Epson TM-U375 - Page 9

CONTENTS
4.1 TROUBLESHOOTING ............................................................... 4-1
4.1.1 Self-test........................................................................... 4-1
Initiating the self-test..................................................... 4-1
Self-test standby ............................................................ 4-1
Ending the self-test ....................................................... 4-1
4.1.2 Troubleshooting Flowchart........................................... 4-2
1 POWER LED does not light ..................................... 4-3
2 JOURNAL OUT LED is lit ......................................... 4-4
3 ERROR LED is lit ...................................................... 4-4
4 ERROR LED is flashing ............................................ 4-5
5 Paper is not loaded by pressing down paper load
switch ........................................................................ 4-5
6 Self-test is not normal .............................................. 4-6
7 Data from host is not printed normally................... 4-7
4.1.3 Troubleshooting Tables ................................................ 4-8
4.2 MAJOR PART REPLACEMENT................................................ 4-13
4.2.1 Fuse Replacement ......................................................... 4-13
4.2.2 Print Head Unit Replacement........................................ 4-13
4.2.3 J Guide Assembly B (Cutter Blade) Replacement ..... 4-13
4.3 ERROR TYPES AND COUNTERMEASURES .......................... 4-14
4
CHAPTER 4
TROUBLESHOOTING
CONFIDENTIAL