Items Check
Point
Procedure Check or
Replace Parts
(Q) Audio Check - 1. Link with Handset.
2. Input -45dBm/1kHz to MIC of Handset.
Measure the Level at Line I/F and distortion level.
3. Confirm that the level is -8.0 dBm ± 2dBm and that the distortion level is < 5%
at TEL Line (600Ω Load).
4. Input -20dBm/1kHz to Line I/F.
Measure the level at Receiver of Handset and distortion level
(*Receive volume set to second position from minimum).
5. Confirm that the level is -21 dBm ± 2dBm and that the distortion level is < 5%
at Receiver (Volume Middle, 150Ω Load).
IC4, CN1,SA1,
L6, L7, D3, Q4,
Q5, R23, R25,
R26, R28, R63,
R39, C41, R49,
C46, C47, R42,
R43, R44, R45,
R46, R47, R48,
C108, C109,
C40, C36, Q8,
C24, R60, R62
(R) SP-Phone
Audio Check
- 1. Press SP-PHONE button.
2. Press MUTE button.
3. Input -30Bm/1kHz to Line interface. (SP-Phone volume Maximum.)
4. Measure the output level and distortion level at base speaker.
5. Confirm that the level is -3dBm ±5dBm and that the distortion level is < 5%.
6. Press MUTE button.
7. Input -45dBm/1kHz to SP-Phone MIC. (TP1-TP2)
8. Measure the output level and distortion level at line interface.
9. Confirm that the level is -0dBm ±5dBm and that the distortion level is < 5%.
IC4, IC7, D311,
R375, C312,
C313, C314,
C315, C316,
C317, C318,
C319, R308,
R311, R312,
R314, C320,
C367, D301,
R301, R302,
R303, R304,
R305, R307,
C301, C302,
C303, C304,
C305, R306
(S) Charging Check - 1. Connect Charge Contact 12Ω/2W resistor between charge+ and charge-.
2. Measure and confirm voltage across the resistor is 2.85V ± 0.2V.
R2, R3, R4, D6,
C180, C181,
C182, D361,
Q361, Q362,
C361, C362,
R361, R362,
R363, C322,
L13, L14
(T) TAM Operation
Confirmation
- 1. TAM Confirmation (Execute the command “sendchar_VPI”)
2. Confirm the returned Value (Value is “D597EC”).
IC6, R91, R92,
C86, R33, R34
31
KX-TG1233BXS / KX-TG1233BXT / KX-TCA122CXS / KX-TCA122CXT / KX-TCA121CXS / KX-TCA121CXT
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