JVC AV-20N43 User manual

No. 52036
Aug. 2002
AV-21D43
AV-20N43
AV-14F43
1COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD.
AV-21D43/BK
AV-20N43/BK
AV-14F43/BK
CONTENTS
!SPECIFICATIONS ････････････････････････････････
････････････････････････････････････････････････････････････････
･････････････････････････････････････････････････････････････
･･････････････････････････････････････････････････････････
･････････････････････････････ 2
!SAFETY PRECAUTIONS ････････････････････････････････
････････････････････････････････････････････････････････････････
･･･････････････････････････････････････････････････････
･･････････････････････････････････････････････
･･･････････････････････ 3
!FEATURES････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････････････････････････････････････
･･･････････････････････････････････
･･････
･･･ 4
!FUNCTIONS ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････････････････････････････････････
･･････････････････････････････････
････
･･ 5
!MAIN DIFFERENCE LIST ････････････････････････････････
････････････････････････････････････････････････････････････････
･･･････････････････････････････････････････････････････
･･････････････････････････････････････････････
･･･････････････････････ 7
!SPECIFIC SERVICE INSTRUCTIONS ････････････････････････････････
････････････････････････････････････････････････････････････････
･････････････････････････････････････････････
･･････････････････････････
･････････････ 8
!SERVICE ADJUSTMENTS ････････････････････････････････
････････････････････････････････････････････････････････････････
･････････････････････････････････････････････････････
･･････････････････････････････････････････
･････････････････････ 19
!PARTS LIST ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････････････････････････････････････
･････････････････････････････････
･･
･37
★OPERATING INSTRUCTIONS
★STANDARD CIRCUIT DIAGRAM ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････････････････････
････････････････････････････････
････････････････ 2-1
SERVICE MANUAL
COLOUR TELEVISION
BASIC CHASSIS
CG
[ RM-C368GY ]
[ AV-14F43/BK ] [ AV-20N43/BK ] [ AV-21D43/BK ]

1
No.52036
AV-21D43
AV-20N43
AV-14F43
AV-21D43
AV-20N43
AV-14F43
STANDARD CIRCUIT DIAGRAM
AV-21D43/BK
AV-20N43/BK
AV-14F43/BK
NOTE ON USING CIRCUIT DIAGRAMS
1.SAFETY
The components identified by the symbol and shading are
critical for safety. For continued safety replace safety critical
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 oftester :DC 20k /V
(4)Oscilloscope sweeping time :H 20µS/div
:V 5mS/div
:Others Sweeping time is
specified
(5)Voltage values :All DC voltage values
Since the voltage values of signal circuit vary to some extent
according to adjustments, use them as reference values.
3.INDICATION OF PARTS SYMBOL [EXAMPLE]
In the PW board :R1209 R209
4.INDICATIONS ON THE CIRCUIT DIAGRAM
(1)Resistors
Resistance value
No unit :[ ]
K:[K ]
M
Rated allowable power
No indication :1/ 16 [W]
Others :As specified
Type
No indication :Carbon resistor
OMR :Oxide metal film resistor
MFR :Metal film resistor
MPR :Metal plate resistor
UNFR :Uninflammable resistor
FR :Fusible resistor
Composition resistor 1/2 [W] is specified as 1/2S or Comp.
(2)Capacitors
: Original setting position
when shipped
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 theabove
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 theaboveprecaution isnot 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.
