Read Sony XM-222 Service Manual online
– 9 –
– 10 –
Note on Schematic Diagram:
• 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 14.4 V and fed with regulated dc power
supply from REM OUT/+12V/GND terminal (CN951).
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
• 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
r
IC Block Diagram
IC951
µ
PC494GS
4
1
2
3
5
6
7 8
9
10
16 15
14
13
12 11
ERROR
0.1V
REG.
REF.
OSC
ERROR
r
Waveforms
1
3
2
4
13.47 Vp-p
33.2
µ
sec
13.5 Vp-p
33.2
µ
sec
33.2
µ
sec
29.5 Vp-p
33.2
µ
sec
52.3 Vp-p
SECTION 3
EXPLODED VIEW
NOTE :
• Items marked “ * ”are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
delay should be anticipated when ordering
these items.
• The mechanical parts with no reference
number in the exploded views are not
supplied.
supplied.
• Hardware (# mark) list and accessories and
packing materials are given in the last of this
parts list.
parts list.
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
* 1
3-913-009-01 PLATE, BOTTOM
* 2
3-009-564-41 PANEL (FRONT)
* 3
3-009-591-11 HEAT SINK
* 4
3-031-112-01 PANEL (REAR)
* 5
A-3317-297-A MAIN BOARD, COMPLETE
* 6
3-385-420-01 HEAT SINK (SUB)
7
3-912-432-01 SCREW M4X8
CN952
1-537-479-11 TERMINAL (FOR F951)
CN953
1-537-479-11 TERMINAL (FOR F951)
F951
1-532-982-11 FUSE (BLADE TYPE) (AUTO FUSE) (15A)
#2
#2
#1
#1
#3
CN952, 953
#3
#3
#3
#5
#5
#2
#2
#3
#2
#2
#1
#1
#4
#4
#4
F951
3
2
1
4
5
7
7
6
6
(including
CN952, 953)
CN952, 953)
Click on the first or last page to see other XM-222 service manuals if exist.