Xerox N2125N - DocuPrint B/W Laser Printer, Service Manual

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02/2000
6-18 DocuPrint N2125
GP 2.5 , GP 2.6
Initial Issue General Procedures / Information
GP 2.6 NVM Config
The IOT NVM values hold critical control parameters of the mechanical and electromagnetic
components of the printer. The following allows service personnel to status or change NVM
settings.
Table 1 summarizes the operation of the Control Panel keys in the NVM Config Menu.
Procedure
1. Power down printer.
2. Simultaneously hold keys 2 and 6 down.
3. Power up printer, wait for message "IOT?" to appear on the LCD.
4. Release both keys, then press key 4 to enter the IOT Diagnostics menu (message "Enter-
ing IOT Diagnostics Mode" appears. If key 4 is not pressed within 5 seconds of the "IOT?"
message, printer will go to the normal boot process.
5. Press key 1 or 5 to scroll through the Main Menu. "Component Test" and "NVM Config"
and "Test Print" are the choices available.
6. Press key 2 or 6.
7. The message "Enter Password" will appear on the LCD.
8. Press keys 0 7 3 4 in sequence.
9. Press key 2 or 6 to scroll through the items menu (Table 2).
The value in the configuration NVM can be viewed and changed.
10. Press key 3 or 7 to view the content of the selected item. Item with an (R) next to it is a
read only item.
11. Press key 3 or 7 to change the NVM value to a different value. Press key 4 to store the
new value. If key 4 is pressed, a message "Wrote value to NVM" will appear for about 1
second on the LCD.
Face up tray open E5 Close Face-up tray
Tray 1 out install tray C3 Main tray not installed prop-
erly, insert main tray
Tray 2 out install tray C3 Aux tray 1 not installed prop-
erly, insert Tray properly
Tray 3 out install tray C3 Aux tray 2 not installed prop-
erly, insert Tray properly
(Main Drive) Motor Fail U1 Power off & on if problem con-
tinues call for service
ROS Fail U2 Power off & on if problem con-
tinues call for service
Fuser Fail U4 Power off & on if problem con-
tinues call for service
Fan Fail U5 Power off & on if problem con-
tinues call for service
(IOT) NVM Fail U6 Power off & on problem con-
tinues call for service
Duplex Unit Fail E9 Power off & on if problem con-
tinues call for service
Envelope Feeder unit fail E9 Power off & on if problem con-
tinues call for service
OCT Unit fail E9 Power off & on if problem con-
tinues call for service
Optional Feeder Unit fail E11 Power off & on if problem con-
tinues call for service
Set pause command P1 Printer received set pause
command
Fuser Warning Fuser Unit Needs to be
replaced, Please Wait Replace fuser, clear fuser
warning
Table 2 IOT Fault Table
Condition / Message UI Error Code Action
Table 1 NVM Config Key Table
Key Numbers Actions
Item Up / Item Down 2 or 6 First key press will request password.
Scroll through NVM locations after password
has been entered.
If location is READ ONLY, a (R) will be dis-
played.
Value Up / Value Down 3 or 7 First key press will display current value.
Second key press changes NVM value up or
down.
Enter 4 Press Enter key to enter new value, message
"Wrote (value selected) to NVM" will be dis-
played. New value has been entered into
NVM.
0 -7 -3 -4 Password to enter NVM (Password only has to
be entered once after entering diagnostics.)