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Discussion of precise voltage measurement

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The HP 8903A Audio Analyzer

RP
Roy Phillips
Tue, Sep 18, 2012 8:24 AM

I have a faulty HP8903A. Despite the excellent Agilent manual archive, and other sources that I am aware of – I cannot find any source for the Service Manual – can anybody help ?  The unit starts up and displays all digits as with the normal “self check”, but stops dead at this stage. All voltages would appear to be normal. It has a sequence of four yellow LED’s on the Processor PCB, which are active – but what is the ‘normal’ state for these. This is not an easy unit to access without the vertical series of PCB’s without extenders – any help would be much appreciated.
Thanks
Roy

I have a faulty HP8903A. Despite the excellent Agilent manual archive, and other sources that I am aware of – I cannot find any source for the Service Manual – can anybody help ? The unit starts up and displays all digits as with the normal “self check”, but stops dead at this stage. All voltages would appear to be normal. It has a sequence of four yellow LED’s on the Processor PCB, which are active – but what is the ‘normal’ state for these. This is not an easy unit to access without the vertical series of PCB’s without extenders – any help would be much appreciated. Thanks Roy
A
Artekmedia
Tue, Sep 18, 2012 10:09 AM

Roy

You will likely have better luck asking over on the HP_Agilent_Equipment
Group.

http://tech.groups.yahoo.com/group/hp_agilent_equipment/

If you dont find a free one we have a professional quality scan for a
very modest amount

http://artekmanuals.com/manuals/hp-manuals/

Contact me direct at manuals@artekmanuals.com for samples and more
information

Dave

On 9/18/2012 3:24 AM, Roy Phillips wrote:

I have a faulty HP8903A. Despite the excellent Agilent manual archive, and other sources that I am aware of – I cannot find any source for the Service Manual – can anybody help ?  The unit starts up and displays all digits as with the normal “self check”, but stops dead at this stage. All voltages would appear to be normal. It has a sequence of four yellow LED’s on the Processor PCB, which are active – but what is the ‘normal’ state for these. This is not an easy unit to access without the vertical series of PCB’s without extenders – any help would be much appreciated.
Thanks
Roy


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--
Dave Henderson
Manuals@ArtekManuals.com
www.Artekmanuals.com
PO Box 175
Welch,MN 55089
651-269-4265

Roy You will likely have better luck asking over on the HP_Agilent_Equipment Group. http://tech.groups.yahoo.com/group/hp_agilent_equipment/ If you dont find a free one we have a professional quality scan for a very modest amount http://artekmanuals.com/manuals/hp-manuals/ Contact me direct at manuals@artekmanuals.com for samples and more information Dave On 9/18/2012 3:24 AM, Roy Phillips wrote: > I have a faulty HP8903A. Despite the excellent Agilent manual archive, and other sources that I am aware of – I cannot find any source for the Service Manual – can anybody help ? The unit starts up and displays all digits as with the normal “self check”, but stops dead at this stage. All voltages would appear to be normal. It has a sequence of four yellow LED’s on the Processor PCB, which are active – but what is the ‘normal’ state for these. This is not an easy unit to access without the vertical series of PCB’s without extenders – any help would be much appreciated. > Thanks > Roy > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > and follow the instructions there. -- Dave Henderson Manuals@ArtekManuals.com www.Artekmanuals.com PO Box 175 Welch,MN 55089 651-269-4265
W
Will
Wed, Sep 19, 2012 8:14 AM

I have a faulty HP8903A. Despite the excellent Agilent manual archive, and
other sources that I am aware of – I cannot find any source for the Service
Manual – can anybody help ?  The unit starts up and displays all digits as
with the normal “self check”, but stops dead at this stage. All voltages
would appear to be normal. It has a sequence of four yellow LED’s on the
Processor PCB, which are active – but what is the ‘normal’ state for these.
This is not an easy unit to access without the vertical series of PCB’s
without extenders – any help would be much appreciated.
Thanks
Roy


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http://www.ko4bb.com/Manuals/HP_Agilent/HP_8903A_Audio_Analyzer-Service.pdf 2012/9/18, Roy Phillips <phill.r1@btinternet.com>: > I have a faulty HP8903A. Despite the excellent Agilent manual archive, and > other sources that I am aware of – I cannot find any source for the Service > Manual – can anybody help ? The unit starts up and displays all digits as > with the normal “self check”, but stops dead at this stage. All voltages > would appear to be normal. It has a sequence of four yellow LED’s on the > Processor PCB, which are active – but what is the ‘normal’ state for these. > This is not an easy unit to access without the vertical series of PCB’s > without extenders – any help would be much appreciated. > Thanks > Roy > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > and follow the instructions there.
R
R.Phillips
Wed, Sep 19, 2012 9:17 PM

Will
I am very grateful for this help.
Many thanks to you.
Roy

-----Original Message-----
From: Will
Sent: Wednesday, September 19, 2012 9:14 AM
To: Discussion of precise voltage measurement
Subject: Re: [volt-nuts] The HP 8903A Audio Analyzer

http://www.ko4bb.com/Manuals/HP_Agilent/HP_8903A_Audio_Analyzer-Service.pdf

2012/9/18, Roy Phillips phill.r1@btinternet.com:

I have a faulty HP8903A. Despite the excellent Agilent manual archive, and
other sources that I am aware of – I cannot find any source for the
Service
Manual – can anybody help ?  The unit starts up and displays all digits as
with the normal “self check”, but stops dead at this stage. All voltages
would appear to be normal. It has a sequence of four yellow LED’s on the
Processor PCB, which are active – but what is the ‘normal’ state for
these.
This is not an easy unit to access without the vertical series of PCB’s
without extenders – any help would be much appreciated.
Thanks
Roy


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To unsubscribe, go to
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Will I am very grateful for this help. Many thanks to you. Roy -----Original Message----- From: Will Sent: Wednesday, September 19, 2012 9:14 AM To: Discussion of precise voltage measurement Subject: Re: [volt-nuts] The HP 8903A Audio Analyzer http://www.ko4bb.com/Manuals/HP_Agilent/HP_8903A_Audio_Analyzer-Service.pdf 2012/9/18, Roy Phillips <phill.r1@btinternet.com>: > I have a faulty HP8903A. Despite the excellent Agilent manual archive, and > other sources that I am aware of – I cannot find any source for the > Service > Manual – can anybody help ? The unit starts up and displays all digits as > with the normal “self check”, but stops dead at this stage. All voltages > would appear to be normal. It has a sequence of four yellow LED’s on the > Processor PCB, which are active – but what is the ‘normal’ state for > these. > This is not an easy unit to access without the vertical series of PCB’s > without extenders – any help would be much appreciated. > Thanks > Roy > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > and follow the instructions there. _______________________________________________ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.