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Service Guide ML520/521
Chapter A Reference Charts
A.2.02 Operator Panel Board (LEOP)
Function
The operator panel control LSI send commands to the microprocessors serial I/O port whenever the operator panels switches are pressed. The operator panel LED display provides information on fault alarms and printer status.
Firmware
NONE
Fuses
NONE
Jumpers
NONE
Sensors
NONE
Switches
SEL (Select)
SHIFT
LF (Line Feed)
FF(Form Feed)
TEAR PARK QUIET
PQ (Print Quality) CP (Character Pitch)
Test Points
NONE
