1. Assembly Drawing
Contents
1-1 Explosive view…………………………………………………………………… 1
1-2 Part list…………………………………………………………………………… 1
2. Electronic Construction
2-1 Block diagram…………………………………………………………………… 2
2-2 PCB board wiring……………………………………………………………...... 3
2-3 Power circuit diagram…………………………………………………………… 4
3. RS-232 Communication
3-1 RS-232 connector………………………………………………………………. 5
3-2 RS-232 circuit diagram……………………………………………………....... 5
3-3 Single option…………………………………………………………………….. 6
3-4 Two options……………………………………………………………………... 9
3-5 Time setting……………………………………………………………………… 10
3-6 RS-232 output format…………………………………………………………..
4. Adjustments and Settings
4-1 Model setting…………………………………………………………………...
4-2 Single point calibration………………………………………………………...
4-3 Linear calibration……………………………………………………………….
4-4 Function setting ………………………………………………………………..
4-5 Scale initialization………………………………………………………………
4-6 Set division……………………………………………………………………...
4-7 Offset value display and key test……………………………………………..
4-8 Unit switch operation…………………………………………………………..
5. Trouble Shootings
5-1 Primary checks………………………………………………………………...
5-2 Problems and solutions………………………………………………………..
5-3 Error message………………………………………………………………….
6. Parts Replacement
6-1 Main board replacement …………………………………………………….
6-2 Loadcell replacement…………………………………………………………
6-3 Rechargeable battery replacement ………………………………………...
6-4 RS-232 replacement………………………………………………………….
6-5 Keypad replacement………………………………………………………….
6-6 LCD replacement………………………………………………………………
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7. Applicable Version and Software…………………………………………… 27
0 JCL Service Manual
Service_Manual_
JCL_V1
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