Panel Leds; Self-Test; Performing The Self Test - Epson TM U200D - B/W Dot-matrix Printer Technical Manual

Panel LEDs

Power (POWER) LED:
Paper roll near-end
(PAPER OUT) LED:
(*1) Near-end detector is an option.
Error (ERROR) LED:

Self-test

Performing the Self Test

The printer has a self-test function that checks the following:
Control circuit functions
Printer mechanisms
Print quality
Control ROM version
DIP switch settings.
See Chapter 4 for instructions on running a self-test.
1-26 Features and General Specifications
Green
On: Power supply of +24V is stable.
Off: Power supply of +24V is not stable.
Red
On: Paper roll near-end is detected. (*1)
Off: Adequate paper remains on the paper roll (normal
condition).
Blinking: Waiting for restarting test printing on paper roll or
for return to on-line status after automatic paper
feeding.
Red
On: Off-line (except during paper feeding using the
FEED button and during the self-test).
Off: Normal operation.
Blinking Error state. (Refer to the Error types and
countermeasures in Chapter 4.)
Rev.B