Read Sony SDM-M51 (serv.man2) Service Manual online
4-3
4-4
4-3. SCHEMATIC DIAGRAMS AND PRINTED
WIRING BOARDS
4-2. CIRCUIT BOARDS LOCATION
Note:
•
All capacitors are in µF unless otherwise noted. (pF: µµF)
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.
•
f
: nonflammable resistor.
•
F
: fusible resistor.
•
¢
: internal component.
•
p
: panel designation, and adjustment for repair.
• All variable and adjustable resistors have characteristic curve B,
unless otherwise noted.
•
e
: earth-ground.
•
E
: earth-chassis.
• All voltages are in V.
• Readings are taken with a 10 M 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.
•
s
: B + bus.
•
S
: B – bus.
J2
DC-AC INVERTER
A
J1
H
(1) Schematic Diagram of H Board
— H BOARD (Conductor Side) —
1
A
B
C
D
E
F
G
2
6
5
4
3
GND
GND
SW801
SW-DPST
KEY PWR
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
SW802
SW-DPST
SW803
SW-DPST
SW804
SW-DPST
SW805
SW-DPST
SW806
SW-DPST
SW807
SW-DPST
KEY MENU
KEY UP
KEY DOWN
KEY PLUS
KEY MINUS
KEY AUTO
LED801
CN801
B11B-PH-K
2
1
3
5
LED GRN
LED AMB
2
3
1
4
6
7
8
9
10
LED 5V
DUAL_LED_CA
11
H
TO A BOARD
CN5
1-12pin
Note: The components identified by shading and mark
!
are critical for safety. Replace only with part
number specified.
Note: Les composants identifiés per un tramé et une
marque
!
sont critiques pour la sécurité. Ne les
remplacer que par une pièce portant le numéro
spécifié.
spécifié.
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