JVC AV-29JT14/P, AV-29JT34/P Schematics
SCHEMATIC DIAGRAMS
FLAT COLOUR TELEVISION
YA18320049
AV-29JT14/P,
AV-29JT34
CD-ROM No.SML200411
/P
BASIC CHASSIS
CW
COPYRIGHT © 2004 Victor Company of Japan, Limited
No.YA183
2004/11
AV-29JT14/P,AV-29JT34
/P
STANDARD CIRCUIT DIAGRAM
NOTE ON USING CIRCUIT DIAGRAMS
1.SAFETY
The components identified by the symbol and shading are
critical for safety. For continued safety replace safety ciritical
components only with manufactures recommended parts.
2.SPECIFIED VOLTAGE AND WAVEFORM VALUES
The voltage and waveform values have been measured under the
following conditions.
(1)Input signal : Colour bar signal
(2)Setting positions of
each knob/button and
variable resistor
(3)Internal resistance of tester
(4)Oscilloscope sweeping time
(5)Voltage values
Since the voltage values of signal circuit vary to some extent
according to adjustments, use them as reference values.
: Original setting position
when shipped
: DC 20kΩ/V
: H
: V
: Othters
: All DC voltage values
20µs / div
5ms / div
Sweeping time is
specified
3.INDICATION OF PARTS SYMBOL [EXAMPLE]
In the PW board
: R209
R209
Type
No indication
MM
PP
MPP
MF
TF
BP
TAN
(3)Coils
No unit
Others
(4)Power Supply
Respective voltage values are indicated
(5)Test point
: Test point
(6)Connecting method
: Ceramic capacitor
: Metalized mylar capacitor
: Polypropylene capacitor
: Metalized polypropylene capacitor
: Metalized film capacitor
: Thin film capacitor
: Bipolar electrolytic capacitor
: Tantalum capacitor
: [µH]
: As specified
: B1
: 9V
: Connector
: Receptacle
: Only test point display
: Wrapping or soldering
: B2 (12V
: 5V
)
4.INDICATIONS ON THE CIRCUIT DIAGRAM
(1)Resistors
Resistance value
No unit : [Ω]
K
M
Rated allowable power
No indication : 1/16 [W]
Others : As specified
Type
No indication
OMR
MFR
MPR
UNFR
FR
Composition resistor 1/2 [W] is specified as 1/2S or Comp.
(2)Capacitors
Capacitance value
1 or higher : [pF]
less than 1
Withstand voltage
No indication : DC50[V]
Others : DC withstand voltage [V]
AC indicated
Electrolytic Capacitors
47/50[Example]: Capacitance value [µF]/withstand voltage[V]
: [kΩ]
: [MΩ]
: Carbon resistor
: Oxide metal film resistor
: Metal film resistor
: Metal plate resistor
: Uninflammable resistor
: Fusible resistor
: [µF]
: AC withstand voltage [V]
(7)Ground symbol
: LIVE side ground
: ISOLATED(NEUTRAL) side ground
: EARTH ground
: DIGITAL ground
5.NOTE FOR REPAIRING SERVICE
This model's power circuit is partly different in the GND. The
difference of the GND is shown by the LIVE : ( ) side GND and the
ISOLATED(NEUTRAL) : ( ) side GND. Therefore, care must be
taken for the following points.
(1)Do not touch the LIVE side GND or the LIVE side GND and the
ISOLATED(NEUTRAL) side GND simultaneously. if the above
caution is not respected, an electric shock may be caused.
Therefore, make sure that the power cord is surely removed from
the receptacle when, for example, the chassis is pulled out.
(2)Do not short between the LIVE side GND and ISOLATED(NEUTRAL
side GND or never measure with a measuring apparatus measure
with a measuring apparatus ( oscilloscope, etc.) the LIVE side GND
and ISOLATED(NEUTRAL) side GND at the same time.
If the above precaution is not respected, a fuse or any parts will be broken.
Since the circuit diagram is a standard one, the circuit and
circuit constants may be subject to change for improvement
without any notice.
NOTE
Due improvement in performance, some part numbers show
in the circuit diagram may not agree with those indicated in
the part list.
When ordering parts, please use the numbers that appear
in the Parts List.
