Epson GT-7000 Service Manual page 32

EPSON GT-7000
Table 3-7. Carriage moves but Error indication appears
Cause Step Checkpoint
CR home position 1 Check the signal
sensor is broken. level.
• Check the
signal/status
level between
C(+) and E(-) for
PC2.
H(about 4.5V)/
when PC1-PC2 is
closed.
L(0.3V)/when PC1
-PC2 is opened.
Table 3-8. Lamp does not light up.
Cause Step Checkpoint
Connector CN5 on 1 Is the connector CN5
the control board is on the control board
disconnected. disconnected?
Connector CN1 or 2 Is the connector CN1
CN2 on the CCD or CN2 on the CCD
board disconnected. board disconnected?
Lamp is not 3 Is the lamp connected
connected properly properly on the
on the inverter board. inverter board?
Lamp is broken. 4 Does the lamp light
after it is replaced?
Inverter board is 5 Does it operate
broken. properly after
replacing it?
Control board is 6
broken.
Rev. A
Finding Solution
-- Replace the CR
home position
sensor(PC1/PC2)
on the control
board.
Finding Solution
Yes Connect CN5
properly.
Yes Connect CN1 or 2
properly.
No Connect the lamp
properly.
Yes Replace the
lamp.
Yes Replace the
inverter board.
--- --- Replace the
control board.
Table 3-9. Scanned image is unclear.
Cause Step Checkpoint
Mirror in the carriage 1 Is the image
unit is dirty. scanned clearly
after cleaning the
mirror?
CCD sensor board is 2
broken.
Control board is 3
broken.
Table 3-10. SCSI Interface Error(SCSI Model Only)
Cause Step Checkpoint
Terminator switch is 1 Check the user's
set wrong. guide for the
correct setting. Is
the setting correct?
SCSI setting is 2 Check the user's
wrong. guide for the
correct setting. Is
the setting correct?
SCSI cable is 3 Replace the SCSI
defective. cable. Is the
operation normal?
Control board is 4
broken.
Chapter 3 Troubleshooting
Finding Solution
No Clean the lamp
surface.
--- -- Replace the CCD
board.
--- --- Replace the control
board.
Finding Solution
No Set the terminator
correctly.
No Set the SCSI
correctly.
Yes Replace the SCSI
cable.
--- --- Replace the control
board.
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