Amp Adjustments; Confirmation Of Idling Current - Yamaha RX-V795a Service Manual

RX-V795a/RDS/HTR-5170

AMP ADJUSTMENTS

Confirmation of Idling Current

1) No signal applied.
2) Non-loaded condition.
3) Aging is not neccessary.
Item
Test Point
MAIN L
CB529
MAIN R CB530
CENTER
CB531
REAR L
R761
REAR R
R813
*
Confirm that the voltage at the test points is 7.5mV ~ 12mV after 60 minutes.
Note)
•
If R557(L ch), R565(R ch), R572(C ch), R744(RL ch) or R751(RR ch) have already been
cut off and idling current does not flow, reconnect R557(820Ω), R565(820Ω), R572(820Ω),
R744(820Ω) or R751(820Ω).
•
Q514, Q516, Q518, Q707 and Q710 are transistors for temperature correction. Apply silicone
grease to the contact surface with the heat sink.
21
Rating (DC)
If the measured voltage exceeds1.6mV, cut the
lead wire of R557(L ch), R565(R ch), R572(C ch),
0.05mV~1.5mV
R744(RL ch) or R751(RR ch) and then check
again if each measured value satisfies the rating.
R751
R813
R744
R761
MAIN(2)
0.05mV ~ 1.5mV (DC)
R761 (RL)
R813 (RR)
Note
CB530
R572
R557
CB531
MAIN(1)
0.05mV ~ 1.5mV (DC)
Cut OFF
R557 (L ch)
R565 (R ch)
R572 (C ch)
R744 (RL ch)
R751 (RR ch)
R565
CB529
CB529 (L ch)
CB530 (R ch)
CB531 (C ch)