)
(No.YA183)2-1
CONTENTS
SEMICONDUCTOR SHAPES .................................................................................................................................... 2-2
USING P.W.BOARD ........................................................................................................................................................2-2
BLOCK DIAGRAM ............................................................................................................................................................ 2-3
CIRCUIT DIAGRAMS
MAIN PWB CIRCUIT DIAGRAM[AV-29JT14/P](1/2) ....................................................................................................... 2-5
MAIN PWB CIRCUIT DIAGRAM[AV-29JT14/P](2/2) .......................................................................................................2-7
MAIN PWB CIRCUIT DIAGRAM[AV-29JT34/P](1/2) ....................................................................................................... 2-9
MAIN PWB CIRCUIT DIAGRAM[AV-29JT34/P](2/2) ..................................................................................................... 2-11
CRT SOCKET PWB CIRCUIT DIAGRAM ...................................................................................................................... 2-13
FRONT CONTROL PWB CIRCUIT DIAGRAM ............................................................................................................. 2-15
PATTERN DIAGRAMS
MAIN PWB PATTERN [AV-29JT14/P] ............................................................................................................................ 2-17
MAIN PWB PATTERN [AV-29JT34/P] ............................................................................................................................ 2-19
CRT SOCKET , FRONT CONTROL PWB PATTERN ................................................................................................... 2-21
VOLTAGE CHARTS ...................................................................................................................................................... 2-23
WAVEFORMS ................................................................................................................................................................... 2-24
SEMICONDUCTOR SHAPES
TRANSISTOR
BOTTOM VIEW FRONT VIEW TOP VIEW
CHIP TR
E
C
B
ECB
B
(G)E(S)C(D)
ECB
ECB
C
BE
IC
BOTTOM VIEW FRONT VIEW TOP VIEW
OUT
E
IN
IN OUTE
1 N
1 N
CHIP IC
TOP VIEW
1
N
1
N
USING P.W. BOARD
P.W. BOARD ASS’Y NAME AV-29JT14/P AV-29JT34/P
MAIN P.W. BOARD SCW-1077A-H2 SCW-1081A-H2
CRT SOCKET P.W. BOARD SCW-3004A-H2
FRONT CONTROL P.W. BOARD SCW-8004A-H2
1
N
2-2(No.YA183)
BLOCK DIAGRAM
VIDEO-1
S_VIDEO
INPUT
VIDEO-2
COMPONENT
VIDEO
INPUT
OUTPUT
VIDEO-3
INPUT
(FRONT)
AC IN
J801
S-VIDEO
J802
J803
J804
VIDEO
J802
VIDEO
J803
AUDIO-L
J804
AUDIO-R
CB
CR
MAIN PWB
IC701 MAIN MICRO COMPUTER
IF㨯VIDEO㨯RGB㨯SYNC㨯DEF. PROCESS
108,109
SCL
SDA
TU001
TUNER
SW1
Y1
C1
CVBS1
V
L1
L
R1
R
V2/Y
Y
PB
PR
L2
L
R2
R
V-OUT
L-OUT
L
R-OUT
R
V3
L3
R3
TV/VIDEO
VOL+
IF
REMOCON
RECEIVER
VOL- CH+ CH- MENU
S901
POWER SW
F901
IC702
MAIN MEMORY
SF101
SAW FILTER
SF102
SAW FILTER
POWER
LED
127,128
3, 6
IC481
ROTATION
FRONT CONTROL PWB (1/2)
111
98,99
119
122
29, 30
24, 25
97
79
80
78
55
58
59
51
49
50
56
57
34
35
48
36
37
SCL1, SDA1
SCL0, SDA0
ROTATION
LED
REMOTE
KEY_IN
SV_DET
SIF IN
VIF IN
Y
PB
PR
V2
Y/V1
C1
V3
L1
R1
L2
R2
L3
R3
VOUT
LOUT
ROUT
ROTATION
2, 8
SIF DETECT
VIF DETECT/AGC/AFT
SOUND TRAP
VIDEO
SELECT
AUDIO
SELECT
COIL
I2C
BUS
I/O
PORT
MICRO
COMPUTER
VIDEO
C
IDENT.
Y
COMB FILTER
Y DELAY ADJ.
AUDIO
SELECT
COLOUR
DEMOD
AUDIO
CONTROL
D901
RECT
IC921
POWER
REG
DIGITAL SIGNAL PROCESS
PEAKING SCAN
VELOCITY MOD.
