Epson SQ-B50/2550 Technical Manual page 219

CHAPTER 5
TROUBLESHOOTING
5.1 GENERAL 5-1
5.2 UNIT REPLACEMENT 5-1
5.3 SEIPS/SANPSE Power Board Unit Repair 5-10
5.4 DIAGNOSTICS TOOL 5-13
5.4.1 Overview 5-13
5.4.2 Description 5-13
5.4.3 How to setup 5-13
5.4.4 Functions and use of diagnostic ROM 5-13
LIST OF FIGURES
REV.-A
Figure 5-1.
Figure 5-2.
Figure 5-3.
Figure 5-4.
Figure 5-5.
Figure 5-6.
Table 5-1.
Table 5-2.
Table 5-3.
Table 5-4.
Table 5-5.
Table 5-6.
Unit Replacement-1 5-3
Unit Replacement-2 5-4
Unit Replacement-3 5-5
Unit Replacement-4 5-6
Unit Replacement-5 5-7
Unit Replacement-6 5-8
LIST OF TABLES
Unit Replacement Numbers 5-1
Symptom and Reference Pages 5-2
SEIPS/SANPSE Board (CN2) Output Voltage 5-3
Paper Feed Motor Coil Resistance 5-6
SEIPS/SANPSE Board Parts List 5-9
SEIPS/SANPSE Board Unit Repair 5-10
5-i