Philips 862474 Manuale Utente

Part 3 Using Support Functions

Troubleshooting  

When the monitor detects an error condition, the monitor shows an error code on the display 
screen. If such an error occurs during monitoring operation, an audible alarm tone also 
sounds. Press the Alarm Silence button to terminate the audible alarm tone.

When an error code appears on the display, a number in hexadecimal representation indicates 
the nature of the error. Additionally, Diagnostic Mode can be used to gain access to an error 
code record, stored in non-volatile memory, of the last 10 error codes encountered. See 
Chapter 5 Diagnostic mode for further details on Diagnostic Mode.

Each error code corresponds to a particular problem in the monitor. Recommended actions to 
take when an error code is encountered are listed below.

Listed below are error codes that correspond to hardware problems, and the recommended 
actions to take should such an error be encountered.

1

Improper shutdown

1. Power cycle
2. If this error persists, return the 

monitor to your local Philips 
representative for service.

4

The measure valve of the 3.3V 
power supply is low.

1. Check the power supply.
2. Replace the power supply 

module.

5

The measured valve of the 3.3V 
power supply is high.

1. Check the power supply.
2. Replace the power supply 

module.

8

The measured value of the 5V 
power supply is low.

1. Check the power supply.
2. Replace the power supply 

module.

9

The measured value for the 5V 
power supply is high.

1. Check the power supply.
2. Replace the power supply 

module.

E

A checksum error is detected on the 
power-up settings region of flash 
memory. 

1. Turn power Off
2. Turn power On while pressing 

both the Contrast and Volume 
buttons simultaneously. (See 
“Restoring Factory Settings” on 
page 5-14.)

3. All user selections must be 

restored.

4. If problem persists, replace main 

PCB module.