Panasonic Workio DP-3510, Service Manual

Page: 542 / 858

542
JAN 2006 Ver. 5.2
DP-3510/3520/3530/4510/4520/4530/6010/6020/6030
11.1.2.3. Power Supply System
11.1.2.3.1. Outline
The Finisher Controller PCB is supplied with 24 VDC power when the Copier is turned on. The 24 VDC
power line is used to drive the motor and solenoids. It also serves for sensors and ICs on PCBs after being
converted to 5 VDC by the Regulator IC(Q14) on the Finisher Controller PCB. The 24 VDC power is also
used to feed power from the Finisher Controller PCB to the Saddle Stitch Controller PCB. The power is also
supplied to the Punch Driver PCB when the optional Punch Unit is mounted.
Some of the 24 VDC power used to drive motors is cut off when the Door Switch (MS1) is open.
The power to the Saddle Stitch Controller PCB and the Punch Driver PCB, however, will not be cut off.
Fig. 2-074 is a block diagram showing the power supply system.
Fig. 2-074
11.1.2.3.2. Protection Functions
The 24 VDC power line used to drive motors and solenoids is equipped with a Circuit Breaker (CB1) for
protection against overcurrent. The 24V line used to drive the First Feed Motor (M1), Alignment Motor (M3),
and Stapler Shift Motor (M4) are equipped with a fuse, which is designed to blow when an overcurrent
occurs.
Copier
24V
Saddle Stitch
Controller PCB
Circuit Breaker
(CB1)
Finisher Controller PCB
(Q14)
Regular IC
Door Switch (MS1)
24V
24V
24V
5V
5V
Motor
Motor
Solenoid
Sensors
Logic
Punch Driver PCB
(Punch Unit (optional))