6-2-7. Replacing Control Box
When the PCBs inside are replaced, use GTService Tool to readjust firmware controls. Prepare a voltmeter (tester) and a thermometer and refer to the pages concerned.
(1) Remove Power code.
(2) Remove Operation Panel.
Remove 4 screws at both sides.
Unscrew the Print SW counterclockwise. Do not miss the black rubber ring inside.
Disconnect FFC Harness of CN4:PANEL and CN2:PRT SW and remove Operation Panel.
Confirm the direction of insertion and the lock/unlock mechanism.
(3) Remove covers.
Unscrew 2 screw of CF cover.
Remove Frame Front Cover. (Remove 3 rubber caps and unscrew 7 screws.)
Unscrew 6 screws and remove Frame Cover (Right).
(4) Remove Box cover.
Unscrew 4 screws.
Remove the clamp and pull out the cover.
Do not soil FFC connectors with grease nor damage. Do not touch connectors with bare hands.
(5) Disconnect Harnesses on Main PCB.
Disconnect Harness CN4: CR MOT&JAM