Samsung Electronics
Service Manual
Alignment and Adjustments
4-5
4.2 Tech Mode and Setting
4.2.1 How to Enter Tech Mode
In service (tech) mode the technician can check the machine and perform various tests to help with failure
diagnosis.
When in Tech mode the machine still performs all normal operations.
To enter the Tech mode (SCX-4521F)
To enter the Tech mode press in sequence and the LCD
briefly displays ‘TECH’, the machine has entered service (tech) mode.
To enter the Tech mode (SCX-4321)
To enter the Tech mode press in sequence and the LCD
briefly displays ‘TECH’, the machine has entered service (tech) mode.
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