Yamaha DP-U50 Service-Handbuch - Seite 30
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A
B
DP-U50
I
PRINTED CIRCUIT BOARD (Foil side)
1
Semiconductor Location
G
Ref. No.
Location
D5
E2
D6
F3
D7
F3
D8
E3
D9
C3
D14
D5
D15
E4
D16
E4
D17
D2
D18
F3
D19
F3
Ref. No.
Location
IC3
E2
2
IC6
E2
IC7
F2
IC8
F2
IC10
F2
IC11
F2
IC12
E3
Ref. No.
Location
Q1
E3
Q2
F3
Q3
E3
Q5
D3
Q8
E2
Q17
F3
Q18
F3
Q19
F2
Q20
F2
Q24
D3
Q26
F3
3
Q27
F4
Q28
F3
L
Q29
F3
E
R
Q30
D4
+5D SW
Q31
D4
PHONE
Q32
D3
G
Q33
D3
4
5
E-32/J-30
6
C
MAIN P.C.B.
FROM : DSP
/R MU
PHONE
DA
CE1
PRT DC
GND
PS
FROM : OPERATION (2)
GND
-21V
AC1
AC2
FROM : OPERATION (1)
D
E
CENTER
GND
LFE
RLCH
/C MU
GND
RRCH
/S MU
FRCH
GND
CK
FLCH
AGND
CE2
+5A
+9V
PRT I
+12V
-15V
SP ON
+15V
DGND
/A MU
AC DET
+5D SW
POW
+5D SUB
1
9
AC2
AC15V
AC15V
AC1
FROM : POWER CORD
FROM : POWER TRANSFORMER
E-33/J-31
F
1
8
1
9
G
H