Table Of Contents - Epson MX-80 Technical Manual

LIST OF FIGURES
CHAPTER 3
DISASSEMBLY, ASSEMBLY AND TROUBLESHOOTING
Fig. 3.1 Removal of Manual Paper Feeding Knob 3-3
Fig. 3.2 Removal of 4 Screws 3-3
Fig. 3.3 Locations of Respective Components 3-4
Fig. 3.4 Dismounting of Driver Circuit Board 3-5
Fig. 3.5 Removal of Control Circuit Board 3-6
Fig. 3.6 Removal of Power Transformer 3-7
Fig. 3.7 Dismounting of Fuse and Filter Circuit Board 3-8
Fig. 3.8 Dismounting of M-3210 Printer Mechanism 3-9
Fig. 3.9 Dismounting of Print Head Unit 3-10
Fig. 3.10 Dismounting of Home Position Sensor Assy 3-10
Fig. 3.11 Unsoldering of Four Lead Wires 3-11
Fig. 3.1 2 Dismounting of PTS Sensor Board Assy 3-11
Fig. 3.13 Dismounting of Timing Belt Motor Assy 3-12
Fig. 3.14 Unsoldering of Lead Wires 3-13
Fig. 3.15 Dismounting of Paper Feeding Motor Assy 3-13
Fig. 3.1 6 Dismounting of PE Board Assy 3-1 4
Fig. 3.17 Normal Waveform of Signal PSEN 3-20
Fig. 3.18 Normal Waveform of Signal ALE 3-20
Fig. 3.19 Normal Waveform of Signal SYNC 3-21
CHAPTER 4
MAINTENANCE
Fig. 4.1 Lube Points and Bonding Points 4-3
Fig. 4.2 Applied Voltage vs. Driving Pulse Width 4-4
Fig. 4.3 Timing Signal PTS (Pin No.39 of 8049) 4-5
Fig. 4.4 Relationship between Timing Signal and Signal PRAV 4-5
Fig. 4.5 Adjustment of PTS Sensor Board 4-6
Fig. 4.6 Relationship between Timing Signal and Reset Signal 4-6
Fig. 4.7 Adjustment of Home Position Sensor Assy 4-7
CHAPTER 5
CIRCUIT DIAGRAMS
Fig. 5.1 Connection Diagram of Control Circuit 5-3
Fig. 5.2 Connection Diagram of Driver Circuit 5-4
Fig. 5.3 Component Layout of Control Circuit 5-5
Fig. 5.4 Component Layout of Driver Circuit 5-6
RFW A