Circuit Boards Location; Schematic Diagrams And Printed Wiring Boards - Sony SDM-M51 Service Manual

4-2. CIRCUIT BOARDS LOCATION

J1
H
DC-AC INVERTER
4-3. SCHEMATIC DIAGRAMS AND PRINTED
WIRING BOARDS
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.
All manuals and user guides at all-guides.com
A
J2
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.
4-3
(1) Schematic Diagram of H Board
3
1 2
A
1 3 KEY PWR
SW801
SW-DPST 2 4
1 3 KEY MENU
SW802
SW-DPST 2 4
B
KEY UP
1 3
SW803
SW-DPST
2 4
1 3 KEY DOWN
SW804
SW-DPST
2 4
C
1 3 KEY PLUS
SW805
SW-DPST 2 4
1 3 KEY MINUS
SW806
SW-DPST 2 4
D
KEY AUTO
1 3
SW807
SW-DPST
2 4
CN801
B11B-PH-K
GND 1
2
E
3
4
TO A BOARD 5
6
CN5
7
8
1-12pin
9
10
11
F
H
G
— H BOARD (Conductor Side) —
4
5 6
LED801
3
2
LED AMB
LED GRN
LED 5V 1
DUAL_LED_CA
GND
4-4