Power Supply Board Removal; Power Supply Board Replacement; Blower Removal - DeVilbiss SleepCube Gebrauchsanleitung

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17. Read the Hour Meter ("Uh<cr>")– a new PC board should
have 00000 hours. It is recommended that the original
hour meter value be restored if the original blower is used.
Set the hour meter by sending 'Uh=nnnn<cr>' where
nnnn is the hour meter reading x 10 (Ex: 100.5 hours
would be set by typing 'Uh=1005<cr>').
18. Read the Compliance Meter ("Up<cr>")– a new PC board
should have 00000 hours. Clear the Compliance meter if
it is not zero by typing 'Up=c<cr>'. The CPAP will return
000000.0 hours.
19. Check the fi rmware and hardware version information.
Read and record the following:
• BIOS rev "VB<cr>"
• Firmware rev "VF<cr>"
Check the present version of fi rmware to make sure the
board is up to date. Install new fi rmware if the board has
an old version.
20. Check for last saved error, type 'El<cr>'. The CPAP will
respond with "Exx dd/mm/yyyy" where xx is the last
saved error code and dd/mm/yyyy is the date that the
error was detected. Clear the last error by typing 'Ec<cr>',
the CPAP will return "OK." Verify that the error code is "00"
by typing 'El<cr>'.
21. Set all device settings to their default values by typing
'TD<cr>'. The CPAP should return "OK."
22. Recalibrate the unit.
E. Power Supply Board Removal
CAUTION– Failure to wear anti-static equipment during ser-
vice may damage
this device.
1. See instructions above to remove the cover and the con-
trol PC board.
2. Wearing an anti-static device and with the power supply
board facing you, apply thumb pressure to top left corner
of the board while pulling the top right corner up and out
of the mount clip at its bottom.
3. Pulling the top left corner out of its mount clip, lift the
board off the chassis.
4. If returning the power supply board to the unit, place the
board onto a clean, fl at, static-free surface with its large
components facing up OR if discarding the power supply
board, remove the two wire harnesses for use with the
replacement board or purchase a new wire harness kit.
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LT-2026
F. Power Supply Board Replacement
CAUTION– Failure to wear anti-static equipment during ser-
vice may damage
this device.
1. See instructions above to remove the cover, the control PC
board and the power supply board.
2. Wearing an anti-static device, connect the wire harnesses
from the old power supply board to the new power supply
board or use a new wire harness kit.
3. Position the chassis so that the blower faces down and the
inlet and outlet ports face you. Position the power supply
board so that the components are facing away from you
with the large brown component in the bottom left cor-
ner and the small blue component in the top right corner.
4. Place the board into the mount clips at the bottom of the
power supply board cavity and press down fi rmly on the
top corners until the board is fully mounted.
5. See instructions above to replace the control PC board and
the cover.
G. Blower Removal
CAUTION– Failure to wear anti-static equipment during ser-
vice may damage
this device.
1. See instructions above to remove the cover and control PC
board
2. Carefully remove the silicone grommet holding the blower
wire harness. (Fig. 4)
3. Holding the wire harness in your hand, turn the chassis
over so that the blower is facing up.
4. Remove the foam covering the blower and the foam
around the blower.
5. Reach into the blower cavity and push the silicone isolator off
the blower outlet. (Fig. 5)
6. Slowly lift blower out of the chassis and carefully pull the
wire harness through the hole in the chassis. If not return-
ing blower to unit, remove foam from bottom of blower
and save for new blower.