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

1.6.3 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.
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:

1.6.6 Printer Initialization

There are three initialization methods: hardware initialization, software initialization, and panel
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:
1-21