3. Operation Procedures
73
Error No.
Problem
Remedy
21
Error of HP-20A
Check the display of HP-20A.
22
The working mode of HP-20A is not
set up.
Select the working mode from the control panel of
HP-20A.
66
Error of HP-20A
Check the display of HP-20A.
70, 72
The size set up on HP-20A is not
completed.
Check the display of HP-20A.
89, 90
Communication error with HP-20A
The communication with HP-20A is
suspended.
Clear the error and perform the same operation again.
If the same error No. appears, turn off the power switch
and turn it on again.
3-4 Special Operation