2 Troubleshooting Procedures
PORTÉGÉ X30W-J, dynabook V*/VZ*/VC* Series Maintenance Manual (960-941) [CONFIDENTIAL] 2-33
2.13.2 Procedure 2 Antenna/Connector Check
The 5G/LTE module, antennas and SIM card wiring diagram is shown below:
Any of the connections may be defective. Disassemble the computer following the steps
described in Chapter 4, Replacement Procedures, and perform the following checks:
Check 1 SIM card may not be firmly inserted. Remove it once and re-insert it surely. Then
perform Procedure 1 again. If the problem still exists, perform Check 2.
Check 2 The connection of 5G/LTE antenna cables (MAIN, AUX, MIMO1, MIMO2) may
be loose or connected connector is wrong. Connect the antenna cables correctly to
the 5G/LTE module. Then perform Procedure 1 again. If the problem still exists,
perform Check 3.
Check 3 The connection between 5G/LTE module and system board may be loose. Connect
5G/LTE module surely to the system board. Then perform Procedure 1 again. If
the problem still exists, go to procedure 3.
2.13.3 Procedure 3 Replacement Check
The SIM card or SIM tray may be defective or damaged. Replace it new one.
If the problem still exists, 5G/LTE module, antenna or system board may be faulty. Refer to
Chapter 4, Replacement Procedures, for instructions on how to disassemble the computer and
then perform the following checks:
System board
5G/LTE antenna
(AUX)
5G/LTE antenna
(MAIN)
5G/LTE
module
AUX
MAIN
CN2610 (5G)
CN2600 (LTE)
IS2641 SIM card
5G antenna
(MIMO1)
5G antenna
(MIMO2)
MIMO1
MIMO2
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