30
R-S300
R-S30
0
R154
R155
C
u
t off
R139 (L ch)
R140 (R ch)
0.1mV–10mV
(L ch)
0.1mV–10mV
(R ch)
R154
R155
R139
R140
MAIN (1) P.C.B.
■
AMP ADJUSTMENT
●
CONFIRMATION OF IDLING CURRENT
1. Right after power is turned on, confirm that the voltage across the terminals of R154 (L ch) and R155 (R ch) are
between 0.1 mV and 10 mV.
2. If measured voltage exceeds 10 mV, open (cut off) R139 (L ch), R140 (R ch) and reconfirm the voltage.
Attention
If the measured voltage exceeds 10 mV after repairing the power amplifier, check other parts again for any
possible defect before cutting the resistor.
3. Confirm that the voltage is between 0.2 mV and 15 mV after 60 minutes.
Summary of Contents for R S300
Page 4: ...4 R S300 R S300 R S300 U C R A L models R S300 G model FRONT PANELS ...
Page 5: ...5 R S300 R S300 R S300 A model REAR PANELS R S300 R model R S300 U C models ...
Page 6: ...6 R S300 R S300 R S300 L model R S300 G model ...
Page 7: ...7 R S300 R S300 REMOTE CONTROL PANEL RAX23 ...
Page 52: ...MAIN 3 P C B Side A MAIN 3 P C B Side B A B C D E F G H I J 1 2 3 4 5 6 7 52 R S300 ...
Page 73: ...73 R S300 R S300 ADVANCED SETUP U C A models ...
Page 74: ...74 R S300 R S300 R G L models ...
Page 75: ...75 R S300 R S300 MEMO ...
Page 76: ...R S300 ...