Error Conditions; Printer Initialization; Hardware Initialization; Software Initialization - Epson STYLUS PRO XL 4004677 Service Manual

Product Description

1.4.4 Error Conditions

The printer can detect various errors and indicate them with LEDs.
Error
Paper out
No ink cartridge
Paper jam
Maintenance request
Carriage error

1.4.5 Printer Initialization

There are three initialization methods: hardware initialization, software initialization, and panel
initialization.

1.4.5.1 Hardware Initialization

Hardware initialization is performed by:
- Turning on the printer.
- Sending the parallel interface INIT signal.
(If the INIT signal is active when the printer is turned on, hardware initialization is started when the INIT
signal becomes inactive.)
When the hardware initialization is performed:
- The printer mechanism is initialized.
- Input data buffer is cleared.
- Downloaded character definitions are cleared.
- Print buffer is cleared.
- Default values are set.

1.4.5.2 Software Initialization

Software initialization is performed upon receipt of the control code ESC @.
When the software initialization is performed:
- Print buffer is cleared.
- Default values are set.

1.4.5.3 Panel Initialization

This printer is initialized by pressing the Load/Eject button while pressing the Alt button.
When the panel initialization is performed:
- Input data buffer is cleared.
- Print buffer is cleared.
- Default values are set.
1-18

Table 1-19. Error Indications

Paper Out
Data LED
LED
Off On
Off Off
Off Blinks
Blinks Blinks
Blinks Off
No Ink
Economy
Cartridge
LED
LED
Off Off
On Off
Off Off
Blinks Blinks
Off Off
Stylus Pro XL
Condensed Pause
LED LED
Off Off
Off Off
Off Off
Blinks Blinks
Off Blinks
Rev.A