IBM RS/6000 SP, Maintenance Information

Page: 119 / 388

MAP 0210: Wide Processor Node Environment
006 (continued)
One or more of the following conditions exist:
Voltage out of range: +4 V “shutdownP4”
Voltage out of range: +5 VM “shutdownP5m”
Voltage out of range: +5 VI “shutdownP5i”
Voltage out of range: +12 V “shutdownP12”
Voltage out of range:
−
12 V “shutdownN12”
Planar power problem: +4 V, +5 VM, +5 VI, +12 V, or
−
12 V
– Place processor node in service position.
– Remove power compartment cover.
– Check cable conditions at node supervisor card N00-SV-J102 and power card N00-PC-J60. Check con-
dition of cable wires, especially J60 pin 37 to J102 pin 11, and the appropriate connection (based on
message) shown below:
Voltage Power Card - J60 Node Supervisor - J102
+4 V N00-PC-P60 pin 3 N00-SV-P102 pin 29
+5 VM N00-PC-P60 pin 1 N00-SV-P102 pin 27
+5 VI N00-PC-P60 pin 5 N00-SV-P102 pin 31
+12 V N00-PC-P60 pin 7 N00-SV-P102 pin 33
−
12 V N00-PC-P60 pin 10 N00-SV-P102 pin 35
Does the power control/sense cable appear to be okay?
Yes No
007
Problem with node supervisor control cable (N00-SV-P102).
– Go to Step 015 on page 1-101, Priority 4, to replace cable.
008
– Disconnect cable at N00-SV-J102 and N00-PC-J60.
– Based on the message, use the information in the table below to disconnect the appropriate cable and
check resistance between the cable pins.
Voltage Cable
From
(positive lead) To GND
(negative lead) Acceptable Range
(in ohms)
+4 V N00-PC-P16A Pin 4 Pin 10 6 - 25
+5 VM N00-PC-P13A Pin 4 Pin 10 1K - 5M
+5 VI N00-PC-P40A
N00-PC-P45
N00-PC-P65 Pin 10
Pin 4
Pin 4 Pin 1
Pin 3
Pin 3 10 - 30
100 - 500*
100 - 500*
+12 V N00-PC-P40A
N00-PC-P45
N00-PC-P65 Pin 6
Pin 1
Pin 1 Pin 1
Pin 2
Pin 2 800 - 100K
1K - 5K*
1K - 5K*
−
12 V N00-PC-P40A Pin 3 Pin 1 1K - 20K*
Note: *Resistance range assumes DASD(s) attached on this cable. With no DASD(s) attached, an open will be
measured.
(Step 008 continues)
Chapter 1. Maintenance Analysis Procedures (MAPs)
1-99