B-320-2-E
37
11. TROUBLESHOOTING
NOTE: If troubleshooting below does not work at all, seek our service.
SYMPTOM
POSSIBLE CAUSE
CHECKOUT AND COUNTERMEASURE
Ref. page
1. Display is dead.
Battery pack is not in place.
Remove register front cover to see if the battery pack is
in place.
30
36
A weak battery.
Check voltage across test pin IN on the display board
of internal assembly and terminal G of the housing.
(1) Correct level: 2.6V or higher
(2) Low level: 2.5V or lower
(1) indicates a fault suspected in the internal
assembly.
(2) requires battery pack replacement.
29
2. Cannot establish
a batch setpoint.
Not switched in the batch setup
mode. (LCD display does not
blink showing the setup mode.)
Press
RESET
▲
button once and then hold the
STOP
ROT.
button depressed for more than 3 sec. If pressing
RESET
▲
button followed by
STOP
ROT.
button depression
fails to switch to the setup mode, repeat the same
procedure with internal buttons on the internal assembly.
If this proves to be successful, a fault is suspected in the
external buttons or in the internal assembly.
20
A desired batch setpoint is
shown, but the
STOP
ROT.
button
has not been pressed to set it.
Following your choice of setpoint, don't forget to press
STOP
ROT.
button to set it. (A pause for next operation longer
than 10 sec. in the course of setting will result in returning
to the previous setting automatically.)
20
Can set a batch setpoint but,
upon
STOP
ROT.
button depression,
the display reading return to "0".
If in the ADD mode, the display, following a batch
setting, shows it for 2 sec. approx. and then "0" in the
standby mode.
20
Can not set a desired batch set
point.
If adjusting a figure or carrying a number to the next
column with external buttons is disabled, repeat the same
procedure with internal buttons on the internal assembly.
If this proves to be successful, a fault is suspected in the
external buttons or in the internal assembly.
20
3. Cannot set
parameters.
Not switched in the setup mode.
Open up the register front cover and make sure that
SET
⇔
RUN of SW1-2 in the internal assembly is in
SET
and press
RESET
▲
button once.
22
Cannot set up parameters.
Failure to set up parameters with internal buttons
indicates a fault suspected in the internal assembly.
22
23
4. Shutoff valve
fails to respond
to
START
▲
button
depression.
START
▲
button is not pressed in as
far as it will go.
If pressing
START
▲
button as far as it will go does not
work, repeat the same procedure with the internal
buttons. If this proves to be successful, a fault is
suspected in the external buttons or in the internal
assembly.
16
⇨
Continued on next page.
