Technical information

Troubleshooting
42 G24/H24 - Developer’s Kit August 31, 2009
Troubleshooting
Table 3-1 lists problems that may occur during board operation, and describes how to resolve
them. If the problem persists, please contact your Motorola representative.
Table 3-1: Troubleshooting
Problem Indication Action
Power
Developer board does not
power up
Power LED does not light Check the power source connection.
If using an external DC power source, verify that the
supply is within the limits of 3.3 V to 4.2 V.
Verify that the board power switch (S200) is on.
Check the source jumper (P203 or P204) position.
Verify that the EVB jumper (P201) is present.
The G24/H24 does not
power up or does not
communicate
The G24/H24 on/off LED doesn’t
light or lights for a short period
Check the G24/H24 connection to the Developer
Board.
Verify that the UUT jumper (P203 or P204) is present.
Depress the G24/H24 on/off pushbutton for a longer
period.
The G24/H24 on/off LED lights up
automatically when power is applied
Contact your Motorola representative.
The G24/H24 on/off LED blinks
High current
consumption
The resetable fuse is turned on Check the polarity of the DC power inputs.
Verify that only one optional power source is con-
nected.
GSM Reception
No GSM reception
available
The G24/H24 unit searches unsuc-
cessfully for network
If using an external DC power source, verify that the
supply is within the limits of 3.3 V to 4.2 V.
Fasten the G24/H24 to the board with the supplied
screws.
Check the MMCX RF cable connection to the
G24/H24.
Fasten the RF cable connections between the EXT
ANT and INT ANT connectors.
Fasten the onboard antenna stub into its base.
SIM card
The SIM card does
not operate
The SIM LED does not illuminate Verify that the SIM card operates at 3 V.
Verify that the SIM card is inserted properly into its
tray.
Serial Communications
The USB port does not
work with the PC
The PC does not recognize
connection
Make sure USB is connected to J380 and not to J210.
Verify that G24/H24 drivers are properly installed.
The RS232 port does not
work with the PC
The PC does not communicate Check the serial cable connection to the PC.
Verify that the PC port settings comply with the
G24/H24 defaults.
Incorrect RS232 LEDs are lit Contact your Motorola representative.