Schematic Diagrams And Printed Wiring Boards - Sony SDM-P82 Service Manual

3-3. 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.
• : nonflammable resistor.
• : fusible resistor.
∆
• : internal component.
• : panel designation, and adjustment for repair.
• All variable and adjustable resistors have characteristic curve B, unless
otherwise noted.
• : earth-ground.
• : earth-chassis.
• 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 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.
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.
• Divided circuit diagram
One sheet of A board are circuit diagram is divided into eight sheets,
each having the code A-a to A-h. For example, the destination
ab1 on the code A-a sheet is connected to ab1 on the A-b sheet.
a b 1
Ref. No.
Circuit diagram division code
Terminal name of semiconductors in silk screen
printed circuit ( )
*
Device Printed symbol Terminal name
Collector
1 Transistor
Emitter
Base
Collector
Transistor
2
Base Emitter
Cathode
3 Diode
Anode
Cathode
4
Diode
Anode (NC)
Cathode
5 Diode
Anode (NC)
Common
Diode
6
Anode Cathode
Common
7 Diode
Anode Cathode
Common
8
Diode
Anode
Anode
Common
9 Diode
Anode Anode
Common
Diode
0
Cathode Cathode
Common
qa Diode
Cathode Cathode
Anode
Cathode
qs Diode Anode
Anode
Cathode Anode
Source
Transistor
Drain
qd
(FET)
Gate
Source
Transistor
Drain
qf
(FET) Gate
Source
Transistor
qg Drain
(FET)
Gate
Emitter
qh Transistor Collector
Base
–
Discrete semiconductot
(Chip semiconductors that are not actually used are included.)
Circuit
D D
G G
S S
D D
G G
S S
Ver.1.6
SDM-P82 (UC) 3-3