U/V DELAY
SKIN TONE
U/V TINT
SATURATION
B-Y R-Y
BASE-BAND
DELAY LINE
SYNC
SEP.
OUT_L
OUT_R
T921
SW
TRANSF.
PC901
VOLTAGE
FEEDBACK
60
61
RRGGB
B
RGB MATRIX
&
GAMMA
V. DRIVE
PARABOLA GENERATE
H. DRIVE
1.8V REG
1.8V REG
IC972
3.3V REG
IC975
5V REG
IC973
12V REG
L951
IC951
ERROR
AMP
OSD
INSERT
IC974
IC976
3.3V_STB
5V
ROUT
GOUT
BOUT
SVM
VDA,VDB
EWD
HOUT
1.8V
V1.8V
8V
12V
32V
85
86
87
65
22, 23
21
65
9
3
1
IC451
PARABOLA AMP
B1
IC601
AUDIO AMP
IC401
V. OUT
PARABOLA DRIVE
T522
FBT
Q522
H. OUT
BASS
20
13
23
5
Q461
FOCUS
SCREEN
EHV
R
G
IC351
B
RGB OUT
Q208,Q209
VM OUT
CRT SOCKET
PWB
[AV-29JT34/P]
J805
BASS SPEAKER OUT
FRONT CONTROL
PWB (2/2)
V
DEF YOKE
H
DY01
V01
VM
COIL
J801
HEADPHONE
SPEAKER L
SPEAKER R
2-4(No.YA183)(No.YA183)2-3
CIRCUIT DIAGRAMS
MAIN PWB CIRCUIT DIAGRAM [AV-29JT14/P] (1/2)
CN00C
QGA2501C5-06Z
220
220
R764
R765
C778
VCCWPSCL
A0A1A2
IC974
MM1561JF-X
X
R109
X
Q102
Q001
X
Y005
0
47/16
C777
.1
R760
100
100
R761
SDA
VSS
Y791
X
R737
3.3K
C982
47/16
C965C983
X
R110
C108
Q704
.1
X
*1
SF102
QAX0723-001
C106
.01
Y008
0
SF101
X
C107
X
Y003
X
X
C105
D706
MA8036-X
IC702
BL_GND
3.3V_STB
A_VCC
A_GND
H_DRIVE
P_ON/OFF
VDRA+
VDRB-
PROTECT
VER_PROTECT
IC976
MM1561JF-X
R978
3.3K
C986
C985
47/16 .1
STB1
8V
5V
12V
3.3V
NECK
HFB
ABL
EW
32V
TU001
QAU0353-001
TUNER
K103
IF
R005
NC
QAX0349-001
32V
C001
LOCK
L002
5V
BM
R001
220
SDA
SCL
R002
220
AS
BT
C005
.0022
AGC
R004
27K
X
R101
0
82
CF101
.01
QQL244J-4R7Z
C003
.1
L001
QQL244K-8R2Z
C002
10/50
C004
470/16
33/16
C006
x
K101
C101
.01
L003
QQL244J-4R7Z
3.9K
R003
.01
C103
X
X
R008
R007
!
Y981
X
Y973
X
10/50
C111
470/16
C110
.1
L101
QQL244K-1R0Z
R107
8.2K1.8K
R102R103
X
100
R104
D101
X
0
C109
Q101
22
Y007
X
R105
2SC5083/L-P/-T
Y004
X
27
R106
Q103
X
X
R108
.01
C102
47/25
C104
R006
X
X
DGS
D001
Q002
DGS
X
Y006
0
MAIN PWB ASS'Y (1/2)
SCW-1077A-H2 [AV-29JT14/P]
Note: 1. Refer to the part list for the part number of IC701 and IC702.
