Protocol Propaq 242, Инструкция по применению

Страница: 88 / 120

88 Protocol Systems, Inc.
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.
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.
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.
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.
Replace each fuse only with the specified type (see page 114).
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.
Fuse
Power
Switch
Voltage
Selector and
Indicator
Spare Fuse
Fuse Module
Power
Adapter