Service Manual

System Overview 1-11
Figure 1-7. Power-Supply Paralleling Board
.
Table 1-2. Power Cable Connections From the PSPB
Connector Cable Connection
PS1_PB1 and
PS1_PB2
To the power connector on the first power supply
PS2_PB1 and
PS2_PB2
To the power connector on the second power
supply
PS3_PB1 and
PS3_PB2
To the power connector on the third power
supply
PWR1 To POWER1 connector on system board
PWR2 To POWER2 connector on system board
PWR3 To POWER3 connector on system board
FD To diskette drives and other devices in external
drive bays
HD_B/P To POWER connector on SCSI backplane board
system-board power
cable connector
(PWR2)
system-board power
cable connector
(PWR1)
system-board power
cable connector
(PWR3)
SCSI backplane-board
power cable connector
(HD_B/P)
external-drives power
cable connector (FD)
cable connectors –
power supply #1
PS1_PB1 (top) and
PS1_PB2
cable connectors –
power supply #2
PS2_PB1 (top) and
PS2_PB2
cable connectors –
power supply #3
PS3_PB1 (top) and
PS3_PB2