2. Refer to page 2-23 for voltages of this circuit diagram.
3. Refer to page 2-24 for waveforms of this circuit diagram.
220
220
R762
R763
R974
Q791
DTC124ESA-T
R738
10K
V1.8A
1K
P_ON/OFF
CONT
1.8V
W-A2
X
D713
VER_PROTECT
3.58/OTHER
SCL0
SDA0
STB1
PW
H_DRIVE
P_ON/OFF
VDRA+
VDRB-
PROTECT
4.5/OTHER
STB1
A_VCC
A_GND
NECK
SDA1
SCL1
19
18
17
CN002
X
Y708
0
Y709
V3
L3
Y_GND
Y_GND
PW
SDA1
SCL1
*4
L713
.22
3.3K
3.3K
C768
R745
R743
R742
R744
100
100
SDA1
SCL1
V3.3P
POWER
Audio2InL
Audio2InR
.1
C744
.01
C736
.1
C745
*8
D702
0
Y707
R739
Y728
QQR1114-001Z
GND GND
Y814 Y813
XBW
FRONT CONTROL
PWB ASS'Y
CN002
9 8 7 6 5 4 3 2 1
16
15
14
13
12
11
10
GND_INR3KEYIN
12V
ROTATION
B_MUTE
VER_PROTECT
X
X
220
10K
D711
D712
R741
R785
S_REDUCE
P00/I2SDI1
VER_PROTECT
COMB_SW_NT3.5/OTHER
V2/YL2R2
Y3/CvbsC1AudOutLsL
1
X
1
D703
C739
CH
C738
CH
.1
.1
D704
C740
C737
Y710
5.6K
10K
10K
5.6K
R716
75
R719
R717
R718
L2
R2
V2/Y
Y1/CVBS1
C1_GND
A_GND
GND
L_AOUT
A_GND
W-B2
.22
C767
VssC2
COMPONANT-PIP
*8
.1
C741
0
R768
100
C1
A_VCC
D710
C742
R_AOUT
1.8V
V1.8C2
AudOutLsR
*8
10/50
X
R769
CRT SOCKET
PWB ASS'Y
CN00T
CN00T
QJK002-083633
12V
*3
REMOTE
PW_LED
R736
100
*4
L712
REMOTE
PW_LED
PW_LED
V1.8ADC
C766
.22
VssADC
C764
.1
V3.3A2
V1.8A
C763
.22
GndA
C761
.1
RefAd
V3.3RefAdP
RefAdN
V3.3A1
C758
.22
Bout
R734
100
Gout
Rout
C757
560p
BLKIN
CH
BCL
V5P3
Gnd3
C779
10/50
B3/Pb
C752
.1
G3/Y
C751
.1
R3/Pr
INSSW3
NC
Uout/INSSW2
Yout
Ysync
Yin/G2/Y
Uin/B2/Pb
Vin/R2/Pr
V5Comb
C746
.1
VssComb
Hout
FbiSo
R726
R724
CVBSO/PIP
0
CVBSO/PIP
8V
LC701
12V
X
Y703
0
X
Y724
CVBSO/PIP_GND
A_MUTE
Y601
X
Y602
X
CP650
!
ICP-N38-Y
R778
Y_GND
D603
*3
HP_L
HP_R
X
Y702
R720
X
R721
10/50
C743
X
R770
HP_L
HP_R
B_MUTE
P_ON/OFF
V1.8A
L711
*4
C765
100/16
L710
*4
L709
*4
C762
100/16
L708
*4
C760
L707
.22
*4
C759
100/16
R735
100
R733
100
R732
1k
R731
1k
L706
D708
C756
.1
C753
.1
R730
150
R782
1.2K
R729
X
C780
.1
C750
.1
C749
.1
C748
.1
R728
R727
27K
1K
X
R722
470
R630
R631
C607
220/16
C608
220/16
*4
*3
C755
10/50
C754
.1
Y705
0
Y706
0
C747
10/50
L716
*4
100
10k
47
R725
*1
Q702
R723
470
5V
3.3K
R629
X
3.3K
D601
*3
D607
*3
Q601
*2
R608
X
R609
27K
R616
X
D341
D342
*3
D343
*3
R310
X
Q306
X
R313
X
R314
C343
X
X
Y715
QUY160-100Y
K701
QUY160-150Y
H_DRIVE
ABL
HFB
OFF_MUTE
R617
X
2.2K
R601
X
R662
2.2K
R602
1K
R603
R611
8.2K
Q602
