Error Sources; Notes About Fault Location; Data Transmission; Operation Panel - Novexx Solutions 64 Series Service Manual

12/08 Rev. 5.01-02

Error sources

Problem
No or damaged data
[1] Faults possibly caused by bad data transmission.
Problem
Display blank, but
background light on
or
Random frozen
display or
Random strange
characters displayed
Display dark
Button function faulty Plug connector loose
[2] Possible faults at the display.
SERVICE MANUAL

Notes about fault location

Status reports should be printed to check the mechanical and electronic
function capabilities – provided that no obvious no defects are evident.

Data transmission

Possible cause
Faulty connection
Wrong interface selected
Parameter setting incorrect Check parameters (Baud rate, parity, stop
Faulty cable assignment
Incorrect handshake
Selection
Plug on board loose
Board defect
Admissible cable length
exceeded

Operation panel

Possible cause
Operation panel does not
match the CPU board.
Operation panel was re-
placed by a new one and
connected to a CPU board
with change index below
-05 (e. g. A1159-04)
Plug connector loose
Operation panel defect
CPU board defect
Buttons defect
CPU board defect
64-xx
Solution
Check interface cable
INTERF. PARAM. > EASYPLUGINTERPR>
Check, if
Interface
is set correctly
bits, number of data bits, data synch. - only for
serial interface)
Change or replace cable pin assignment, see
topic section Service Electronics
Set parameter (only for serial interface)
Select standard character set
Check and if necessary plug in again
Check and if necessary replace board
Do not exceed cable length
Solution
Replace CPU board. Required change index:
at least -05, see
Check and if necessary plug in again
Check and if necessary replace display
Check and if necessary replace CPU board
Check and if necessary plug in again
Check and if necessary replace operation
panel
Check and if necessary replace CPU board
Fault location
Spare Parts Catalog
2