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DSP-A595a
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.
AMP ADJUSTMENT
Note)
If R571, R577, R589, R595 and
R583 have already been cut off
and idling current does not flow,
reconnect R571, R577, R589,
R595 and R583.
Q521 ~ Q525 are transistors for
temperature correction.
Apply silicone grease to contact
surface with the heat sink.
R571(Lch)
R577(Rch)
R589(Cch)
R595(RLch)
R583(RRch)
R583
R692
R595
R589
MAIN
(
1
)
MAIN
(
7
)
Q523
Q525
Q524
Q522
Q521
R696
R694
R690
R688
R577
R571
Front Panel
0.1mV ~ 5.0mV
(DC)
R688(Lch)
R690(Rch)
R692(Cch)
R694(RLch)
R696(RRch)
Cut off
20


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