Printer Initialization - Epson LQ-870 Service Manual

REV.-A

1.6.6 Printer Initialization

There are three types of initialization: hardware, software, and control panel.
(1) Hardware initialization
This type of initialization takes place when you turn on the printer (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:
(a) Initializes the printer mechanism.
(b) Clears the input data buffer.
(c) Clears the downloaded character set.
(d) Clears the print buffer.
(e) Returns the printer settings to their default values.
(2) Software initialization
The ESC @ command initializes the printer but does not perform functions (a), (b), and (c) above. The
last SelecType settings still take effect.
(3) Control panel initialization
Pressing the PAUSE and ALT buttons at the same time initializes the printer but does not perform
functions (a) and (c) above. The last SelecType settings still take effect.
1.6.7 Default Values
When the printer is initialized, the following default values take effect:
Page position
Left and right margins
Line spacing
Vertical tabs
Horizontal tabs
Family number of typestyle
Download characters
Character spacing
Printing effects
Condensed printing
Printer condition
The current paper position becomes the top-of-form position.
Released
Cleared
Every eight characters (relative)
Last font selected from the control panel
Kept during software initialization Cleared during hardware
initialization
Last setting selected from the control panel
Cleared except condensed printing
Last setting selected from the control panel
RUNNING (not PAUSE)
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