Salter Brecknell CS-250 - Manual (Page 20)

CS-250 Series Chair Scales Service Manual
- 19 -
Cleaning

Disconnect the power before cleaning.

Use a cloth with mild suds and light cleaning agents.

Make sure that fluid not able to get into the device.

Use a clean and soft cloth for rub off.
11.2. Error Codes
Error Code
Description POSSIBLE CAUSES
Err 4
Zero range exceeded, due
to turning on or by pressing

Goods on the platform

Overload, when
zeroing the scale.

Improper calibration

Load cell problem

PCB problem
Err 6
A/D Count out of the range

Platform not installed

Load cell problem

PCB problem
Err 19
Auto zero out of limit

Remove the goods
from the chair and turn
on again.
11.3. Determine the Problem
Determine whether the problem is in the PCB or the Load Cell

Remove power from the system, and disconnect the load cell connection
from the PCB

Connect the PCB to a load cell simulator

Reapply power and test the PCB

If problem goes away, its source is probably in the Load cell. Check the
wiring, connecter, load cell and mechanical components of the load cell.
If problem persists, its source is probably in the PCB. Check the PCB voltages,
connecters, cables and function programs
11.4. Testing Load cell
For testing load cell, remove power from the system, and disconnect the PCB
from the Load cell
Physical Test:

Check the moisture, or foreign material inside.

Check load cell surface badly rusted or corroded