Devices - Ricoh G031 Service Manual

ENGINE CONTROL BOARD

2.8.2 DEVICES

The engine control board controls the printer engine system.
Devices
CPU
Gate Array (GAZELLE)
EPROM
EEPROM
SRAM
TB1
G031/G032
16-bit microprocessor
Internal RAM: 512 bits
Serial communication control for I/F controller
Laser printing control
Power width modulation (PWM) timer.
LD driver sample hold function
Pattern generation
Fusing unit control timer
I/O port
128 K engine firmware ROM
Service maintenance information (counters, registration,
etc.) 1 kbit
32 KB
The test pattern will be printed when TB1 is shorted.
2-40
Functions
SM