No Receiving Voice - FLY E146 Maintenance Instruction

4.11 No receiving voice

Checking method testing
the resistance of the REC
by multimeter, gearing to
the resistance, the
resistance of it is 30ohm
around
No receiving voice
D/L the latest edition,
Check whether it is OK
N
Check whether the connection
of J9401 is OK
Y
Check whether the
REC PAD is oxidized
or broken
N
Check whether the
C3313~3315 B3320 B3321
D3320 D3321 is broken
N
Change the CPU
Y
Ok
Reassemble the
N
Connector
Y
Clean or
Change the REC
Y
Change the defective
OK