*2
C610
10/50
R610C609
100K33/50
R623 R620
33K 10K
Q607
R622
*1
10K
R624
68K
Y301
Q305
X
X
R612
100K
DTC323TK-X
Q608
*1
R307
X
R308
X
X
R311
NCNCNC
10K
R618
Q603 Q604
R621
2.2K
R341
R342
X
C302
X
CH
R312
K301
X
DIGITAL
RIN
BINRFGND
C601
10/50X100/50
C655
R613
X
0
D344
X
C341
220/16
X301
X
CH
C303
X
C342
X
CH
R309
X
X
C304
X
C305
X
C306
X
C307
X
C308
X
ANALOG
AUDIO AMP
IC601
AN5277
LINNCB_MUTE
C602
10/50
C656
10K
R604
X
R614
100K
Q605
DTC323TK-X
C613
10/50
D602
X
X
R605
R619
R615
X
R343
0
Y716
0
NCNCNC
X
QUY160-075Y
L_OUT
Q606
Q341
*2
IC301
C603C604R606
Y603
X
X
L_R_MUTE
.22.222.2
1/2W
NC
R344
0
D345
*3
000
R315
NC
GND_B
VCC
B_OUT
STB
XX
C612 C611
X
R625
R345
Y303
BW
0
Y302
X
R320 R321
XX
R319
X
C316
X
C315
X
Q307
C314
X
X
C313
X
C312
X
C311
X
L303
X
C310
X
L302
C309
X
X
R316
R317
L301
X
BASS
R_AOUT
L_AOUT
ROUT
X
C614
C605
.22
X
C606
.22
D605
MA8300/H/-X
D604
D606
MA8300/H/-X
R607
2.2
1/2W
X
270
R626
R627
X
*5
Q609
Q610
GND GND
R318
X
W-B1
CVBSO/PIP
CVBSO/PIP_GND
OFF_MUTE
R632
1K
C661
220/16
270
R628
*5
Q611
Y009
QUY160-100Y
Y010
QUY160-150Y
Y604
BW
Y711
BW
Y719
0
Y720
QUY160-125Y
Y721
X
Y722
0
L304
X
C317
X
3.3V
NECK
PB_GND
V2/Y_GND
PR_GND
5V
12V
5V
SCL1
SDA1
PB
V2/Y
PR
GND GND
C1_GND
C1
S_V_DET
Y1/CVBS1
Y_GND
VDO_DET
L1
R1
GND
BASS
A_GND
V2/Y
V2/Y_GND
PB
PB_GND
PR
PR_GND
L2
R2
5V
V_OUT
L_OUT
R_OUT
QQR1199-001
R809
0
C809
X
Y725
X
Y815
X
K601
QUY160-150Y
K702
QQR1113-001Z
LC801
MA8091/H/-X
QQR1199-001
LC803
QQR1199-001
D753
*8
QQR1199-001
MA8091/H/-X
R808
X
KTA1267/YG/-T
Y801
Y802
D814
*8
R802
0
D801
R803
0
LC802
Y804
Y806
LC804
D803
Q801
Q805
GND
R816
R801
Y819
BW
75XX
D815
*8
Y818
0
D802
MA8091/H/-X
D810
R804
X
Y803
*8
150
D751
X
Y816
*8
0
X
Y805
R805
75
X
D811
*8
X
Y807
Y808
D806
*2
R806
Y817
D804
MA8091/H/-X
R807
100
1/2W
C802
10/50
C803
10/50
Q803
0
C804
470/16
D813
*8
R812
390
100K
R814
K107
QQR1114-001Z
Y717
QUY160-075Y
Y712
Y713
Y714
BW
Y718
GND
75
D812
*8
R815
75
QNN0349-001
82K
R811
390
R810
R813
82K
Q804
DTC323TK-X
0
0
0
X
D805
XX
DTC323TK-X
75
S-1
V-1
L-1
R-1
J805
X
J802
J802
QNN0349-002
QNN0349-002
J803
QNN0348-001
VIDEO-1
S-VIDEO
INPUT
OPEN
VIDEO-2
COMPONENT
VIDEO
INPUT
J801
QNZ0454-002
J804
OUTPUT
FRONT CONTROL
PWB ASS'Y
CN001
9 8 7 6 5 4 3 2 1
CN001
NC
NC
QGF1220C2-09
12V
ECO_IN
5V
PROT
SDA1
SCL1
5V
R796
D707
0
Q708
*2
R795 Q707
