Motorola ASTRO XTS 5000 - 5.10 Top;Side Button Test

November 16, 2006 6881094C31-E
5-22 Troubleshooting Charts: Top/Side Button Test
5.10 Top/Side Button Test
Verify operation of
channel knob
using Button Test
flowchart
Top/Side Button
Test
Yes
Using RSS, verify
button is enabled
for function
No
Button check
OK?
Buttons
enabled?
Using a voltmeter measure the
voltages at
the appropriate resistor as indicated
in the synopsis. When the button of
interest is in the depressed state a
near zero voltage should be seen at
the resistor. Otherwise the voltage
should be near V_2.9 For the toggle
(TG1) button the voltages for the
three states are 2.9V, 1,45 V, and 0
V.
Synopsis
This chart relates to the failures in
reading the top and side buttons.
The resistors correspond to the
following signals:
R231: TG1
R233: Monitor
R234: Secure Clear
R256: Scan
This chart is valid for NCN6186,
NTN5532A and NNTN5567 kits
Yes
Yes
No
Us RSS to enable
button
Button voltages
OK?
Replace U401
No
Verify physical
operation of
buttons
Physical
operation OK?
Replace chasis
No
Verify connections
and control top/
PTT flex circuit as
necessary
Yes