Ricoh FT5233 Service Manual page 22

ELECTRICAL COMPONENT DESCRIPTION
Symbol Name
Circuit Board
PCB1 dc power supply
PCB2 Main control
PCB3 Scanner motor
control
PCB4 Main motor
control
PCB5 Operation panel
PCB6 ADS sensor
PCB7 High voltage
supply - CTBG
PCB8 High voltage
supply - D
PCB9 PTL/QL stabilizer
PCB10 Duplex control
(duplex machine
only)
PCB11 LCT interface
(LCT machine
only)
PCB12 Guidance display
control (duplex
machine only)
PCB13 Guidance display
(duplex machine
only)
Function
Drives the exposure and fusing lamps and
rectifies 100 Vac or 220/230/240 Vac input
and outputs dc voltages.
Controls all copier functions both directly
and through the other control boards.
Controls the speed of the scanner drive
motor.
Controls the rotation of the main motor.
Controls the LED matrix, and monitors the
key matrix.
Senses the background density of the
original.
Supplies high voltage for the charge
corona, grid bias, transfer corona, and
development bias.
Supplies high voltage for the separation
corona.
Provides high voltage for the quenching
and pre-transfer lamps.
Controls the rotation of the duplex feed
motor.
Interfaces the LCT control signal between
the main control board and the LCT.
Controls the guidance display board.
Displays guidance for machine operation.
1-18
12 February 1992
Index No.
44
10
69
71
93
90
9
8
73
106
80
92
94