Amp Adjustment; Confirmation Of Idling Current Of Main Amplifier - Yamaha RX-V595 Service Manual

RX-V595/R-V905/RX-V595RDS

AMP ADJUSTMENT

Confirmation of Idling Current of Main Amplifier

•
Right after power is turned on, confirm that the voltage across the
terminals of R688(Main Lch),R690(Main Rch), R692(Center),
R694(Rear Lch), R696(Rear Rch) are between 0.1mVand 5.0mV.
•
If it exceeds 5.0mV, open (cut off) R571 (Main Lch), R577 (Main
Rch), R589 (Center), R595 (Rear Lch), R583 (Rear Rch) and
reconfirm the voltage again.
•
Confirm that the voltage is 0.25mV ~ 15.0mV after 60 minutes.
R692
R696
MAIN (1)
R694
R690
R577
R688
R571
Front Panel
21
R583
Q523
R595
Q525
R589
Q524
MAIN (7)
Q522
Q521
0.1mV ~ 5.0mV
(DC)
R688(Lch)
R690(Rch)
R692(Cch)
R694(RLch)
R696(RRch)
Cut off
R571(Lch)
R577(Rch)
R589(Cch)
R595(RLch)
R583(RRch)
Note)
•
If R571, R577, R589,R595 and
R583 have already been cut off
and idling current does not flow,
r e c o n n e c t R 5 7 1 , R 5 7 7 ,
R589,R595 and R583.
•
Q521 ~ Q525 are transistors for
temperature correction.
Apply silicone grease to contact
surface with the heat sink.