10 - 1
INP-TN4PHAV-E
10. TROUBLESHOOTING
If the unit does not function properly, check what is wrong and refer to the following table to see what
action to take.
For complicated trouble, consult with our service engineer.
State
Does not move at all
Keys do no work
The record swings over to
the 0% side or the 100%
side
The record zero/span point
is out of position
There are large errors
The data display goes to
'Over', 'Under' or 'Error'
The display goes to
'Carriage Alarm'
Points to check
(1) Is the power supply terminal connection
correct ?
(2) Is power being supplied properly ?
(3) Has the fuse blown ?
(1) Have you caused data print-out by pressing
the LIST key ?
(2) Is a parameter list, scale print-out, test
pattern, daily report list or integration list
print-out in progress ?
• "The following keys are inoperative
during data print-out and list print-out.
(See section 2)
RECORD DISPLAY SELECT
(3) Is Chart end, Carriage alarm being
displayed ?
• The SELECT key is inoperative when
the above state displays are produced.
(1) Is the input signal wiring correct ?
(2) Is the record range correct ( – , + sides) ?
(3) Has a thermocouple or resistance bulb wire
broken ? (If wire breakage occurs, there is
a burn-out display and a swing over to the
100% side.)
Do the input signals match the specification ?
(Signal source resistance, etc.)
(1) The specification of the input signal setting
pins and the input signal type specification
made using the front panel do not agree
(2) Is there supply of excessively large or
excessively small input ?
Refer to Section 6.11
Action to take
Connect correctly
Effect proper supply
Replace the fuse
Wait unit the end of print-out or press
the LIST key to stop the print-out
Eliminate the displayed state.
(Put recording paper in, Check the
carrier fault.)
Correct the wiring
Set a correct range
Replace the thermocouple or
resistance bulb.
Bring them to the proper specification.
Adjust so that they agree
Effect supply of correct input
Refer to Section 9.2 and adjust.
Always make the adjustment of Section 9.2 after replacing the recording head.