Sony SDM-N50R (serv.man2) Service Manual ▷ View online
SDM-N50R(E)
3-6
3-2. CIRCUIT BOARDS LOCATION
B
H
U
DISPLAY
MEDIA ENGIN
G
A
SDM-N50R(E)
3-7
Note:
•
All capacitors are in
µ
F unless otherwise noted. (pF:
µµ
F)
Capacitors without voltage indication are all 50 V.
•
Indication of resistance, which does not have one for rating electrical power, is as follows.
Pitch: 5 mm
Rating electrical power 1/4 W (CHIP : 1/10 W)
• All resistors are in ohms.
•
: nonflammable resistor.
•
: fusible resistor.
•
T
:internal component.
•
: panel designation, and adjustment for repair.
• All variable and adjustable resistors have characteristic curve B, unless otherwise noted.
•
: earth-ground.
•
: earth-chassis.
• The components identified by
[
in this basic schematic diagram have been carefully factory-selected for each
set in order to satisfy regulations regarding X-ray radiation.
Should replacement be required, replace only with the value originally used.
• When replacing components identified by
]
, make the necessary adjustments indicated. (See page 2-1)
• When replacing the part in below table, be sure to perform the related adjustment.
• All voltages are in V.
• Readings are taken with a 10 M
Ω
digital multimeter.
• Readings are taken with a color-bar signal input.
• Voltage variations may be noted due to normal production tolerances.
•
*
: Can not be measured.
• Circled numbers are waveform references.
•
: B + bus.
•
: B – bus.
3-3. SCHEMATIC DIAGRAMS AND PRINTED WIRING BOARDS
Note: The components identified by shading and
mark
!
are critical for safety. Replace only
with part number specified.
Note: Les composants identifiés par un tramé et
une marque
!
sont critiques pour la
sécurité. Ne les remplacer que par une pièce
portant le numéro spécifié.
portant le numéro spécifié.
•
Divided circuit diagram
One sheet of A, U boards circuit diagrams are divided into two
sheets, each having the code A-P1-
a
to A-P1-
b
, A-P2-
a
to A-P2-
b
, A-P3-
a
to A-P3-
b
, U-
a
to U-
b
. For example, the destination
ab1 on the A-P1-
a
sheet is connected to ab1 on the A-P1-
b
sheet.
b
1
a
Ref. No.
Circuit diagram division code
SDM-N50R(E)
3-8
G
D
S
2
3
4
5
6
7
8
9
0
qa
qs
qf
qh
–
1
G
D
S
G
S
S
D
G
D
Ver.1.6
Transistor
(FET)
(FET)
Transistor
Transistor
Discrete semiconductot
(Chip semiconductors that are not actually used are included.)
Diode
Diode
Diode
Diode
Diode
Diode
Diode
Diode
Diode
Diode
Source
Source
Anode
Anode
(NC)
(NC)
Cathode
Anode
Cathode
Common
Cathode
Cathode
Common
Cathode
Cathode
Common
Common
Common
Common
Cathode
Anode
Base
Emitter
Collector
Base
Emitter
Collector
Drain
Gate
Gate
Drain
Device
Printed symbol
Terminal name
Circuit
Terminal name of semiconductors in silk screen
printed circuit ( )
Anode
Anode
Anode
Cathode
Anode
Anode
Cathode
qd
Transistor
(FET)
(FET)
Transistor
(FET)
(FET)
qg
Emitter
Collector
Base
Transistor
Source
Gate
Drain
Cathode
Anode
Anode
Cathode
Anode
Anode
*
SDM-N50R(E) 3-9
1
A
B
C
D
E
F
G
H
I
2
12
13
11
10
9
8
7
6
5
4
3
14
15
(1) Schematic Diagrams of A (P1-P3) Board
4.9
4.9
4.9
STBY5V
4.9
0
0
5V
3.3V
5V
0
4.6
4.6
*
4.4
4.0
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
9
C108
C109
C101
C112
C114
R126
R127
R121
R115
R116
D102
D105
D101
R150
R151
R152
IC103
IC106
IC107
R105
R106
R111
R112
R109
R110
R113
R114
FB102
FB103
FB101
FB104
R101
R102
R103
C113
FB106
FB105
FB107
CN107
R122
R123
R128
R129
R130
R131
R132
R135
R136
R137
R138
R139
FB108
Q102
Q103
C110
C133
C134
CN104
0.01 25V
B
0.01 25V
B
0.1 25V
F
0.1 25V
F
0.1 25V
F
0
0
10k
1/16W
680
1/16W
220
1/16W
MA151WK-TX
MA151WK-TX
BRPG1201W-TR
10k
1/16W
10k
1/16W
1k
1/16W
M24C16-MN6T
EEPROM
24LC21AT/SN
DDC1
24LC21AT/SN
DDC2
15k
1/16W
15k
1/16W
15k
1/16W
15k
1/16W
0
0
0
0
0UH
0UH
0UH
0UH
100
1/16W
100
1/16W
100
1/16W
150 10V
0UH
0UH
0UH
6P
10k
1/16W
10k
1/16W
100
1/16W
100
1/16W
100
1/16W
100
1/16W
100
1/16W
10k
1/16W
10k
1/16W
10k
1/16W
10k
1/16W
10k
1/16W
0UH
DTC114EKA-T146
SW
SI2301DS-T1
SW
150 10V
150 10V
0.01 25V
B
9P
DDC1_GND
DDC2_GND
SUB_SCL
SUB_SDA
DDC1_VCLK
DDC1_SCL
DDC1_SDA
DDC2_VCLK
DDC2_SCL
DDC2_SDA
3.3V
5V
GND
STBY5V
SER1(1..3)
DDC1_5V
DDC2_5V
SER11
SER12
SER13
NC
NC
NC
VSS
NC
NC
NC
VSS
VCC
VCLK
SCL
SDA
VCC
VCLK
SCL
SDA
E0
E1
E2
VSS
VCC
WC
SCL
SDA
3.3V
3.3V
GND
GND
1
2
3
4
5
6
TXD
RXD
GND
GND
5V
GND
GND
LED_GREEN
LED_UMBER
FB2
FB2
FB2
FB2
FB3
FB3
FB3
5V(STBY)
5V(STBY)
DDON
GND
FB3
TO G BOARD
CN702
(ECS)
TO P2-
a
TO P2- a
TO P2- a
TO P2- a
A
(SYSTEM CONTROL)
-P1-
a
TO P3-
b
TO P2-
b
ab24
ab23
ab22
ab21
ab20
ab19
ab18
ab16
ab17
ab2
ab3
ab4
ab7
ab8
ab9
ab10
ab11
ab12
ab13
ab14
ab15
ab6
ab5
ab1
B-SS3514<J..>-A-P1- a (24)
•
Divided circuit diagram
One sheet of A board are circuit diagram is divided into six sheets,
each having the code A-P1
a
to A-P1
c
. For example, the destination
ab1 on the code A-P1-
a
sheet is connected to ab1 on the A-P1
b
sheet.
a b 1
Ref. No.
Circuit diagram division code
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