Control Pc Board Replacement - DeVilbiss SleepCube Gebrauchsanleitung

D. Control PC Board Replacement
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, verify that the silicone rat-
tails holding the keypad and LCD display onto the control
board are pulled through the appropriate holes in the
board. See Keypad & LCD Display instructions.
3. Place the chassis on a clean fl at surface with the blower
facing down. Orient the replacement board so that the
keypad is over the rounded end of the chassis.
4. Tilt the board and connect the two wire harnesses near
the power supply board and insert the brown and blue
wires into the notch on the chassis. Tilt the board and
connect the two wire harnesses near the outlet port.
Connect the wire harness near the right corner of the
keypad. (Fig. 2)
5. Position the board (Fig. 3) so that: the hole on the board
(A), located below the ON/OFF key, is over the peg on the
chassis; the small hole (B), located near the LCD screen, is
over the screw hole on the chassis; and the cut-out (C) on
the left rear corner fi ts around the protrusion above the
air outlet port on the chassis. Move any stray tubing from
between the board and the chassis, verify that all wire har-
nesses are properly routed, and replace the T-15 screw on
the board.
6. Replace the cover. See instructions above.
7. Connect the CPAP to a PC serial port with cable DV54/
DV53D-615 and turn the CPAP on.
8. Use a terminal program (such as Windows HyperTerminal,
or equivalent) with COM settings 9600 baud, no parity, 8
data bits, 1 stop bit, Flow Control set to none.
9. When connection is established with the CPAP, the
terminal program will show: "RI;" every 1/2 seconds. This
display indicates that the CPAP is waiting for a handshake.
10. Type 'ri' and press ENTER. The CPAP should respond with
the fi rmware version in the form "V0.XX dd/mm/yyyy."
Please note that all commands are case sensitive. Repeat
this step if necessary to complete the handshake.
11. Type 'Mn<cr>'. The CPAP will report the model number
saved in memory, it should be "000000" if the PC board is
new.
12. Read the model number from the CPAP label on the bot-
tom of the unit (EX: DV54SE).
13. Type 'Mn=nnnnnn<cr>' where nnnnnn is the 6 digit
model number read in the previous step (use a space for
the last digit if necessary to make the string 6 digits). The
CPAP should return the new six-digit model number.
14. Type 'Sn<cr>'. The CPAP will report the serial number
2
3
B
saved in memory, it should be "00000000" if the PC board
is new.
15. Read the serial number from the CPAP label on the bottom
of the unit.
16. Type 'Sn=nnnnnnnn<cr>' where nnnnnnnn is the 8 digit
serial number read in the previous step. The CPAP should
return the new eight-digit serial number.
EN
A
C
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LT-2026