Read Panasonic KX-NT511PRUW / KX-NT511PRUB (serv.man2) Service Manual Supplement online
KX-NT511PRUW/KX-NT511PRUB
15
1.3.2. Ethernet Does Not Work
1.3.2.1 PHY Data Error
Changed from the Original Service Manual Section 9.5.1.
Note:
Refer to waveform
(2), (8), (9) and (10) in Waveform (P.44), (P.45).
Connect LAN cables to SwitchingHUB.
Check the soldering.
Resolder or replace parts as needed.
Measure the voltage at Pin5 and Pin22 of IC201.
Is it 3.3V?
Measure the voltage at Pin7 and Pin32 of IC201.
Is it 1.8V?
Measure the 25MOUT signal at Pin14 of IC201.
Is it 25MHz?
See the communication waveform(2).
Confirm the waveform between Pin36 and Pin37 of IC201.
See the communication waveform (7).
Yes
Yes
Related parts: L201, L308
Related parts: L202
Related parts: X1, C101, C102, R108, R110,
R111, L105, IC302
Related parts: IC302, IC201, R101, R102,
R217, R218, R223
Confirm the waveform Pin23 and Pin30 of IC201.
Confirm the waveform Pin26 and Pin29 of IC201.
See the communication waveform (8).
Yes
Related parts: R214, R220, L204, L205, IC201
See the communication waveform (9).
Yes
Related parts: IC201, RA201
Confirm the waveform from Pin17 to 20 of IC201
See the communication waveform (10).
when sending a packet.
Yes
Related parts: IC201, RA101
Yes
END
No
No
No
No
No
No
No
Recheck the TEST POINT(ST0-ST3).
See Table-1. (P.19)
Is it L2SW initialization Error (No.11)?
Check the TEST POINT(ST0-ST3).
See Table-1. (P.19)
L2SW initialization Error (No.11) ?
Yes
Related parts: IC201
No
Yes
PHY(IC401) is working.
See 9.5.2 LAN port (P.2 ) or
9.5.3 PC port. (P.2 )
No
Yes
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