Service Manual
DS 350 Modular
© PAT
Rev. - 12/18/00 // CSH.
190118_-.DOC
8
Error Code Error
Cause
Elimination
Relay should be
energized but the
2nd contact is
signaled to be off or
the 2nd contact is
signaled to be on
whereas the relay
should be de-
energized.
•
Main board is defective
•
Replace main board.
E72
...
E77
Faulty
acknowledgment of
relays K2...K7 on
the connection
board.
•
refer to E71
•
refer to E71
E91
No data trans-
mission form the
console to the
•
24 V supply of the console is
interrupted
•
Check 24 V at terminal
X1 of the console
electronics
central unit
•
Interruption or accidental
ground in the line between
console electronics and central
unit
•
Check the connection
console electronics -
central unit. In case of an
accidental ground, the
transmitter module of the
console electronics might
be damaged. Therefore,
replaces the console
electronics.
•
Transmitter/receiver module is
defective
•
Exchange console
electronics or LMI main
board resp.
E92
Error in the data
transmission from
console to central
unit
•
Loose connection in the line
between console electronics
and central unit
•
Transmitter/receiver module is
defective
•
Check the connection
between console
electronics and central
unit
•
Exchange console
electronics or LMI main
board resp.
E93
Error in the data
transmission from
the central unit to
the console
•
refer to E92
•
refer to E92
E94
No data trans-
mission from the
central unit to the
console
•
Interruption or accidental
ground in the cable between
central unit and console
•
Check wiring to the
console (in case of
accidental ground,
replace console
electronics, too).
•
5 V supply of the computer in
the central unit is missing
•
Check connection to the
power unit
•
5 V supply is too low
•
Exchange the LMI main
board
