Dell 3115cn Service Manual page 506

Removal 67 MACHINE CONTROL UNIT (PL13.5.13)
Never fail to perform the diagnostic operation described below. Otherwise the data will be
lost in the worst case.
Use a wristband to protect the PWB from electrostatic damage.
1) Perform NVM Save to evacuate the MCU data.
2) Turn on the power while pressing the
3) Enter the password, press the
comes up.
4) Press the
5) Press the
6) Press the
7) Press the
8) After NVM Save is complete, press the [CANCEL] key several times until
displayed.
9) Press the
10) Press the
11) Turn off the power.
12) Remove the POWER CORD from the AC outlet.
Steps 13 through 22 are for reference. Before removing this component, check that Steps 13 through
22 have been performed.
13) Open the FRONT COVER (PL13.2.1).
14) Remove the FUSER. (Removal 8)
15) Remove the REAR COVER. (Removal 49)
16) Remove the COVER BOTTOM. (Removal 50)
17) Remove the COVER POLE IN L. (Removal 57)
18) Remove the COVER POLE L. (Removal 58)
19) Remove the LEFT COVER. (Removal 59)
20) Remove the BOX ASSY PRT AIO. (Removal 60)
21) Remove the BOX ASSY FAX AIO. (Removal 62)
22) Remove the HUMIDITY SENSOR. (Removal 66)
Continues to the next page.
Version 1 2006.11.28
key twice, and press the
key several times until
key several until NVM Settings is displayed. Press the
key several times until
key twice, and NVM Save is performed.
key several times until
key three times. Ready to Print is displayed.
Chapter 3 Removal and Replacement Procedures (RRPs)
key, key, and [MENU] key on the control panel.
IOT Diag is displayed. Press the
NVM Save is displayed. Press the
Complete is displayed.
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key once. The diagnostic screen
key once.
key once.
key once.
IOT Diag is