Trouble Shooting - Hioki 3154 Instruction Manual

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9.2 Trouble shooting

If the unit is not functioning, check the following before calling
for service.
Cannot set test voltage by
key press.
Cannot use key press.
Does not perform
comparator judgment with
no delay time setting.
Comparator judgment result
is incorrect.
Measurement value is
incorrect.
Switch on 9299 does not
function properly.
Cannot use START.
RS-232C does not function
at all.
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Maintenance and Service
Problem Possible cause and solution
Voltage is selected by external I/O VOLT0 to
VOLT2. Set VOLT0 to VOLT2 signal input
voltage at all LOW or all HIGH, or
disconnect all. See 6.1.1.
Key lock is engaged. (See 5.4.)
Communication with RS-232C is occurring.
(During communication, key press cannot be
used.)
Delay time is set instead of test duration.
(See 4.3.)
Resistance range is not set at range according
to lower limit value.(See 3.2.1.)
Probe has broken lead.
Probe is not connected securely.
Probe is connected to both front and rear
measurement terminals.
Probe has broken lead.
Probe is not connected securely.
Probe is connected to both front and rear
measurement terminals.
Measurement took place immediately after
the unit was moved and exposed to
significant room temperature difference
causing possible condensation.
9299 signal lead plug is not securely
connected.
9299 is not set properly. (See 4.7.)
External I/O STOP signal is set LOW.
STOP key is kept pressed.
Cables are not connected properly.
Power is not turned ON all connected
equipment.
Communication conditions are not configured
properly.
3154 Interface is not set properly. (See 7.1.1,
7.2.)