Digi SM-100 Service Manual

SM100 ADJUSTMENT
38
5.3 VOLTAGE CHECKPOINT
There are several voltage checkpoints on the PCB boards. Below are some reference voltage points that are
commonly use.
VOLTAGE POINT VOLTAGE PURPOSE
V
CC
3.3 V Provide voltage for most of the IC
V
TH
24 V Provide voltage mainly to the thermal head
V
BB
3 V Provide backup voltage for the RAM IC
HVcc 5 V
The tolerance of all the voltage is about ± 5% except V
TH
is +2% and -5%
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Digi SM-100 Specifications

General

Capacity	15 kg
Weighing Units	kg, g
Display	LCD
Auto Power Off	Yes
Overload Protection	Yes
Interface	RS-232
Power Source	Rechargeable battery