Sony XES-M50 (serv.man3) Service Manual ▷ View online
– 9 –
SECTION 2
DISASSEMBLY
7
two screws
(P2.6
(P2.6
×
6)
1
two hexagon
soket bolts
(4
soket bolts
(4
×
17)
6
chassis (upper)
1
two hexagon soket bolts
(4
(4
×
17)
FRONT, REAR PANEL
1
connector
(CNP102)
(CNP102)
2
two hexagon socket bolts
(4
(4
×
10)
3
cover (B)
4
cover (A)
2
two hexagon
soket bolts
(4
soket bolts
(4
×
10)
3
cover (B)
5
four screws
(P2.6
(P2.6
×
6)
!º
screw
(P2.6
(P2.6
×
6)
!¡
two screws
(P2.6
(P2.6
×
6)
3
two fuses
(blade type)
(blade type)
2
two cords
(with connector)
(with connector)
!º
screw
(P2.6
(P2.6
×
6)
!™
rear panel
6
foot (B)
8
two screws
(P2.6
(P2.6
×
6)
4
screw
(B3
(B3
×
10)
5
foot (A)
9
front panel
1
connector
(CNP202)
(CNP202)
4
screw
(B3
(B3
×
10)
5
foot (A)
4
screw
(B3
(B3
×
10)
4
screw
(B3
(B3
×
10)
6
foot (B)
4
cover (A)
5
four screws
(P2.6
(P2.6
×
6)
Note:
Follow the disassembly procedure in the numerical order given.
CHASSIS (UPPER)
– 10 –
1
three connectors
(CNP103, 105, 205)
(CNP103, 105, 205)
4
two screws
(B4
(B4
×
14)
5
bracket (TR)
6
four screws
(B3
(B3
×
10)
7
four screws
(B3
(B3
×
4)
2
two screws
(BV M3
(BV M3
×
12)
3
two spacers
7
four screws
(B3
(B3
×
4)
4
two screws
(B4
(B4
×
14)
5
bracket (TR)
1
connector
(CNP204)
(CNP204)
8
two screws
(B3
(B3
×
8)
9
AMP board
AMP BOARD
– 7 –
+
+
+
–
–
SECTION 3
ELECTRICAL ADJUSTMENT
digital
voltmeter
[L-CH AMP BOARD]
[R-CH AMP BOARD]
L-CH
R-CH
VR202
R215
R-CH
L-CH
VR102
R115
IDLING CURRENT ADJUSTMENT
Procedure:
1. Rotate Semi-fixed resistors VR102 and VR202 fully counter-
1. Rotate Semi-fixed resistors VR102 and VR202 fully counter-
clockwise as viewed from the solder side.
2. No signal is entered, as input signal.
3. Apply the source voltage 14.4 V between +12 V, REMOTE
3. Apply the source voltage 14.4 V between +12 V, REMOTE
and GND terminals.
4. Adjust the VR102 (L-CH) and VR202 (R-CH) so that the digital
voltmeter reading becomes the adjustment limits below.
Adjustment Limits: 5 ± 0.2 mV
Adjustment Location:
– 12 –
D101
G-5
D102
H-8
D103
I-5
D104
I-6
D105
F-10
D106
F-13
D107
H-15
D108
H-15
D109
G-13
D110
F-19
D111
H-13
D201
E-6
D202
E-8
D203
C-5
D204
C-6
D205
F-11
D206
F-13
D207
E-15
D208
D-15
D209
E-13
D210
G-19
D211
D-13
IC101
K-7
IC102
I-14
IC201
A-7
IC202
D-14
Q101
J-5
Q102
J-4
Q103
K-4
Q104
K-4
Q105
K-5
Q106
K-5
Q107
F-5
Q108
I-4
Q109
I-5
Q110
G-5
Q111
G-6
Q112
G-4
Q113
H-7
Q114
H-8
Q115
J-7
Q116
K-7
Q117
K-11
Q118
K-10
Q119
K-13
SECTION 4
DIAGRAMS
LED board
R-CH AMP board
JACK (L) board
JACK (R) board
•
Circuit Boards Location
L-CH AMP board
Q120
K-12
Q121
I-14
Q122
I-13
Q123
G-15
Q124
G-13
Q125
G-15
Q126
H-15
Q127
G-15
Q128
G-15
Q129
H-13
Q130
H-14
Q131
G-13
Q132
H-8
Q133
H-9
Q201
B-5
Q202
B-4
Q203
B-4
Q204
B-4
Q205
B-5
Q206
B-5
Q207
F-5
Q208
C-4
Q209
C-5
Q210
F-5
Q211
F-6
Q212
F-4
Q213
E-7
Q214
E-8
Q215
C-7
Q216
B-7
Q217
A-11
Q218
A-10
Q219
A-13
Q220
A-12
Q221
C-14
Q222
C-14
Q223
E-15
Q224
E-13
Q225
E-15
Q226
D-15
Q227
E-15
Q228
E-15
Q229
E-13
Q230
E-14
Q231
E-13
Q232
E-8
Q233
E-9
Ref. No.
Location
Ref. No.
Location
• Semiconductor Location
XES-M50
4-1.
PRINTED WIRING BOARDS
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