Epson Perfection4180 Photo

EPSON Perfection4180 Photo Revision A
TROUBLESHOOTING Overview 24
3.1 Overview
This chapter explains the remedies for errors detected by the self-diagnostic function as
well as the check points on a fault phenomenon basis, which are required for efficient
troubleshooting at occurrence of any error.
3.1.1 Self-diagnostic Function
This scanner has a self-diagnostic function that automatically diagnoses the operating
status of each section, and uses an LED indication to show the error status. This
function detects the following error statuses, and their remedies are as described below.
COMMAND ERROR
FATAL ERROR
OPTION ERROR
(Only when the Option Unit is fitted and the scanner is ready to operate under the
control command (ESC e))
Table 3-1. Command Error
LED Indication Cause Disposition
Unidentifed command is detected. • The scanner (interpreter)
ignores the wrong command or
parameter. (Therefore, the
current settings or the default
value remain effective.)
• Scanner (interpreter) sends
NACK, and waits next
command or parameter.
Remedy The error condition is cleared when the scanner (interpreter) received a
correct command.
Table 3-2. Fatal error
LED Indication Cause Disposition
(1) The scanner is malfunction due
to for example lamp is or
Carridge cannot return home
(2) Fail to download Firmware
• The lamp goes off and the
scanner stops operation.
• The bit 7 of the status byte is set.
Remedy (1)(2)Turn the scanner off and then back on.
(No indication)
(Fast flickering)
Table 3-3. Option Error
LED Indication Cause Disposition
Open cover, paper absence (paper
empty), etc.
The bit 7 of the status byte is set.
Remedy Remove the error cause to recover.
Receivable command [[ESC F, ESC f, ESC @]
(No indication)