Service manual
D-6
NOTE
PWB-M and PWB-R: optional on both the 45-cpm copier and 55-cpm copier.
Symbol Part Name Removal Procedure
INV Inverter Board Remove the Scanner. → Unplug two connectors and
remove two screws and the Inverter Board Mounting
Bracket Assy. → INV
PWB-A Master Board Remove the Right Cover. → Remove the Rear Cover. →
Remove three screws and the Cover. → Remove four
screws and the Cover. → PWB-A
PWB-B Image Processing
Board
☞ D-7
PWB-C Power Supply
Board
Remove the Right Cover. → Remove the Rear Cover. →
Remove six screws and the Board Cover. → PWB-C
PWB-G AIDC Sensor
Board
☞ D-41
PWB-I1 Paper Size
Detecting Board 1
Remove four screws and the PC Drum Charge/Developing
Bias HV Mountaing Bracket Assy. → Remove two screws
and the Board Cover. → PWB-I
PWB-I2 Paper Size
Detecting Board 2
PWB-IC SCP Board Remove the Rear Upper Cover. → PWB-IC
PWB-M Memory Board Remove the Original Glass. → Remove four screws and the
IR Base Plate Left Cover. → PWB-M
PWB-R HDD Power Sup-
ply Board
Remove the Rear Cover. → Remove the Left Cover. →
Remove three screws and the HDD Mounting Bracket Assy.
→ PWB-R
PWB-S Tech. Rep. Setting
Switches Board
Swing down the Front Door. → Remove the Left Cover. →
Remove four screws and the Cover. → PWB-S
UN1 Control Panel Remove the Control Panel Unit. → UN1
UN2 ATDC Sensor ☞ D-41
PU1 DC Power Supply
Main
Remove the Rear Cover. → Remove six screws and the
Board Cover. → PU1
PU2 DC Power Supply
Sub
Remove the Rear Cover. → Remove the Left Cover. →
Remove three screws and the DC Power Supply Sub
Mounting Bracket Assy. → PU2
HV1 PC Drum Charge/
Developing Bias
HV
Remove the Rear Cover. → Remove six screws and the
Board Cover. → Remove ten screws and the DC Power
Supply Main Mounting Bracket Assy. → HV1