100K *1
SCL0
SDA0
L701
*4
1.8V
L702
*4
L703
*4
R792
X
8V
5V
5V
12V
L717
3.3V
*4
NECK
CONT
HFB
ABL
C707
EW
C708
100/16
EW
VDRB-
VDRA+
Q703
R779
*2
10K
C789
R780
R781
4.7K
R794
2.2K
*3
C792
.1
R790
1K
470/16
C703
C705
C706
3p
GND
.1
C711
2.2/50
10/50
C713
.022
C714
.001
C715
100
R703
.001
C716
C717
.047
/16
R706
R707
R708
100K
K104
QUY160-150Y
47/50
100K
X
C791
Q705
SSM3K02F-X
W-C2
15K
R783
R759
100
R793
W-C1
W-A1
VssP2
VssC4
C701
.22
V1.8C4
C702
.22
V3.3A3
VrefP_Sdac
CH
VrefN_Sdac
27p
.1
VrefP_Sdac
C790
C704
VrefN_Sdac
VrefP_Sdac
3p
XtalIn
CH
XtalOut
CH
X701
VssA1
R756
100
NECK
CONT
C785
.22
V5P1
C709
.01
Ph2
R701C710
12K6800p
Ph1
Gnd1
C712
.22
SecPll
Dec8G
100
R702
EW
VDRB-
VDRA+
R704
100
Vif1
Vif2
Vsc
C718
.1
Iref
R705
39K
GndIF
Sif1
Sif2
.01
C719
AGC
C720
220
.001
EHT SVM
56K
R709
C721
1M
X
D701
*3
R710
ABL
12V
CF702
X
L651
R651
X
D651
X
1.8V
P12/Int2
S_V_DET
D
S
.1
C776
VssC3
R755
1.2K
R740
15K
*4
100
.22
C775
L715
MA8039/H/-X
R777
C783
1/50
D705
V1.8C3
S_V_DET
P25/PWM4
SSM3K02F-X
3.3k
SCLO
PROTECT
G
R758
3.3K
Q706
G
D
S
R757
4.7K
SDAO
MAIN MICRO COMPUTER/
IF㨯VIDEO㨯RGB㨯SYNC㨯DEF.PROCESS
Ssif/RefIn/Avl/RefOut
L3R3L_OUT
R_OUT
DecsDem
1
1
X
C723
C724
R711
5.6K
10K
5.6K
R712
R713
R3
L3
X
R652
X
Y012 Y011 Y726 Y727 Y723
QUY160-100Y
GND GND GND
QssO/AmO/AudeEm
3300p
C727
.1
C725
10K
R714
L_OUT
X
C651
10/50
C726
R_OUT
Q701
X
C722Y701
X
CF701
X
R653
X
R654
X
R655
X
X
R656
X
BW X X X
R776
D709
VssC1+P1
Gnd2
R715
C728
C652
VDO_DET
15K
*3
VDO_DET
PllIf
390
.1
IC651
X
KEYIN
220
R754
C729
2.2/50
R663
R664
X
1.8V
R753
1.2K
0
.1
2.2/50
L714
C774
C773
0
Y704
R752
V1.8C1
KEY_IN
DecV1V8
SifAgc
IfVo/FmRo/DvbONCV8AudioSwitches
*4
220/50
L704
C730
8V
R766
X
R767
X
C657
X
X
NN
X
R658R657 R659
X
X
ECO_IN
.22
C772
1K
R751
100
ECO_IN
C732
2.2/50
.1
C731
C658
X
X
C660
X
PW_LED
REMOTE
PROT
A_MUTE
4.5/OTHER
D714
MA8030/H/-X
X
C771
X.1
R750 C770
1K
R749
PROT
4.5/OTHER
AgcSsif
V5P2
10/50
*4
X
C733
C786
L705
5V
5V
C659
X
R660
XX
GND GND
QGF1220C2-19
5V
ROTATION
3.58/OTHER
.1
2.7K
R748
C769
10K
R784
100
1K
10k
R747
R771
R746
A_MUTE
ROTATION
3.58/OTHER
IC701
V_OUTL1R1V3C4
1
1
C781
C782
.1
C735
.1
10K
10K
5.6K
5.6K
C734
R774
R775
R772
R773
R1
L1
V3
V_OUT
HP_R
HP_L
IC651
X
C654
X
C653
X
R661
(No.YA183)2-5 2-6(No.YA183)
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