Ricoh Neptune-P1 Service Manual page 441

6. Details
NUMBER
PCB7 Mother Board
PCB8 VDB (Video Drive Board)
PCB9 Controller Board
Power Packs
PP1 CGB Power Pack
6
PP2 T&S Power Pack
QL
Quenching Lamp 1 – 3
QL1 - 3
(1: Left, 2: Center, 3: Right)
Sensors
S1 Cassette End Sensor
S2 Cassette Set Sensor
S3 Exit Cover Sensor
S4 Fusing Exit Sensor
S5 ID Sensor
440
NAME
Interfaces with the controller, IPU, and optional
devices such as interface board for the printer
controller.
This controls the image signals that are sent to the LPH
(LED Print Head).
Controls the memory and all peripheral devices. The
GW architecture allows the board to control all
applications.
High voltage power supply for the charge corona wire
(C), development bias (B), and charge corona grid
(G).
High voltage power supply for the transfer corona
wire (T) and the separation corona wire (S) in the T&S
(Transfer and Separation) unit.
This removes remaining electrical charge on the left
part of the drum immediately after cleaning.
This sensor is above the paper cassette. It detects
paper end after the last sheet feeds.
This detects when the cassette is set and locked in its
place.
This detects if the exit cover on the rear of the machine
is open or closed.
This sensor is in front of the fusing exit rollers. It switches
on when the leading edge of the copy leaves the
fusing unit.
The machine uses this sensor to control toner supply,
toner near-end, and toner end. There is no toner
density sensor in this machine.
DESCRIPTION