Overview; Preliminary Check; Troubleshooting Procedure - Epson Stylus Pro 7700 Service Manual

Large format color inkjet printer
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Epson Stylus Pro 7700/7710/7700M/7710M/7900/7910/9700/9710/9900/9910/WT7900/WT7910/9890/9908/7890/7908

3.1 Overview

This section explains the basic procedure for troubleshooting problems on the printer
quickly and efficiently.

3.1.1 Preliminary Check

Make sure to verify or perform the following basic items whenever servicing the
printer.
1.
There is no foreign material which interferes with the proper operation of the
printer.
2.
Print the status sheet, and check the information printed on the sheet to find out
possible causes of the error; if the main units have reached their end of life, or if
there is something wrong with the user-defined panel settings.
3.
Both outside and inside of the printer are free from significant dirt. Clean it if
significant dirt is observed.
4.
None of the parts or components of the printer are missing, chipped or damaged.
5.
All of the harnesses are free from damages and connected properly (vertically and
correctly) to their connectors.
6.
The cams and gears in the printer mechanism are engaged correctly showing no
signs of wear.
7.
When smudges appear on printed pages, clean the rubber rollers in the printer
mechanism if it solves the problem.
8.
The rubber rollers in the printer mechanism are engaged correctly showing no
signs of wear.
TROUBLE SHOOTING
When handling the lithium battery used for backup of the RTC on
W A R N I N G
the main board, strictly follow the safety instructions given in
"4.1.1 Precautions"
Before disassembling/reassembling the printer, be sure to turn
C A U T I O N
the power OFF, confirm the panel display disappears, and
unplug the power code.
Be sure to use the specified tools for maintenance/repair.
To maintain the product's quality, be sure to use the specified
lubricant and adhesive.
Be sure to perform the adjustments as required.

3.1.2 Troubleshooting Procedure

Follow the flowchart given below to troubleshoot problems efficiently.
Occurrence of Troubles
Error message is displayed on
the LCD display.
(See P.107)
Overview
(See P
167).
Print Quality Troubles
(See P.149)
Confidential
Revision I
106

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This manual is also suitable for:

Stylus pro 7900Stylus pro 9900Stylus pro wt7900Stylus pro 7710mStylus pro wt7910

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