1) To remove the power supply PCB, open the top cover and remove the roll feed unit, left circle cover, tank cover, left cover, lower rear cover, lower rear left cover

and left rear cover.

See DISASSEMBLY/REASSEMBLY > Points to note on Disassembly and Reassembly > External Covers.

2) Disconnect the two connectors[2] from power supply PCB[1].

3) Remove the five screws[3] and remove the power supply PCB[1] together with the mounting plate.

e) Procedure for replacing the maintenance cartridge relay PCB(ROM board)

1) Turn off the printer and unplug the power cord.

2) Replace the maintenance cartridge relay PCB.

3) Plug the power cord to the outlet, and then turn on the printer whth the PAPER SOURCE button and INFORMATION button pressed down. (The printer will

start up in the PCB Replacement mode.)

4) Check that "Initializing" appears on the display, and then release the buttons. (When the printer enters the PCB Replacement mode, the message lamp goes on.)

5) What until "REPLACE MODE" appears on the display.

6) Select "MC BOARD", and then press the ok button

7) Check that "TURN POWER OFF" appears on the display, and then turn off the printer.

8) Turn on the printer.

9) Check the firmware version. If the firmware is not the latest version, update.

f) Procedure for replacing the main controller PCB