natus OLYMPIC SMART SCALE 50, Инструкция по эксплуатации

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OLYMPIC SMART SCALE Model 50/51 Instruction Manual 6-9
Repair Procedures
„
If so, test the display PCB ribbon cable; replace if damaged.
7
Continue testing internal components, or reassemble and calibrate the scale (see
page 6-4, then page 4-3).
Testing the Ribbon Cables
If the scale is not operating correctly test the ribbon cables, which are connected to
the printed circuit boards, for continuity, open shorts, and mis-wires.
Required Items:
„
ESD protection
To test the PCB ribbon cables:
1
If the scale is on, press
ON/OFF
to turn off the scale, then unplug the
power cord.
2
Disassemble the scale (see page 6-2).
3
Remove the cable and check each wire for continuity.
4
Replace any damaged PCB ribbon cables.
5
Continue testing internal components, or reassemble and calibrate the scale (see
page 6-4, then page 4-3).
Testing the Main Printed Circuit Board
If the scale lights do not illuminate or appears to be malfunctioning, a PCB may
be damaged. Test the PCB to confirm that it is damaged prior to replacing.
Required Items:
„
ESD protection
„
Voltmeter
To test the main PCB:
1
If the scale is on, press
ON/OFF
to turn off the scale, then unplug the
power cord.
2
Disassemble the scale (see page 6-2).
NOTE
#
„
Schematics, wiring diagrams, and PCB drawings are located on pages A-1–A-9.
„
Before testing the PCB, check all fuses and connectors.