16
TROUBLESHOOTING HINTS
1. The bell does not ring.
OK
OK
NG
NG
NG
OK
NG
When the PAGE SW of
the base is pressed, does
the ringer on the handset ring?
See 2, The bell does not ring
& page does not ring.
When the TEL SG is joined
with the base to made bell
signal, does PIN 4 of BU4
change from high to low.
By using voltmeter check
BU4.
BU4 is defective.
By using voltmeter check BU2
of base.
Check TEL network primary
circuit.
BU2 is defective.
Summary of Contents for FT-3809 BK
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Page 15: ...45200001 sch 1 Thu Jan 20 16 42 22 2000 ...
Page 16: ...3809bs sch 1 Thu Jan 20 16 33 20 2000 ...
Page 31: ...ELECTRICAL PARTS LOCATION HANDSET PCB 30 ...
Page 32: ...BASE PCB 31 ...
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