918
J-12
Q919
J-10
Q920
K-10
Q921
I-13
Q922
I-11
Q923
E-11
Q924
F-10
• Semiconductor Location
Ref. No.
Location
D401
F-4
D402
D-6
D403
D-6
D407
C-11
D408
C-11
D409
F-7
D410
A-5
D602
F-2
D603
G-2
D604
I-2
D605
I-3
D801
J-3
D802
G-11
D803
J-2
D804
J-3
D805
K-5
D806
K-5
D807
J-3
D808
K-5
D809
K-5
D810
K-5
D902
H-12
D903
H-13
D904
I-13
D905
D-10
D908
I-11
D909
F-13
D910
F-12
D911
E-12
D912
E-12
D913
E-12
D914
G-12
D919
A-14
D920
A-13
D921
D-10
D922
J-13
D923
I-12
IC401
E-4
IC801
I-7
IC901
F-13
Ref. No.
Location
36
36
CDX-V7800X
3-14. SCHEMATIC DIAGRAM — RELAY SECTION —
(Page 34)
(Page 39)
• Waveforms (Main board)
4.5MHz
IC801
uh
1
2.1Vp-p
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