2 - G - 5
DRUM UNIT
[4] PCL/TSL Control
The PCL (precharging exposure lamp) and TSL (transfer sync
exposure lamp) consist of LEDs which are controlled by the CB
(control board).
1. Operation
PCL goes ON and OFF in synchronism with M1 (main), and
TSL goes ON and OFF in synchronism with M4 (drum).
2. Signals
a. Output signals
(1) PCL CONT (CB → DB → PCL)
PCL ON/OFF control signal
[L]: PCL ON
[H]: PCL OFF
(2) TSL CONT (CB → TSL)
TSL ON/OFF control signal
[L]: TSL ON
[H]: TSL OFF
[5] Separation Claw Control
24VDC
SD4 DRIVE
5-B9
5-B10
CB
SD4
The separation claws are driven by SD4 (separation claws),
and are controlled by the CB (control board).
1. Operation
During the separation discharge, SD4 goes ON, causing
the separation claws to touch the drum in order to help
separate the paper from the drum.
2. Signals
a. Output signal
(1) SD4 DRIVE (CB → SD4)
SD4 drive control signal
[L]: SD4 ON
[H]: SD4 OFF
24VDC
PCL CONT
24VDC
TSL CONT
5-A3
5-A4
62-B1
62-B9
CB
PCL
24VDC
PCL CONT
20-1
20-2
DB
21-5
21-6
TSL