Sony XR-CA624X Service Manual ▷ View online
XR-CA624X
17
17
2.6 Vp-p
21.6
µ
s
3.2 Vp-p
54.2 ns
5.1 Vp-p
30.6
µ
s
SECTION 6
DIAGRAMS
6-1.
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Schematic Diagram:
• 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.
•
C
: panel designation.
•
A
: B+ Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
(
no mark : FM
(
) : AM
[
] : TAPE PLAYBACK
∗
: 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.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: AM
E
: TAPE PLAYBACK
L
: BUS AUDIO IN
Note on Printed Wiring Board:
•
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
: Pattern from the side which enables seeing.
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side)
the parts face are indicated.
• Waveforms
– MAIN Board –
– MAIN Board –
1
IC501
qs
(OSCOUT)
2
IC501
qh
(XOUT)
– KEY Board –
3
IC501
uf
(OSC)
XR-CA624X
18
18
D1
F-12
D351
I-13
D352
I-13
D501
K-8
D502
G-10
D552
H-12
D553
K-9
D581
G-13
D582
E-12
D584
C-14
D585
C-13
D586
C-13
D610
F-10
D611
F-10
D614
E-11
D622
E-7
D701
L-4
D702
K-4
D703
K-4
D704
K-5
D705
L-3
D706
G-5
D707
K-3
D708
K-3
D709
L-3
D710
L-4
D711
L-3
D712
G-5
D721
D-9
D722
E-9
D723
D-10
D724
E-9
D731
E-8
D732
E-9
D733
E-9
D734
D-10
D781
E-13
IC301
J-5
IC331
G-5
IC351
J-14
IC501
I-9
IC551
L-11
IC581
E-12
IC611
G-14
IC751
C-8
Q171
C-5
Q181
C-4
Q271
C-6
Q281
C-5
Q351
J-13
Q352
I-13
Q353
I-12
Q354
H-13
Q551
K-8
Q571
E-9
Q581
G-13
Q601
K-13
Q602
K-14
Q621
F-7
Q622
F-8
Q631
L-6
6-2.
PRINTED WIRING BOARD – MAIN Board –
• Semiconductor
Location
Ref. No.
Location
(Page 22)
(FM/AM TUNER UNIT)
FM/AM
ANTENNA IN
AUDIO OUT
REAR
BUS AUDIO
IN
25
1
2
24
IC751
BUS CONTROL IN
CN581
(REMOTE IN)
(NOSE DETECT)
SUB BOARD
1-680-157-
11
MAIN BOARD
A
CN301
3
2
1
B
C
D
E
F
G
H
I
J
K
L
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
XR-CA624X
19
19
6-3.
SCHEMATIC DIAGRAM – MAIN Board (1/3) –
•
See page 23 for IC Block Diagram.
(Page 20)
(Page 21)
XR-CA624X
20
20
6-4.
SCHEMATIC DIAGRAM – MAIN Board (2/3) –
•
See page 17 for Waveforms.
•
See page 23 for IC Block Diagrams.
(Page 21)
(Page 19)
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