Replace power adapter fuses – Welch Allyn 246 Propaq CS Vital Signs Monitor v.3.7X - User Manual User Manual
Page 87
Directions for Use
Maintenance
83
Replace power adapter fuses
If the green battery charging light is off and the ac power adapter does not provide power
to the monitor even when all connections are intact, the adapter fuses may need to be
replaced. This procedure must be performed by a qualified service person. To change
fuses:
1.
Unplug the removable power cord from the ac power source and adapter.
2.
Using a small, flat-blade screwdriver, carefully pry the fuse module away from the
adapter.
3.
Remove and replace both fuses with the correct type specified on the adapter. The
fuse module can contain spare fuses.
If the small PCB between the fuses has slipped out of place, slide it back into place in
the fuse module, and verify that the voltage setting indicated in the window on the
fuse module is correct. If the voltage setting is incorrect, simply slide the PCB out of
the fuse module, rotate it 180° and slide it back into place.
Caution Spare fuses are contained in housings next to the fuses in the fuse
module as shown in the illustration. Between the fuses is a small printed-circuit
board (PCB) that sets the power adapter to the desired ac mains voltage. When
handling the fuse module, the PCB may slide out.
Caution Make sure the voltage selector indicates the proper ac input voltage. If
you change the adapter voltage setting, you must replace all fuses to match the
appropriate type specified on the bottom of the power adapter. The only fuses
contained in the power adapter when shipped from the factory are fuses
specified for the original adapter input voltage setting.
Caution Replace each fuse only with the specified type (
Note
Replace both fuses at the same time, even if only one fuse has opened due to an
overcurrent situation. The unopened fuse may be damaged and unreliable.
Fuse
Voltage Selector
and Indicator
Spare Fuse
Fuse Module
Power
Adapter