PCB
Removing the DC Controller PCB
Before Replacement/RAM Clearing
Print the service data list in the service mode.
REPORT > REPORT OUTPUT > SERVICE DATA LIST
Replacement Procedure
1) Remove the rear cover (right).(
"Removing the Rear Cover (Right).".)
2) Remove the rear cover (left).(
"Removing the Rear Cover (Left).".)
3) Disconnect all connectors on the DC controller PCB.
4) Remove the DC controller PCB.
- 6 screws (Screw A is tightened together with the earth cable.)
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Since the values recorded on the service label may be outdated, check the service mode item list (#SERVICE DATA LIST) printed out in advance, and then enter the latest values.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 Main Controller PCB
Replacement Procedure
1) Remove the left cover (right).(
"Removing the Rear Cover (Right).".)
3) Remove the modem PCB (for the model with a FAX function).
4) Disconnect all connectors and flexible cables on the main controller PCB.
5) Remove the main controller PCB.
- 9 screws
Action to Take after Replacement
After replacing the image processor PCB with a new one, take the following action:
- Download the latest firmware with the UST.
- Enter all values recorded on the service label affixed to the rear cover.
Replacement Procedure
1) Remove the rear cover (right).(
"Removing the Rear Cover (Right).".)
2) Remove the controller plate. (Remove 3 screws.)
3) For the model with a FAX and SEND function, press the SW3 on the main controller to check that LED10 goes out. (Secondary power cutoff)
CAUTION:
The ADRAM is powered from the secondary battery unit to back up the image memory even after the main power switch is turned OFF and the power plug is removed from the outlet.
If the SW3 on the main controller PCB is pressed with the image backed up, the entire data stored in the memory is cleared. Be sure to output the data stored in the memory before pressing the SW3.
4) Remove the RAM PCB. (Release the hook.)