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Buttons/wheels (all Monitors) - Philips M3921A Service Manual

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Troubleshooting Guide

Buttons/Wheels (All Monitors)

56
Code (hex)
508xxxx
trend error
509xxxx
flash memory data error
50axxxx
SpO
50bxxxx
ECG error
50cxxxx
power-down task error
50dxxxx
on-board diagnostic error
50exxxx
power monitor error
50fxxxx
temperature measurement error
510xxxx
internal user interface error
511xxxx
error handling error
513xxxx
serial driver error
514xxxx
system software errors (A1 only)
The following lists recommended actions to address problems with the wheel
and front-panel buttons.
Condition
1. The monitor fails to power-up when
the ON/STANDBY button is pressed.
2. The monitor powers-up, but some/
one of the other buttons does not
respond.
3. When the wheel is rotated, no
highlight appears on the display
screen, and/or the monitor does not
respond to wheel presses.
Explanation
error
2
1. Take steps as noted in "Power" on
page 48.
1. Ensure that the keypad is plugged
into the Main PCB. If the connection
is good, change the keypad.
2. If the problem persists, change the
Main PCB.
1. Ensure that the encoder cable is
plugged into the Main PCB. If the
connection is good, change the
encoder.
2. If the problem persists, replace the
Main PCB.
Recommended Action
Chapter 5 - Troubleshooting

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