Panasonic KX-TDA600BX, Service Manual

Page: 63 / 133

11.1.1.1. Local Loop Back Diagnosis
Daignose faults by transmission of the data from the EMPR to the Option Card and back using the Loop back test.
Since loopback points differ from each card, they consist of loopback tests of the following items:
Local loop back diagnosis test
Primary circuit Primary circuit loop back test
Framer IC ST path (Analog) IC Analog I/F loop back test
Framer IC (Digital) IC Digital I/F loop back test
ASIC CODEC (PITS) PITS I/F test loop back
Local HW I/F point Local HW I/F loop back test
Local TSW point Local TSW loop back test
Diagnosis result of every test points
OK loop back diagnosis OK
NG loop back diagnosis NG
11.1.1.2. DTMF Receive Test
Diagnostic test for DTMF receiver
Diagnosis result
OK DTMF receive test OK
NG DTMF receive test NG
11.1.1.3. PT Loop Back Diagnosis
Diagnostic test for PT by Loop back test
PT loop back diagnostic test channel
Cch port xx C channel Port No.xx test
Dch port xx D channel Port No. xx test
Bch port xx B channel Port No. xx test
PT loop back diagnostic test
Primary circuit Primary circuit loopback test
ASIC (PT I/F) PT I/F loopback test
Diagnosis result
OK PT loop back diagnosis OK
NG PT loop back diagnosis NG
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