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<DIV><SPAN class=316000615-30052003><FONT face=Arial color=#0000ff>Hi
Edson,</FONT></SPAN></DIV>
<DIV><SPAN class=316000615-30052003><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV><SPAN class=316000615-30052003><FONT face=Arial color=#0000ff>I have had
numerous M20 chassis with this issue and in all cases it required an RMA.
The issue with the fan failures is handled a bit different depending on the type
of power supply that you have (as I have been explained)</FONT></SPAN></DIV>
<DIV><SPAN class=316000615-30052003><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV><SPAN class=316000615-30052003><FONT face=Arial color=#0000ff>If you have a
DC power supply and the M20 backplane has either one of these revision numbers:
</FONT></SPAN></DIV>
<DIV><SPAN class=316000615-30052003><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV><SPAN class=316000615-30052003>
<P><FONT face=Arial color=#0000ff>Backplane REV 02 710-002334</FONT></P>
<P><FONT face=Arial color=#0000ff>Backplane REV 08 710-001517 </FONT></P>
<P><SPAN class=316000615-30052003><FONT face=Arial
color=#0000ff></FONT></SPAN> </P>
<P><SPAN class=316000615-30052003><FONT face=Arial color=#0000ff>Then it
will require that you change out the backplane of the M20 in order to
correct this issue. Luckily for me, I have only had AC. In any case,
if you have DC and you are getting the fan failure errors notifications and
you have the 2 revisions above then you need to replace the backplane and have
what is called ECO-02175 applied to it to fix it. There may be more
revisions affected so you may want to go ahead an open a case with JTAC and have
them look into it.</FONT></P></SPAN></SPAN></DIV>
<DIV><SPAN class=316000615-30052003>
<P><SPAN class=316000615-30052003><FONT face=Arial color=#0000ff>If you have AC
power supplies and you are getting the fan failures notifications then you need
to RMA the power supply. Chances are that you don't have a fan failure (if
you look at the fans they are all spinning) but my guess on this is that the
sensors are malfunctionig although I have not been told what exactly causes the
fan failure notifications. I just know that RMAing the power supplies
fixed the issue.</FONT></SPAN></SPAN></P></DIV><BR>
<P><FONT face=Arial size=4>Thanks,</FONT> </P>
<P><FONT face=Arial size=4>Mario Puras</FONT> <BR><B><FONT face=Arial
color=#ff0000 size=4>S</FONT><FONT face=Arial size=4>olu</FONT><FONT face=Arial
color=#ff0000 size=4>N</FONT></B><FONT face=Arial size=4>et Technical
Support</FONT><FONT face=Arial><BR></FONT><FONT face="Times New Roman"
size=4>Mailto: mpuras@solunet.com<U></U></FONT><U><BR></U><FONT face=Arial
size=2>Direct: (321) 309-1410 </FONT> <BR><FONT face=Arial
size=2>888.449.5766 (USA) / 888.SOLUNET (Canada) </FONT></P>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> Edson Cardoso
[mailto:ecardoso@qos.com.br]<BR><B>Sent:</B> Friday, May 30, 2003 11:08
AM<BR><B>To:</B> juniper-nsp@puck.nether.net<BR><B>Subject:</B> [j-nsp] Power
Supply problems<BR><B>Importance:</B> High<BR><BR></FONT></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Hi
all,<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I have a M20 and it’s generating
the error below in log file: <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">admin@core1-re0.poa> show
chassis alarms<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Alarm time<SPAN
style="mso-spacerun: yes">
</SPAN><SPAN class=GramE>Class<SPAN style="mso-spacerun: yes">
</SPAN>Description</SPAN><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">2003-05-25 </SPAN></FONT><st1:time
Minute="31" Hour="8"><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">08:31:05</SPAN></FONT></st1:time><FONT
face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> <SPAN
class=GramE>BRT<SPAN style="mso-spacerun: yes"> </SPAN>Major</SPAN><SPAN
style="mso-spacerun: yes"> </SPAN>Power Supply B fan
failed<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I heard that kind of error is
quite normal nowadays….. <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Is this some kind of “manufacture”
<SPAN class=GramE>problem ??</SPAN> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="mso-layout-grid-align: none"><FONT
face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">Is it possible to replace
only fans without send PS for <SPAN class=GramE>RMA
??</SPAN><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="mso-layout-grid-align: none"><FONT
face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal style="mso-layout-grid-align: none"><FONT
face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">Tnks<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="mso-layout-grid-align: none"><FONT
face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><EM><B><I><FONT face=Verdana size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Verdana; mso-no-proof: yes">Edson
R. Cardoso</SPAN></FONT></I></B></EM><SPAN
style="mso-no-proof: yes"><o:p></o:p></SPAN></P>
<P class=MsoNormal><FONT face=Verdana size=1><SPAN
style="FONT-SIZE: 7.5pt; FONT-FAMILY: Verdana; mso-no-proof: yes">Professional
& Educational Services</SPAN></FONT><SPAN
style="mso-no-proof: yes"><o:p></o:p></SPAN></P>
<P class=MsoNormal><FONT face=Verdana size=1><SPAN
style="FONT-SIZE: 7.5pt; FONT-FAMILY: Verdana; mso-no-proof: yes"><A
href="mailto:ecardoso@qos.com.br">ecardoso@qos.com.br</A></SPAN></FONT><SPAN
style="mso-no-proof: yes"><o:p></o:p></SPAN></P>
<P class=MsoNormal><FONT face=Verdana size=1><SPAN
style="FONT-SIZE: 7.5pt; FONT-FAMILY: Verdana; mso-no-proof: yes">tel 55 11
3704 0422</SPAN></FONT><SPAN style="mso-no-proof: yes"><o:p></o:p></SPAN></P>
<P class=MsoNormal><FONT face=Verdana size=1><SPAN
style="FONT-SIZE: 7.5pt; FONT-FAMILY: Verdana; mso-no-proof: yes">fax 55 11
3704 0499</SPAN></FONT><SPAN style="mso-no-proof: yes"><o:p></o:p></SPAN></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt; mso-no-proof: yes"> </SPAN><o:p></o:p></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P></DIV></BLOCKQUOTE></BODY></HTML>