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64 Repair procedures Welch Allyn Propaq CS Vital Signs Monitor
Replacing the power input fuse
The Fuse F1 protects the Recharger Board circuitry against excessive current at the dc
input connector. You do not need to disassemble the Propaq CS monitor to replace this
fuse.
Check fuse F1 if the ac power adapter is functioning properly and the following two
conditions exist:
• the green LED charging indicator on the monitor’s right side panel does not illuminate
• the monitor battery does not charge
To remove the fuse, use a flat blade screwdriver to turn the fuse cover and release the
fuse.
Replacing the battery pack
Insert a new battery pack into the Propaq CS monitor when the current battery no longer
holds an adequate charge. Verify that the battery charges to capacity (“Battery capacity
check” on page 57).
Caution Replace the fuse only with one of the same rating and size. See “Field
Replaceable Units (FRUs)” on page 129 for Welch Allyn part numbers.
DEFIB SYNCHROMONITOR
EKG x 1000
!
3A
2AG
12-28V, 3A
!
!
F1
WARNING Although the battery pack includes a fuse to prevent against personal
and equipment damage, the sealed lead-acid battery pack is capable of quickly
delivering dangerously high currents if improperly handled, misused, or abused.
These current levels may burn skin or damage the Propaq CS monitor. Use
extreme caution when handling the battery pack.
Note
The battery fuse is not replaceable. If the battery is shorted, the entire pack
must be replaced. Do not try to service the battery fuses.