CRX-E150
CRX-E150
17
■
AMP ADJUSTMENTS
●
Confirmation of Idling Current
1) No signal applied.
2) Non-loaded condition.
3) Aging is not neccessary.
Note
If the measured voltage exceeds 5mV, cut the lead wire of R446 (L
ch)
or R447 (R ch) and then check again if each measured value satisfies
the rating.
Item
MAIN L
MAIN R
Test Point
R460
(Between terminal)
R461
(Between terminal)
Rating (DC)
0.1mV—5mV
Note)
•
If R446 (L ch) or R447 (R ch) have already been cut off and
idling current does not flow, reconnect R446 (680 ohms)
or R447 (680 ohms).
•
Q412 and Q413 are transistors for temperature correction.
Apply silicone grease to the contact surface with the heat
sink.
R446 (L ch)
R447 (R ch)
Cut OFF
0.1mV ~ 5mV (DC)
R460 (L ch)
R461 (R ch)
* Confirm that the idling current is 0.25mV — 15mV after 60 minutes.
R460
R446
R447
Q412
Q413
R461
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