Xerox DocuPrint N2025 Service Manual page 278

GP 4.4 Test Print
IOT Grid pattern is stored in the Print Engine Controller PWB. The Grid pattern is used by ser-
vice personal to identify, repair, and validate the operability of printer xerographics and paper
handling from all paper sources and options.
• Grid Test Pattern
• Grid Pattern selectable from all IOT input sources and Output destinations (Tray 1, MBF,
OCT, etc.)
• All supported Paper sizes
The Test Print Key Table summarizes the operation of the Control Panel keys in TEST PRINT
mode of IOT diagnostics (ref. Test Print Key Table). Table 1
Table 1 Test Print Key Table
Key Numbers
Enter Diagnostics:
Item Up + Item Down 2 / 6
Menu Up / Menu Down 1 / 5
Item Up / Item Down 2 / 6
Item Up / Item Down 2 / 6
Value Up / Value Down 3 / 7
Enter 4
Online 0 (Press and hold for 1 second)
General Procedures / Information
GP 4.4, GP 4.5
Actions
While turning the power on, press and hold until
message "*IOT*" is displayed on the LCD; When
"IOT" is displayed, release keys 2/6 and press
ENTER. The system will enter the IOT diagnostic
mode.
Scrolls to select:
Component Test
NVM Config
Test Print
Scrolls to available selections in the selected
menu above.
With Test Print selected - scrolls between:
Input Tray
Output Tray
Duplex Tray
Print Pattern
Input Tray - scrolls through available Trays
Output Tray - scrolls to Standard or OCT
Duplex Tray - scrolls to On or Off
Print Pattern
Will execute the Test Print selections up to 999
Stop Printing
GP 4.5 NVM Config
The NVM values hold critical control parameters of the mechanical and electromagnetic com-
ponents of the printer. The following allows service personal to status or change NVM settings.
• Read and write to NVM locations (refer. To NVM Table).
The following table summarizes the operation of the Control Panel keys in the NVM mode of
IOT diagnostics Table 1, Table 2
Table 1 IOT NVM Key Table
Key Numbers
Enter Diagnostics:
Item Up + Item Down 2 / 6
Item Up / Item Down 1 / 5
Enter 2 / 6
Enter 0-7-3-4
Enter 2 / 6
Value Up & Value Down 3 & 7
Enter 4
Menu Up 1
Menu Seq. Menu Selection
1 Config Bit 0
2 Config Bit 1
3 Config Bit 2
4 Config Bit 3
5 Resolution
6 Laser Density
7 Fuser Standby Temp
8 Fuser Run Temp
9 Front Tray Size
10 Front Tray Opt
11 Cassette Sw BT 0
12 Cassette Sw BT 1
13 Cassette Sw BT 2
14 Cassette Sw BT 3
15 Process Tray 1
02/2000
6-46
Actions
While turning the power on, press and hold until
message "*IOT*" is displayed on the LCD; When
"IOT" is displayed, release keys 2/6 and press
ENTER. The system will enter the IOT diagnostic
mode.
Scroll to NVM Menu.
Display NVM password.
Display NVM password. Password to enter NVM
(20 sec. timeout for wrong password)
Display NVM Menu Items
Change NVM value up or down. Display current
value of selected item. Pressing 3/7 again will
increment the value of any adjustable NVM.
Enter new NVM value. Display will flash when new
value is entered.
Escape
Table 2 NVM Table
Default Read/Write
1 Read
1 Read
1 Read
1 Read
D Read
4 Read
8 Read
8 Read/Write
A Read/Write
4 Read
1 Read/Write
0 Read/Write
1 Read/Write
1 Read/Write
8 Read/Write
DocuPrint N2025/N2825
Initial Issue