Service manual

3. DIAGNOSTIC CHECK
Service Manual BSM-4100 3.35
Checking the PRESS 2 Safety Check Item
1. Touch the “SELECT” key to select item number 3.
2. Touch the “AUTO” key until the key name changes to “PRESS 2” so that the
PRESS 2 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 150 mmHg. From the
150 mmHg pressure point, slowly increase the pressure further. Check that the
“OK” message appears after the inflated pressure reaches a certain value in the
150 to 165 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 165 mmHg, the
“ERROR” message appears.
• Slowly increasing the pressure after the 150 mmHg pressure point
triggers the safety circuit to display the “OK” message within 30
seconds. If the pressure is maintained at 150 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.