GX20
2 – 48
CONFIDENTIAL
Hands free kit (Headset)
When replacing the hands free kit, output avilable?
Hands free kit defective.
Voltage of 1 to 1.9 V applied to JK301 3 pin?
Voltage of 1 to 1.9 V applied to TP106?
Parts of L105 to JK301 3 pin defective.
Voltage of more than 2.4 V applied to Q101 3 pin?
Parts of Q101 3 pin to L105 defective.
Voltage of 3 V applied to Q101 2 pin?
Q101 defective.
IC104 defective.
Voltage of approx. 1 V applied to IC102 44 pin?
Voltage of approx. 1 V applied to IC102 40 pin?
IC102 defective.
Voltage of more than 2.4 V applied to Q101 3 pin?
Parts of R107, R108, C113 and L106 defective or soldering
defective.
Voltage of 0 V applied to C186 (IC102 6 pin side)?
IC102 defective or soldering around C186 and R184 defec-
tive.
JK301 defective or R184 defective.
YES
NO
YES
E
NO
YES
NO
YES
NO
YES
NO
G
E
YES
F
NO
YES
NO
NO
G
YES
F
YES
NO
Содержание GX20
Страница 38: ...GX20 2 32 CONFIDENTIAL Figure 64 Contact points Figure 65 Turning power on Points Push ...
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