natus OLYMPIC SMART SCALE 50, Инструкция по эксплуатации

Страница: 43 / 64

OLYMPIC SMART SCALE Model 50/51 Instruction Manual 6-11
Repair Procedures
Replacing the Power Supply 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
To replace the power supply 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).
3
Remove the power supply PCB:
a
Disconnect all connectors from the power supply PCB.
b
Loosen and remove the mounting screws, then remove the power
supply PCB.
4
Place the new power supply PCB into position, place and tighten the mounting
screws, then connect the connectors to the power supply PCB.
5
Reassemble and calibrate the scale (see page 6-4, then page 4-3).
Testing the Display Printed Circuit Board
To test the display PCB:
1
If the scale is disassembled, reassemble the scale (page 6-4).
2
Press and hold
KG/LB
while pressing
ON/OFF
.
3
Verify that all lights illuminate.
4
Press
ON/OFF
to turn off the scale.
NOTE
#
„
Schematics, wiring diagrams, and PCB drawings are located on pages A-1–A-9.
„
If appropriate, test the power supply PCB to determine if replacement is required (see
page 6-10).
NOTE
#
„
Schematics, wiring diagrams, and PCB drawings are located on pages A-1–A-9.
„
Before testing the PCB, check all fuses and connectors.
NOTE
#
The charging signal only illuminates when the scale is plugged into a functioning
electrical outlet.