Canon W8400 Series, Service Manual, Page: 204 / 224

Chapter 7
7-6
Displays the following EEPROM information in the ink tank.
T-7-3
5) WARNING
Displays the warning history (up to 20 events). The newest event has the smallest history number.
6) ERROR
Displays the error history (up to 20 events). The newest event has the smallest history number.
7) INK CHECK
Display the execution history of "Ink Check Off" in the Main Menu. (Bk, MBk, C, M, Y, PC, PM)
0= No execution history
1= One or more execution histories exist
b) I/O DISPLAY * To be supported by next version
Displays the status of the port I/O signal of the sensors and other devices connected to the engine controller.
c) ADJUST
Performs adjustment and prints the adjustment and check patterns needed for adjusting the printer parts.
- PRINT PATTERN > NOZZLE
This is used for a nozzle check pattern during servicing that prints in 1-pass and single direction. This is used to check for nozzles that are not discharging
properly. It takes about 2 minutes to print this pattern.
F-7-7
- PRINT PATTERN > OPTICAL AXIS
This pattern is used to adjust registration sensor optical axis. It takes about 2 minutes to print this pattern. For details, refer to Disassembly/Reassembly
> Adjustment and Setup Items > Action to take after replacing the carriage unit or registration sensor .
- PRINT PATTERN > LF
This pattern is used to adjust feed roller eccentricity. It takes about 10 minutes to print this pattern. For details, refer to Disassembly/Reassembly >
Adjustment and Setup Items > Action to take after replacing the feed roller home position sensor, feed roller encoder, and feed roller .
- HEAD
In "ADJ. SETTING", any registration value can be entered within the range from -127 to 127. Select "SERVICE MODE" > "DISPLAY" > "PRINT INF"
to record the registration value for later restoration of the registration value.
"RESET SETTING" can clear the registration adjustment value.
Display Description
BK Bk ink tank lot number / Date of manufacture / Expiration date
C C ink tank lot number / Date of manufacture / Expiration date
M M ink tank lot number / Date of manufacture / Expiration date
Y Y ink tank lot number / Date of manufacture / Expiration date
PC PC ink tank lot number / Date of manufacture / Expiration date
PM PM ink tank lot number / Date of manufacture / Expiration date
Canon imagePROGRAF W8400PG Nozzle Check
BK
C
M
Y
PC
PM