When Checking The P.c.b.s; When Checking The Main P.c.b. - Yamaha R-S300 Service Manual

When checking the P.C.B.s:

• Put the rubber sheet and cloth over this unit. Then place the sub-chassis unit on the cloth and check it. (Fig. 4)
• Connect the ground point of the sub-chassis unit to the chassis with a ground lead or the like. (Fig. 4)
• Reconnect all cables (connectors) that have been disconnected.
• When connecting the flexible flat cable, be careful with polarity.
Ground lead
Rubber sheet and cloth
When checking the MAIN (1) P.C.B.:
• Spread the rubber sheet and the cloth. Then place this unit on the cloth upside down. (Fig. 5)
• Remove 6 screws ( ⑫ ) and then remove the chassis cover. (Fig. 5)
Sub-chassis unit
Fig. 4
⑫
⑫
Rubber sheet and cloth
Fig. 5
⑫
Chassis cover
MAIN (1) P.C.B.
R-S300
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