Test Mode; Rf Test Mode - Motorola GP200 Series Service Manual

4-2
3.0

Test Mode

3.1

RF Test Mode

When the radio is operating in its normal environment, the microcontroller controls the RF channel
selection, the transmitter key-up, and receiver muting. When the unit is on the bench for testing,
alignment or repair, it is removed from the normal environment and it cannot receive commands
from the system. The internal microcontroller will not therefore key the transmitter nor unmute the
receiver. This prevents the use of normal tune-up procedures. To solve the problem a special
routine, called TEST MODE or "air test," has been incorporated in the radio.
3.1.1 To enter EST MODE
Enter TEST MODE as follows:
1. Turn the radio on.
2. Within ten seconds after the self test is complete, press the side button 2, (SB2) five times in
succession.
3. After "CSQ CHXX SP25" appears in the display, the radio is on channel XX, carrier squelch
mode, 25 kHz channel spacing.
Each additional press of SB2 will scroll through to the next channel spacing and a
4.
corresponding set of tones will be sounded.
5. Pressing SB1 will scroll through and access test environments as shown in Table 4-2.
6. Pressing SB2 for 3 seconds will switch the radio to the Control Head Test mode. 'LCD TEST'
appears on the display.
7. Pressing SB1 will cause the radio to turn on all the dots of the first character. Another SB1
press will turn on all the dots of the next character and so on until the last character
(character 14).
8. Pressing SB1 at the end of the LCD test will activate the 'ICON TEST'. The next SB1 press
will turn on the first icon.
9. Pressing SB1 at the end of the Icon test will activate the Button test. Pressing any button
(except SB1) or rotating the volume knob/mode selector knob during the LCD test or Icon test
will immediately activate this test.
3.1.2 Button Test
Test the buttons as follows:
1. Press the orange button; "3/1" appears which indicates that switch 3 is in the closed
condition.
2. Release the orange button; "3/0" appears which indicates that switch 3 is in the open
condition.
3. Rotate the mode selector knob; "4/0" through "4/15" appears which indicates that knob 4 is in
mode position 1 through 15.
4. Rotate the volume control; "2/0" through "2/255" appears.
5. Press SB1, view "96/1"; release, view "96/0".
6. Press SB2, view "97/1"; release, view "97/0".
7. Press SB3, view "98/1"; release view "98/0".
8. Press PTT button, view "1/1"; release view "1/0".
PERFORMANCE TESTING