Remedial Maintenance; Recommended Spare Parts; Repair Procedures - Honeywell TA3840 Maintenance Manual

TA3840R Remote display unit
Observation
No display, indicator 5 Vdc off.
No display or display erratic, despite indicator
5 Vdc on.
Some key on keyboard unefficient.
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.
Erratic working, no communication with all sensors,
no communication with external application.
(*) 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.
Doc No: MM5008E – Revision 6 – ENG
Likely cause
- No proper connection with
the TA3840C rack.
- Ribbon cable connectors
badly engaged on LCD
display or CPU board.
- LCD display board out of
service.
- Ribbon cable connector from
front face badly engaged on
CPU board.
- Front face keyboard out of
service.
- Ribbon cable connector from
front face badly engaged on
CPU board.
- Front face indicators out of
service.
- Not correct operation.
Data Processing Racks
TA3840 Maintenance Manual
Remedy
- Check and secure the cable
of connection with the
TA3840C rack.
- Check that the ribbon cable
connectors are well engaged.
- Replace the LCD display
board (*).
- Check that the green ribbon
cable connector is well
engaged on CPU board.
- Replace the front face (refer
to "Electronic boards"
paragraph in this manual).
- Check that the green ribbon
cable connector is well
engaged on CPU board.
- Replace the front face (refer
to "Electronic boards"
paragraph in this manual).
- Replace the communication
board (*).
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