Accessing Service Mode And Service Level 1 - Mallinckrodt Nellcor NPB-70 Service Manual

4.2.4

Accessing Service Mode and Service Level 1.

4.2.3.3 Contrast Cal. (calibration)
The Contrast Cal. gives the service technician the option to change the
middle point default value of the contrast intensity of the LCD.
Table 4-1 describes how to change the contrast cal. settings.
4.2.3.4 CO Calib. (calibration)
2
The CO Calib. allows the service technician to perform a calibration
2
check and calibration process to ensure the accuracy of the monitor.
Section 10: Performance Verification describes the calibration check and
calibration process procedure.
Table 4-1 describes how to access the service mode, change parameter
settings and how to change Contrast Cal. settings.
Objective
To access Service Mode During self-test,
To access Event
Messages
To access Interface
Test Screen
To change the
parameter setting or
value
Table 4-1: Accessing Service Mode and
Changing Parameter Settings
Action
press and hold
simultaneously
and
long press
long press
short press
Section 4: Service Mode
Response
Self-test occurs and the
Information Screen
appears:
4-3