PASCO ME-9215B Photogate Timer - Manual (Page 43)

012-06379B Photogate Timer
39 ®
Battery Replacement
The batteries probably need replacing when:
c
The timer counts when there is no object interrupting
the beam,
d
The LCD display loses contrast, or
e
The LCD display appears sluggish when switching
from one number to another,
To Replace the Batteries:
c
Remove the two screws on the bottom of the timer and
lift out the bottom panel.
d
Remove the thumb screw which holds the battery re-
tainer plate, then lift out the retainer plate and the bat-
teries.
e
Replace with four new “C” size, 1.5 VDC batteries.
Be sure the polarity is as shown on inside of the case.
f
Replace the battery retainer plate and the bottom panel.
➤ CAUTION: Do not store the timer with the
batteries installed. The batteries may leak and dam-
age the timer electronics.
Maintenance
+ +
– –
Insert 4 "C" size batteries with the polarity as shown.
Inside the Timer with the bottom panel removed.
+
–
Figure 5: Battery Replacement