D-1034-126̲DM508S/DM1008S/PDM508S英文
− 6 −
Before starting measurement, check the appearance
,
pointer 0
position (*), built-in battery
and measuring lead
in this order. (*The
pointer 0 position is the 0 position of the DC60V scale or
∞
position of
the M
Ω
scale.)
Check start.
Check appearance and pointer 0 position.
Main unit and
test lead damaged
in appearance?
Pointer at 0 position
when main unit is placed
horizontally?
Stop using.
Repair it.
Place main unit
h o r i zo n t a l l y,
adjust pointer
0
position adjuster
with screwdriver
to bring pointer
to 0 position.
Damaged
No damaged
No
Yes
Check built-in battery.
Turn function control knob
to DC60V/BATTERY CHECK.
Pointer is on left of battery
check scale
（
BATT
）
?
Turn function control knob
and M
Ω
switch to OFF.
Replace
battery.
See 7.4
Battery
Replacement.
Check measuring lead wiring breakage.
Connect lead with clip to EARTH terminal
and lead with test pin to LINE terminal.
Clamp test pin with clip (to short).
Turn function control knob to
AC600V
・
250V/500
Ω
M.
Turn on M
Ω
measuring switch.
Release push switch and replace test
lead with new one and re-check.
If replacement does not work, repair
Turn M
Ω
measuring switch and
function control knob to OFF.
Normal. Proceed to measurement.
Pointer is at almost 0M
Ω
position of insulation resistance
scale ?
No
Yes
No
Yes
Turn on M
Ω
switch.
5.2
How to Check Bult-in Battery (BATTERY CHECK)
Prior to M
Ω
(insulation resistance) measurement, be sure to check the
built-in battery. A consumed battery will cause not only measurement
errors but danger due to erroneous measurement.
For checking methods, refer to 5.1 Start-up Check.
Do not check the built-in battery for more than 5 seconds.
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