Table of Contents
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Table of Contents
Related Manuals for Psion Workabout MX
Summary of Contents for Psion Workabout MX
- Page 1 Workabout MX Service Manual...
- Page 3 Solid State Disk are trademarks of Psion PLC. Some names referred to are registered trademarks. Psion Industrial reserves the right to change the designs and specifications of its products at any time without prior notice. Psion part no: A6124-0002-01 Version 1.0 - September 1998...
- Page 4 Radio and Television interference. Shielded cables, suitable for the Workabout, can be obtained from an authorised Psion dealer. If the user modifies the Workabout or the Multiple Docking Station, and these modifications are not approved by Psion, the FCC may withdraw the user's right to operate the equipment.
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Page 5: Table Of Contents
Confidential - PSION INDUSTRIAL PLC Workabout MX Service Manual 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... -
Page 7: Introduction
The purpose of this service manual is to give an overview of the service procedures that may need to be performed on the Workabout by either a third party user, or a registered Psion service centre. It has been designed to be used by the service and repair technicians who have the responsibility of maintaining the products. -
Page 8: Part Number Information
Part Number Information The part numbers referred to throughout this manual typically do not show the revision suffix. Consequently, refer to your Psion distributor for information on the latest revision of a specific part. The format of the part numbers issued by Psion Industrial is as follows:... - Page 9 Confidential - PSION INDUSTRIAL PLC Workabout MX Service Manual The table below lists the variant code for Workabout MX variants that are expected to be shipping within a few months of product launch. Further codes will be released along with new variants.
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Page 10: Troubleshooting Guide
Confidential - PSION INDUSTRIAL PLC Workabout MX Service Manual Troubleshooting Guide Fault Cause Cure Machine fails to 1 Discharged/faulty 1 Replace alkalines/replace or recharge boot up. batteries. Nicad pack. 2 Main PCB fault. 2 Remove internals from machine and check Main Power FFC ZIF Connector. - Page 11 Confidential - PSION INDUSTRIAL PLC Workabout MX Service Manual Fault Cause Cure No Bar Code 1 Damaged expansion 1 Replace Drawer Assembly. communications FFC. possible. 2 Warped Connector 2 Dismantle machine, remove and Block Arm. replace Connector Block. 3 Loose ZIF connector.
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Page 12: Exploded View - General Assembly
Confidential - PSION INDUSTRIAL PLC Workabout MX Service Manual Exploded View - General Assembly The following illustration shows the general assembly, dismantled into replaceable subassemblies and components. Note that the numbered circles in the illustration correspond to the items in the REF. column of Table 1. - Page 13 Confidential - PSION INDUSTRIAL PLC Workabout MX Service Manual Table 1 REF. PART NO. DESCRIPTION A6204000601 LBL BOTTOM A6204006301 LBL BTM RS232/LIF A6224000201 LBL BTM IRDA/LIF A83020003 SCREW M2.5x10MM POZ.CS 2821005001 MX ALPHA CASE + LATCH MX NUMERIC CASE + LATCH...
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Page 14: Exploded View - Chassis Assembly
Confidential - PSION INDUSTRIAL PLC Workabout MX Service Manual Exploded View - Chassis Assembly The following illustration shows the chassis assembly, dismantled into replaceable subassemblies and components. Note that the numbered circles in the illustration correspond to the items in the REF. column of Table 2. -
Page 15: Exploded View - Drawer Assembly
Confidential - PSION INDUSTRIAL PLC Workabout MX Service Manual Exploded View - Drawer Assembly The following illustration shows the Drawer Assembly, dismantled into subassemblies and components. + Note:- The Drawer Assembly is normally replaced as a complete kit (see Spares Kits on page 10). -
Page 16: Spares Kits
The following tables show the listed spares kits that are offered to service centres enabling thorough and complete service and repair work. These tables are correct at the time of printing this manual. Please refer to the latest Psion Industrial spares list for current information. -
Page 17: Drawer Kits
Confidential - PSION INDUSTRIAL PLC Workabout MX Service Manual Drawer Kits PART NUMBER DESCRIPTION 1828002001 MX DRAWER KIT - RS232/TTL MX RS232/TTL DRAWER BTM SEAL 1828002101 MX DRAWER KIT - RS232/BCR MX RS232/BCR DRAWER BTM SEAL 1828002201 MX DRAWER KIT - INT WAND... -
Page 18: Lcd Kits
Confidential - PSION INDUSTRIAL PLC Workabout MX Service Manual PART NUMBER DESCRIPTION 1828003301 MX CASE KIT SCANNER NUMERIC MX SCANNER NUMERIC CASE + LATCH LBL MX 2MB MEMORY LBL MX REAR CASE SCREW M2.5x10MM POZ.CS LBL BOTTOM BOTTOM SEAL LBL BTM RS232/LIF... -
Page 19: Dismantling The Workabout
Workabout. 3 Remove the fuse from its location beneath the main batteries. If the fuse is damaged, replace it with a 1.25 AMP ‘Fast Blow’ glass fuse, 5mm ∅, 20mm long, Psion part number A4900-0041. 4 Remove the 2 screws from the base of the Workabout. -
Page 20: Dismantling The Chassis Assembly
Confidential - PSION INDUSTRIAL PLC Workabout MX Service Manual Drawer Locating Clips - Derail from the Chassis Expansion FFC ZIF Main Power Drawer Assembly FFC ZIF Main Power FFC Chassis Assembly 7 Unclip the Main Power FFC from its ZIF Connector. - Page 21 Confidential - PSION INDUSTRIAL PLC Workabout MX Service Manual 6 If fitted, remove the Decoder or Expansion PCB: a) On a Scanner Workabout, remove the FFCs from the ZIFs and then remove the 2 retaining screws on the Support Moulding.
