IBM 6400

Table of Contents
6 Adjustment Procedures ..................................... 151
Introduction..........................................................................................151
List Of Adjustments .......................................................................151
Preparing The Printer For Maintenance ..............................................152
Returning The Printer To Normal Operation........................................153
Belt, Paper Feed Timing, Adjustment..................................................154
Belt, Platen Open, Adjustment.............................................................156
Paper Drive Motor Pulley Alignment....................................................158
Paper Scale Alignment ........................................................................160
Platen Gap Adjustment........................................................................162
Platen Open Motor Pulley Alignment...................................................164
Ribbon Guide Alignment......................................................................166
Splined Shaft Skew Adjustment...........................................................168
Adjusting The End Of Forms Distance ................................................169
Hammer Phasing Adjustment..............................................................173
Downloading 6400 Microcode From The World Wide Web.................175
Loading Flash Memory ........................................................................176
Coil Temperature Adjustment..............................................................181
Set Shuttle Speed................................................................................182
Ethernet Initialization ...........................................................................183
7 Replacement Procedures
And Illustrated Parts Lists....................................... 185
Organization Of This Chapter..............................................................185
Section I: Replacement Procedures ....................................................186
List Of Procedures ........................................................................186
Belt, Paper Feed Timing ...............................................................188
Belt, Platen Open..........................................................................189
Circuit Board: Controller................................................................190
Circuit Board: Power Supply .........................................................192
Circuit Breaker ..............................................................................193
Coax/Twinax Multi-Platform Interface ...........................................194
Connector Shells...........................................................................195
Connector Stiffening Clips.............................................................198
Cover Assembly, Hammer Bank / Ribbon Mask ...........................200
Cover Assembly, Shuttle...............................................................203
Cover Assembly, Top, Pedestal Model .........................................204
Dashpot.........................................................................................205
Doors, Cabinet, Reversing ............................................................206
Ethernet Interface Assemblies ......................................................207
Fan Assembly, Cabinet Exhaust...................................................208
Fan Assembly, Card Cage ............................................................209