Corrective Actions For Displayed Warnings; Maintenance Tank Near; Ink Low; Maintenance Request - Epson Stylus Pro 4400 Service Manual

EPSON Stylus Pro 4400/4450/4800/4880/4880C

3.2.2 Corrective Actions for Displayed Warnings

Warnings replace the "READY"/"PRINTING" message in the LCD to notify the
user of the condition, but printing may continue because printer operations are
not affected.
A warning message cannot be cleared until the cause of the warning has been
resolved.
The following explains corrective actions for when the warnings are displayed.

MAINTENANCE TANK NEAR

Item
LCD Panel message MNT TK NEAR FULL
LED display Ink check LED: Blink
Explanation Generated when capacity of the Maintenance Tank has
reached less than 5%.
Recovery Replace the Ink Cartridge with new one.

INK LOW

Item
LCD Panel message INK LOW
LED display Ink check LED: Blink
Explanation Caused when remaining ink quantity falls below 5%.
Recovery Replace the Maintenance Tank with new one.
Troubleshooting
Description
Description
Troubleshooting Based on Panel Messages

MAINTENANCE REQUEST

LCD Panel message
MNT REQ nnnn
("nnnn" shows the code for the target replacement part.)
LED display
Paper check LED: Flashes at 5-second intervals.
Display code
Displays bit values assigned in Table 3-3 as "nnnn" in hexadecimal.
Table 3-3. Bit Assignment
Bit Request object
0 No occurrence in this
product
1 CR life
2 No occurrence in this
product
3 Battery shut off
4 No occurrence in this
product
5 No occurrence in this
product
6 Cleaning Unit
7 Date not set
8 Battery pressure
9 Paper feed roller life
10 Reserved
:
31 Reserved
Explanation
Generated when the life of maintenance- required part expires shortly or
an error related to a lithium battery for RTC backup has occurred.
Revision C
Cause
---
The number of CR movement cycles has
reached predetermined value.
---
RTC backup battery is shut off
---
---
Pump counter has reached predetermined
value.
Date is not set
RTC backup battery pressure is temporally
low.
The number of ASF paper feeding has reached
predetermined value.
---
---
162