Main Control Board; High Voltage Unit - Oki OKIPAGE 14i Maintenance Manual

Main Control Board

Program & Font ROM
16MB Mask ROM
(8MB × 2)
EEPROM
Centronics
parallel I/F
74LS07
USB I/F
ML60851
5V
Reset
circuit
High Voltage
Unit
Inlet sensor 1
Inlet sensor 2
Paper sensor
Outlet sensor
Paper out sensor
Toner low sensor
3.3V
5V
12V
30V
41356801TH Rev.1
Expansion Board RS232C Interface Board
or
(Option) (Option)
For optional board
Resident RAM
2MB × 4 DRAM
DATA
(8MB)
BUS
(32bit)
Drum motor &
Registration motor
drive circuit
1 Chip CPU
FAN Driver
HEAT ON
Cover
open
switch
5V
LSI
Fusing temperature
5V 12V
control circuit
Heater drive
circuit
AC-DC
Convertor
Filter circuit
Figure 2-1 OKIPAGE 14i Block Diagram
Network Interface Board
or
(Option: ODA/INT)
Multi-Purpose
Feeder (Option)
High Capacity
Second Paper
Feeder (Option)
Operation Panel
FAN
FAN ALM
LED Head
Charge roller
Transfer roller
High voltage
Developping
generation
circuit
Toner supply
Thermistor
Power Supply Unit
M Drum Motor
M Registration Motor
roller
roller
Cleaning
roller
Heater
AC IN
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