Motorola APX 1000 Basic Service Manual page 286

5-6
Display
CSQ
TPL
AST
USQ
5.2.3 Control Top and Keypad Test Mode
This test mode is used to verify proper operation of all radio buttons and switches if a failure is
suspected.
5.2.3.1 Control Top Checks
To perform the control top checks:
1. Press and hold the Top Button (Orange button); the radio icons are displayed, and the LED
lights amber and lightbar LED light green.
2. Release the Top Button; "148/0" appears, which indicates that the Top Button is in the
open position. Your radio is now in the Control Top and Keypad test mode.
3. Press the Top Button again; "148/1" appears, which indicates that the Top Button is in the
closed position.
4. Rotate the Volume Control; "11/0" through "11/255" appear. The display values may vary
slightly at the upper and lower limits. Press gives "91/1", release gives "91/0".
5. Press the Top Side Button; "96/1" appears; release, "96/0" appears.
6. Press Side Button 1; "97/1" appears; release, "97/0" appears.
7. Press Side Button 2; "98/1" appears; release, "98/0" appears.
8. Press the PTT Button; "1/1" appears; release, "1/0" appears.
Table 5-4. Test Environments
Description
Carrier
Squelch
Tone
Private-Line
ASTRO
Carrier
Unsquelch
***All deviation values are based on deviation tuning of this
mode.
Performance Checks: Display Radio Test Mode
Function
RX: unsquelch if carrier detected
TX: mic audio
RX: unsquelch if carrier and tone (192.8 Hz)
detected
TX: mic audio + tone (192.8 Hz)
RX: none
***
TX: Digital Voice
RX: unsquelch always
TX: mic audio