AR-C270 (serv.man15). (Section 11) Maintenance Disassembly Assembly - Sharp Copying Equipment Service Manual (repair manual). Page 36

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(AR-C160/C270)
 S10/P11 
OPC drum drive PWB
(AR-C100/C150/C250)
 S10/P11 
OPC drum drive/Signal interface PWB
(AR-C160/C270)
1) Remove the rear cabinet upper. (S01/P02)
2) Remove the rear cabinet lower. (S01/P03)
3) Remove the connector, and remove the OPC drum drive PWB.
(AR-C100/C150/C250)
Remove the connector, and remove the OPC drum drive/Signal
interface PWB. (AR-C160/C270)
Remove if from the notch section of the frame (#1). When assem-
bling, engage it with the notch section.
(AR-C100/C150/C250)
 (AR-C160/C270)
 S10/P12 
High voltage power interface PWB
1) Remove the rear cabinet upper.  S01/P02 
2) Remove the rear cabinet lower.  S01/P03 
3) Remove the screw and the connector, and remove the high volt-
age power interface PWB.
Slide the MC brunch PWB (#1) to the left to remove it from the high
voltage PWB mounting plate.
 S10/P13 
High voltage power PWB (Main charger/
Developing bias)
1) Remove the rear cabinet upper.  S01/P02 
2) Remove the rear cabinet lower.  S01/P03 
3) Remove the screw and the connector, and remove the high volt-
age power PWB (main charger. Developing bias).
 S10/P14 
High voltage power PWB (Transfer
charger)
1) Remove the transfer inner unit.  S06/Ua06 
2) Remove the high voltage power PWB (transfer charger).
S10/P10
S10/P11
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