Like Bob said, the point between R41-D2 connects to IC5 pin 2 not pin 3.
Pin 3 is Tape Enable (inverted). IC 5 pin 2 should be about 1.1V unless the
zener D2 or resistor R41 are not connected properly or are the wrong parts
inserted.
Don B
Sent: Friday, January 2, 2015 4:42 PM
Subject: Re: [PolySix] Re: Non-working attenuator
Hey Bob, I've got thee two measurements, and they are OK. But it seems like
the point R41 - D2 doesn't reach directly IC5 (measurement show a resistance of
~5k between R41-D2 and IC5 pin 3)
The definition of the bottom layer
isn't enough to see were the pin goes. I'm waiting on the picture of
Jed.
Lucas