Paper-Out Detection And Forms Override Function; Error Conditions; Buzzer Operation; Initialization - Epson LG1-1070 Service Manual

Paper-out Detection and Forms Override Function

When the paper-out detector, attached to the printer mechanism, detects a paper-end, the printer first
performs a forms override. If paper loading fails, the BUSY signal goes HIGH, the PAPER OUT indicator
is lit, the interface PE signal becomes HIGH, the ERROR signal becomes LOW, and the printer enters
the PAUSE condition automatically.
By ignoring the paper out, the printer can print additional lines after the paper out is detected. This
function is called the forms override function. After you load new paper and press the PAUSE button,
the printer recovers to the RUNNING condition, and printing restarts.
The printer enters the paper-out condition only when a paper-out is detected after the printer performs
paper loading.

1.6.4 Error Conditions

If any of the following error conditions are detected, the printer automatically enters PAUSE condition.
Home position is not detected at printer mechanism initialization.
Home position is detected during printing.
The PAUSE button is pressed, and the printer enters PAUSE condition.
A paper-out is detected after performing paper loading operation.
If parallel interface is selected, the following interface signals are output to indicate the error and to
stop data transmission:
The BUSY signal becomes HIGH.
The ERROR signal becomes LOW.
No ACKNLG pulse is sent.

1.6.5 Buzzer Operation

The buzzer sounds under the following conditions:
. A paper-out error is detected (beeps 3 times for 0.1 second, with 0.1 second intervals).
Abnormal carriage movement is detected (beeps 5 times for 0.5 second, with 0.5 second intervals).
A panel setting is accepted
Printer Initialization
There are three initialization

initialization.

(1) Hardware initialization
This type of initialization takes place when the printer power button is turned on (and the AC power
cord is plugged in) or when the INIT signal is received.
When the printer is initialized, it performs the following actions:
(O. 1 second beep).
methods: hardware initialization, software initialization, and panel
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