B&K 1794 instruction manual No DPM Indication

( D ) NO DPM INDICATION.

NO DPM INDICATION

Is Display Completely Blank ?

N

Does Display shows only dot Indication ?

Y

Is Continuity between IC7905 &

DPM's OK ?

Y

Is Continuity between ANGD & DPM's OK ?

Y

Is DPM IC OK ?

N

Replace It.

Y	Is Continuity between
	IC7805 & DPM OK ?
	N
	Ensure proper Continuity.
N	Ensure proper Continuity.

N Ensure proper Continuity.

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.

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