176 Chapter 9
Front Panel/Motherboard Troubleshooting
A7 Motherboard Description
analyzer. The Motherboard has the following connector types:
• (6) Analog Card Cage Connectors (J1, J11, J31, J41, J51, J61)
• (4) Digital Card Cage Signals and voltages using PCI connectors (J4, J12, J32,
J42)
• (1)Analog Power (J2)
• (1) Mixed Power (J3)
• (2) Front Panel Connectors (J5 and J9)
• (2) Fan Connector (J6 and J7)
Figure 9-2 Motherboard Connectors
A7 Motherboard Troubleshooting
There are no troubleshooting procedures for this assembly. If the Motherboard is
suspect, it must be replaced.
Motherboard
Connector
What Plugs In? Motherboard
Connector
What Plugs In?
J1 A7, Midplane J11 A2, Digital I.F, analog signals
J2 A7, Midplane J12 A2, Digital I.F, analog signals
J3 A7, Midplane J31 Option Slot
J4 A7, Midplane J32 Option Slot
J5 A7, Midplane J41 Option Slot
J6 B2, Fan #2 J42 Option Slot
J7 B1, Fan #1 J51 A8, RF
J9 Front Panel J61 --
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