Tech Mode - Samsung CLP-770ND Service Manual

Alignment & Troubleshooting

4.1.4 Tech Mode

In service (tech) mode, the technician can check the machine and perform various test to isolate the cause of
a malfunction. While in Tech mode, the machine still performs all normal operations.
To enter the Tech Mode
To enter the Tech Mode, press " Menu + Up + Left + OK + Right + Stop + Menu" in sequence, and the
LCD briefly displays 'Tech Mode', the machine has entered service tech mode.
After entering the tech mode, select the item you want by using a button on control panel.
Below picutre shows to select the motor color opc item in Test Routine.
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Service Manual
Samsung Electronics