Apple mac pro early 2009 User Manual

Mac Pro (Early 2009) General Troubleshooting — Memory Diagnostic LEDs 21 2010-09-27
Troubleshooting Memory LEDs
Follow this procedure when troubleshooting each DIMM identified by a red LED:
1. Remove and reseat DIMM.
2.  Restart computer. If associated LED is no longer illuminated, issue is resolved. 
3. If associated LED remains illuminated, replace DIMM with new DIMM.
4.  Restart computer and verify LED is no longer illuminated.
There is one exception. If two LEDs illuminate at the same time for the 3...

Mac Pro (Early 2009) General Troubleshooting — PCIe/Graphics Cards 22 2010-09-27
PCIe/Graphics Cards
The Mac Pro (Early 2009) backplane board includes one double-wide PCI Express (PCIe) 
graphics slot and three PCIe expansion slots, for a total of four slots. The computer comes with 
a graphics card installed in slot 1. You can install additional PCIe graphics and expansion cards 
in the remaining three expansion slots. 
All four slots physically support cards of up to x16 slot width. 
Slot electrical...

Mac Pro (Early 2009) General Troubleshooting — Functional Overview 23 2010-09-27
Functional Overview
Processor Board
CPU A Heatsink Fan and Ther mal Sensor* Inter mitt ent shut down
* Fr eeze s
* Noisy or fast fans
* Slo w or r educed per for manc e
CPU A* Pow er & F ans, no bo ot/video
* Fr eeze s
* K ernel panic
Nor thbr idge , Hea tsink and 
Ther mal Sensor
* Inter mitt ent shut down
* Fr eeze s or unstable sy stem
* Noisy or fast fans
* Slo w or r educed per for manc e
Back plane In ter connec t* No...

Mac Pro (Early 2009) General Troubleshooting — Functional Overview 24 2010-09-27
Backplane Board
Hard Dr ive Ther mal Sensors
(1 per dr ive)
* In ter mitt ent shut down
* Fr eeze s or unstable sy stem
* Noisy or fast fans
* Slo w or r educed perfor manc e
* Dr ive s pin-do wn
Back plane In ter connec t* No Pow er
* No bo ot
* In ter mitt ent fr eeze s
* Ker nel Panic
AirPor t* A irPor t not det ected in
  Sy stem Pr ofiler
* K ernel panic on bo ot
   or wi-fi da ta transfer
Inter nal Sp eaker* No bo ot...

Mac Pro (Early 2009) General Troubleshooting — Block Diagram 25 2010-09-27
Block Diagram
Optical D riv e
T op
P CIe G en1 2.5GT/s
1 Lane s Each D irec tion
0.3GB/s B andwidthPCIe G en1 2.5GT/s
1 Lane E ach Direc tion
0.3GB/s B andwidth
Gb E net A 1
x16 G en2 P CIe Slot
2
x16 G en2 P CIe Slot
PCIe G en2 5GT/s
1 6 Lane s Each D irec tion
1 0GB/s B andwidthPCIe G en2 5GT/s
1 6 Lane s Each D irec tion
1 0GB/s B andwidth
4
x4 G en2 P CIe Slot / R AID
PCIe G en2 5GT/s
4 Lane s Each D irec tion
2.5GB/s B...

Mac Pro (Early 2009) General Troubleshooting — Common Reset Procedures 26 2010-09-27
Common Reset Procedures
The following reset procedures are often helpful in troubleshooting Mac Pro issues.
Resetting the System Management Controller (SMC)
The System Management Controller (SMC) controls all power functions for the computer. If the 
computer is experiencing any power issue, resetting the SMC may resolve it. The SMC controls 
several functions, including:
• Telling the computer when to turn on, turn off,...

Mac Pro (Early 2009) General Troubleshooting — Common Reset Procedures 27 2010-09-27
Resetting the Parameter RAM (PRAM)
To reset PRAM:
1. If the computer is on, turn it off.
2.  Locate the following keys on the keyboard: Command, Option, P, and R. You will need to 
hold these keys down simultaneously in Step 4.
3. Turn on the computer.
4.  Press and hold the Command-Option-P-R keys. 
Important: You must press this key combination before the gray screen appears.
5. Hold the keys down until the computer...

Mac Pro (Early 2009) General Troubleshooting — Power-On Self Test: RAM and Processor Verification 28 2010-09-27
Real Time Clock (RTC) Reset
The Real Time Clock (RTC) is a chip on the backplane board that controls the date and time 
functions of the computer. If the computer is experiencing an issue booting, resetting the RTC 
may resolve it. Follow these steps to reset the RTC:
1. From the Apple menu, choose Shut Down (or if the computer is not responding, hold the 
power button until it turns off ).
2....

Mac Pro (Early 2009) General Troubleshooting — Minimum Configuration Testing 29 2010-09-27
Minimum Configuration Testing
The following procedure can help you troubleshoot a “No Power” or other startup related 
symptom.
Using this method of gradually building the system up from a bare minimum and verifying 
expected behaviors at each step is one way of determining which modules function together 
in some limited form. The goal is to identify which module(s) cause a symptom to recur when 
they are added....

Mac Pro (Early 2009) General Troubleshooting — Minimum Configuration Testing 30 2010-09-27
2. Attach a known good power cord from a known good AC source to the Mac Pro. 
Note: When connecting the Mac Pro to AC power, verify that the LEDs for OVTMP CPUA and 
OVTMP CPUB briefly flash red (less than 0.5 sec). The LEDs are located under hard drive bay 1 
on the backplane board. If they do not illuminate briefly, there is an issue with either the power 
supply or the backplane board. Generally speaking, power...