Kronos Timekeeper 400 Series - Page 4

Contents
iv Kronos Incorporated
Chapter 3: Servicing the Series 400 Terminal
Handling Static-Sensitive Components ..................................................... 3-2
Saving and Restoring Data ......................................................................... 3-3
Terminal Service Utility ......................................................................3-3
SL400 for DOS .................................................................................... 3-9
Programming the Series 400 Terminal .............................................. 3-16
Removing and Replacing Parts of the Terminal ..................................... 3-19
Removing the Battery Backup Board ................................................ 3-22
Replacing the Battery Backup Board ................................................ 3-23
Removing the I/O Board ................................................................... 3-24
Replacing the I/O Board .................................................................... 3-26
Removing the Mainboard .................................................................. 3-27
Replacing the Mainboard ..................................................................3-28
Removing the Keypad ....................................................................... 3-30
Replacing the Keypad ........................................................................ 3-31
Removing the Keypad Membrane ..................................................... 3-32
Replacing the Keypad Membrane .................................................... 3-33
Removing the LCD ............................................................................ 3-33
Replacing the LCD ........................................................................... 3-34
Removing the Reader Cover .............................................................3-35
Replacing the Reader Cover .............................................................. 3-36
Upgrading Memory .................................................................................. 3-38
RAM Upgrade ................................................................................... 3-38
Boot-EPROM Upgrade .....................................................................3-41
Chapter 4: Troubleshooting
Terminal Hardware Failures ...................................................................... 4-2
Power-Up Failures ..................................................................................... 4-7
Badge-Reading Problems ........................................................................... 4-9
Keypad Problems ..................................................................................... 4-11
Lead-Acid Battery Backup Failures ......................................................... 4-12
Communications Problems ...................................................................... 4-14
Serial Troubleshooting ...................................................................... 4-14
Ethernet Troubleshooting .................................................................. 4-16