Fault Classification; Chart No. 2; Power Faults - Toshiba Strata DK24 Installation And Maintenance Manual

STRATA DK FAULT FINDING
SECTION 400-096-500
SEPTEMBER 1992
From
PWR
Pages 6
& 10
Start here to clear

Power faults.

Did
you arrive
here from the

Fault Classification

Flowchart?
YES
Power down and
lightly press all
power supply
circuit breakers.
Is
YES
fault
cleared?
NO
Remove all
PCBs and power
down and press
breakers.

CHART NO. 2

POWER FAULTS
Go to
Page 6
NO
to classify
fault.
END
Is
power
present at the
NO
power supply and
backplane connectors
P1, P4?
YES
Refer to Voltage
Distribution Tables
B, C, and D and
install PCBs one at a
time until faulty PCB
is found.
Did
replacement
NO
of the faulty PCB
correct the
problem?
YES
-8-
Replace
power
supply.
Is
YES
fault
cleared?
NO
Call Service
Center for
assistance.
Tag the
defective unit(s)
and return for
repair.