Konica Minolta 7155 User Manual

DRUM UNIT
2-E-2
2 UNIT EXPLANATION
[3] Separation Claw Control
Separation claws are driven by SD1 (separation
claw). Separation claws are swung by M2
(drum). SD1 is controlled by PRCB (printer con-
trol board).
1. Operation
a. Separation claw ON/OFF control
SD1 (separation claw) is a pull-type solenoid
powered by 24 VDC. It turns ON to press sepa-
ration claws against the drum to help image-cop-
ied paper separate.
(1) SD1 (separation claw) operation timing
SD1 turns ON after a lapse of specified time from
turning ON of PS43 (leading edge) of the second
paper feed section. It turns OFF after a lapse of
the time set by PRCB (printer control board).
b. Separation claw swing control
Separation claws are swung by M2 (drum) via the
cam mechanism.
2. Signals
a. Output signal
(1) SPSD_DRV (PRCB to DCDB)
SD1 (separation claw) drive control signal
[L]: SD1 ON
[H]:SD1 OFF
[4] Paper Guide Plate Control
To prevent toner from adhering to the paper
guide plate, a constant voltage is applied to the
paper guide plate. This voltage is supplied from
HV (high voltage unit) and is controlled by PRCB
(printer control board).
1. Operation
a. ON/OFF timing
Turning ON/OFF in sync with M2 (drum)
b. Applied voltage
-500 VDC
2. Signal
a. Output signal
(1) GP. CONT (PRCB to HV)
This signal controls turning ON/OFF the voltage
application to the paper guide plate.
[L]: Voltage applied
[H]:Voltage not applied
PRCB
DCPS
24V2
P.GND
MS1 MS2
M2
SD1
5V
P.GND
DRUM CONT
DRUM CLK
CW/CCW
DRUM EM
MC24V 2
SPSD DRV
PRCB
DCPS
24V2
P.GND
GP
MS1 MS2
HV
GP.CONT

Konica Minolta 7155 Specifications

General

Brand	Konica Minolta
Model	7155
Category	All in One Printer
Language	English