O. DC Controller PCB1. Removing the DC Controller PCB1) Removing the rear cover.2) Disconnect the connector of the DC controller PCB.3) Remove the five mounting screws q used to fix the mounting plate in place, andremove the DC controller PCB together with the mounting plate w.Figure 7-465The DC controller PCB is equipped with a built-in battery (BAT101). Keep thefollowing in mind, as shorting across its terminals will lead to overheating:2. Points to Note When Replacing the DC Controller PCB• When sending the DC controller PCB to the workshop or the factory, put it in aconducting bag intact with its mount. Use a conducting bag whose one side istransparent, and make sure that the face of the PCB shows through.• After replacement, make necessary settings in service mode and user mode.• Record new service mode settings on the service label attached to the front door.qqwCOPYRIGHT © 1997 CANON INC. CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS7-51Caution: