Read Sony XM-405EQX Service Manual online
– 11 –
– 12 –
Ref. No.
Location
D101
D-5
D102
D-4
D201
D-3
D202
D-2
D301
D-8
D302
D-7
D401
D-9
D402
D-8
D501
D-13
D502
C-12
D801
G-8
D803
F-2
IC101
H-4
IC301
H-3
IC501
H-12
IC801
E-3
IC902
E-1
Q101
C-4
Q102
D-4
Q103
C-5
Q104
C-4
Q105
A-4
Q106
A-4
Q107
C-5
Q108
C-4
Q109
B-5
Q110
B-4
Q111
A-4
Q112
D-4
Q201
D-2
Q202
D-2
Q203
D-3
Q204
C-2
Q205
A-2
Q206
A-2
Q207
C-3
Q208
C-2
Q209
A-3
Q210
B-2
Q211
A-2
Q212
E-1
Q301
D-7
Q302
D-7
Q303
C-8
Q304
C-6
• Semiconductor Location
(AMP Board)
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS
AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
for schematic diagrams
• 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.
tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
%
: indicates tolerance.
•
2
: nonflammable resistor.
•
C
: panel designation.
•
U
: B+ Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from +12V and REMOTE terminals.
• Voltage is dc with respect to ground under no-signal
condition.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Signal path.
F
: AUDIO
for printed wiring boards
• X
: parts extracted from the component side.
•
r
: Through hole.
• b
: Pattern from the side which enables seeing.
(The other layer’s patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A)
(Side A)
parts face are indicated.
Ref. No.
Location
Q305
A-7
Q306
A-7
Q307
C-8
Q308
C-7
Q309
B-8
Q310
B-6
Q311
A-6
Q312
D-6
Q401
D-9
Q402
D-9
Q403
D-10
Q404
C-8
Q405
A-9
Q406
A-10
Q407
C-9
Q408
C-8
Q409
B-10
Q410
B-9
Q411
A-9
Q412
E-8
Q501
C-12
Q502
C-12
Q503
C-13
Q504
C-12
Q505
A-13
Q506
A-13
Q507
A-12
Q508
A-11
Q509
B-14
Q510
B-12
Q511
A-12
Q512
E-13
Q808
G-7
Q809
G-8
Q810
G-7
Q811
G-7
Q812
G-8
Q813
E-2
Q814
E-2
Q815
G-1
Q816
F-2
Q817
F-1
Q818
F-3
Q819
F-3
Q820
F-3
ZD801
F-2
3-2. BLOCK DIAGRAM — POWER SECTION —
XM-405EQX
VREF
TH801
TH802
LED
DRIVE
ON/OFF
CONT.
Q807
LD827
THERMAL
LED
DRIVE
Q806
LD826
OFFSET
LED
DRIVE
Q805
REG
Q902, 903
MUTE
CONTROL
Q813, 814
LD825
OVER
CURRENT
16
3
1
12
OSC
PWM
CONT
9
10
VCC
SWITCHING REGULATER
IC901
Q905, 906
ON/OFF
DRIVE
Q907, 909
ON/OFF
DRIVE
Q908, 910
OFFSET
OVER-C
MUTE
F/R+15V
AMP
SECTION
SECTION
IC902
Q901
B+
BATT
REM
CN801
F/R +B2
15V
REG
Q911
5V
REG
Q904
–15V
REG
Q912
+5V
F/R +15V
F/R +B2
F/R +B3
F/R –B3
F/R –B2
F/R –15V
SUB +B2
SUB +B3
SUB –B3
SUB –B2
T901
Q810
1
04
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