Printed Circuit Board - Yamaha GX-505 Service Manual

A B
GX-505/GX-505VCD
PRINTED CIRCUIT BOARD (Foil side)
1
GX-505 INPUT P.C.B. (3)
(Lead Type Device)
2
DIGITAL OUT
GX-505 INPUT P.C.B. (3)
(Surface Mount Device)
3
4
Semiconductor Location
Ref. No. Location Ref. No. Location
IC1 C2 Q2 C3
IC2 D3 Q3 C3
IC10 G4 Q4 C4
IC26 F4 Q11 C3
Q12 D3
Q13 D3
Q17 D3
Q25 G4
Q26 G4
Q27 E4
Q28 F4
5
Q33 E4
44
6
C D
FROM : OPERATION(2)
REC LEVEL ADJ.
1
10
(Lch)
CLOSE.SW
OPEN SW
(Rch)
CLOSE
OPEN
MA
MB
DGND
+MCR
PLAY-SW
5V-SEBSOR
SENSOR-OUT
+SOL
CRO2 (Lch)
PACK
F.REC
NC
R.REC
(Lch)
(Rch)
9 1
E+
E-
(Rch)
Rch+
Rch-
Lch-
Lch+
AGND
BIAS ADJ.
FROM : OPERATION(2)
#22
TO : OPERATION(2)
E
GX-505 INPUT P.C.B. (1) (Lead Type Device)
HP.GND
5V
HP.R
5V
HPIN
HP.L
HP.R
HP.GND FROM : CD
E
HP.L
MUTESW
TONE.RIN
-
-
TONE.LIN
-
YMA
E
TUNE.RIN
E
TONE.ROUT
TONE.LIN
E
TONR.LOUT
TONE.ROUT
E
TONE.LOUT
E
-12V
+12V
5V
MDJA
MDJB
DGND
W6
W6
10
DGND
REM
SUB+5V
VREF
9
KEY1-1
KEY0
VOL A IN
VOL B IN
STANBY
TIMER
5.0V
FLRES
FLCE
FLCLK
FLDAT
FLGND
VP
FL1
FL2
DGND
W12
#17
TO : MAIN(1) W16
#15
TO : MAIN(1) W14
45
F G
FROM : TUNER
FREQUENCY
HP.GND
HP.R
HP.L
E
TONE.RIN
TONE.LIN
E
TONE.ROUT
TONR.LOUT
18
1 8
1
#16
W15
TO : MAIN(2)
H
STEP
(R only)
SUBWOOFER
OUT
OUT
AUX/MD
IN