Type
MM :Metalized mylar capacitor
PP :Polypropylene capacitor
MPP :Metalized polypropylene capacitor
MF :Metalized film capacitor
TF :Thin film capacitor
BP :Bipolar electrolytic capacitor
TAN :Tantalum capacitor
(3)Coils
No unit :[µH]
Others :As specified
(4)Power Supply
:B1
:9V :5V
Respective voltage values are indicated
(5)Test point
:Test point :Only test point display
(6)Connecting method
:Connector :Wrapping or soldering
:Receptacle
(7)Ground symbol
:LIVE side ground
:ISOLATED(NEUTRAL) side ground
:EARTH ground
:DIGITAL ground
:[M ]
Capacitance value
1 or higher :[pF]
less than 1 :[µF]
Withstand voltage
No indication :DC50[V]
Others :DC withstand voltage [V]
AC indicated :AC withstand voltage [V]
Electrolytic Capacitors
47/50[Example]:Capacitance value [µF]/withstand voltage[V]
No indication :Ceramic capacitor
:B2 (12V)
Aug. 2002 No. 520362-16

AV-21D43
AV-20N43
AV-14F43
No.52036No.52036
AV-21D43
AV-20N43
AV-14F43
2
2-2
CONTENTS
SEMICONDUCTOR SHAPES 2-2
BLOCK DIAGRAM 2-3
CIRCUIT DIAGRAMS
MAIN PWB CIRCUIT DIAGRAM
2-5
PATTERN DIAGRAMS
MAIN PWB PATTERN
2-13
SEMICONDUCTOR SHAPES
TRANSISTOR
BOTTOMVIEW FRONT VIEW TOPVIEW
CHIP TR
IC BOTTOMVIEW FRONTVIEW TOPVIEW
CHIP IC
TOPVIEW
1 N
N
1
OUT
E
IN
IN OUTE
1 N
N
1
N
N
N
1
N
E
C
B
ECB
C
BE
BCE
(G)(D)(S )
ECB
ECB
CRT SOCKET PWB PATTERN
2-15
B
E1
G1
GK RK
G2
G2
RK
G1
BK
HE
H
H
HE
BK
G1
GK
1
4
E
UMARK
C
NEAMX5 94V-0
SCREEN
Q351
Q352
Q353
R364
R369
R360
R361
R362
C357
L351
L354
55
R3
R356
R359
R366
C354
TP-E
SK351
R351
W270
R346
W338
R349
TP-47B
D352
D351
D356
51
MARKT
TP-47G/R
TP-47R/G
E
E
C
B
C
B
\402/2\41
CKF1349-EH2-1
W337
R363
R365
C352
C351
52
L3
L353
K351
W336
353
R
R354
R357
R358
R367
R368
C355
C356
R352
R345
R347
R348
W576
D353
D354D355
TOP
CRT SOCKET PWB PATTERN
2-15

No.52036 No.52036
3
AV-21D43
AV-20N43
AV-14F43
AV-21D43
AV-20N43
AV-14F43
Q102
IF AMP SF102
VIDEO
AUDIO
IC701
MICRO COMPUTER
IC301
1 CHIP DECODER
RGB 10.11.12
29
30
36
24
MAIN PWB
IC702
MEMORY IC703
5V REG & RESET
IC651
AUDIO AMP
SP
AUDIO
3
8
SF122
SCL/SDA
IC421
VERT.OUT
Q522
H.OUT
DY(V)
DY(H)
DEF.YOKE
H.OUT V.OUT
H.OUT
V.OUT
42 46
SCL
SDA
POWER SW
IN
OUT
AC IN
HEAD
PHONE
F901
SAW QSS
IN
TU001
TUNER
IF
D901
LF901
IC921
RECT
POWER
REG.
R / G /B
V01
CRT
CRT SOCKET PWB
RGB
DRV
REMOCON
KEY
IND.
VIDEO
AUDIO
T522
HVT
FOCUS
SCREEN
EHV
18.19 21
37.38
VIDEO
IN VIDEO
OUT AUDIO
IN
AUDIO
OUT
SCL
SDA
SP
OUT
VIDEO
AUDIO
REAR
FRONT
IN
B1
T921
SW
TRANSF.
IC971
5V REG.
9V REG.
5V REG.
9V REG.
ECO
2-3 2-4
BLOCK DIAGRAM

4
No.52036 No.52036
AV-21D43
AV-20N43
AV-14F43
AV-21D43
AV-20N43
AV-14F43
2-5 2-6
CIRCUIT DIAGRAMS MAIN PWB CIRCUIT DIAGRAMS (1/2) [AV-21D43/BK, AV-20N43/BK]
!
!
!
!
