First issue 06 / 02
13
The power LED
is lighting green
No
Yes
Yes
Yes
No
Failure in the
MAIN module
Disconnect PM
connector
Failure in the POWER module
No
Failure in the
MAIN module
Does the AC relay takes more
than 5 seconds to switch OFF,
after switching the power ON?
Failure in the PDP
module or the
POWER unit
Failure in the
POWER unit
Failure in the
MAIN module
Switch the power ON
and listen to the
AC relay
Is it possible to hear the
AC relay switching ON?
No
Yes
No
Yes
Is "H" maintained at
Pin 79 of IC9501
(MAIN module)?
No
Yes
Is "H" maintained at Pin
3 of PM connector
(MAIN module)?
No
Yes
Is "H" maintained at Pin
3 of IC9501
(MAIN module)?
Failure in the
PDP module
Disconnect the PV, PQ, PN
and PA connectors one after
another (others kept connected)
and confirm that the power
supply is available. If it is not
available, the POWER unit is
out of order. Else, the circuit
of the disconnected connector
is out of order.
Is "H" maintained at Pin
3 of PM connector
(MAIN module)?
Is "H" maintained at Pin
1 of PD connector
(POWER module)?
No
Yes
Is the power supply built-up when
PD,PH and AD connectors are
disconnected (MAINmodule)?
Summary of Contents for 50WS94E
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