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9
3.2.2.
Check Link
[Changed from original section "9.1.3. Check Link"]
3.2.2.1.
Base Unit
Cross Reference:
Power Supply Circuit (P.5)
Check Point (Base Unit) (P.12)
Check Point (Base Unit) (P.12)
Note:
(*1) Refer to Troubleshooting by Symptom (Base Unit and Charger Unit) (P.12).
Check around Power Supply Circuit.
Does Base Unit make link with Handset?
(Correct working unit)
(Correct working unit)
Check around X1 and adjust clock frequency.
Refer to Check Point...(E).
Refer to Check Point...(E).
NO
NO
NO
(*1)
NO
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
Check the RF circuit in the shield case.
Is the modulation OK?
Refer to Check Point...(I).
Refer to Check Point...(I).
Is VDDB pin about 2.65V?
Is there CMD60 (: Dect Tester)?
Is the RF clock (P1.0) oscillate: 10.368MHz in
Base Unit Test Mode?
Refer to Check Point...(E).
Base Unit Test Mode?
Refer to Check Point...(E).
Is the NTP value OK?
Refer to Check Point...(H).
Refer to Check Point...(H).
Is the RSSI Level OK?
Refer to Check Point...(M).
Refer to Check Point...(M).
Does Base Unit make link with CMD60 in
Base Unit Test Mode?
Refer to Check Point...(H).
Base Unit Test Mode?
Refer to Check Point...(H).
NO
YES
Base Unit is OK. Check Handset.
NO
YES
Is the Sensitivity Receiver OK?
Refer to Check Point...(K).
Refer to Check Point...(K).
YES
Is the Timing OK?
Refer to Check Point...(L).
Refer to Check Point...(L).
YES
Is the Frequency Offset OK?
Refer to Check Point...(J).
Refer to Check Point...(J).
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