B&K Precision 1796 - Manual User Manual
Page 22

( D ) NO DPM INDICATION.
NO DPM INDICATION
Is Display Completely Blank ?
Is Continuity between
IC7805 & DPM OK ?
Does Display shows only
Ensure proper Continuity.
dot Indication ?
Is Continuity between IC7905 &
Ensure proper Continuity.
DPM's OK ?
Is Continuity between ANGD &
DPM's OK ?
Ensure proper Continuity.
Is DPM IC OK ?
Replace It.
1.
If there is no Indication at all ensure that there is proper Continuity
between +5V Wire of DPM's and IC7805. It might be possible that +5V Wire
Crimping might be loose or IC7805 might be Damaged.
2.
It DPM shows only a Dot Indication. Check whether -5V from IC 7905 is
reaching DPM's. It might be possible that -5V Wire Crimping might be loose
or IC 7905 might be Damaged.
3.
If DPM shows Dot Indication, check whether AGND ( Grey Wire ) is reaching
DPM's.
4.
If DPM shows Dot Indication, check DPM IC7107. It might be Damaged.
Y
Y
N
Y
N
N
N
Y
N
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