Specifications

Check the voltage at CN101-4 on the optional dc power supply unit.
24V 0V
Replace the optional dc power supply unit.
Check the voltage at CN205-4 on the interface board.
6V 0V
Replace the duplex main board.
Check the voltage at CN205-3 on the interface board.
0V
Replace the interface board and/or copier main board.
Check whether the 2nd paper size switches have a short.
No Short
Replace the defective paper size switches.
Replace the main board.
1 December 1990
6-47