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Page 22: Dismantling The Drawer Assembly
Confidential - PSION INDUSTRIAL PLC Workabout MX Service Manual 9 Unclip the LCD ZIF from the Main PCB. There is a hole in the CPU frame moulding to allow you to do this. CPU Frame Moulding LCD ZIF Connector LCD FFC 10 Remove the Main PCB Screw. -
Page 23: Selecting The Pcb Type
Confidential - PSION INDUSTRIAL PLC Workabout MX Service Manual + Note:- As a general rule, replace the Top Cap Seal and Piezo Seal whenever they are removed for servicing. 3 Remove the Expansion FFC if fitted. Ease the FFC out of the case by sliding it backwards and forwards length-ways and pulling it gently up out of the insertion slot in the SSD Drawer moulding. -
Page 24: Re-Assembly Instructions
Confidential - PSION INDUSTRIAL PLC Workabout MX Service Manual Re-assembly Instructions The Workabout can be re-assembled by following the flow diagrams below. The flow diagrams show the correct sequence for re-assembling the subassemblies. Also refer to the diagrams in the Dismantling Procedure steps on page 13, in reverse order, as you perform each re-assembly step. -
Page 25: Re-Assembling The Chassis Assembly
Confidential - PSION INDUSTRIAL PLC Workabout MX Service Manual Step 3 Take care not to damage the Main Battery and Lithium Battery contacts. Step 5 Ease the FFC into the case by sliding it backwards and forwards while pushing it gently down through the insertion slot in the SSD Drawer moulding. -
Page 26: Final Re-Assembly
The Workabout has now been re-assembled. Notes on Final Re-assembly Step 5 Take care to ensure that the Chassis Seal fits correctly. Step 7 The fuse must be a 1.25 AMP ‘Fast Blow’ glass fuse, 5mm ∅, 20mm long, Psion part number A4900-0041. Version 1.0... -
Page 27: Checking The Operation Of The Options
Confidential - PSION INDUSTRIAL PLC Workabout MX Service Manual Checking the Operation of the Options To accurately check the operation of fitted options, you need the following items: A bar code reader or a scanner that gives a TTL output. -
Page 28: Testing The Ttl Interface
Confidential - PSION INDUSTRIAL PLC Workabout MX Service Manual 7 When a serial link has been established between the PC and the Workabout, any characters you type on the Workabout appear on the PC screen and vice-versa. This indicates that the RS232 serial channel is working correctly. -
Page 29: Expansion Interface
Confidential - PSION INDUSTRIAL PLC Workabout MX Service Manual Expansion Interface The interfaces built into the Workabout are accessible by plugging in appropriate connectors or adapters at the top or bottom of the unit. The top connectors provide RS232 AT and either a TTL-level serial interface or a bar code wand interface. -
Page 30: Rs232 At Serial/Barcode Interfaces
Confidential - PSION INDUSTRIAL PLC Workabout MX Service Manual The 9-way D-type female RS232 AT interface connector pin allocation is shown below: Pin No. Signal Remarks Name Serial Receive - input Serial Transmit - output VCCEXT 5V 200mA max Handshake - input... -
Page 31: Circuit Description
Confidential - PSION INDUSTRIAL PLC Workabout MX Service Manual The 9-way D-type male RS232 AT interface connector pin allocation is shown below: Pin No. Signal Remarks Name Handshake - input Serial Receive - input Serial Transmit - output Handshake - output... -
Page 32: Final Test
Confidential - PSION INDUSTRIAL PLC Workabout MX Service Manual Final Test The section describes how to set up the Final Test and perform the test sequence on a Workabout. + Note:- These instructions do not describe how to perform tests on the Workabout Peripheral product range. -
Page 33: Test Sequence
Confidential - PSION INDUSTRIAL PLC Workabout MX Service Manual Main Battery switch DC Power to STANDBY switch to OFF EXP SUPPLY OK STANDBY WORKABOUT FINAL TEST UNIT THERMISTOR FAULT BAT. GROUND FAULT BATTERY CURRENT LIF CONNECTOR GROUND DETECT PROBE Insert the Ground... - Page 34 Confidential - PSION INDUSTRIAL PLC Workabout MX Service Manual The Final Test Program is downloaded via the LIF cable, and the following menu is displayed on the Workabout: MENU - FINAL - MX - ‘Version Number’ ‘O/S’ RAM ‘size’ LANG ‘language’...
- Page 35 Confidential - PSION INDUSTRIAL PLC Workabout MX Service Manual 9 Check all the Workabout keys: a) Press any key to begin. A full keyboard map is displayed. b) Press each key in turn and note that the selected key image changes from dark grey to light grey.
- Page 36 Confidential - PSION INDUSTRIAL PLC Workabout MX Service Manual Version 1.0...