APPENDIX ‘B’
Changing the AC input(mains) voltage
Preparation
1. Make sure the power cord is disconnected from the tuner’s power inlet connector on the rear panel of the tuner.
2. Start with the tuner sitting on its feet with its faceplate facing you.
3. Remove the 4 screws from the tuner chassis top cover (2 screws each side).
4. Remove the top cover by lifting it straight up.
5. Place a hand towel or cloth over the faceplate to guard against accidental scratching.
Changing the input voltage
1. Looking towards the right rear of the chassis, you will see the power inlet receptacle where it is installed through the rear panel. On the front of the receptacle (the
part that faces inside the chassis, near the top, you will see a wire plugged into a spade plug. Its color will be as follows;
Primary Lead colors (from Power transformer)
Yellow =- 120VAC Orange = 220VAC Red = 240VAC
Towards the lower portion of the receptacle there is a white wire attached. This is the neutral wire. DO NOT CHANGE ITS LOCATION.
Below that is a green wire which runs from a post on the floor of the chassis, near the barrier strip. This is the earth ground for the chassis and is not to be removed.
WITH THE GREEN WIRE ATTACHED, THE CHASSIS IS AT EARTH GROUND. HOWEVER, ALL AUDIO CONNECTIONS ON THE FT-1 ARE DESIGNED TO BE ISOLATED, OR TO
‘FLOAT’ ABOVE GROUND. DO NOT ATTEMPT TO CHANGE THIS BY GROUNDING THE AUDIO CONNECTIONS TO THE CHASSIS.
To the left of the receptacle there is a barrier strip. Two of the three above primary transformer leads will be attached to the barrier strip spade lugs. To change the input
voltage;
(a) Noting the color of the lead presently connected to the power inlet receptacle, remove that lead.
(b) From the barrier strip. remove the lead of the color that represents the voltage you wish to change to and connect that to the recently vacated lug on
the power receptacle.
(c) Connect the colored lead removed from the power inlet connector to the recently vacated lug on the barrier strip. DO NOT CONNECT IT TO ANY OTHER
LUG ON THE BARRIER STRIP. TO DO SO MAY DAMAGE THE TRANSFORMER BEYOND REPAIR.
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