Service Manual
Page 27 of 50
n
Replace the RS232 cable.
n
Check printer functionality by trying to print a printer system status report. (See documentation
printer)
n
Replace the main board
Print white paper
1. Check the harness, ensuring it is secure.
2. Replace the printer.
3. If it is still inoperative, replace mainboard.
Can’t communicate via
RS232 or USB with POS system
1. Check the scale version. Only Aviator 7000 has this function.
2. Check Operational Setup parameters
n
Communication port STEP 15 must be set to RS232 or USB depending on the connection strategy.
Make sure that the setting matches with the connector cable used to build the connection between
scale & POS
n
Communication type STEP 16 should be set to Protocol
n
Verify whether the same communication protocol is selected on scale & POS (STEP 20 allows the
selection of the protocol)
n
Verify if POS & printer are using recommended stop bits & communication speed, Verify whether stop
bits & communication speed are the same on Pos & Scale (STEP 18,19)
Weighing result not stable
1. Check load cell harness.
2. Check whether there is something touching the load cell.
3. Replace the AD board or load cell.
4.3. Error Shooting
Error messages indicate serious hardware malfunctions. The error table below lists error codes & their
problem solutions.
Error
Reason
Solution
E11
RAM error
Call Ohaus service
E16
ROM error
E18
EEPROM error
No PLU
PLU not found
Program PLU
nnnnnn in weight display
Over capacity
Remove weight from Platter
uuuuuu in weight display
Negative weight
Re-zero the scale
