Disassembly, Assembly And Troubleshooting - Epson MX-80 Technical Manual

CHAPTER 3
DISASSEMBLY, ASSEMBLY AND
TROUBLESHOOTING
CONTENTS
3.1 General ................................................ 3-1
3.2 Tools and Measuring Instruments ....................... 3-1
3.3 Disassembly and Assembly ............................. 3-3
3.3.1 Removal of Upper Case ............................. 3-3
3.3.2 Disassembly of electric ciucuit block ................ 3-5 .
3.3.3 Disassembly of M-321 0 printer mechanism block .... 3-9
3.4 Symptoms of Trouble and Repair ........................ 3-15
3.4.1 General ............................................ 3-15
3.4.2 Troubleshooting by symptom ........................ 3-16
3.4.3 Troubleshooting of control circuit board ............. 3-20
REV. A