4210 Flow Meter
Section 5 Maintenance and Service
5-11
5.4.2 Display Warnings The LCD will show various warnings and error messages to warn
of problems in the program, or difficulties inside the flow meter.
Some messages request routine maintenance; others point out
programming errors; still others indicate serious internal diffi-
culties. Following are typical warning messages displayed on the
LCD:
CHECK PRINTER FUSE
PRINTER JAMMED
PAPER OUT
5.4.3 System Reset If the flow meter does not appear to be operating normally, you
can try to restart the processor by turning the unit off, waiting a
few minutes, and then turning the unit back on. If that doesn’t
work, you can (software) reset the system by pressing both the 4
and Exit Program keys at the same time while the unit is pow-
ering up. Pressing 4 and Exit Program only works when the unit
is powering up; it has no effect when the unit is running.
Note
Pressing 4 and Exit Program when powering up will cause
most programmed entries to be lost. Accumulated data stored
in the 4210 will also be lost. The flow meter will revert to the
program originally entered at the factory. If this operation is
performed, it will be necessary to reprogram the unit to user
specifications.
Pressing 4 and Exit Program may leave some values pro-
grammed into the flow meter's computer. If you want to remove
all programmed entries, press 1 and Clear Entry when the
flow meter is powering up.
The following messages describe serious internal problems, indi-
cating service is required:
ROM CHECKSUM ERROR - or -
FOUND BAD RAM - CALL CUSTOMER SERVICE
If these messages appear, call the Isco Technical Repair
Department for instructions at (800) 775-2965 or (402) 464-0231.
CAUTION
Do not attempt to disassemble or repair the 4210 Flow Meter
(other than changing fuses) unless you are skilled in the evalu-
ation and repair of microprocessor-based circuitry. Isco recom-
mends no attempt be made to disassemble or repair the
printer mechanism or display module.
5.4.4 If Serious Problems
Occur
If you suspect an electronic problem, Isco strongly recommends
that you call the Isco Technical Repair Department - (800)
775-2965 or (402) 464-0231 outside the U.S.A., Canada, and
Mexico. The service department will advise you on how to return
the 4210 to the factory for servicing. Due to the complex nature
of microprocessor-based circuitry, specialized knowledge and
To Next Page
Loading...
