HP 3000 III Series Manual page 368

System Installation
Before performing the installation instructions contained in
paragraphs 11-2 through 11-4, mechanically join the equipment
bays in accordance with the instructions contained in the HP 3000
Computer System Installation Manual, part no. 30000-90081. Then,
looking at the equipment bays from the rear, note that the Power
Control Module (PCM) is at the bottom of Bay No.1, the Power
Control Uni t (PCU) is at the bottom of Bay
&:>.
2, and that a Pow-
er Distribution Unit (POD) is in each equipment bay except for
Bay No.1. (Refer to figures 1-2 and 1-3.) I t should be noted
that special order systems may consist of more than three equip-
ment bays.
11-2. Power Distribution Unit
Perform the following instructions for each PDU in the system.
a. Ensure that no system ac power cables are connected to any ac
power source and that the MAIN SYSTEM POWER circuit breaker
on the PCM, the EXTENDED SYSTEM POWER circuit breaker on the
PCU, and all ac power switches on power supplies are OFF.
b. Remove the access plate from each PDU.
c. Connect or check straps (0360-1571) between TBI terminals in
each PCU according to the cabinet in which the PCU is located
as listed in table 11-1 and shown in figure 11-1. The PDU
must be connected to the proper phase according to where the
cabinet is located in the system.
d. Connect the five-wire harnessed cable between the PCM in the
CPU Bay (Bay No.1) and the PDU in the I/O Bay, according to
table 11-2.
e. Connect PDU'5 in adjacent bays (if any) through the fi ve-w ire
harnessed cable(s) furnished, to join TBI terminals 1 to 1, 3
to 3, 5 to 5, 12 to 12, and Earth Bus Bar to Earth Bus Bar.
(See figure 11-1.)
f. Check the ac power service strip connections and phase
strapping to TBI of the PDU in the I/O bay as shown in figure
11-1 and tables 11-1 and 11-3. Check the ac power service
strips in the other bays (if applicable) in the same manner.
g. Leave the access plates for each PDU off and proceed to para-
graph 11-3.
11-2