JVC AV-2956BE Service Manual page 71

CIRCUIT DIAGRAMS
MAIN PWB CIRCUIT DIAGRAM (1/4) ,(2/4) SHEET1
IC481
LA6515
L401
QQL244K-820Z
R482
R485
R487 C483
68K 33K
150K .22
NCB31CK-224X
C485
R483
R486
6.8K QETN1VM-476Z
3.3K
C484
.22
NCB31CK-224X
2SA562TM/Y/-T
R494 R490
5.6K 10K
R493 C488
Q484
22K 560p
Q482 *2
CH
*2
Q481
C487 *1
R491
22/35
68K
R492
C489
1.5K
47/35
R796
10K
Q704
*1
GND
3.3V_STB
8V
A_VCC
A_GND
5V
12V
MAIN PWB(3/4)
NECK
H_DRIVE
SHEET2
HFB
ABL
EW
P_ON/OFF
VDRA+
VDRB-
PROTECT
V5
32V
L001
TU001
X
QAU0466-001
TUNER
C101
R101
.0047
10
MC
IF
R005 CF101
NC X
75
32V L101
MC C001
.01 QQL244K-1R0Z
LOCK
L002 QQL244J-4R7Z
5V
C004
470/16
BM
R001 C003
220 .1
SDA
CH
C007 56p R002 220
SCL
CH
C008 56p
AS
BT
C005
.0022
AGC
MC
MC
R004
27K
MAIN PWB ASS'Y(1/4)
SCW-1957A-H2
NOTE) 1. Refer to the part list for the part number of IC701 and IC702.
2. Refer to page 2-11 for voltages of this circuit diagram.
3. Refer to page 2-12 for waveforms of this circuit diagram.
ADJUSTMENT
MAIN PWB ASS'Y(2/4) (FRONT LED)
CONNECTOR
SCW-1957A-H2
CN00C
QGA2501F1-06
CN00R
IC801
QGA2501C5-03Z
GP1UE281QKVF
IC302
REMOTECON
X
RECEIVER
C808
100/16
Y813
X
Y814
C317
R327 0
X X
QJL001-050600-E
QJL001-050600-E
5V
SDA
SCL
12V
D707 R794 Q706
*3 2.2K SSM3K02F-X D
5V
G
S
C792
Q483
C777 C778 .1
.1 47/35
R760
Q705
220 Q708
R496 SCL0
*2 SSM3K02F-X D
4.7K
SDA0
G
S
R497 C490 Q707 R783
R761 R795
R797 *1 10K
2.2K 220/16 220 100K
1K
R498 1/4W 3.3V_STB
22K R759
3.3K
Q791
*1
PW
SCL0
R499
SDA0
47K
R790 R793 100
C793
1K
10/50
D713
P_ON/OFF MA8039/H/-X
R984 R983 R982 R981
47K 3.9
3.9 47K
1/2W
1/2W V1.8A VssP2
Q982
*1 1.8V VssC4
C701
1.8V .22
R985 V1.8C4
Q984
4.7K C702
*1 Q983
.22
2SA562TM/Y/-T
V3.3A3
R986
4.7K
VrefP_Sdac
R792
L703
CONT 33 1/4W *4 CH
VrefN_Sdac
C704 C790
.1 27p
VrefP_Sdac
8V
VrefN_Sdac
A_VCC
VrefP_Sdac
A_GND C705
7p
CH
5V XtalIn
C706
5V 7p
CH
12V
XtalOut
X701
QAX0799-001Z
NECK VssA1
R756
H_DRIVE
10K
NECK C785 2.2
NECK
HFB
CONT
ABL CONT
L718 *4
C784 1/50
EW
V5P1
C707
P_ON/OFF C709
.1 .01 MC
Ph2
VDRA+
C710 R701
6800p MC 12K
VDRB-
Ph1
C708 C711
PROTECT 100/16
2.2/50
Gnd1
V5
C712 .22 TF
4.5/OTHER SecPll
C713 10/50
3.58/OTHER Dec8G
C714 .022 MC
EW
R702 470
EW
C715 .001
MC
VDRB- R703 100
SF102
C111 VDRB-
QAX0731-001 C716 .001
220/16 MC
C106 VDRA+
18p VDRA+
C110 R704
CH
.1 100
Vif1
Y008
X Vif2
TF
Vsc
SF101 C718
R107 QAX0872-001 QFZ0229-154Z
4.7K Iref
D101 R705
39K
MC 1SS356-X MC
GndIF
C109 C107
.0047
.01
Sif1
Sif2
C719 .01 MC
Y004 R706 220
AGC
0
Y003
C720 .001 MC
X EHT
MC R707 56K
MC MC
R708 100K
R709
1M
1/4W
D701
SCL
*3
SDA
C722
X
CF702 CF701
X X
Y715
QUY160-100Y
Y719
X
Y716
QQR1113-001Z
Y718
X
Y824
X
Y709
Y812
QUY160-050Y X
Y708 C773 Y722
X .1 QUY160-150Y
Y706 Y720
QUY160-250Y QUY160-100Y
Y705 Y717
QUY160-150Y QUY160-075Y
K702
QUY160-050Y Y704 Y714
QUY160-050Y X
K105
Y703 Y712
QUY160-150Y
