Removing The Hvt Pcb; Removing The Option Power Supply Pcb - Canon imageRUNNER 2525 Series Service Manual

■ Procedure
1. Disconnect all connectors on the DC controller PCB.
2. Remove the DC controller PCB.
• 6 screws (Screw A is tightened together with the
earth cable.)
6x
■ Action to Take after
Replacement/RAM Clearing
1. Clear the DC controller settings and counters.
Enter the service mode, and Then select the following:
• CLEAR > ENGINE > ENGINE BKRAMCLK
(Clearing of the RAM on the DC controller PCB)
2. Turn OFF and then ON the main power switch.
(Turning OFF/ON the main power switch clears the
RAM.)
3. If uploading of backup data fails before replacement
due to the damage to the DC controller PCB, enter
the values of service mode items recorded on the
service label. Since the values recorded on the
service label may be outdated, check the service
mode item list (#SERVICE DATA LIST) printed out in
advance, and then enter the latest values.
4. Turn OFF and then ON the main power switch.
(Turning OFF/ON the main power switch allows the
values entered for the service mode items to take
effect.)

Removing the HVT PCB

■ Preparation
1. Remove the rear cover
Cover (Right)" on page 136
2. Remove the rear cover
Cover (Left)" on page 137
■ Procedure
1. Remove the HVT PCB.
• 1 connector
• 2 screws
• 1 claw
1x
Removing the Option Power
Supply PCB
■ Preparation
1. Remove the rear cover
Cover (Right)" on page 136
2. Remove the rear cover
Cover (Left)" on page 137
3. Remove the lower rear
Rear Cover" on page 138
173
4. Disassembly/Assembly
(right)."Removing the Rear
(left)."Removing the Rear
2x 1x
(right)."Removing the Rear
(left)."Removing the Rear
cover."Removing the Lower