Epson AcuLaser C2900N Service Manual page 471

Chapter 3 Removal and Replacement Procedures Revision B
RRP8.9 PWBA MCU (PL8.2.13)
[Removal]
Note: Never fail to perform the diagnostic operation. Otherwise the data will be lost in the worst
case.
Note: Use the wrist strap to protect the PWB from the electrostatic.
1) Perform the NVM Save to evacuate the MCU data.
2) Turn on the power while pressing the "▲" key and "▼" key on the control panel.
3) Enter the password, press the "▼" key twice, and press the [OK] key once. The diagnostic screen
comes up.
4) Press the [OK] key once.
5) Press the "▼" key several times until "IOT Diag" is displayed. Press the [OK] key once.
6) Press the "▼" key several times until "NVM Settings" is displayed. Press the [OK] key once.
7) Press the "▼" key several times until "SaveNVM to ESS" is displayed. Press the [OK] key once.
8) Press the [OK] key once, and NVM Save is performed.
9) After NVM Save is complete, press the [STOP] key several times until "IOT Diag" is displayed.
10) Press the "▼" key several times until "Complete" is displayed.
11) Press the [OK] key two times. "Ready" are displayed.
12) Turn off the power to exit.
13) Remove the POWER CORD from outlet.
14) Remove the CASSETTE ASSY 250. (RRP2.1)
15) Open the COVER ASSY FRONT MG (PL1.2.1).
Note: Cover the drum of the DRUM CARTRIDGE to avoid exposure to light.
16) Remove the DRUM CARTRIDGE. (RRP4.6)
Note: The FUSING part is very hot. Take added care not to get burned when performing the
service operation.
17) Remove the FUSER UNIT. (RRP6.1)
18) Remove the COVER ASSY WINDOW TNR. (RRP1.6)
19) Remove the COVER ASSY TOP. (RRP1.1)
20) Remove the COVER SIDE R. (RRP1.5)
21) Remove the COVER SIDE L. (RRP1.7)
22) Remove the COVER REAR. (RRP1.3)
23) Remove the FAN. (RRP8.1)
24) Remove the PWBA ESS SFP. (RRP8.3)
3 - 217 Confidential
Epson AcuLaser C2900N