Service manual

zThe internal temperature of the unit has increased. Remove any objects blocking the vent

or clean as necessary.

No CATV or AIR reception

zIs the AIR/CABLE option set correctly? Please set the AIR/CABLE option to CABLE.

zAIR/CATV is connected improperly or not connected; please check all the AIR/CATV

connections.

zThe cable TV service is interrupted; please contact your cable operator.

zConnects to your ATSC antenna or coaxial cable from a local TV

Picture is cut off/with sidebar screen

zIs the image positioned correctly?

zAre screen mode adjustments such as picture size set correctly?

Figure 1 SMPS no power output

ViewSonic Corporation Confidential - Do Not Copy N4261w-1M