Service manual

2. TROUBLESHOOTING
2.8 Service Manual BSM-4100
Non-invasive Blood Pressure Problems
Problem Possible Cause/Criteria Action
NIBP MODULE
FAILURE message is
displayed.
DPU board or NIBP Safety board is faulty. Replace the faulty board with a new
one.
Air hose is blocked. Check the air hose.
Air tube between the NIBP Safety board and
NIBP socket is blocked or NIBP Safety board or
DPU board is faulty if this message appears soon
after the NIBP START/STOP key is pressed and
NIBP pump sounds like it’s moving.
NIBP SAFETY
CIRCUIT RUNNING
message is displayed.
Air tube between the NIBP Measure board and
NIBP socket is blocked or NIBP Safety board or
DPU board is faulty if this message appears in a
minute after the NIBP START/STOP key is
pressed and NIBP pump sounds like it’s moving.
Check the air tube connection.
Replace the faulty board with a new
one if the air tube is not blocked.
Cuff or air hose has an air leak. Replace the cuff or air hose with a
new one.
Air tube between the NIBP Safety board and
NIBP socket is loose or disconnected if the cuff
is not inflated when the NIBP pump sounds like
it’s moving.
Check the air tube connection.
AIR LEAK message is
displayed.
Air tube between the NIBP Measure board and
NIBP socket is loose or disconnected or NIBP
Safety board is faulty if the cuff is inflated when
the NIBP pump sounds like it’s moving.
Check the air tube connection.
Replace the faulty board with a new
one if the air tube connection has no
problem.
The air hose connector is faulty. Replace the air hose with a new one.
ECG RESP3 board or NIBP Safety board is
faulty or there is poor contact from the ECG
RESP3 board to NIBP Safety board if the ECG
and impedance method respiration can be
measured.
Check the connection from ECG
RESP3 board to NIBP Safety board
through the motherboard and DPU
board. Replace the faulty board with a
new one if the connection has no
problem.
The instrument does not
recognize the air hose
connected to the NIBP
socket on the
instrument.
ECG RESP3 board, motherboard or DPU board
is faulty or there is a poor contact from the ECG
RESP3 board to DPU board if the ECG and
impedance method respiration cannot be
measured.
Check the connection from the ECG
RESP3 board to DPU board through
the motherboard. Replace the faulty
board with a new one if the
connection has no problem.
A wrong cuff size is used or the condition of the
cuff wrapped around the patient’s arm is not
correct.
Check the cuff size and the wrapping
condition.
DPU board is faulty if the ECG, impedance
method respiration and SpO
2
cannot be
measured.
Replace the faulty board with a new
one.
NIBP measurement data
on the screen is wrong.
NIBP Measure board or DPU board is faulty or
there is a poor contact between the two boards if
the ECG, impedance method respiration and
SpO
2
can be measured.
Check the connection between the two
boards. Replace the faulty board with
a new one if the connection has no
problem.
If a message is displayed on the screen, follow
the message to solve the problem.
Refer to ERROR MESSAGES AND
TROUBLESHOOTING section in the
operator’s manual.
The cuff does not inflate
when the NIBP
START/STOP key is
pressed.
The Operation board, MAIN board or the cable
between the two boards is disconnected if there
is no message on the screen.
Check the cable connection. Replace
the faulty board with a new one if the
cable connection has no problem.