KERN EOE, EOS…N, BOBP 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
Platform balances
KERN EOE/EOS…N
Version 2.1
4/2009
GB
EOE, EOS…N-SH-e-0921
GB
KERN EOE, EOS…N
Version 2.1 4/2009
Service manual
Platform balances
2 EOE, EOS…N-SH-e-0921
Table of Contents
1 Basic Information........................................................................................................3
2 Features.......................................................................................................................4
3 Error Message Indication...........................................................................................4
4 Trouble Shooting........................................................................................................5
5 Calibration Procedure................................................................................................6
6 Inspection Mode for Technical Maintenance ...........................................................7
6.1 Zero Count and Span Count Adjustment............................................................................ 8
7 Functions Setting-up Sequence................................................................................9
8 Schematic of Main Board CH-0509..........................................................................10
9 Circuit Diagram for Adapter System.......................................................................11
9.1 CH-0521 (Inside EOE Platform).......................................................................................... 11
9.2 CH-0525 (Inside EOS Platform).......................................................................................... 12
10 System Block Diagram.........................................................................................13
11 Display Format......................................................................................................14
12 Layout....................................................................................................................15
12.1 Layout of Main Board CH-0509........................................................................................ 15
12.2 Layout of CH-0521 (Inside EOE Platform)....................................................................... 16
12.3 Layout of CH-0525 (Inside EOS…N Platform) ................................................................ 17
13 Explosion Diagram................................................................................................18
EOE, EOS…N-SH-e-0921 3
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.
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.
2 Features
1. Compact Dimension: 310 x 300 x 65 mm, 505 x 505 x 65, 945 x 505 x 65 mm,
900 x 550 x 65 mm
2. Material: Stainless Steel or Lacquered Steel
3. Overload Protection on Load Cell
4. Display options: 1.0 inch LCD display with 4 3/8 digital LCD
5. Capacity/Division: 6kgx5g, 15kgx10g, 35kgx20g, 60kgx50g, 150kgx100g,
300kgx200g
6. Power: AA 1.5VX6 batteries / 9V 100mA DC adapter
7. Power saving (auto shut-off timing selectable: 120 sec / 180 sec / 240 sec /
300 sec)
8. Operating Temperature: +10°C ~ +35°C
9. Operating Humidity: 25% ~ 80%
10. Function keys (4 key): ON/OFF, HOLD, UNIT, TARE
ON/OFF Switch the balance on or off by pressing the ON/OFF key.
HOLD Place the animal on the weighing platform and press the HOLD key to start
the animal weighing function (mean value).
A triangle will start to flash on the left hand side of the display, and during
this time the balance will record several values, then calculate and display
a mean value.
By pressing the HOLD key again, the weighing machine will be reset to
standard weighing mode.
Remark: With to lively movement (strong diplay fluctuation) no mean value
can take place.
UNIT Select weight unit kg lb
TARE By pressing the TARE key the display will appear “0”.
11. Weight units: kg/lb
12. Tare (to full capacity)
13. External Calibration (see chapter 5)
14. Functions setting-up (see chapter 7)
3 Error Message Indication
A. ErrE or ErrP : EEprom Error
B. ErrL : Low zero count
C. Err : Overload & High zero count
D. : Low battery indication
If scale shows any of the above error messages, it will auto shut-off after 30
seconds.
4 EOE, EOS…N-SH-e-0921
4 Trouble Shooting
EOE, EOS…N-SH-e-0921 5
5 Calibration Procedure
START
Press and hold
UNIT key for 6
seconds
Display shows
CAL
Display shows
LoAd
Load weight
(see Note 1.)
Press UNIT key once to confirm.
Display shows calibration weight.
END
Note 1:
Capacity Calibration
Weight
6kg 5kg
15kg 10kg
35kg 20kg
60kg 40kg
150kg 100kg
300kg 200kg
6 EOE, EOS…N-SH-e-0921
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