Pioneer VSX-820-K Service Manual page 50

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2. Notes on Ground Points Connection
[Note]
During repair, before checking the MAIN Assy, etc., with the rear chassis removed, be sure to connect the
GND terminal of the main capacitor to the chassis back (TUNER PACK chassis), as shown below, then connect the
power cord.
Without grounding connection, the protection circuit will be activated.
After repairing, be sure to remove the ground wire before reassembling.
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TUNER PACK chassis
MAIN Assy (SIDE B)
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Chassis back
GND wire
(Be sure to disconnect the GND wire
before reassembly.)
Main capacitor GND
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VSX-820-K
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