.033
C721
4.7k
R714
2.2k
R771
180p
CH
C729
4.7k
R720
X
C731
BW
K704
1/50
C719
5.6
QQL244J-5R6Z
L701
BW
Y705
L-132XID-T16
D704
1.2k
R773
SLR-342MG-T16
D705
33p
CH
C714
820
R772
*4
D706
82k
R736
22k
R748
.01
C712
10k
R721 4.7k R726
.01
C713
X
C736
X
C735
X
C734
10k
R730
1k
R728
100k
R737
X
C733
*1
Q703
XC732 22/50
C738 BW
K703
1k
R719
100/16
C710 *1
Q702
S704S701
.01
C709
PIC-28143SY
IC704
OUT
Vcc
GND
S702 S703
SI-5003X-X
IC652
15k
R727
S705
BW
K701180p
CH
C717
1k
R729
4.7k
R731
4.7k
R709
4.7k
R710
4.7k
R711
FCR12.0M2S
X701
560
R706
56p
C724
100p CH
C722
10k
R738
10k
R739
560
R707
560
R718
1k
R725
4.7k
R713
4.7k
R712
220
R704
220
R705
180pCH
C716
220
R715
220
R716
56k
R742
*
IC701
X
C737
X
C725
X
C726
.01
C720
.01
C718
0
Y704
33p
CH
C715
.01
C711
X
R734
1k
R708
X
R722
X
Y001
.1 TF
C005
QAX0694-001Z
CF162
IC702
180p
CH
C728
.01
C730
*4
D707
L78LR05E-MA
IC703
X
Q704
0
R747
X
C727
47/25
C708
.01
C706 .01 C707
X
Q701
5.6k
R701
6.8K
R702
X
R846
*4
D701
BW
Y002
470/16
C705
10/50
C701
X
R717
10k
R746
ECO SENSOR
P1241-04
PC701
x
Y301
X
IC371
X
R830
X
L821
X
C837
X
C836
X
C371
X
R841
X
R845
X
R843
X
R842
X
R844
X
R839
X
C831
X
C828
X
R828
X
C838
0
Y373
X
INVERTER
Q825
X
C822
X
X821
X
C823
X
R832
X
C830 4.7M
R327
X
IC821
BW
Y371
0
Y372
X
R829
X
C827
X
R825
X
C849
X
R838
X
INVERTER
Q822
X
C834
X
INVERTER
Q824
X
R836
X
R837
X
R750
4.7k
R749
BWY654
X
C826
X
R827
X
C825
X
R835
X
R831
X
C832
X
C824
X
R834
X
C835
X
R840
X
C829
X
R833
X
C833
X
INVERTER
Q821
180
1/2W
R815
CEMN065-001
J003
QNN0384-001
J002
CEMN065-002
J004
*3
Q708
270
1/2W
R806
3.9k
R740
560
R741
*4
D731
10/50
C811
220R811
220/16
C805
X
C812
*1
Q804
68
R807
75
R802
X
R847
4.7k
R817
2SC1815/YG/-T
Q803
470/16
C806
680R816
*2
Q709
220R301
4.7k
R302
100
R303
10/50
C341
.01
C306
.47 TF
C30410p CH
C303
1/50
N
BP
C367
390R120
*4
D341
.47/50
C305
8.2
QQL244K-8R2Z
L103
BW
C741
220
R121
.47/50
C119
X
CN001
10/50
C324
.01
C311
100/16
C315
*1
Q302
120p
CH
C120
.01
C314
1k
R314
47/50C501
0
R502
1.2k
R307
10/50C503 .01C502
10/50
C316
10k
R401
.047
C317
0
R312
IF
BTPS(32)
AGC
BT
AS
SCL
SDA
BM
5V
LOCK
NC
NC
QAU0186-002
TU001
.47/50
C323
1k
R161
X
R376
220pCH
C310
100 1/2WR501
XD793
*2
Q301
1K
R313
.1
C166
1.5k
R321
XL104
BWY653
XY655
10k
R796
.01C744
X
R160
X
C847
X
R745
XR848
X
C843
CE41651-001Z
X302
12p
CH
C321
2.7k
R322.027
C322
10k
R323
X
R325
1k
R324
*5
D301
0
Y302
100
R326
*5
D302
.01
C161
QAX0694-001Z
CF161
EF801
100
R304
100
R305
3.3k
R341
X
C845
X
C844 X
C846
X
C821
220
R664
10k
R665
X
C848
X
R849
*3
Q710
*
C162
15k
R797
*4
D342
.47 TFC401
3.3/50
C313
XY976
X
Y975
X
Y160
470/16
C307
.012
C301
X
R158
X
J006
QAX0325-001
SF122
X
SF101
NN5198K
IC301
.01
C121
.01
C122
X
D795
QAX0705-001Z
X301
1/50
N
BP
C366
1.8k
R308
.01
C309 6.8k
R503
100/16
C308
1/50
N
BP
C365
4.7/50
C302
10R103
CHGC05-340-G
CN00T
47/25
C112
.0047
C113
220p5%
C326
.01
C115
.01
C116
.22
TF
C117
180k
R159
X
D794
XD791
XD792
220R791 220R792 220R793 220R794 220R795
220
R306
X
CN00C
1SR124-400A-T2
D306
.1
TF
C402
X
C109 X
C108
BW
D102
2SC5083/L-P/-T
Q102
X
R116
220/16
QETM1CM-227
C504
180
R111
X
R115
X
R117
.0047
C105
X
C111
QQLZ014-2R2
L101
100
R113
0
C110
X
R114 6.8k R109
.0047
C106
2.7k
R110
47/25
C103
.0047
C107
X
CF102
.0047
C104
X
CF103
10
R112
X
R118
X
Q103
8.2
QQL244K-8R2Z
L001
.01
C164
X
L002
220
R002
X
C007
MA3330/L/-X
D001 10/50
C001
.01
C002
56K
R004
220R003
X
C003
*9
K001
4.7/50
C008
X
C006
470/10
C004
2.2KR163
27
QRZ9023-270
!
