Part 2 Isolating and Solving Monitor Problems

Symptom

Cause of Failure

Remedy

 

 

 

No sound from monitor

Tone is switched off or low.

1. Turn the volume up by pressing the

 

 

Volume button.

 

 

2. Power-cycle monitor. Tone should

 

 

sound when monitor boots up.

 

 

3. Check cable connections to the

 

 

speaker.

 

 

 

Incorrect Time Stamps

The monitor’s real time clock is

Power the monitor On and then reset the

 

defective.

time and date. See the C3 Instructions for

 

 

Use guide for instructions on how to set

Invalid data stored showing

 

the date and time.

wrong times for data

 

 

 

 

 

Cannot reprogram the time

Main PCB module malfunction.

Replace the Main PCB module according

and date correctly

 

to the instructions in “Removing the

 

 

Main PCB Module” on 7-12.

Fluid dripping from the

LCD Display damaged or cracked.

Replace LCD Display.

monitor

 

 

 

 

 

Decrease in light intensity on

Backlight tube is worn out.

Replace backlight tube according to

display.

 

instructions in “Replacing the Backlight

Brightness decreases from

 

Tube” on page 7-9.

 

 

top to bottom or bottom to

 

 

top.

 

 

 

 

 

No tone alarms

Audible alarms are not switched

Make sure audible alarms are switched on.

 

on.

 

Speaker will not work

Cable disconnected.

Reconnect cable.

 

 

Defective speaker.

Replace speaker.

 

 

 

 

 

The wheel is rotated, no

Main PCB module malfunction.

Replace the Main PCB module according

highlight appears on the

 

to the instructions in “Removing the

display screen, and/or the

 

Main PCB Module” on 7-12.

monitor does not respond to

 

 

wheel presses.

 

 

 

 

 

6-10Troubleshooting

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Philips 862478, 862474 manual 10Troubleshooting

862474, 862478 specifications

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