Service manual

Section 5: Troubleshooting
5-7
5.7 ERROR CODES
An error code will be displayed when the NPB-190 detects a non-correctable
failure. When this occurs, the unit will stop monitoring, sound a low priority
alarm that cannot be silenced, clear patient data from the display, and display an
error code. Error codes will be displayed with EEE in the Saturation display and
the number of the code in the Pulse Rate display, i.e., EEE 1. Table 5-7 provides
a complete list of error codes and possible solutions.
Table 5-7: Error Codes
Code Meaning Possible Solutions
1
POST failure Replace UIF PCB
4
Battery dead 1. Check the voltage selector
switch.
2. Charge battery for 14 hours
3. Leads of battery reversed;
see paragraph 6.5
4. Replace battery
5
Too many microprocessor resets
within a period of time
1. Replace UIF PCB
2. Replace Power Supply
6
Boot CRC error Replace UIF PCB
7
Error on UIF PCB 1. Cycle power to clear error.
2. Check voltage selector
switch for proper setting.
3. Replace UIF PCB
11
Flash ROM corruption Replace UIF PCB
76
Error accessing EEPROM Replace UIF PCB
80
Institutional default values lost
and reset to factory default
values
Replace UIF PCB
84
Internal communications error Replace UIF PCB