Instruction manual

Troubleshooting and Repair
025-9416 137
Notes: Any errors during the reformat procedure are indicated in the following manner:
Fast toggle of the COM and MODEM lights followed by the COM light blinking
either once, twice, or three times indicates the stage at which the reformat
encountered an error. Then the MODEM light blinks several times indicating a
specific error. This sequence repeats every 10 seconds.
Contact Zetron Technical Support for assistance.
[ ] 9. Once the “End of reformat” sequence is reached, power down the paging terminal.
[ ] 10. Remove JP9 and JP10. (Leave JP10 in to disable the logon password. See Section 3 for
details.)
[ ] 11. Power-up the Model 640 and wait for completion of the boot sequence.
[ ] 12. Use MCU to restore the databases and voice prompts to the RAM disk.
[ ] 13. Reboot the terminal to initialize the database restoration.
The paging terminal is ready for normal operation.
Note: When updating from a version 1.11 or earlier ROM disk, the DigDataPolarity field in
the Transmitter Key Up Control database should be reversed (from the previous
setting) following the reformat procedure.
TROUBLESHOOTING ZLINK COMMUNICATIONS
The communications program that is required to access the paging terminal from a remote site
(ZLINK.EXE) should have been installed on the office computer (as a part of MCU) in Section
4. Since the computer environment is the hardest for us to predict and control, problems may
vary from incompatibility with modems to incorrect cables for the application.
Note: Remember that most configuration changes require a reboot for the paging terminal
to recognize the updates. This includes hardware settings (jumpers and switches) and
Model 640 database updates except in the Subscribers and System Databases.
Table 29 contains information on isolating communication problems between the Model 640 and
the office computer.
Table 29. ZLINK Troubleshooting Guide
Symptom Possible Problems Solution
Error “no response...” Com port contention Check that the modem is configured for a
unique port number.
Modem not configured for
“word result codes”
Check the modem manual for the proper
DIP switch settings.
External modem cable is
pinned out incorrectly
Check that the cable passes the signals
from pins 2-8 and 20 directly between the
computer and the modem.