Motorola GM328

3-1
Section 3
TROUBLESHOOTING CHARTS
1.0 Controlhead GM328 Troubleshooting Flow Chart
1.1 On/Off
Radio cannot be switched on via ON/OFF/Volume Knob
NO
YES
YES
NO
R0823 Pin TAB
= 5V ?
R0823 Pin TAB1
when pressed
= 5V ?
Check / Replace
Volume Pot R0823
Check / Replace
R0822 / VR0822 /
D0822
NO
YES
J0801 Pin 2
> 10V ?
Check / Replace
Q0821
Check / Replace
Q0822 / R0821
YES
NO
J0801 Pin 2
=5V ?
Check / Replace
D0821 / R0852
Press and hold
On/Off/Volume Knob