IBM 2142, 2140 manual Power Supply, Fan, Yes 002, Yes 005

Power Supply

001

– Check

all

drive

and

power supply connections

for

proper

installation.

– Power-off

the system unit.

– Check

the

power

cord for continuity. Replace if necessary.

– Check

for

the correct line voltage from the

power outlet, and

verify that the

voltage

selector

switch (if present) is set

for

the

correct

voltage.

– Power-on

the

system

unit.

DOES

THE

POWER

SUPPLY

FAN

RUN?

Yes

No

002

– Go to Step 004.

003

– Go to Step 009 on page 2-36.

004
(From	step		002)
– Disconnect			the	power		cord from		the back of the system unit.
– Disconnect			all	power		and	switch	cable		connectors	from the system board
and	the		power	supply.
– Disconnect			the	power		connectors		to	all	drives.
– Locate		the power			supply		on/off	cable connector (three-wire connector) and
make	a	connection			(jumper)		between		the	black and	white wires.
– Reconnect			the	power		cord.
DOES THE POWER			SUPPLY	FAN	RUN?
Yes	No

005

Replace the power supply.

006

(From step 010)

–With the system powered on and the power supply fan running, check the voltages at the power supply connectors for the system board and all drive connectors, as shown in the following figures.

2-34