HP8116a with error E51

Anyone knows what the error means ? i know its in the extended service
errors. Unfortunately the docs in Hp website say its explained on page
10.1 and their doc ends at 9.8 ....
i had a hardcopy of the manual somwhere but can;t find it right now ..
drat !

Would be cool if i can fix it. ( i've fixed 3 or 4 of these before. )

 

Hello free_electron,

I've fixed a few of these myself - it's a well laid out unit and easy to
work on. Does this help?:

Shaper Output State
Test E51
The shaper IC U401 is not able to supply positive output when -90"
startphase and complement output mode are selected with triangle
waveform (VCO not triggered).Possible faults:
VCO (Slope) IC Al: U201
Waveform switching Al: U104
Reference voltage switching Al: U204
Amplitude DAC A2: U27, U28, U17
Refer to Chapter 10.5, Chapter 10.3 and Chapter 10.4.

 

http://www.ningbo-electric.com/power-pole-connectors.html

 

Go away, spammer.