QUY160-150Y X
K104
Y702 Y711
QQR1114-001Z
QUY160-075Y
QUY160-150Y
K102
Y101 Y710
QUY160-150Y
X BW
GND GND GND GND GND GND
QJL001-085633-E
D808
C806 LH22440-T16
X
R822
1K S805 S804 S803 S802 S801
QSW0619-003Z QSW0619-003Z QSW0619-003Z QSW0619-003Z QSW0619-003Z
R824
R823
470
X
R825
QRE141J-470Y
R821 R820 R819 R818
470 330 220 180
CN10A
CN00A
R753
R755
1.2K
1.2K
V1.8ADC
C766
.22
VssADC
C764
X
V3.3A2
V1.8A
C763
X
GndA
C761
.1 C762
100/16
RefAd
V3.3RefAdP
C760
.22
RefAdN
C758
.22
IC701 V3.3A1
R735
100
Bout R734 D715
100 *3
Gout R733 D716
100 *3
Rout D717
R732
*3
1K
C717
BLKIN
1/50
C757
560p CH
BCL
MC
C756
.1 1K
V5P3
Gnd3
C779 C754
10/50 C753
.1
B3/Pb
R779 100
1/4W
G3/Y
R780 100 C752
C751
R3/Pr
R781 100
1/4W
INSSW3
R782 1.2K
NC
Uout/INSSW2
Yout
C780
.1
Ysync
C786 0.1
Yin/G2/Y
C787 0.1
Uin/B2/Pb
C788 0.1
Vin/R2/Pr
V5Comb
C746
.1
VssComb
R728
Hout
R727
R726
FbiSo
R724 1K
SVM
R778 X
R722
470
Y707
QUY160-075Y
R766
X
Q701
X
R767
X
C662
10/50
D603
*3
C607
220/16
C608
Y610
220/16
QUY160-075Y
Y611
0
CP
!
CP650
ICP-N25-T
CN00M
X
OPEN
(No.YA466)2-5 2-6(No.YA466)
MAIN PWB(4/4)
VIDEO-3
(CRT SOCKET)
INPUT
SHEET2 CN10T
CN00T
J806
QNN0281-003
J807
J808
QNN0281-002
QNN0282-001
R817 J809
X QNS0155-001
R630
R632
270
D814 270
C825
LC805 *8 1/2W 1/2W
NCB31HK-152X
QQR1199-002
R631
1K R633
Y809 Y810 1K
X X
C831
0
C615 C616
D341 *3 1000/25 1000/25
D342 *3
Y909
R344 R961 C1
Q341 22 0 X
5V
D343 *3 *2 S_V_DET
D345
Y912
*3
QUY160-075Y
12V
Y1/CVBS1
C341
22/35
GND
Q371 R371
X X GND
Q373 R373
X
X
R377 VDO_DET
Q372 R372
X
X X 12V
L1
R375
X
C371
X
Q374
R1
X
D371
X D372
R376 GND
X X
V2/Y
GND
PB
GND
PR
GND
R720
680
R721
470
L2
R731 *3
D708
1/4W
L706 *4
C755 R2
220/16
.1
PB
GND
D753 GND
*8 V2/Y
.1
.1 PR
BASS
D751
*8
A_GND
5V
V_OUT
L716
*4
L_OUT
GND
R_OUT
100
10K
27K
R725
47
Q702
*1
D605
X
IC601
R723
AN5277
470
D604
X
D602
X
C605
R617
R637 X .22
R601
0 2.2K
A_R
R662 C606
R638
X
X .22
R602 R639 X
0 2.2K
R607
R640
D610 2.2
*3 1/2W 1K
1/4W
D607 *3
R634 R635 R636
R611 0 X 0
10K
Q601
*2
Q602
*2
R649
R609 1K
27K
R610
100K
C609
33/50
D608
D609
X
X
C661
R623 R620 100/50
33K 10K R621
2.2K
Q607
R622
*1
10K
Q608
*1
C613 C617
R624 10/50 X
68K
SPEAKER
CN00S
QGA2501C5-04Z
R816
NRSA63J-750X
J801
QNZ0454-002
C827 Y801 R801 Y819
0
X 75 BW
LC801
QQR1199-002
D817
Y802
X *8 VIDEO-1
S-VIDEO
INPUT
C821
NCB31HK-152X
C822
NCB31HK-152X
C828
R804
0
Y803 X
75
LC802
QQR1199-002
D810
Y804 X
C829 *8
0 Y805 X
R805
75
J802
LC803
QNN0349-002
QQR1199-002 VIDEO-2
Y806 X
D811
COMPONENT
C830
*8
0
LC804 VIDEO
QQR1199-002 R806
75
INPUT
D812
*8
C823
J803
NCB31HK-152X
QNN0348-001
C824
NCB31HK-152X
J805
X OPEN
R807
C804
100
1/2W 470/16
R809
220
R815
75
Q801 D813
J804
*8
KTA1267/YG/-T QNN0349-001
R811
C809
C802 82K
OUTPUT
X 10/50
C810 C803 R812
X 10/50 390
R813
82K
Q803
*6
Q805
*2
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