Sangean ATS-909X Service Manual page 28

(5) Weak sensitivity in AM band
Check whether reception is normal in
MW/LW band.
YES
Check the antenna circuit and antenna
switch (D1, Q1, JK1, L3 and L1).
(6) Charge does not work
Check whether the pin 8 voltage of IC9
exceeds 5V.
YES
Check whether the all batteries have
located into battery compartment well.
YES
Check whether IC10 charge circuit is
normal.
NO
Check the front end Amp Q15~Q19.
NORMAL
Check whether both the VCO and 2'nd
OSC are normal.
Check whether AGC circuit is normal.
(Q3 ~ Q5, D23 and Q24.)
Check the circuit of 2'nd if stage
(450KHz) (Q13, Q22, Q23 and T6.)
NO
Check the circuit of Q50 ~ Q52.
NO
Check batter wire.
NO
Check the D11 and R267.
2 8
YES
YES