JVC UX-G300B Service Manual page 28

Audio amp section
GVA10151-A1(2/3)
OUTL
VOLUME IC
SWOUTL
VOLDATA
VOLCLK
16 15 14 13
17 18 19 20
VOLLATCH
A9V
SWOUTR
OUTR
AGND
US3.3V
AHB
AHB
VOLCLK
VOLCLK
VOLDATA
VOLDATA
VOLLATCH
VOLLATCH
HPMUTE
HPMUTE
SMUTE
SMUTE
SWMUTE
SWMUTE
AUXINR
AUXINR FL
AUXINL
AUXINL
TUR
TUR
FR
TUL
TUL C5801 R5801
CDR NI
680
CDR
CDL
CDL
DABR
DABR
B4125
DABL
DABL
IPODR
IPODR
IPODL
K5801
IPODL
B/W
PROT
PROT
DC_DET
DC_DET
MUTE
MUTE
STBY
STBY
B4126
LEVEL_DET
LEVEL_DET
C5901 R5901
FREQ_BEAT
FREQ_BEAT
LRMUTE 680
NI
LRMUTE
CN510 CDR
CDL
QGF1036C2-05
FOR DVD MODEL ONLY
A9V 1
FAOUTR 2
AGND 3
FAOUTL 4
LRMUTE 5
CN520 QGF1208C1-11
3.3V PROT
PROT 11
3.3V DC_DET
DC_DET 10
0V LOUT
LIN 9
0V
AGND 8
ROUT
0V
RIN 7
MUTE
0V
MUTE 6
STBY
3.3V
STBY 5
0V
NC 4
AHB_CTL
0V
AHB_CTL 3
LEVEL_DET
0V
LEVEL_DET 2
FREQ_BEAT
0V
AMBEATCUT 1
R5105
43K
R5102
9.1k
C5111
4700P
C5106
3300P
R5301
OUTR
12 11 10 9 8 7 6 5 4 3 2 1
1.8K
IC500
NJU7391V-X
21 22 23 24 25 26 27 28 29 30 31 32
C5211
4700P
C5206
3300P
R5401
R5202 AUXINR
OUTL
1.8K
9.1k
R5204
24K
IPODR
FR
TUR
DABR
AHB
6 5 4
Q3
R1
LR MUTE
Q1
R2
Q2
1 2 3
R5803 C5803
NI NI
NOTES
1. VOLTAGES ARE DC-MEASURED WITH A DIGITA L
VOLT METER OR OSCILLOSCOPE WITHOUT INPUT SIGNAL.
CONDITION --- CD STOP MODE
2. UNLESS OTHERWISE SPECIFIED.
ALL RESISTORS ARE 1/4W 5% CARBON FILM RESISTO
OR 0.063W 5% THICK FILM CHIP RESISTOR
ALL CAPACITORS AR E CERAMIC CAPACITOR
MYLAR CAPACITOR.
3. NI=NO INSERT
4. "0"= SHORT BY PATTERN
SMUTE
R5356
4.7K
1
R5306
R2
2K
R1
Q3
C5303
6
0.068
R5309 470K
R5313
R5310 1K
C5306 0
10/63
4 3 2 1
-
+
AHB
R5413
0
R5410
5 6 7 8
1K
C5406
R5409 10/63
470K
C5403
0.068
0V
R5406
2K
R5351 D5351
MA111- X
51K
0V 0V
R5311
R5411
10K 10K
Q5401
KTC3875/YG/-X
0.6V 0.6V
0V 0V
C5502
C5501
R5501
2.2/50
NI
1.2K
B4127
C5509
6 5 4
0.1/16
Q3
R1
Q1
R2
Q2
1 2 3
C5602
C5601
2.2/50
NI
R5601
1.2K R5508
10K
B4128
ALL RESISTANCE VALUES ARE IN OHM( ) .
ALL CAPACITANCE VALUES ARE IN F(P=pF).
ALL E.CAPACITORS ARE SHOWN IN THE FORM
OF CAPACITANCE( F) /RATED VOLTAGE (V) .
R
ALL INDUCTANCE VALUES ARE IN H(m=mH).
ALL DIODES ARE MA111-X
OR
2-4
SMUTE
2 3
Q2
Q1
5 4
ROUT
S.W.OUT
R5701
NI
SWOUTL
Q5701
NI
SWOUTR
LOUT R5751
C5704
NI
R5703 NI
NI
6 5 4
Q3
R1
Q1
R2
Q2
1 2 3
K5701
SWMUTE
B/W
R5354 AHB_CTL
K5702
1.2K
NI
R5503 C5503 C5504
56K
150P 100P
C5505 R5506
100/16 22
R5504 R5505
11K
6.8K
5 6 7 8
3 2 1
-
+
4 3 2 1
4 5 6
R5604 R5605
6.8K 11K
C5604
R5603 R5606
56K 100P
22
C5603 C5605
150P 100/16
HEADPHONE AMP
R5704
NI
J5001
QNN0780-001
1
2
D5701
NI
D5702
NI
C5706
NI
3
HPR
HPR
AGND
HPL
HPL