Pcb Connection Diagram - Pioneer PDR-L77 Service Manual

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4. PCB CONNECTION DIAGRAM

4.1 SERVO MECHANISM, LOADING A and LOADING B ASSYS
NOTE FOR PCB DIAGRAMS :
1. Part numbers in PCB diagrams match those in the schematic
diagrams.
2. A comparison between the main parts of PCB and schematic
diagrams is shown below.
Symbol In PCB Symbol In Schematic
Part Name
Diagrams Diagrams
B C E B C E
Transistor
B C E
B C E B C E
Transistor
with resistor
B C E
D G S D G S
Field effect
transistor
D G S
Resistor array
3-terminal
regulator
B
SERVO
CARRIAGE
MOTOR
MECHANISM
M
ASSY
SPINDLE
M
MOTOR
A
CN452
A
CN451
D
LOADING B
ASSY
SIDE A
1
2
3. The parts mounted on this PCB include all necessary parts for
several destinations.
For further information for respective destinations, be sure to
check with the schematic diagram.
4. View point of PCB diagrams.
Connector
P.C.Board
C
LOADING A
ASSY
LOADING
MOTOR
A
M
CN453
(PNP1471-B)
2
3
Capacitor
SIDE A
SIDE B
Chip Part
B
SERVO
MECHANISM
ASSY
C
LOADING A
ASSY
D
LOADING B
ASSY
SIDE B
3
4
PDR-L77
B C D
35
4
A
B
C
D