Read Sony XR-C7350X Service Manual online
XR-C7350X
15
15
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
For schematic diagrams.
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.
•
C
: panel designation.
•
U
: 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
( ) : AM (MW/SW)
< > : TAPE PLAYBACK
no mark : FM
( ) : AM (MW/SW)
< > : 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.
• Signal path.
F
: FM
f
: AM (MW/SW)
E
: TAPE PLAYBACK
For printed wiring boards.
Note:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
• b
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Conductor Side) pattern face are indicated.
Parts face side:
Pattern face side: Parts on the pattern face side seen from the
(Conductor Side) pattern face are indicated.
Parts face side:
Parts on the parts face side seen from the
(Component Side ) parts face are indicated.
1
2
WAVEFORMS
– MAIN BOARD –
– MAIN BOARD –
IC501
qd
(OSC IN)
IC501
qg
(X IN)
30.5
µ
sec
2.2Vp-p
1
– KEY BOARD –
IC901
y;
(OSC)
0.58
µ
sec
1.1Vp-p
27
µ
sec
2.7Vp-p
7-3.
PRINTED WIRING BOARD – PRE OUT BOARD –
7-2.
SCHEMATIC DIAGRAM – PRE OUT BOARD –
(Page 17)
A
(Page 16)
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