Read Panasonic KX-NT511ARUW / KX-NT511ARUB (serv.man2) Service Manual Supplement online
KX-NT511ARUW/KX-NT511ARUB
9
1.3. TROUBLESHOOTING GUIDE
1.3.1. No Operation
1.3.1.1. Power Supply : AC Adaptor
Changed from the Original Service Manual Section 9.1.2.
Note:
Refer to waveform
(1) and (2) Waveform (P.41) .
Yes
END
No
Yes
No
Related parts: F1,L210,C229,C230,D209
Check the "DC JACK ASSY" and soldering.
Resolder or replace parts as needed.
Measure the voltage at TP:DCIN.
Is it about 5.5V?
Measure the voltage at TP5V.
Is it 5V?
Measure the voltage at TP 3.3V.
Is it 3.3V?
Yes
Related parts: R233,R241,D211,C236,C239
Related parts: IC202,R234-R239,C235,C237,
C243,C241,C245,C247,C249,
C251,C253,L211
No
No
Yes
Yes
Measure the voltage at TP 5V.
Is it 5V?
Measure the voltage at TP 3.3V.
Is it 3.3V?
Yes
No
No
Yes
Measure the voltage at TP CL±VDD1.8V.
Is it 1.8V?
Measure the voltage at TP CL±VDD1.2V.
Is it 1.2V?
Yes
Related parts: IC302,C304,C305,C344
Related parts: IC302,L307,C303
No
No
Yes
Confirm the waveform of reset signal at
TP PWR_RST.
See the communication waveform(1)*.
Measure the frequency of clock signal at
Pin 1 of X1
is it 25MHz?
See the communication waveform(2)*.
Yes
Related parts: IC301,R305,R306,C326-C328
Related parts: X1,C101,C102,R110,R111,IC302
No
No
Yes
No
Yes
Confirm the LCD display.
Is it sorking?
Related parts: RA110,L103,C129,C130,C131,
C132,C133,C134,C135,R140,
R141,R142,R143,R145,Q106,
CN2,LCD Module
*
1
Each IC302 has its own MAC address.
When replacing the PCB1, remove the former
MAC address label from the bottom of the unit
and affix the included label which indicates the
new MAC address.
Related parts: See Table-2(
P.19
) to
Table-5(
P.21
).
See 9.2 LCD Does Not Operate.(
P.22
)
Recheck the TEST POINT(ST0-ST3).
See Table-1. (
P.18
)
Is it "NOT Error (No.14)" ?
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