R723
.47/50
N
BP
C312
*1
Q655
LA4287
IC651
QGA2501C5-04Z
CN10S
1/50
QTNC1HM-105Z
C651
X
NC
CN00S
MTZJ18A-T2
D653
X
N
C163
*
R652
SCG
-1434A
4.7
QRX029J-4R7
R654
1
1/2W
R653
2200/25
QEHQ1VM-228
C655
*
C653
.1
C654
470/25
H
C656 10/50
H
C652
BW
C742
1k
R658
10/50
H
C663
BW
C743
1k
R659
10k
R660
SCG
-1435A
BW
Y652
1/50
QEHR1HM-105Z
C665
X
C839
10k
R651
12K
R656
390
R657
DTC323TK-X
Q652
X
Q653
100/16
C659
*4
D652 *4 D651
22/50
C658
*2
Q651
56 1W OMR
QRG01GJ-560
R810
*1
Q654
0
Y374
X
Ys SW
Q372 0R372
X
Ys SW
Q371
6.8k
R374
ABL
9V
V_SYNC
H_OUT
H_VCC
FBP
V_OUT
A.PROT
P_ON/OFF
X_RAY
5V
A_VCC
A_GND
STB_PW
ODD/EVEN
32V
X
R332
X
R333
X
C334
X
L331
X
N
C335
XR375
QNS0165-001
J005
XR385
X
R378
75
R102
X
R373
*
C162 NCB31HK
-681X
R652
C653
NCB31HK
-152X
NRSA02J
-821X
1.2k
R162
220
R164
22
R165 *1
Q161
820
R166 .01 C165
1500p
C841
QFV71HJ
-474Z
RB100A-T2
D305
X
C842
BW
CP
CP701
NRSA02J
-102X
-106Z
QEHR1HM
QAX0666-002
SF102
10/50
N
BP
C325
X
R381
X
R377 X R380
XR382
XR379 XD373
X
Q373
X
D372
XR383
X
R384
.1
C664
270
1/2W
R662
270
1/2W
R661
3.9k
R703
IC701 MN18732
87JM 87JM
MN18732
X
IC001
X
R001
X
C009
BW
Y003
A_MUTE
VOL
I/II
AFT
SDA1
BUS_FREE
SCL1
SDA2
SCL2
A_VCC
AUDIO
LINE_V
OSD_R
OSD_G
OSD_B
TEXT_R
FBP
X_RAY
TEXT_G
TEXT_B
TEXT_YS
BO
A.PROT
3.58/OTH
P_ON/OFF
V_OUT
VIDEO
LINE_A
TCL
ODD/EVEN
TEXT_R
TEXT_G
TEXT_B
TDA
OSD_B
LINE_V
OSD_R
TEXT_YS
RO
ODD/EVEN
GO
TEXT/OTH
TCL
TEXT/OTH
A_GND
A.PROT
OSD_G
SDA1
A_MUTE
SCL1
V_OUT
SDA1
V_SYNC
VIDEO
SCL1
BO
A_MUTE
GO
RO
OSD_YS
LINE_A
FBP
PIC_MUTE
A_VCC
H_VCC
PIC_MUTE
H_OUT
V_SYNC
FBP
AFT
A.PROT
P_ON/OFF
X_RAY
TEXT/OTH
SDA2
BUS_FREE
STB_PW
SCL2
TRESET
A_GND
STB_PW
LINE_V
H_OUT
P_ON/OFF
AUDIO
3.58/OTH
STB_PW
I/II
VOL
TRESET
TDA
OSD_YS
MENU IR DETECT UNIT
VOL+ VOL- CH+ CH-
AUDIO
SDA
SCL
NP
VDD A0
A1
A2
VSS
PROTECT
P_ON/OFF
LOCK
3.58/OTH
4.5/OTH
H_SYNC
TV/V
TDA
A_MUTE
ALCON/OFF
VOL
TEXT
I/II
TEXT/OTH
NC
OSD_Ys
OSD_B
OSD_G
OSD_R
RST
GND
LED[TIM]
LED[POW]
AFT
V_SYNC
TCLOCK
ECOIN
NC
SDA1
SCL1
VDD
OSC1SCL2
BUS_FREE
