Epson GT-1200, Service Manual

Page: 110 / 157

ADF Troubleshooting
Rev. A 3-4
3.1.1.5 Motor Line Output Test Mode
With this test mode, you can detect the defective part by driving 3 motors
consecutively.
Step 1. Place the ADF on the scanner.
Step 2. Set the Dip-switch on the control as shown below.
1 2 3 4 5
O n
O f f
Step 3. Turn the scanner on, and open and then close the either feeding
cover or eject cover. (The test mode is set with this action.)
Step 4. Press the push switch on the control board. The motors are driven
one by one in the order listed below as the switch is pressed each
time.
1) Feeding motor: Forward rotation for 150 m Sec.
(Weight shutter solenoid: On)
2) Feeding motor: Backward rotation for 150 m sec.
3) Feeding motor: Backward rotation for 400 m sec.
4) Transportation motor: Forward rotation for 400 m sec.
5) Transportation motor: Backward rotation for 250 m sec.
6) Transportation motor: Backward rotation for 400 m sec.
7) Reverse Motor: Forward rotation for 250 m sec.
8) Reverse Motor: Forward rotation for 400 m sec.
9) Reverse Motor: Forward rotation for 400
®
250 m sec
3.1.1.6 Solenoid Line Output Test Mode
With this test mode, you can activate 2 solenoids to check for the correct
operation.
Step 1. Place the ADF on the scanner.
Step 2. Set the Dip-switch on the control board as shown below.
1
2 3
4 5
O n
O f f
Step 3. Turn the scanner on, and open and then close the either feeding
cover or eject cover. (The test mode is set with this action.)
Step 4. Press the push switch on the control board. The solenoids are
activated in the order listed below as the switch is pressed each
time.
1) Weight shutter solenoid
2) Flapper solenoid