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2 Troubleshooting Procedures 2.16 3G Troubleshooting
Procedure 2 Antenna Connection Check
The 3G wiring diagram is shown below:
Any of the connections may be disconnected. Disassemble the computer following the steps
described in Chapter 4, Replacement Procedures, and perform the following checks:
Check 1 Make sure the 3G antenna cables are firmly connected to the 3G card.
If the 3G antenna cables are disconnected, connect them firmly and go to
Procedure 1. If the 3G card is still not functioning properly, go to Check 2.
Check2 Make sure the 3G card connected to CN2610 on the SIM/Mini PCI Express board.
If the connector is disconnected, connect it firmly and go to Procedure 1. If the 3G
card is still not functioning properly, perform Check 3.
Check3 Make sure the SIM card connected to IS2620 on the SIM/Mini PCI Express board..
If the connector is disconnected, connect it firmly and go to Procedure 1. If the 3G
card is still not functioning properly, perform Check 4.
Check4 Make sure the CN9880 on the SIM/Mini PCI Express board is firmly connected to
CN9580 on the system board, connect it firmly and go to Procedure 1. If the 3G
card is still not functioning properly, perform Procedure 3.
2-56 [CONFIDENTIAL] TECRA R10 Maintenance Manual (960-708)