Microplex PP 404 User Manual page 71

Display
I/O OK
If all tests have been passed successfully the following message will be displayed:
Display
READY 1 ELQ
or
BUSY 1 ELQ
That means ...
EEPROM located on
the Control Unit not
addressable
That means ...
The Printer is OK
Cause / Action
EEPROM

not installed

not correctly installed

defective
Cause / Action

Printer ready for operation
Troubleshooting and Diagnostics
4-11