Oki OKIPAGE 10ex Maintenance Manual page 17

1MB Memory Board
Main Control Board
Program & Font ROM
6MB Mask ROM
EEPROM
Centronics
parallel I/F
74LS07
+8V -8V 0V +5V +38V
Reset
circuit
Power Supply
Board
Inlet sensor 1
Low voltage
Inlet sensor 2
generation circuit
Paper sensor
Outlet sensor
Paper out sensor
Toner low sensor
transformer
Figure 2-1 OKIPAGE 10ex Block Diagram
RS232C Interface Board
or
(Option)
For optional board
Resident RAM
512K x 8 DRAM
DATA
(2MB)
BUS
(32bit)
Drum motor &
Registration motor
1 Chip CPU
FAN Driver
HEAT ON
Cover
open
switch
LSI
Fusing temperature
Heater drive
circuit
AC
Filter circuit
2 - 2
(Option)
High Capacity
Second Paper
Feeder (Option)
drive circuit
FAN ALM
High voltage
generation
circuit
control circuit
Multi-Purpose
Feeder (Option)
Operation Panel
M Drum Motor
M Registration Motor
FAN
LED Head
Charge roller
Transfer roller
Developping
roller
Toner supply
roller
Cleaning
roller
Thermistor
Heater
AC IN