User Guide

Mac Pro Troubleshooting — General Information 142
Cable, Connector and Signal Matrix
CABLE DESCRIPTION
Service
PN
LENGT
H
(mm)
LENGT
H (in)
MLB CONN
LOCATION
MLB
CONN
LABEL
MLB CONN
DESCRIPTION
CONNECTOR 2
DESCRIPTION
CONNECTOR 3
DESCRIPTION
CONNECTOR 4
DESCRIPTION
CONNECTOR 5
DESCRIPTION
POWER / SIGNALS CARRIED
HDD SATA
Part of 922-
7682
450 17.7 B-1 SATA
36-pin high-
density
7-pin flat to
HDD 1
7-pin flat to
HDD 2
7-pin flat to
HDD 3
7-pin flat to
HDD 4
Serial ATA signals to/from all
four HDDs and main logic board
HDD Power
Part of 922-
7682
442 17.4 A-1 HDD_PWR 8-pin (2X4)
15-pin flat to
HDD 1
15-pin flat to
HDD 2
15-pin flat to
HDD 3
15-pin flat to
HDD 4
DC power to all four HDDs from
main logic board
HDD Thermal Sensor 922-7730 610 24.0 A-2 HDD_SNS 4-pin flat (4X1)
7-pin flat to
sensor bd
underneath HDD
1
7-pin flat to
sensor bd
underneath HDD
2
7-pin flat to
sensor bd
underneath HDD
3
7-pin flat to
sensor bd
underneath HDD
4
Thermal sensor signals from
sensors in all HDD bays to main
logic board
Optical Drive Power 922-7684 559 22.0 B-1 ODD_PWR
4-pin square
(2X2)
standard 4-pin
(4x1) to upper
ODD
standard 4-pin
(4x1) to lower
ODD
DC power to both optical drives
from main logic board
Optical Drive IDE 922-7686 586 23.1 D-1 OPTICAL
40-pin standard
IDE (20X2)
Standard 40-pin
IDE for lower
ODD
Standard 40-pin
IDE for upper
ODD
IDE signals to/from all optical
drives and main logic board
Power Supply PS#1 922-7687 1170 46.1 K-6 none
Large 10-pin
(5X2)
Large 10-pin
(5x2) from PS
labeled PS#1
DC power to main logic board
from power supply
Power Supply PS#2 922-7688 605 23.8 J-1 none
Large 10-pin
(5X2)
Large 10-pin
(5x2) from PS
labeled PS#2
DC power to main logic board
From power supply
Power Supply PS#3 922-7689 370 14.6 B-1 none
Large 12-pin
(6X2)
Large 12-pin
(6x2) from PS
labeled PS#3
DC power to main logic board
From power supply
Power Supply Control PS#4 922-7685 1160 45.7 K-6 none
Medium 10-pin
(5X2)
Large 10-pin
(5x2) from PS
labeled PS#4
Power supply control signals
to/from main logic board
Front Panel Board Power 922-7690 860 33.9 K-7 FP_MISC
Medium 8-pin
(4X2)
Medium 8-pin
(4x2) on top of FP bd
Power, power LED, power
button, and control signals to
the front panel board from the
main logic board
Front Panel Board Audio 922-7692 865 34.1 J-9 FP AUDIO
Small sideways
5-pin (5X1)
Small sideways
5-pin on top of
FP bd
Audio signals to the front panel
board from the main logic
board
Front Panel Board FireWire-800 922-7691 695 27.4 K-7 FP FWB
9-pin sideways
standard FW800
9-pin sideways
standard FW800
on bottom of FP
bd
Standard FW800 9-pin to 9-pin
cable to front panel board from
main logic board
Front Panel Board USB 922-7693 150 5.9 C-2 FP_USB
Small 7-pin rt
angle (7X1)
Small 7-pin rt
angle in middle
of FP bd
USB 2.0 power and data to
front panel board from main
logic board
Intake Ambient Temperature
Sensor
922-7731 400 15.7 B-2 ODD_SNS
Small 4-pin
(4X1)
Small 7-pin on
thermal sensor
bd inside top of
ODD bay
Thermal sensor signals from
ODD bay ambient temp sensor
to main logic board