Epson Stylus Photo RX700 Service Manual page 74

EPSON Stylus Photo RX700
Carriage unit does not operate
Table 3-18. Carriage unit does not operate
Cause Check Point
Connector CN20 and Connector CN20 and
CN23 on main board is CN23 on main board is
disconnected. disconnected?
Faulty carriage moving Grease is applied properly?
mechanism
Does CR motor operate
when power is turned
ON with upper case of
Scanner removed?
Does CR unit move with
CR motor removed?
Defective CR HP Board Replace the CR HP sensor
board
Faulty CR motor Disconnect connector CN2
on CR HP sensor board
and measure with a tester
the coil resistance between
pins 2 and 4 and between 1
and 3 on motor side.
Defective main board
Carriage operates but error indicated
Table 3-19. Carriage operates but error indicated
Cause Check Point
Upper case of scanner is Upper case of scanner is
removed. removed.?
Defective main board
Defective CR HP sensor
Troubleshooting
Yes/No Remedy
Connect the connector.
Yes
Apply grease at designated
point
No
(Refer to " Lubrication"
(p.151))
Check the carriage moving
mechanism, replace the
relevant parts or remove
No
and reinstall them.
Replace the CR HP sensor
No
board.
Replace the CR motor.
No
– – Replace the main board.
Yes/No Remedy
Install the upper case.
Yes
– – Replace the main board
Replace the CR HP sensor
– –
board.
Troubleshooting for Scanner
Fluorescent lamp does not turn on
Table 3-20. Fluorescent lamp does not turn on
Cause Check Point
Connector CN20 on main Connector CN20 on main
board is disconnected. board is disconnected?
Connector of CCD Unit is Connector of CCD Unit is
disconnected. disconnected?
Fluorescent lamp is not set Fluorescent lamp is not set
correctly in connector on correctly in connector on
inverter board. inverter board?
Defective lamp Lamp turns on after
replaced?
Defective inverter board Problem is solved after
inverter board is replaced?
Defective main board
Picture can not be read clearly
Table 3-21. Picture can not be read clearly
Cause Check Point
Dirt on mirror inside CR Picture can be read clearly
unit after mirror is cleaned?
Defective CCD Unit
Defective main board
Revision A
Yes/No Remedy
Connect the connector
Yes
CN20 on the main board.
Connect the connector on
Yes
the CCD Unit.
Set the lamp correctly on
No the inverter board.
Replace the CCD Unit.
Yes
Replace the CCD Unit.
Yes
– – Replace the main board
Yes/No Remedy
Clean fluorescent lamp
No
surface.
– – Replace the CCD Unit.
– – Replace the main board
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