6.27.1
POWER
SUPPLY REMOVAL
The power supply chassis may
be
removed
as
follows.
(1)
Disconnect power.
WARNING
VOLTAGES MAY BE PRESENT IN THE POWER SUPPL Y
AREA WHICH ARE CONSIDERED DANGEROUS
TO
LIFE.
THE
EMERGENCY UNLOAD AND MOTOR START
CAPACITORS
MA
Y REMAIN CHARGED FOR A
CON-
SIDERABLE LENGTH OF TIME, EVEN THOUGH POWER
HAS
BEEN REMOVED. OBSERVE EXTREME CAUTION.
(2)
Extend the unit out
of
the cabinet and remove the dust cover (refer to Paragraph
2.2, Step (9).
(3)
Position the Logic and Servo PCBAs to the maintenance position.
(4)
Disconnect the power switch cable connector J501.
(5)
Disconnect the power supply cables
P212
and
P213
at the Servo PCBA.
(6)
Remove the high voltage cover from the Motor Control PCBA and disconnect
P401, P402, P403,
or
P404.
.
(7)
Remove the belt guard (refer to Paragraph 6.19.1, Steps
(1)
and (2).
(8)
On
200
tpi models, the Read/Write PCBA and Temperature Compensation
PCBA, with retaining hardware, should
be
removed
as
needed prior to power
supply
removal.
(9)
Remove 8 (or
9,
depending upon the model) No.
10
screws which secure the
power supply chassis to the base. Carefully lower the power supply chassis out
and away from the base.
CAUTION
AVOID SQUEEZING
ANY
CABLES BETWEEN
THE
BASE
AND CHASSIS DURING REMOVAL
AS
DAMAGE
TO
THE
CABLING CAN RESULT.
6.27.2
POWER
SUPPLY INSTALLATION
Installation of the power supply is accomplished
as
follows.
(1)
Verify that power is removed from the drive.
WARNING
VOLTAGES MAY BE PRESENT IN THE
POWER
SUPPLY
AREA WHICH ARE CONSIDERED DANGEROUS
TO
LIFE.
THE
EMERGENCY UNLOAD AND
MOTOR
START
CAPACITORS
MA
Y REMAIN CHARGED FOR A
CON-
SIDERABLE LENGTH OF TIME, EVEN THOUGH POWER
HAS
BEEN REMOVED. OBSERVE EXTREME CAUTION.
(2)
Extend the unit out
of
the cabinet and remove the dust cover (refer
to
Paragraph
2.2, Step (9).
(3)
Position the Logic and Servo PCBAs to the maintenance position.
(4)
Check connections at power transformer primary and ensure that it is connected
for the correct
line voltage (refer to Figure 4-14 for line voltage connections).
(5)
Secure the power supply in place using the screws removed in Step
(9)
of
Paragraph 6.27.1.
6-91
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