EPSON Stylus Scan 2500 Revision A

Troubleshooting Scanner Troubleshooting 70

3.3 Scanner Troubleshooting

This section describes troubleshooting from the abnormal phenomenon. You

can isolate the faulty unit based on the abnormal phe nomenon. See

Table 3-6, “Service Level Troubleshooting Starts Here,” on page 69 to find the

closest phenomenon and the corresponding table to refer to.

Table 3-5. User-level Scanner-Specifi c errors

Error Cause Solution

Fatal error
• The lamp is broken.
• Stylus Scan turned on before
the transportation scr ew was
removed.
• System breakdown.
Turn off the Stylus Scan and
turn it back on. If the error does
not clear, service.
(Disposition)
Turn off the lamp and stop
operation. Set bit 7 of the
status byte.
ADF paper
jam ADF fails to eject the document.
After removing the document,
turn the Stylus Scan off and
back on, or send the ESC @
command.
Parallel I/F init: active pulse
(Disposition)
Turn off the lamp and stop
operation. Set bit 7 of the
status byte.
Command
error
Unidentified command detected.
(Disposition)
The scanner sent a NACK signal
and is waiting for the next
command. If an incorrect
command or parameter is
received, it is disregarded and the
previous value is maintained.
Send a correct command to
clear the error.
ADF cover
open ADF cover open Close the cover.
Maintenance
cover open Maintenance cover open Close the cover.

Table 3-6. Service Level Troubleshooting Starts Here

Phenomenon Description Ref, Table
Scanner does not
operate with power on.
• The Operate light on the control
panel does not come on.
• Scanner does not operate the
initialization.
Table 3-7
Table 3-8
Fatal Error occurs and
is not cleared afte r
turning off and back on
the scanner.
• Carriage unit does not operate.
• Carriage unit crashes into the
frame, and an error is indicated.
• The lamp does not light up.
Table 3-9
Table 3-10
Table 3-11
Scanned image is
unclear. --- Table 3-12
“Interface Error” is
indicated.
• SCSI Interface Error
• USB Interface Error Table 3-13
Table 3-14
“Option Error” occurs.
Optional unit(ADF/TPU)
do not operate.
• Optional unit does not operate
correctly. Table 3-15

Table 3-7. Power problems

Cause Step Checkpoint Finding Solution
Connector CN1 on
the power board is
disconnected. 1
Is the connector
CN1 on the power
board
disconnected?
Yes Connect CN1
properly.
Connector CN1 or
CN2 on the power
board
disconnected.
2
Is the connector
CN1 or CN2 on
the power board
disconnected?
Yes Connect CN1 or 2
properly.
Fuse on the power
board has blown
out. 3Has the fuse on
the power board
blown out? Yes Replace the fuse.