Motorola Mototrbo - Page 241

Troubleshooting Flow Chart for RFIC 1-7
3.2 Troubleshooting Flow Chart for RFIC (Sheet 3 of 5)
Yes
Is Radio in Receive or Transmit?
Transmit
Is Modulation present at R0012?
Receive
Is Transmit activity present
on R1006,R1007 & R1008?
Yes
1.8V at TP0005?
Yes
No
Is there activity on R1039?
Check Controller troubleshooting
document
Check for any short or open under
SH0000 and SH0001 and Replace U0000
if needed
No
No
No
No
Yes
Yes
B
Is there activity on R0051 and
R0052?
No
Yes
Check for any short or open under
SH0000 and SH0001 and Replace U0000
if needed
No
Yes
Check components R0026 and R0018 for
any short or open and replace if needed.
Check for any short or open under
SH0000 and SH0001 and Replace U0000
if needed
Is Transmit activity present
on R1006,R1007 & R1008?
Yes
No
Is there 1.8V at C0121?
Is there 5V at R0026 and R0018?
Receive
No
Yes
Check components Q0004 and R0056 for
any short or open and replace if needed.