Troubleshooting - Ithaca 75 User Manual

iv
Series 70 Maintenance Manual
DISASSEMBLY
TROUBLESHOOTING
Necessary Tools .......................................................................................19
Transport-Auto Cutter Assembly ..............................................................20
Removing the Transport-Auto Cutter Assembly................................20
Disassembling the Transport-Auto Cutter Assembly .........................22
Auto Cutter Assembly (Without Transport) ..............................................26
Removing the Auto Cutter Assembly ................................................26
Disassembling the Auto Cutter Assembly .........................................28
Base Assembly .........................................................................................30
AC Switch Assembly and Power Transformer...........................................32
Serial Interface Board...............................................................................34
Control Board ..........................................................................................36
Interconnect Board ...................................................................................38
Journal Bucket Assembly..........................................................................40
Removing the Journal Bucket Assembly ...........................................40
Disassembling the Journal Bucket Assembly.....................................42
Carriage Assembly ...................................................................................44
Space Motor Assembly ....................................................................44
Carriage Shaft Bearing and Space Rack ...........................................46
Feed Roll Shaft.........................................................................................48
Linefeed Motor Assembly.........................................................................50
Determining the Problem ..........................................................................53
Fixing the Problem ...................................................................................54
Checking Connections and Resistance.......................................................72
Printhead .........................................................................................72
Space Motor Assembly ....................................................................73
Linefeed Motor ................................................................................74
19
53