SprintScan 35LE Service Manual
Troubleshooting
24
Checking for Short Circuit on Main PC Board
1. If applicable, reconnect power supply to main PC board, and then unplug connectors
J1, J2, J3, J5, and J7.
2. Power up the scanner and then measure all power supply output voltages.
Notes: • If any output voltage is incorrect, replace the main PC board.
• If the output voltages are correct, proceed to step 3.
3. Turn power off and then connect J7.
4. Turn power on and then check voltage from connector J6, Pin 3 (+12 VDC) to
Pin 2 (Power GND).
Note: If voltage is incorrect, replace the CCD module.