KERN CXB-SH-e-0913 Service Manual
KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: info@kern-sohn.com
Tel: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Service manual
Counting scales
KERN CXB
Version 1.3
4/2009
GB
CXB-SH-e-0913
GB
KERN CXB
Version 1.3 4/2009
Service manual
Counting scales
Table of Contents
1 Basic information _______________________________________________ 3
2 Introduction____________________________________________________ 4
3 General Information _____________________________________________ 4
4 Error messages_________________________________________________ 5
5 Explanation of display ___________________________________________ 6
5.1 Symbol indicator _________________________________________________ 7
6 Explanation of keyboard _________________________________________ 8
7 External calibration______________________________________________ 9
7.1 Calibration of non-approval models (CXB) ____________________________ 9
7.2 Back to the original value of calibration_______________________________ 9
7.3 Calibration of approval models (CXB-M) _____________________________ 10
8 Service mode access ___________________________________________ 11
9 Linearity calibration ____________________________________________ 12
10 Spec. calibration _______________________________________________ 15
10.1 Reference values for capacity setting _______________________________ 17
11 Temperature calibration_________________________________________ 18
11.1 Indoor air (normal) temperature calibration___________________________ 18
11.2 High temperature calibration_______________________________________ 19
11.3 Low temperature calibration _______________________________________ 20
11.4 Check / Delete temperature calibration data __________________________ 20
12 Spare parts ___________________________________________________ 21
2 CXB-SH-e-0913
1 Basic information
Grundlegende Hinweise
The device must be repaired only by trained specialist staff or personnel with
professional formation (such as a repair-specialist accredited by law
concerning verification).
The service manual is obligatory for repair work.
After repair, original conditions of the device have to be restored.
Only original spare parts should be used.
Instructions about conformity-evaluated scales:
Repair must be carried only at 100% compliance with the type approval.
A violation of this specification will result in a loss of the type approval!
After successful repair the balance will have to be reverified before it can be
used again in a statutorily regulated field.
Das Gerät darf nur von geschultem oder beruflich ausgebildetem
Fachpersonal (z. B. eichrechtlich anerkannter Instandsetzer) repariert werden.
Die Serviceanleitung ist bindend für Reparaturen.
Das Gerät muss nach erfolgter Reparatur wieder in den Originalzustand
zurückversetzt werden.
Es dürfen nur Originalersatzteile verwendet werden.
Hinweis zu konformitätsbewerteten Waagen:
Reparatur darf nur in 100% -iger Übereinstimmung mit der
Bauartzulassung erfolgen. Ein Verstoß gegen diese Vorgabe führt zum Erlöschen
der Bauartzulassung!
Nach erfolgreicher Reparatur muss eine Nacheichung erfolgen, um die Waage
wieder im gesetzlich geregelten Bereich verwenden zu können.
CXB-SH-e-0913 3
2 Introduction
1. There are 3 ways to rectify the linearity for setting the temperature calibration,
which can make the scale more accurate.
n Inside air temperature (normal temperature)
o High temperature
p Low temperature
♦ It is adequate to only do the inside air temperature calibration. Upon the
customer’s request, we also offer the high temperature and low temperature
calibration as well.
2. Sampling speed is also depended on the user’s need (01~05).
3. Linearity calibration, capacity setting and temperature calibration can be set
separately.
4. Weighing unit: g or kg (depending on model)
5. Tare range is full range tare.
3 General Information
1. The newly manufactured scale without passing the calibration and setting process
will automatically enter the linearity calibration mode. After the linearity calibration
procedure is done, the program will automatically enter the Specification Setting
Mode.
2. Zero Range
The internal value should be in between 120,000~250,000 with the platter on
and without any load (check Æ see chapter 10 “Spec. calibration”)
3. Maximum Capacity
The internal value should be over 300,000 when the scale is fully loaded.
4. When rubbing the tetragon, the inaccuracy value should be smaller than 10
divisions.
5. Tare range is full range tare.
4 CXB-SH-e-0913
4 Error messages
Non-approval models:
E1 ⇒ ZERO over 300,000 internal value.
E2 ⇒ ZERO below 10,000 internal value.
Approval models:
E1 ⇒ ZERO over the zero position in weight calibration + 10% of full scale.
E2 ⇒ ZERO over the zero position in weight calibration - 10% of full scale.
All models:
E4 ⇒ ZERO is unstable.
E5 ⇒ Turning on machine core value is under 0.
E6 ⇒ Core value is over 250,000.
E7 ⇒ Core value is below 120,000.
- - OL - ⇒ The weighing range is exceeded.
NOTES:
• Non-approval models (CXB): After E1, E2 or E4 is displayed press
to continue.
• Approval models (CXB-M): After E1, E2 or E4 appear, set the jumper SWA1
on main board to “ADJ” position and press to return the counting
mode.
Then press
+ + at the same time followed by pressing
to access calibration (see chap. 7.3).
CXB-SH-e-0913 5
5 Explanation of display
Weight Reference weight
Loading status display Pieces
6 CXB-SH-e-0913
5.1 Symbol indicator “3”
Display weight
Here, the weight of your goods is displayed.
Overlay W indicates:
Æ0Å Zeroing display
PRE-
TARE
Tare in memory
Battery very low
Display reference weight
The reference weight of a sample is shown here. This value is either entered by user
of calculated by balance.
Overlay W indicates:
Placed number of pieces insufficient for reference calculation
Placed reference weight insufficient for reference calculation
Display quantity
Here, all the parts placed on balance are immediately displayed by number.
Overlay W indicates:
M+
Data in summation memory
Stability display
Battery charge status display
red
Battery is almost discharged
green
Battery is completely discharged
CXB-SH-e-0913 7
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