KEY1
KEY2
OSC2
VSSREMOCON
SDA2
IN
CD
GND
RESET
5VOUT
*
5V REG&RESET
R1 R2
BUS_FREE
SCL2
SDA2
SCL1
SDA1
NC
NC
ODD/
RESET
EXT1/OTH
M.ENABLE
VSS
VDD
C0R
OSD_Ys
OSD_B
OSD_G
OSD_R
VS
HS
AV-20
NC
TVA_MUTE
TCLOCK
TDATA
TEXT/OTH
NC
XTAL1
XTAL2
RST
A_MUTE
VOL
L/OTH1
L/OTH2
L.VL/OTH
GND
VDD
REMOCON
VSS
KEY1
KEY2
SLOW
AFT
CVBS
IREF
VDDA
NC
NC
FIL3
VSSA
LOCK
G1 GO G2 INH VEE VSS
CB
EVEN
AB2B1BOROVDD
V_IN
A_IN
V_OUT
A_OUT
V_IN A_IN
R
G
B
GND
9V
*1:
*2:
*3:
*4:
*5:
2SD601A/QR/-X
2SB709A/QR/-X
UN2212-X
MA111-X
MA3091/M/-X
N43-BK
NC
DIFFERENCE LIST (*PARTS)
A2
GND
TV.A
I/II
GND
TV.M
GND
SIF
GND
9V
*6: MA3120/M/-X
MA3056/M/-X*7:
QQR0621-002Z*9: UN2211-X*8:
NOTE
VPP
SCL
C.APC1
ABCL
EXTYs
EXTR
EXTG
EXTB
VCJVcc(9V)
R_OUT
G_OUT
B_OUT
VCJGND
4.43MHZ
SECAM
SECAM
PLL
BELL
ref
ref
SP01 AV-21
A_IN
V/SIF Vcc(9V)
SAW
SAW
V/SIF GND
QSS_IN
RFAGCout
AFToout
V/C IN
IF_AGC
VAPCQDetout
SIF_IN
AUDIO_IN
AUDIO_OUT
BlackLevel
De-emphasis
CHROMAVcc(9V)
VIFDetout
Vcc[5V]
VIDEO_OUT
C.APC2
Y/Vsync_IN
Hsync_IN
3.58MHz
HVcc
Hout
HAFC1
Decoupling
SAWTooth
Vout
Ver.AGC
VDD[5V]
SCP
VSS
SDA
FBP
21D43-BK
IC301IC301IC301 12
POWER
TIMER
HEADPHONE
R501
R792
1110
3Vp-p
FRONT
REAR
S701-S705 QSW0619-003Z
3Vp-p3Vp-p (H)
D43-BK
20N43-BK
0.2V 5V 0V 0.3V 0.3V 0.2V 2.5V 0V 5V 3.1V 4V 5V 5V
5V5V5V 5V 5V
0V
0V
0V
0V 0V 0V0V 0V
4.8V 4.8V 4.5V
2.4V2.4V0.2V 4V 5V 4.8V 5V 4.4V 4.4V
NC NCNC
NC
NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC
NCNCNCNCNCNCNCNCNC
0V 0V 0V 0V
0V
5V 2.4V
0V 0V 0V 0V 0V 0.2V 0.8V 5V 5V 5V0V 2.5V 2.5V
2.6V 5V 2.5V 5V
5V1.5V3V
1.3V 1.3V 1.3V 1.3V 1.3V
1.3V1.3V1.3V1.3V 3.3V3.3V3.3V
0V 0V 0V
5V
0V 5V 5V
4.8V
4.8V
5V
0V
0V
0V
0V
0V
10.7V 5.9V 0V 5V 5V
23.4V 11.3V 0V 0V 0V 6.3V6.3V0.1V11.1V11.2V
23.5V
23.5V
0V
0V
23.6V
23.6V
4.3V
NC
0V 0V 0V 0V
0V
5V 5V 5V
5V
3.3V 3.3V 3.3V 3.3V 3.3V4.4V 6.4V 9V 2.7V 2.7V4V 4.2V
4.2V
9V 2.8V 2.8V 3.2V 5.8V 3.1V 3.6V
3.7V4.4V 4.1V 4.1V4.1V4.1V4.1V4.4V 9VNC4.7V4.1V0.5V4.3V2.6V6.3V1.5V3.7V1.2V3.1V5.4VNC0.7V
9V
1.4V
2.2V
5V
0V
0V
0.2V
0.2V
