Service manual

3. DIAGNOSTIC CHECK
3.34 Service Manual BSM-4100
Checking the PRESS 1 Safety Check Item
1. Touch the “SELECT” key to select the item number 3.
2. Touch the “AUTO” key until the key name changes to “PRESS 1” so that the
PRESS 1 Safety Check item is selected.
3. Touch the “START” key to start the check.
4. Start pumping the hand bulb pump as soon as the “CHECK” message appears.
5. Quickly increase the pressure until the manometer reads 300 mmHg. From the
300 mmHg pressure point, slowly increase the pressure further. Check that the
“OK” message appears after the inflated pressure reaches a certain value in the
300 to 330 mmHg range. When the “OK” message appears, the “SAFETY
CIRCUIT ON” message also appears in the cuff pressure window.
NOTE
• If the pressure is raised too quickly to a value above 330 mmHg, the
“ERROR” message appears.
• Slowly increasing the pressure after the 300 mmHg pressure point
triggers the safety circuit to display the “OK” message within 30
seconds. If the pressure is maintained at 300 mmHg, the “OK” or
“ERROR” message appears after 3 minutes because of triggering of a
TIME1 safety event.
If an “ERROR” message appears, replace the NIBP Safety board or pneumatic
circuit with a new one.