Psion Workabout MX, Руководство по обслуживанию

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Confidential - PSION INDUSTRIAL PLC
Workabout MX Service Manual
Version 1.0 v
Table of Contents
Introduction.....................................................................................................1
Part Number Information................................................................................2
Serial Number Information .............................................................................2
Troubleshooting Guide ..................................................................................4
Exploded View - General Assembly ..............................................................6
Exploded View - Chassis Assembly..............................................................8
Exploded View - Drawer Assembly ...............................................................9
Spares Kits ....................................................................................................10
General Kits ...............................................................................................................10
Bottom Port Kits .........................................................................................................10
Drawer Kits.................................................................................................................11
Case Kits....................................................................................................................11
LCD Kits.....................................................................................................................12
PCB Kits.....................................................................................................................12
Dismantling the Workabout .........................................................................13
Tools Required ................................................................................................................13
Dismantling Procedure ....................................................................................................13
Dismantling the Chassis Assembly ..................................................................................14
Dismantling the Drawer Assembly ...................................................................................16
Selecting the PCB Type ...............................................................................17
Re-assembly Instructions ............................................................................18
Re-assembling the Drawer Assembly ..............................................................................18
Notes on Drawer Re-assembly ...................................................................................18
Re-assembling the Chassis Assembly .............................................................................19
Notes on Chassis Re-assembly ..................................................................................19
Final Re-assembly...........................................................................................................20
Notes on Final Re-assembly.......................................................................................20
Checking the Operation of the Options ......................................................21
Checking the RS232 Interface .........................................................................................21
Testing the TTL Interface ................................................................................................22
Testing the Barcode Interface..........................................................................................22
Expansion Interface......................................................................................23
RS232 AT/TTL Serial Interfaces ......................................................................................23
RS232 AT Serial/Barcode Interfaces ...............................................................................24
Circuit Description........................................................................................25
LIF Converter ..................................................................................................................25
Final Test.......................................................................................................26
Equipment.......................................................................................................................26
Test Setup.......................................................................................................................26
Test Sequence ................................................................................................................27