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chassis. Connect the test equipment to the proper ground(hot) or
(cold) when servicing, or incorrect voltages will be measured.
2.1. X-Ray Protection Circuit Check& Adjustments
This test must be performed as final check before the receiver is returned to the customer. If
voltages are out of tolerance, immediate service and correction is required to insure safe
operation and to prevent the possibility of premature componentfailure.
Equipment:
1. Isolation transformer.
2. High voltage meter.
3. D.C. Ammeter
4. Short jumper.
5. HHS jig (See figure below).
Preparation:
1. Make sure the receiver is turned off.
2. Connect the receiver to an isolation transformer.
3. Connect the ammeter serial from the flyback anode lead to the
picture tube anode socket.
4. Prepare short jumper and HHS jig.
Procedure:
1. Connect the short jumper between TPD16 & TPD17.
2. Connect the jumper diode between TPD14 and TPD15 (anode
connected to TPD15 and cathode to TPD14).
3. Apply 75VAC to AC input of isolation transformer.
4. Turn the receiver on.
Diode Connection Jumper.
7
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