Table of Contents
Advertisement
Troubleshooting
■ Troubleshooting Mechanism :
- The System Blcok has the last output terminal, VCTI, which shows the internal Test pattern.
- The Power Block supplies power to the Deflection Block
- The System Block receives all signal inputs, the signal-processed signal is sent to CRT Ass'y.
Deflection and focus are controlled by the Deflection Block
Troubleshooting by Modules
1) Enter Service Mode
(In SET STANDBY status, if you press "Mute", "1", "8", "2" and "Power" in sequence on the remote control, the screen is
turned on and the Service Mode screen appears.)
2) Check if the System Block is out of order.
Press OPTION → TEST PATTERN → Right direction key:
The TOSHIBA pattern,COLOR BAR, BLACK pattern and WHITE pattern etc are displayed on the screen.
If the pattern is not displayed or is displayed abnormally, the VCTI or the System Block is out of order.
3) Check if the Power BLOCK, which supplies power to the System block and the Deflection blcok, is out of order.
If you cannot turn the screen on by pressing the POWER ON/OFF button or the screen repeatedly turns on and off when
pressing the POWER ON/Off button, check if the Power BLOCK is out of order.
4) Check if the Deflection Block is out of order.
When the screen is not properly displayed and the left or right side of the picture is shrunk, or the top or bottom of the screen
is expanded or shrunk, check if the Deflection Blcok is out of order.
6-2
Samsung Electronics
Advertisement
Table of Contents
Troubleshooting
