Epson Stylus Pro 4800 Portrait Edition, Service Manual

Page: 162 / 506

EPSON Stylus Pro 4400/4450/4800/4880/4880C Revision C
Troubleshooting Troubleshooting Based on Panel Messages 162
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
INK LOW
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.
†
Explanation
Generated when the life of maintenance- required part expires shortly or
an error related to a lithium battery for RTC backup has occurred.
Item Description
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.
Item Description
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.
Table 3-3. Bit Assignment
Bit Request object Cause
0 No occurrence in this
product
---
1 CR life The number of CR movement cycles has
reached predetermined value.
2 No occurrence in this
product
---
3 Battery shut off RTC backup battery is shut off
4 No occurrence in this
product
---
5 No occurrence in this
product
---
6 Cleaning Unit Pump counter has reached predetermined
value.
7 Date not set Date is not set
8 Battery pressure RTC backup battery pressure is temporally
low.
9 Paper feed roller life The number of ASF paper feeding has reached
predetermined value.
10 Reserved ---
:
31 Reserved ---