Honeywell TA3840, Руководство по обслуживанию

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Doc No: MM5008E – Revision 6 – ENG Data Processing Racks
TA3840 Maintenance Manual
19
TA3840R Remote display unit
Observation Likely cause Remedy
No display, indicator 5 Vdc off.
- No proper connection with
the TA3840C rack.
- Check and secure the cable
of connection with the
TA3840C rack.
No display or display erratic, despite indicator
5 Vdc on.
- Ribbon cable connectors
badly engaged on LCD
display or CPU board.
- Check that the ribbon cable
connectors are well engaged.
- LCD display board out of
service.
- Replace the LCD display
board (*).
Some key on keyboard unefficient.
- Ribbon cable connector from
front face badly engaged on
CPU board.
- Check that the green ribbon
cable connector is well
engaged on CPU board.
- Front face keyboard out of
service.
- Replace the front face (refer
to "Electronic boards"
paragraph in this manual).
Some indicators unefficient : communications in
order and Rx or Tx not flashing, system fault on
display and indicator not flashing, display in order
and 5 Vdc indicator not lit.
- Ribbon cable connector from
front face badly engaged on
CPU board.
- Check that the green ribbon
cable connector is well
engaged on CPU board.
- Front face indicators out of
service.
- Replace the front face (refer
to "Electronic boards"
paragraph in this manual).
Erratic working, no communication with all sensors,
no communication with external application.
- Not correct operation.
- Replace the communication
board (*).
(*) refer to the relevant paragraph in "REMEDIAL MAINTENANCE" chapter.
4. REMEDIAL MAINTENANCE
Recommended spare parts
Two standard fuses kit are supplied by Honeywell Marine with the TA3840 system.
●
Fuses kit for TA3840C and TA3840S class IIB: code 34766.
●
Fuses kit for TA3840C and TA3840S class IIC: code 34767.
In case of other spare parts request, refer to "Spare parts list" chapter.
Rep
air procedures
In case of intervention on the electronic boards and if the jumpers are removed,
refer to the MI5008E installation manual to check their location.