Al
l r
ig
h
ts
re
ser
v
e
d
. C
o
pyr
ight
r
e
ser
v
e
d
•
R5
66
45
90_
L
P
_
C
P
U
.fm
0
3
.0
3.
03
• R
e
p
a
ir
i
n
str
u
ct
io
ns •
Ver
s
io
n
1
.0 •
Re
le
a
s
ed
Dräger Medical AG & Co. KGaA • EvitaXL
3
Repair instructions
Service LEDs
Fig. 1
CPU PCB 68332
G2
Lithium battery
U1
DC/DC converter
D35
Real-time clock
D1
Microprocessor
D22
EEPROM
3
Service LEDs
The service LEDs indicate a reset.
LED Reset
Meaning
1
Overvoltage
+5 V is too high.
2
Undervoltage
+5 V is too low.
3
CPU reset
The microprocessor, which
is located on the CPU 68332
PCB, resets its own
peripherals.
4
Reset up
The reset signal from the
Pneumatics Controller PCB
resets the CPU 68332 PCB.
5
Reset down
The reset signal from the
CPU 68332 PCB resets the
microprocessor on the
Pneumatics Controller PCB
and the boards on the
motherboard.
6
Display reset
The reset signal from the
CPU 68332 PCB resets the
microprocessor of the
control unit.
