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Chapter 3 Removal and Replacement Procedures (RRPs)
Version 1 2006.11.28
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 key, key, and [MENU] key on the control panel.
3) Enter the password, press the key twice, and press the key once. The diagnostic screen
comes up.
4) Press the key several times until IOT Diag is displayed. Press the key once.
5) Press the key several until NVM Settings is displayed. Press the key once.
6) Press the key several times until NVM Save is displayed. Press the key once.
7) Press the key twice, and NVM Save is performed.
8) After NVM Save is complete, press the [CANCEL] key several times until IOT Diag is
displayed.
9) Press the key several times until Complete is displayed.
10) Press the key three times. Ready to Print is displayed.
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.
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