Sylvania SRT702A Operation Instruction Manual page 19

This operation instruction is only intended for reference. No further
notice is available to any modification of all information contained
therein. Due to continuing improvements, the features and design
are subject to change without notice.
No repairable components exist in the machine. Don't try to dismantle
and improve the TV box, and the high voltage in the machine may
cause danger. Maintenance and adjustment of the TV box is
subject to professionals.
Warning
Warning
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