Chapter 7 ___________________________________________________________ Troubleshooting
VAISALA ______________________________________________________________________ 261
CHAPTER 7
TROUBLESHOOTING
This chapter describes common problems, their probable causes and
remedies, and contact information.
CAUTION
The servicing of the equipment must be performed by qualified
personnel only.
CAUTION
The AC power switch and the optional battery backup switch must
always be turned off before attempting any service actions described in
this chapter.
WARNING
The equipment contains dangerous voltage of 230/115/100 VAC.
Status Messages
With each standard message (Message 1 and 2), a 20-character overall
status word is transmitted. The overall status word describes the current
status of the LT31 system in detail. Referring to Table 14 starting from
page 164 through Table 34 on page 173, host systems and users are able
to decode the status of the LT31 system
.
For the convenience of the user, the current status can be read by the
STATUS CHECK command on any user level. The user must connect
to the maintenance port via the maintenance or data line (see section
Entering and Exiting Command Mode on page 145).
The system
answers with an overview of the status of all active sub units
and a list of current events.
LT31 SYSTEM: OK
Transmitter unit: OK
Receiver unit: OK
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