Epson Perfection 3200 Photo Service Manual page 35

EPSON Perfection 3200 Photo
Start
Does host support
USB or IEEE 1394?
* Srart Windows and check
"My Computer" — "Properties" — "Device Manager".
Is USB enabled?
Is accessory twain
driver for scanner
installed correctly?
Is the USB or IEEE
1394 cable normal?
Replace the main
circuit board.
Figure 3-5. Host does not recognize scanner even when
power is turned on.
Troubleshooting
Replace host.
Install (or re-install) the
GT-9700F twain driver.
Replace the cable
Troubleshooting
Start
Is the TPU cable
Connect the cable.
at the back of the
scanner connected
correctly?
Is connector CN9 on
the main circuit
board connected?
Replace the option
Is the option main
main circuit board.
circuit board
normal?
* +24 V system: lamp, monitor
+5 V system: sensor, logic circuit
Replace the scanner
main circuit board.
Figure 3-6. Option TPU does not operate.
Revision A
Connect the
connector
30