User Guide

Page 10
(8). Trouble shooting
Symptoms Possible Causes Remedies
No batteries. Set the batteries.
Faulty battery polarity Install batteries in correct polarity.
Insufficient capacity of battery Replace the batteries.
Poor contact of battery contacts Replace the battery contacts.
A break in a battery harness Make a continuity test of test lead. If there
is no continuity, replace the battery harness.
The instrument cannot be
buttoned on.
Defect of circuit component Defect of PCB; when current consumption
is about 100mA or more at 6V of battery
voltage. Replace the PCB.
Insufficient capacity of battery Replace the battery if the indication is faint
or “BATT” mark is displayed on the LCD.
Poor contact of rubber contactor. Clean the tracks on PCB and LCD where
rubber contactor contacts with.
Indication error
(chip of segment,
arithmetic
point, unit and so on)
Defect of circuit component Check above points first. If there is no
problem, replace the PCB and do
re-adjustment.
Insufficient capacity of battery Replace the battery when “BATT” mark is
displayed on the LCD.
Data hold function is being run. Data hold function is being activated if “H”
mark is displayed on the LCD. Press the
“DATA HOLD” button and release it.
F.SW is in the wrong position. In case that “” isn’t displayed on the LCD
as a unit, press A/ button several times and
select the Ohm measurement function.
A break in jaw wiring Make a continuity test of jaw wiring. If
there is no continuity, replace the jaw and do
re-adjustment.
Incapable measurement of
resistance
Defect of circuit component Check above points first. If there is no
problem, replace the PCB, and do
re-adjustment.
Insufficient capacity of battery Replace the battery if “BATT” mark is
displayed on the LCD.
Data hold function is being run. Data hold function is being activated if “H”
mark is displayed on the LCD. Press the
“DATA HOLD” button and release it.
Wrong function is selected. In case that “mA A” isn’t displayed on the
LCD as a unit, press A/ button several
times and select the ACA measurement
function.
A break in jaw wiring Make a continuity test of jaw wiring. If there
is no continuity, replace the jaw and do
re-adjustment.
Incapable measurement of
current
Defect of circuit component Check above points first. If there is no
problem, replace the PCB, and do
re-adjustment.
Form number TM61920 Rev 4 July 2008