Service Parts Disassembly
Phaser 3610, WorkCentre 3615 Service Manual 4-107
REP 5.6 MCU PWB
PL 5.3 Electrical (MCU PWB / HVPS)
Removal
CAUTION: Do not replace the MCU and ESS PWBs at the same time. Replace or check the ESS
PWB first, then cycle system power before replacing the MCU PWB.
CAUTION: Do not remove the MCU PWB from the protective bag until ready for installation.
Always wear a grounded wrist band while handling circuit PWBs.
Note: If possible, before replacing the MCU PWB, save NVM to the ESS PWB (Save NVM to ESS)
before removal to save configuration data.
1. Open the Front Cover.
2. Remove the Drum Cartridge.
3. Remove the MCU PWB. (Figure 1)
a. Release 3 clips that secure the MCU PWB cover and remove.
b. Disconnect all the connections to the MCU PWB.
c. Remove 4 screws (silver, M3, 6mm) to remove the MCU PWB from the chassis.
Figure 1
Replacement
1. P15 is Black. P12 is White. Install a new MCU PWB and use Load NVM from ESS to restore
configuration data from the ESS PWB.
2. Replace in reverse order.