Philips 862474 ユーザーズマニュアル

Troubleshooting

Training  

Service personnel concerned with troubleshooting should review the following topics in this 
manual:

•

Error Codes (see “Error Codes” on 6-3)

•

Boot Sequence (see “Performance Assurance Test” on 4-11)

•

Performance Verification (see “Performance Procedures” on 4-22)

This is intended to be a practical, hands-on part of the training program. If possible, therefore, 
use a monitor to help you learn about troubleshooting the monitor.

When faced with a call regarding the monitor, there are some simple steps that are 
recommended to solve the failures described below. These failures account for the majority of 
known failure modes.

Monitor screen appears dim

Brightness not properly adjusted.

Display backlight tube worn.

Adjust brightness using Contrast button.

Replace backlight tube according to 
instructions in “Replacing the Backlight 
Tube” on page 9.

Monitor screen is blank

Display backlight tube worn or 
loose connection.

Main PCB module malfunction.

1. Check the backlight tube connector
2. Replace the backlight tube

Replace the Main PCB module according 
to instructions in 

.

Monitor fails to power-up 
when the On/Standby 
button is pressed.

Battery is dead or monitor is not 
plugged in.

Keypad malfunction or keypad 
connector is loose.

Make sure the monitor is powered on by 
either battery or AC power. Check that the 
battery is adequately charged and AC 
power fuses are securely connected.

1. Check the keypad connector.
2. Replace the keypad according to the 

instructions in 

.

No response when pressing 
the buttons on the front panel

Keypad malfunction or keypad 
connector is loose.

1. If only one button does not work, 

verify that the monitor is On.

2. Check the keypad connector
3. Replace the keypad according to the 

instructions in 

.