Troubleshooting For Scanner - Epson Stylus Photo RX 560 Service Manual

EPSON Stylus PHOTO RX560/580/590

3.3.5 Troubleshooting for Scanner

This section describes repair/service for the Scanner mechanism. In troubleshooting,
first identify the trouble at the Assy level based on the observation.
According to the observation as described in Table 3-16, perform the necessary
checking by referring to the appropriate table.
Scanner Errors at User Level
Table 3-15. Scanner Errors at User Level
Error Cause
• Defective CIS unit
• Defective scanner motor
Scanner error
• The scanner carriage is
interfering with any other
part.
Command error Undefined command is detected.
Scanner open Scanner cover is open.
Observation of Trouble and Reference for Remedy
Table 3-16. Observation of Trouble and Reference for Remedy
Observation
Even with power turned on, the The machine does not operate for
machine does not operate. initialization.
CR unit does not operate.
"Fatal error" occurred.
CR unit operates but error is
Indication error occurs and it is not
indicated.
cleared even after power is turned off
once and then turned on again.
The LED does not light up.
Picture is not read clearly. Picture is not read clearly.
"Communication error".
Indication error occurs and when
USB interface error
communication with the host is tried
again, "Communication error" recurs.
Troubleshooting
Remedy
• Replace the scanner carriage Assy.
• Remove the obstacle.
When correct command is received, error
status is cancelled.
Turn the power off once and then turn it
on again.
Close the cover.
Reference for
Description of Trouble
Remedy
Table 3-17
Table 3-18
Table 3-19
Table 3-20
Table 3-21
Table 3-13
Troubleshooting When There is No Error Display
Scanner does not operate for initialization
Table 3-17. Scanner does not operate for initialization
Cause Check Point
Check each connector for
Connector is
disconnection. Is there any
disconnected.
connector disconnected?
Carriage unit does not operate
Table 3-18. Carriage unit does not operate
Cause Check Point
Is any of the connectors
Connector on the Main
(CN17, 19 and 20) on the
Board is disconnected
Main Board disconnected?
Grease is applied
properly?
1. Does CR motor operate
Faulty carriage moving
when power is turned ON
mechanism
with upper case of Scanner
removed?
2. Does CR unit move with
CR motor removed?
Defective CR HP sensor
Replace the CR HP sensor
board.
board.
Disconnect the connector
(CN17) of the CR Motor
from the Main Board, and
Faulty CR motor
check continuity between
pin 1 and pin 2 on the
motor side, using a circuit
tester.
Defective main board ---
Revision A
Yes/No Remedy
Connect the disconnected
Yes
connector.
No Replace the main board.
Yes/No Remedy
Yes Connect the connector.
Apply grease at designated
No
point
Check the carriage moving
mechanism, replace the
No
relevant parts or remove
and reinstall them.
Replace the CR HP sensor
No
board.
No Replace the CR motor.
--- Replace the main board.
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