Exploded View - Sony XM-444 Service Manual

XM-444
• Semiconductor Location
Ref. No. Location Ref. No. Location
D101 F-12 Q203 F-9
D102 F-11 Q204 G-9
D201 F-10 Q205 F-9
D202 F-9 Q206 H-8
D301 C-10 Q207 G-8
D302 C-11 Q208 F-8
D401 D-7 Q209 F-8
D402 C-8 Q210 H-9
D801 E-3 Q211 H-8
D802 E-6 Q212 F-10
D803 D-3 Q301 D-10
D804 E-4 Q302 C-10
D805 D-5 Q303 C-10
D806 D-5 Q304 C-10
D851 D-9 Q305 C-10
D852 D-9 Q306 B-9
D901 F-3 Q307 C-9
D902 F-4 Q308 C-9
D903 H-7 Q309 C-9
D904 H-6 Q310 B-9
D905 E-10 Q311 B-10
D906 D-10 Q312 D-9
Q401 D-10
IC801 E-12 Q402 C-8
IC802 G-13 Q403 C-8
IC803 F-12 Q404 C-7
IC804 D-11 Q405 C-7
IC805 C-11 Q406 B-7
IC806 B-12 Q407 B-7
IC851 D-3 Q408 C-6
IC901 E-4 Q409 C-7
Q410 B-6
LD801 E-3 Q411 B-7
Q412 B-6
Q101 F-11 Q801 E-3
Q102 F-11 Q802 E-3
Q103 F-11 Q803 D-2
Q104 G-11 Q851 D-10
Q105 F-11 Q852 D-4
Q106 H-11 Q853 D-4
Q107 G-10 Q901 F-3
Q108 F-11 Q902 E-4
Q109 F-10 Q903 H-5
Q110 H-11 Q904 H-4
Q111 H-10 Q905 E-10
Q112 G-12 Q906 E-10
Q201 E-9 Q907 F-6
Q202 F-9 Q908 G-6
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
for schematic diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
1 / W or less unless otherwise
4
specified.
• 2 : nonflammable resistor.
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
• A : B+ Line.
• B : B– Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from +12V and REM terminals.
• Voltage is dc with respect to ground under no-signal
condition.
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: AUDIO
for printed wiring boards:
• X : parts extracted from the component side.
• : Pattern from the side which enables seeing.
• IC Block Diagram
IC901 µPC494GS-T1
16 15 14 13 12 11 10 9
REF. REG.
ERROR
0.1V
OSC
ERROR
1 2 3 4 5 6 7 8
NOTE:
• The mechanical parts with no reference
number in the exploded views are not supplied.
• Items marked "*" are not stocked since
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
3
8
2
1
Ref. No. Part No. Description
1 3-240-650-01 PLATE, BOTTOM
2 3-238-669-01 PANEL, FRONT
3 3-238-668-01 HEAT SINK (CHINESE MADE)
3 3-238-668-11 HEAT SINK (JAPAN MADE)
4 3-238-670-01 PANEL, REAR
5 A-3274-222-A AMP BOARD, COMPLETE
6 7-685-646-79 SCREW +BVTP 3X8 TYPE2 IT-3
12 12
SECTION 4

EXPLODED VIEW

• Color Indication of Appearance Parts
The components identified by
Example : mark 0 or dotted line with mark.
KNOB, BALANCE (WHITE) ... (RED) 0 are critical for safety.
R R
Replace only with part number
Parts Color Cabinet's Color
specified.
• Accessories are given in the last of this parts list.
5
10
10
12
12
11
6
F901
6
11
6
7
7
Remark Ref. No. Part No. Description
7 7-685-545-14 SCREW +BTP 3X6 TYPE2 N-S
8 3-240-642-01 HEAT SINK (SUB 2CH)
9 3-240-651-01 HEAT SINK (SUB 4CH)
10 3-225-184-01 SCREW (+PS.TT.3X6)
11 3-225-183-01 SCREW (+PSW.TT.3XL)
12 3-912-432-01 SCREW (+–B)
0 F901 1-533-743-11 FUSE (BLADE TYPE) (AUTO FUSE) 40A
4
6
9
11
6
Remark