¿ªÔÆÌåÓý

  1. HP-Agilent-Keysight-Equipment
  2. Topics

8112A error code E11

 

This pulse generator *was* working, but the NiCd battery was dead, so I
removed it. After repairing the track damage on the CPU board I powered it
back on, to find it was displaying E11.

Odd, since I went nowhere near the main board.

Has anyone hit E11 on these before? If so any hints and tips would be
welcome.

Thanks
Dave
 

I have noticed that the damage done by nicads in
electronic gear often goes far beyond the location
of the nicad. For instance, on the 8350B, the
nicad pack is screwed to the frame on the side
of the plugin slot. The nicad damage destroys
the battery pack and its socket, of course, but
it also causes corrosion on the circuitry in the
plugin, and on the main frame's motherboard, and
the HPIB board.

I suspect that your failed nicad did similar
damage in your 8112A. When you removed or moved
connectors, you broke what little connection they
had, and the corrosion prevents reconnection.

-Chuck Harris

'David C. Partridge' david.partridge@... [hp_agilent_equipment] wrote:

This pulse generator *was* working, but the NiCd battery was dead, so I
removed it. After repairing the track damage on the CPU board I powered it
back on, to find it was displaying E11.

Odd, since I went nowhere near the main board.

Has anyone hit E11 on these before? If so any hints and tips would be
welcome.

Thanks
Dave



------------------------------------
Posted by: "David C. Partridge" <david.partridge@...>
------------------------------------


------------------------------------

Yahoo Groups Links
 

So I opened it up to take a look with the CPU and control board propped up
at the sides, powered it on and the error was gone!!

Looks like a connector not making properly? Anyway I re-seated all the
connectors and closed it up and it still works!

Oh well, you do get the odd easy one.

Dave

-----Original Message-----
From: hp_agilent_equipment@...
[mailto:hp_agilent_equipment@...]
Sent: 17 July 2017 12:07
To: hp_agilent_equipment@...
Subject: [hp_agilent_equipment] 8112A error code E11

This pulse generator *was* working, but the NiCd battery was dead, so I
removed it. After repairing the track damage on the CPU board I powered it
back on, to find it was displaying E11.

Odd, since I went nowhere near the main board.

Has anyone hit E11 on these before? If so any hints and tips would be
welcome.

Thanks
Dave



------------------------------------
Posted by: "David C. Partridge" <david.partridge@...>
------------------------------------


------------------------------------

Yahoo Groups Links
Adrian Nicol
 

Hi,
I had a couple of intermittent faults on mine (E14 & 35) which could never be induced to appear when the top two PCBs were 'unfolded' to their service position.
One was tracked down to one of the ribbon cables that, when the PCBs were folded down and the ribbon was tucked under the board had damaged insulation which looked it was caused by the ends of its own PCB connector tails on the underside of the board. Clipping the tails and a bit of Kapton tape fixed that. The other took an age to find and turned out to be one of the big plug-in ICs with heatsinks (U302?) on the bottom board had one of its legs curled under itself rather than plugged into the socket and thus contact was intermittent depending what was pressing on it - or not!

The moral of the story was just the act of opening the thing up (and closing it) could induce faults (and clear them!) it doesn't have to be anything to do with the bit you worked on!

Good luck!
Adrian


On Monday, July 17, 2017 12:07 PM, "'David C. Partridge' david.partridge@... [hp_agilent_equipment]" wrote:


?
This pulse generator *was* working, but the NiCd battery was dead, so I
removed it. After repairing the track damage on the CPU board I powered it
back on, to find it was displaying E11.

Odd, since I went nowhere near the main board.

Has anyone hit E11 on these before? If so any hints and tips would be
welcome.

Thanks
Dave

1 - 4 of 4