Sony XM-405EQX Service Manual ▷ View online
XM-405EQX
3-1. BLOCK DIAGRAM — AMP SECTION —
– 9 –
– 10 –
SECTION 3
DIAGRAMS
L
R
L
R
HIGH LEVEL
INPUT
R-CH
R-CH
R-CH
L+
L–
R+
R–
HIGH LEVEL
INPUT
SUB
WOOFER
LEVEL
CONTROL
R-CH
L+
L–
R+
R–
FRONT
L
R
REAR
3
2
3
2
IC101
IC301
5
6
IC501
3
2
IC501
R-CH
R-CH
INPUT
MODE
MODE
S501
FRONT
F+R
F+R
IC502
5
7
FRONT
REAR E Q
THE SAME AS ABOVE BLOCK DIAGRAM
IC103
7
5
3
2
IC102
1
IC103
2
1
VR101-1,2
FILTER
S101-1
FILTER
FILTER
VR102-1
50Hz
OFF
HFP
FRONT EQ
VR103-1
200Hz
50Hz
EQ
200Hz
EQ
IC104
IC105
VR104-1
800Hz
800Hz
EQ
IC106
VR105-1
3.2kHz
3.2kHz
EQ
IC107
VR106-1
12.8kHz
SW102
DIRECT
VR107
LEVEL
12.8kHz
EQ
IC108
IC109
5
6
7
IC110
2
1
OFF
ON
MUTE
Q112
MUTE
Q312
MUTE
Q512
POWER
AMP
Q301-310
POWER
AMP
Q101-110
BUF
Q809, 812
BUF
Q808, 811
MUTE
OVER-C
OFFSET
OVER
CURRENT
DETECT
Q311
OFFSET
DETECT
Q818-820
OFFSET
DETECT
SUB
WOOFER
POWER
AMP
LED
SCAN
Q815-817
OVER
CURRENT
DETECT
Q111
1
1
7
1
INPUT
INPUT
INPUT
2
1
IC502
VR501
LEVEL
VR502
FILTER
VR503
LOW BOOST
LOW
BOOST
5
7
IC503
3
1
IC503
Q513
Q501-510
OVER
CURRENT
DETECT
Q511
IC801
3
1
1
3
16
|
21
O1
|
6
12
|
15
D1
|
4
EQUALIZER
INDICATOR
INDICATOR
IC802
LD801-824
Q801-804
AC1
AC2
R-CH
6
4
(MATRIX)
CN804
L+
L–
L
R–
R+
R
R-CH
R-CH
MONO-L
FRONT
SPEAKER
OUT
CN805
L+
L–
CN806
SUB+
SUB–
L
R–
R+
R
MONO-L
REAR
SPEAKER
OUT
SPEAKER
POWER
SECTION
CNJ801-1
CNJ801-2
CN802
CNJ801-3
CNJ801-4
CN803
CNJ801
CNJ809-1
CNJ809-2
1
2
US, Canadian
1
04
· Signal path
: AUDIO
– 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
XM-405EQX
– 13 –
– 14 –
3-3. PRINTED WIRING BOARD — AMP SECTION — • Refer to page 12 for Semiconductor Location.
(Page 17)
(Page 17)
(Page 22)
(Page 23)
(Page 22)
(Page 27)
(Page 25)
(Page 17)
3-4. SCHEMATIC DIAGRAM — AMP SECTION —
– 15 –
– 16 –
XM-405EQX
(Page 21)
(Page 27)
(Page 23)
(Page 24)
(Page 22)
(Page 26)
(Page 20)
(Page 20)
(Page 21)
(Page 22)
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