Troubleshooting - Motorola G24 Developer's Manual

Troubleshooting

Troubleshooting
Table 3-1
them. If the problem persists, please contact your Motorola representative.
Problem
Power
Developer board does not
power up
The G24 does not
power up or does not
communicate
High current
consumption
GSM Reception
No GSM reception
available
SIM card
The SIM card does
not operate
Serial Communications
The USB port does not
work with the PC
The RS232 port does not
work with the PC
42
lists problems that may occur during board operation, and describes how to resolve
Table 3-1: Troubleshooting
Indication
Power LED does not light
The G24 on/off LED doesn't light or
lights for a short period
The G24 on/off LED lights up auto-
matically when power is applied
The G24 on/off LED blinks
The resetable fuse is turned on
The G24 unit searches unsuccessfully
for network
The SIM LED does not illuminate
The PC does not recognize
connection
The PC does not communicate
Incorrect RS232 LEDs are lit
Developer's Kit
Action
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.
Check the G24 connection to the Developer Board.
Verify that the UUT jumper (P203 or P204) is present.
Depress the G24 on/off pushbutton for a longer period.
Contact your Motorola representative.
Check the polarity of the DC power inputs.
Verify that only one optional power source is con-
nected.
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 to the board with the supplied screws.
Check the MMCX RF cable connection to the G24.
Fasten the RF cable connections between the EXT
ANT and INT ANT connectors.
Fasten the onboard antenna stub into its base.
Verify that the SIM card operates at 3 V.
Verify that the SIM card is inserted properly into its
tray.
Check the SIM switch (S140) setting.
Make sure USB is connected to J380 and not to J210.
Verify that G24 drivers are properly installed.
Check the serial cable connection to the PC.
Verify that the PC port settings comply with the G24
defaults.
Contact your Motorola representative.
April 1, 2006