27
STAGEPAS 300
• Trouble Shooting (POWER circuit board)
START
F1 (Fuse)
OPEN ?
Yes
No
< Fuse :Primary >
+VB = +38 V (DC)
?
CN4: 7 pin
Yes
No
CN4: 5 pin
Yes
No
+15 V (DC) ?
CN19: 7 pin
Yes
No
+5 V (DC) ?
CN19: 6 pin
Yes
No
-15 V (DC) ?
CN19: 8 pin
Yes
No
Yes
No
-VB = -38 V (DC)
?
Check
IC801,D804,D830
and peripheral
IC801,D804,D830
及び周辺の確認
Check
IC805 and peripheral
IC805及び周辺の確認
Check
IC803,D829,D814
and peripheral
IC803,D829,D814
及び周辺の確認
Check
Q806,D824,R847,R851
Q806,D824,R847,R851
の確認
VDR= -28 V (DC)
?
CN4: 3 pin
No
Check
Q807,D825,R848,R856
Q807,D825,R848,R856
の確認
VDR= -28 V (DC)
?
CN6: 3 pin
1
2
Yes
< Power Supply :+VB >
< Power Supply :-VB >
< Power Supply :+15 V >
< Power Supply :-15 V >
< Power Supply :+5 V >
[ No Load ]
< Rch :VDR2 >
A
B
C
D
E
F
G
H
Connect the Power Amplifier Units. (AAX62070)
パワーアンプユニット(AAX62070)を接続
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TEL 13942296513 QQ 376315150 892498299