Chapter 6 Troubleshooting; Checkpoints By Error Mode - Samsung CL-21M40MQ Service Manual

6. Troubleshooting

6-1 Checkpoints by Error Mode

Power LED: Check that the LED works when turning the Tact Switch ON/OFF
LED Indicators: See table 6-2-1 Basic Troubleshooting: LED Diagnosis on the Front Panel.
In case of a power failure or abnormal screen, check the following items.
1) Check that the power cord is correctly connected to electrical source equipment.
2) Check that the Tact Switch has been pressed.
3) Check that the signal cable is properly connected.
4) Check that channel setting has been set.
Samsung Electronics
Troubleshooting
6-1