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Diagnostic Indicator My Optiplex 330 express symptoms that resemble a pre-POST failure. Which of these diagnostic indicators would confirm or disprove a pre-POST failure? Beep codes, error messages, power LED status, and diagnostic LED status Thanks

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Beep codes and power LED status are pre-post errors. Usually beep codes indicate a problem with a memory module. Power LED is solid green for normal operation. Solid or blinking Amber color power LED indicates a power distribution problem.




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Posted on Nov 13, 2008

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Chamberlain whisper drive residential door opener model LW3500 stops after perhaps 2 seconds, lights flash and door will not open or close


Page 36 owners manual.

35
Operation
Diagnostic Chart
Your garage door opener is programmed with
self-diagnostic capabilities. The "Learn"
button/diagnostic LED will flash a number of times
then pause signifying it has found a potential issue.
Consult Diagnostic Chart below.
Installed
Safety Reversing
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"Learn"
Button
Safety Reversing
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Bell Wire
Diagnostics Located
on Motor Unit
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Diagnostic
LED
1 Flash
Safetyreversing
sensorswire open
(broken or
disconnected).
OR
2 Flashes
Safetyreversing
sensorswire shorted
or black/white wire
reversed.
Symptom:
One orbothof the Indicatorlights onthe safety
reversingsensors donot glow steady.
l
Inspectsensor wiresfor a short(staple in wire),correctwiring
polarity(black/white wiresreversed),broken or disconnected
wires,replace/attach asneeded.
l
Disconnectall wiresfrombackofmotor unit.
l
Remove sensorsfrombracketsand shorten sensor wiresto
1-2 ft.(30-60 cm) frombackeach ofsensor.
l
Reattach sending eye to motor unitusing shortened wires.If
sending eye indicator lightglowssteadily,attach the receiving
eye.
l
Align sensors,ifthe indicator lightsglowreplace the wiresfor
the sensors.Ifthe sensor indicator lightsdo notlight,replace
the safetyreversing sensors.
3 Flashes
Door control or wire
shorted.
Symptom:
LEDis not lit ondoorcontrol.
l
Inspectdoor control/wiresfor a short(staple in wire),replace
asneeded.
l
Disconnectwiresatdoor control,touch wirestogether.If
motor unitactivates,replace door control.
l
Ifmotor unitdoesnotactivate,disconnectdoor control wires
frommotor unit.Momentarilyshortacrossred and white
terminalswith jumper wire.Ifmotor unitactivates,replace
door control wires.
4 Flashes
Safetyreversing
sensorsslightly
misaligned (dimor
flashing LED).
Symptom:
Sendingindicatorlight glows steadily,receiving
indicatorlight is dim orflashing.
l
Realign receiving eye sensor,clean lensand secure
brackets.
l
Verifydoor trackisfirmlysecured to wall and doesnotmove.
5 Flashes
Motor overheated or
possible RPMsensor
failure.Unplug to
reset.
Symptom:
Motorhas overheated; the motorunit does not
operate ortrolley is stuck onstopbolt =Motorunit hums briefly;
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l
Unplug unitto reset.Tryto operate motor unit,check
diagnosticcode.
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Ifitisstill flashing 5 timesand motor unitmoves6-8"(15-20
cm),replace RPMsensor.
l
Ifmotor unitdoesn'toperate,motor unitisoverheated.Wait
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Motor CircuitFailure.
Replace Receiver
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Symptom:
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Replace logicboard because motor rarelyfails. https://www.chamberlain.com/CatalogResourcesV3/en-us/shared/files/tucmanuals/114A4252.pdf

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Dell Optiplex 330,won't boot memory parity error, tried new bios battery, new ram stick, still won't boot,actually had two at same time the other I ran a advanced diagnostic test said hard driv


I found this

Customer's Optiplex 330 did the same thing today; no beep codes (due to lack of on board speaker). Solid/orange light on front of case indicates board or cpu. I isolated every component not soldered down (RAM, HDD, Optical, etc). Considering all the fans and lights on the MoBo were functioning, and no physical damage to the CPU was apparent, and the BSOD presented the "memory parity error; system halted" (meaning it's memory, graphics memory, or cpu and we've eliminated possibly CPU and RAM) my conclusion is that the problem resides in Graphics memory failure. Considering the error message is very vague and generally insists "motherboard", the gpu in an optiplex 330 is integrated ON the board, lumping it all together.

and general memory parity fail information

memory parity error fix Google Search

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If you are getting no video at all, then we can use the diagnostic LEDs and the power LED to help determine the failure.
http://www.fixya.com/support/r4282412-find_no_post_diagnostic_information_dell
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1 Answer

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http://www.nullamatix.com/dell-diagnostic-beep-code-troublshooting-chart/

Six beeps might indicate a simple CMOS failure caused by a bad battery, which is easy to replace.

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