6809471A67-O August 20, 2003 41
Level 1 and 2 Service Manual Troubleshooting
Troubleshooting
Manual Test Mode
The Motorola Product Family A28 telephone is equipped with a manual test mode
capability. This capability allows service personnel to take control of the unit and
make the unit perform desired functions by entering certain keypad commands.
To enter the manual test command mode, a GSM / DCS test SIM must be used.
1. Press , to turn the phone OFF.
2. Remove the battery cover and battery as described in the procedures.
3. Remove the customer’s SIM card from the phone as described in the proce-
dures.
4. Insert the test SIM into the SIM slot.
5. Replace the battery and battery cover as described in the procedures.
6. Press , to turn the phone ON.
Press and hold the # button for approximately 3 seconds until TEST displays on the
screen. The phone may now be issued test commands listed in Table
4.
Manual Test Mode Commands
Table 4. Test Commands
Test Command Test Function/Name
Press and hold # for 2 seconds Enter manual test mode
01# Exit manual test mode
07x# Mute RX audio path
08# Unmute RX audio path
09# Mute TX audio path
10# Unmute TX audio path
15x# Generate tone
1590# Vibrate Mode
1591# Ringer Mode
16# Mute tone generator
19# Display software version number of Call Processor
20# Display software version number of Modem
36# Initiate acoustic loopback
360# Full Rate
361# Enhanced Full Rate
362# Half Rate
37# Stop test
38# Activate Mini SIM
39# Deactivate Mini SIM
43x# Change audio path
47x# Set audio volume
51# Enable sidetone
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