Epson Stylus Photo RX700 - Page 74

EPSON Stylus Photo RX700 Revision A
Troubleshooting Troubleshooting for Scanner 74
 Carriage unit does not operate
 Carriage operates but error indicated
 Fluorescent lamp does not turn on
 Picture can not be read clearly
Table 3-18. Carriage unit does not operate
Cause Check Point Yes/No Remedy
Connector CN20 and
CN23 on main board is
disconnected.
Connector CN20 and
CN23 on main board is
disconnected?
Yes
Connect the connector.
Faulty carriage moving
mechanism
Grease is applied properly?
No
Apply grease at designated
point
(Refer to “ Lubrication”
(p.151))
 Does CR motor operate
when power is turned
ON with upper case of
Scanner removed?
 Does CR unit move with
CR motor removed?
No
Check the carriage moving
mechanism, replace the
relevant parts or remove
and reinstall them.
Defective CR HP Board Replace the CR HP sensor
board
No
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.
No
Replace the CR motor.
Defective main board – – Replace the main board.
Table 3-19. Carriage operates but error indicated
Cause Check Point Yes/No Remedy
Upper case of scanner is
removed.
Upper case of scanner is
removed.?
Yes
Install the upper case.
Defective main board – – Replace the main board
Defective CR HP sensor
––
Replace the CR HP sensor
board.
Table 3-20. Fluorescent lamp does not turn on
Cause Check Point Yes/No Remedy
Connector CN20 on main
board is disconnected.
Connector CN20 on main
board is disconnected?
Yes
Connect the connector
CN20 on the main board.
Connector of CCD Unit is
disconnected.
Connector of CCD Unit is
disconnected?
Yes
Connect the connector on
the CCD Unit.
Fluorescent lamp is not set
correctly in connector on
inverter board.
Fluorescent lamp is not set
correctly in connector on
inverter board?
No
Set the lamp correctly on
the inverter board.
Defective lamp Lamp turns on after
replaced?
Yes
Replace the CCD Unit.
Defective inverter board Problem is solved after
inverter board is replaced?
Yes
Replace the CCD Unit.
Defective main board – – Replace the main board
Table 3-21. Picture can not be read clearly
Cause Check Point Yes/No Remedy
Dirt on mirror inside CR
unit
Picture can be read clearly
after mirror is cleaned?
No
Clean fluorescent lamp
surface.
Defective CCD Unit – – Replace the CCD Unit.
Defective main board – – Replace the main board