When Checking The P.c.b.s - Yamaha NS-BP300 Service Manual

Micro component system receiver/speaker package
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When checking the P.C.B.s:

Spread the rubber sheet and the cloth. Then place the amp unit on the cloth and check it. (Fig. 3)
Connect the ground point of the rear panel to the chassis with a ground lead or the like. (Fig. 3)
Reconnect all cables (connectors) that have been disconnected.
When connecting the flexible flat cable, be careful with polarity.
Front panel unit
Top cover unit
Fig. 3
Rear panel
Amp unit
Rubber sheet and the cloth
Rubber sheet and the cloth
R-840/NS-BP300
Ground lead
Chassis
19

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