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Service Guide OL400
Chapter A Reference Charts
A.2.02 Engine Controller Board (LLAB)
Firmware
Q1 - EPROM (64Kbyte) - Engine Control
Beginning with LLAB Revision 11, Q1 is not needed. The Q1 ROM has been changed to
a
Masked ROM internal to MPU 83C154, which replaces MPU 80C51.
IC2 - EEPROM (1,024 bit)
Fuses
NONE
Jumpers
NONE
Sensors
Resist Sensor
Outlet Sensor
Toner End Sensor (not used at this time )
Switches
NONE