Apple mac pro User Manual

Mac Pro Take Apart — Hard Drive Temperature Sensor Cable 131
Part Location 

Mac Pro Take Apart — Hard Drive Temperature Sensor Cable 13 2
Procedure
Disconnect the hard drive temperature sensor cable from the logic board.1. 
Disconnect the four connectors on the hard drive temperature sensor cable from the four 2.  
hard drive temperature sensors.  
Remove the hard drive temperature sensor cable from the enclosure.3. 
Replacement Note: The connectors on the hard drive temperature sensor cable are labeled with 
HDD1, HDD2, HDD3, and HDD4 to indicate  the connector that belongs to...

Mac Pro Take Apart — Hard Drive Temperature Sensor 13 3
Hard Drive Temperature Sensor
There are four hard drive temperature sensors, one for each hard drive. This procedure explains 
how to remove the sensor for the hard drive in drive bay 1. The procedure for removing the 
other three sensors is similar, except that the only part you need to remove before beginning the 
procedure is the hard drive directly over the sensor.
Tools
The only tools required for this procedure are a mirror and a black stick...

Mac Pro Take Apart — Hard Drive Temperature Sensor 134
Part Location
Procedure
Disconnect the sensor cable for the hard drive in bay 1 and move the cable out of the way. 1.  

Mac Pro Take Apart — Hard Drive Temperature Sensor 13 5
Using a mirror, locate the two round black nubs on the bottom of the hard drive sensor 2. 
below hard drive bay 1. 
Using a black stick or a flat-blade screwdriver, press up on the nubs and remove the sensor 3. 
from the enclosure.  

Mac Pro Take Apart — Power Cable Harness 13 6
Power Cable Harness
The power cable harness consists of the following cables:
Power supply PS1 cable• 
Power supply PS2 cable• 
Power supply PS3 cable• 
Power supply PS4 control cable• 
Front panel board power cable• 
Front panel board audio cable• 
Front panel board FireWire 800 cable• 
Tools
No tools are required for this procedure.
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and remove 
the...

Mac Pro Take Apart — Power Cable Harness 13 7
Part Location
Procedure
Disconnect the power cable harness connectors from the logic board. 1.  

Mac Pro Take Apart — Power Cable Harness 13 8
Slip the four connectors out through the opening in the media shelf, removing them one at 2. 
a time. 
Remove the power harness cable from its routing along the edge of the logic board, over the 3. 
speaker assembly, and along the bottom lip of the enclosure. 
Remove the power harness cable from the enclosure.4.  

 Service Source
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Troubleshooting
Mac Pro 

Mac Pro Troubleshooting — General Information 140
General Information
Memory
The Mac Pro computer has two memory cards with a total of 8 memory slots. On each card, the 
slots are arranged as two banks of two slots each. The computer comes with a minimum of 1 GB 
of memory, installed as a pair of 512 MB fully buffered, dual inline memory modules (FB-DIMMs) 
in two of the DIMM slots. Additional DIMMs can be installed in the open DIMM slots, as illustrated 
below.
Note: DIMMs must be installed in pairs of...