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Chapter 4: 7401-4xxx Hardware Installation 4-15
Using the Printer Test and Display Panel
19961
READY
POWER
PAPER
ATTN
ERR
F3 F2 F1 F0
FORM
FEED
LINE
FEED TEST SELECT
Display LED Indicators
The LEDs provide the following status information:
PAPER/POWER (green)
Status Indication
Printer OK Very short Off blink every 14 seconds
DC power On or Flashing when power is on
Paper supply Rapid On-Off 50% cycle flashing when out of
paper
Paper low Rapid On-Off 50% cycle flashing when paper low
Diagnostic mode 10 % On and 90% Off when in diagnostic mode
READY (green)
Status Indication
System ready On = System ready to accept data Off = Not ready
Data flow During receipt of data, LED blinks following state
of the Busy signal
Reverse channel When not printing during IEEE-1284 reverse
channel status, LED blinks after PtrBus signal flow