IBM ibm 3745 MAPs , 2-22

3745 MAPs
009
Exchange the PS2. Go to “PS2 and
Primary Power Box Exchange
Procedure” on page 4-69.
010
– Check the position of the CB1 on the
primary power box. Refer to Figure 4-1
on page 4-3 for location.
Is the CB1 in the ON position?
Yes No
011
–Switch the CB1 ON.
– Power ON the 3745.
Is the 3745 powering ON now?
Yes No
012
Go to Step 001 on page 2-21
013
Go to “CE Leaving Procedure” on
page 4-102.
014
– Check the ac main voltage:
Power the 3745 OFF as follows:
– Put the power control in local
mode:
- Using Power Control, scroll
till the value is 3.
- Press Validate.
– Press Power Off.
Refer to Figure 4-35 on page 4-30
and do the following:
Remove the PS1 input power cord at
the Primary power box connector J1.
Connect a voltmeter to J1.
Press Power On Reset.
You have approximately two seconds
to read the ac voltage.
Is the voltage correct?
Yes No
015
– Check for one of the following:
If the machine is correctly wired
for the customer's input voltage.
If you have a short circuit in the
primary control box.
If the customer's supply is
defective.
016
Exchange the PS2. Go to “PS2 and
Primary Power Box Exchange Procedure”
on page 4-69.
017
– Check Fuse 1. Refer to Figure 4-37 on
page 4-32 for location.
Is the fuse OK?
Yes No
018
–Switch CB1 OFF.
– Exchange the fuse.
–Switch CB1 ON.
– If the fuse blows again, exchange the
FRU group 37.
Go to “3745 FRU Group Table” on
page 1-49.
If not, re-initiate the operation.
019
– Measure the dc voltages at 01A-A1-J3 (Location
: 01b, refer to Figure 4-1 on page 4-3.)
VDC Vmin Vmax TestPoint
+ 5.00 + 4.75 + 5.25 pin 22
+28.00 +24.90 +29.50 pin 21
ABCDE
01A-A1-J3
01A-Y0
1
13
25 14
28 V
5 V
Are both voltages present and within toler-
ance?
Yes No
020
(Step 020 continues)
2-22 3745 Models 130 to 17A: MIP