Onkyo T-4150

Perform safety check before releasing set to customer. Use insulating-resistance tester.

Unit uses memory back-up system. Requires periodic power cycling to maintain memory.

Instructions for changing FM/AM band step by adding/removing diodes.

Components marked A are critical for fire/shock risk. Replace with specified parts only.

Details on connections for control keys and the diode matrix.

Block diagram and pinout for the µPB553AC prescaler IC.

Schematic diagram for the worldwide model of the FM stereo/AM tuner.

Schematic diagram for the 120V model of the FM stereo/AM tuner.

Schematic diagram for the 220V/240V models of the FM stereo/AM tuner.