Yamaha Stagepas 500 Service Manual page 33

QQ
3 7 63 1515 0
< FAN >
Connect the circuit boards("CONTROL1 (1/3)", "DSP", "CONTROL2 (2/3):CN542-CN24") and a fan.
"CONTROL1(1/3)シート"、"DSPシート"、"CONTROL2(2/3)シート:CN542-CN24" 及び FAN を接続
TE
L 13942296513
Replace the AMP circuit boards.
Check
R564–566, 568,569,572,573
R580–583, 598
Q541–545, 548
C561
R564∼566,568,569,572,573
R580∼583,598
Q541∼545,548
C561
Replace the POWER circuit board.
www
POWERシートの交換
.
http://www.xiaoyu163.com
< Signal Path > < Power LED >
Power LED=BLINKING
I
Power LED = ON
No
K ( Q545: OFF )
Q545:
No
Base = 0.6 V (DC)
?
( Q545: ON )
Yes
< AMP:Operate Mode>
AMPシートの交換
の確認
2
x ao
y
i
http://www.xiaoyu163.com
8
1
Yes
[点滅]
?
POWER switch: OFF
No
No
No ( Q549: ON )
[点灯]
?
Remove the AMP circuit boards.
Yes
( Q549: OFF )
J
CN544: 11 pin
No
(CN546: 11 pin)
OUTPUT OK
?
Yes
Replace the AMP circuit boards.
Q Q
3 6 7 1 3
Q548: ON
No
Check
R577–579, 584–587
Q550–553
C563, 564
R577∼579, 584∼587
Q550∼553
C563,564
Check
R563,567,570,571,574–576, 535
Q546,547,558,559
C559,562,
D541,542
R563,567,570,571,574∼576,535
Q546,547,558,559
C559,562,
u163
D541,542
.
END
2 9 9 4 2 8
ON
Power LED=BLINKING
[点滅]
?
Yes
AMPシートを外す
Power LED = ON
[点灯]
?
Yes
AMPシートの交換
1 5 0 5 8 2 9 9 4
L
Q548:
Base = 0 V
?
Q548:OFF
Yes
の確認
m
co
の確認
STAGEPAS 500
9 9
2 8 9 9
33