LTV 1200 - Page 83

p/n 18603-001, Rev. C LTV
®
1200/1150 Ventilator Service Manual Page 7-5
Symptoms Possible Causes What to Do
Front panel ribbon cable
not properly connected.
Remove the power board to access the
ribbon cable connection on the main
board. Disconnect and reconnect the front
panel ribbon cable connector. See Main
Board Assembly in Chapter 8 for
instructions. Handle the ribbon cable
carefully to avoid scratching or damaging
it.
Front panel ribbon cable
damaged.
Defective switch.
Replace the front panel. See Front Panel
in Chapter 8 for instructions
Rotary switch is
disconnected.
Defective rotary switch.
Verify the rotary switch is properly
connected. If necessary, replace the rotary
switch assembly.
See Rotary Switch (Set Value Knob)
Assembly in Chapter 8 for instructions.
Continued...
A control doesn’t
activate
Set Value knob
doesn’t operate
Defective main board.
Replace the main board. See Main Board
Assembly in Chapter 8 for instructions.
Can’t unlock the
controls
HARD unlock method
selected under CTRL
UNLOCK
.
Two unlock methods are available on the
LTV
®
1200/1150 ventilator: (See the LTV
®
1200 or the LTV
®
1150 Ventilator
Operator's Manual for an explanation of
this feature.)
To unlock in EASY mode, press and
release the Control Lock button. To
unlock in HARD mode, press and hold
the Control Lock button for 3 seconds.
LMV OFF is
displayed.
Low Minute Volume alarm
is turned off.
This is an informational message only
(See the LTV
®
1200 or the LTV
®
1150
Ventilator Operator's Manual for an
explanation of this feature).
LMV LPPS OFF is
displayed.
Low Minute Volume alarm
is turned off and the LPP
ALARM has been set to
VC/PC ONLY.
This is an informational message only
(See the LTV
®
1200 or the LTV
®
1150
Ventilator Operator's Manual for an
explanation of this feature).
LPPS OFF is
displayed.
LPP ALARM has been set
to VC/PC ONLY.
This is an informational message only
(See the LTV
®
1200 or the LTV
®
1150
Ventilator Operator's Manual for an
explanation of this feature).
f PEEP OFF is
displayed.
The High Breath Rate and
High PEEP alarms are
turned off.
This is an informational message only
(See the LTV
®
1200 or the LTV
®
1150
Ventilator Operator's Manual for an
explanation of this feature).
HI PEEP OFF is
displayed.
The High PEEP alarm is
turned off.
This is an informational message only
(See the LTV
®
1200 or the LTV
®
1150
Ventilator Operator's Manual for an
explanation of this feature).