Main Pcb Replacement - CAS LP-II Service Manual

14 Servicing and Parts Replacement

14.3 Main PCB Replacement

1. Follow all of the directions in section 0 first.
2. Unplug the main PCB connectors at:
A. J9, CAL Switch.
B. J10, Peel Sensor.
C. J11, Peel Emitter.
D. J13, Thermal print head.
E. J14, Stepper motor.
F. J15, Gap sensor assembly.
G. J16, Pick-up motor.
H. J17, Display (A).
I. J18, Display (B).
J. J19, Power supply (A).
K. J20, Power supply (B).
L. J21, Load cell data.
M. J22, Load cell power.
3. Remove main post and 5 screws from the main PCB.
4. Slide out old PCB
5. Insert new main PCB.
6. If the new main PCB has no EPROMs, make sure to use the EPROMs from the old main PCB after you
have determined that they are in working order.
7. The main PCB EPROMs are listed below in left-to-right order. They are to be inserted with the notch
towards the front of the scale.
These are the most current versions as of August 2006
8. Once EPROMs and accessories are replaced, reassemble scale (reverse order.)
9. Do a Memory All Clear, (see section Error! Reference source not found.)
A. U5, Scale 2.24 2220
B. U6, Display 2.22 7EOb
C. U7, UN00-LPF-0201
D. U8, UN00-LPP-04000
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