Hioki 3802-50, Instruction Manual

Page: 158 / 168

74
6.1 Troubleshooting
Before returning for repair
If problems are encountered with operation, check the appropriate items
below.
If the cause of the problem still cannot be found, try resetting the system.
This returns most of the system settings to their factory defaults.
❖
See Section 4.11 Reset (page 62)
Symptom Checks
Screen is blank
Is the battery dead?
→
Replace the battery. (75 page)
Are the battery wires damaged?
→
Contact your nearest dealer.
Screen shuts off af-
ter a few moments
Is the battery dead?
→
Replace the battery. (75 page)
Is the auto power save function being activated?
→
Check the auto power save setting. (59 page)
Cannot measure
electric current
Is the fuse blown?
→
Replace the fuse. (77 page)
Are the test leads damaged?
→
Perform a continuity check to check the test leads.
If the test leads are damaged, replace the test
leads. (25 page)
Position of function
switch and screen
display do not
match
It is possible that when the unit was opened in the
course of fuse replacement, the position of the func-
tion switch and the position of the switch on the cir-
cuit board became misaligned. Open the case of the
unit and confirm that the function switch on the case
and the indented portion of the switch on the circuit
board are both in the OFF position.
Error displayed
" Error " is displayed:
Is a test lead connected to terminal A while the func-
tion switch is set to something other than mA.A?
→
Set the function switch correctly.
Connect the test leads correctly. (45 page)
" ch Err " is displayed:
Is a voltage being input to the mA.mA terminal while
the function switch is set to something other than mA
or mA.A?
→
Check whether the wrong voltage is being input to
the mA.mA terminal.
Communication not
possible
Is there a problem with the communication settings
of the 3802-50 and the computer?
→
Power on option
Are the baud rate and parity check set correctly (49
page), and is the communication cable connected
correctly? (43 page)