Canon Perfect Binder A1 Troubleshooting Manual page 162

[ Caution]
Make sure the trimming assembly is stowed inside of main body when operating the machine in service mode.
11) Turn on the power supply switch.
12) Turn on SW2-2, SW2-3 and SW2-7 on the service mode PCB and press the push switch PSW1.
[ Caution]
Pressing the push switch PSW1 activates the trimming blade, the pressing plate and the stack rotation assembly. Be careful not
to have your hand or clothes caught by them.
13) Check the operations of trimming blade, pressing plate and stack rotation assembly. Also check if the trimming blade moves
to the safe position.
14) Turn OFF the power supply switch and unplug the power supply plug from an outlet.
15) Remove the fixing plate.
160