0V
8.2V
4V 4.7V
9V 9V
0V
0V 0V
0V
0.3V
0.9V
0V
0V 11.4V
11.4V
0V
0V
0V
0V
5V
5V
0V
0V
34.5V
5V
(H)
4.4V
4.4V
3.2V
0V
0V
0V 0V
4.7V
4V
(H)
SP01
IC701 IC701
35
R793
R794
R795
R791
C502
C503
C501
27
5Vp-p 5Vp-p(VER) (HOR)
IC301IC301 36 38
2.8Vp-p 2.8Vp-p (H)(H)
CEBSS12
AT24C08-21D43BK
SCG-1434A (AV-20N43/BK)
D-07KJ2 QQD0086
SCG-1435A (AV-21D43/BK)
-001
MAIN PWB (1/2)
*
OR OR
QNN0281-003 QNN0281-002
AV-21D43
AV-20N43
AV-21D43
AV-20N43

No.52036 No.52036
5
AV-21D43
AV-20N43
AV-14F43
AV-21D43
AV-20N43
AV-14F43
330/25
QTMN1EM-337Z
C526
BA51W12ST-V5
IC971
X
C975
1000/35
QETM1VM-108
C552
H_VCC
82k
R430
SW_TRANSF
QQS0050-001
! T921
9V
A_GND
2SA1208/ST/Z1-T
Q571
X
C944
1000/16 H
C945
100/16
C979
SCREEN
82
R524
47/35
C523
TP-47R
QQL342J-2R2Z
L523
X
L522
BW
Y501
*4
D982
*
C582
8.2M
QRZ0057-825
!R991
27
1/2W
R526
10k
R429
.47
C928
BW
Y502
100
R359
U
CN00U
1/50
C976
470/16
C977
220/16
C978
250VAC
QCZ9079-471
!C992
2.7k
R453
*
FBT
!
T522
G2SBA60
D901
*4
D924
68k 2WOMR
QRL02EJ-683X
R903
EG1A-T3
D930
100/10
C571
ERZV10V621CS
QAF0052-621
!VA901
DTC124ESA-T
Q401
1
1/2W
R443
QQR0527-002
!
LF901
X
C432
X
R904 BW
Y905
22
1/2W
R933
CNDEG
2.2k
R926
12k
2WOMR
R365
82k
R436
X
C947
G-OUT
STC344-T
Q352
2kV
QCZ0325-151
C931
56k
3WOMR
QRL03EJ-563X
R928
BW
L353
1.8k
R368
330
R356
*4
D425
QCZ0122-561
C930
RGP10J-TS-T3
D921
1k
R976
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D427
100/35
C924
10/50
C429 X
C431
BW
Y904
SCG
-1434A
BW
L352
12k
2WOMR
R364
1.5k
QRZ0107-152Z
R362
150
R351
12k
2WOMR
R363
SCG
-1435A
X
R566
4.7/250
C528
*1
Q402
R-OUT
STC344-T
Q351
100
R357
330p
CH C356
B-OUT
STC344-T
Q353
1.8k
R367
1.8k
R366
T
CN10T
BW
L354
*4
D922
BW
L351
270p
CH C354
330
R355
330
R354
680
1/2W
R921
1.5k
QRZ0107-152Z
R361
1.5k
QRZ0107-152Z
R360
470/10
C357
220p
CH C355
CE42446-001
! SK351
CE42446-001
!
!
!
!
!
!
!
!
SK351
X
R434
*
*8
K922
FOCUS
470P
470P
250VAC
QCZ9079-471
!
!
C991
TP-E
150
R353
150
R352
X
R369
100
R358
1.2k
R421
100/35
QEHR1VM-107Z
C428
TP-47G
QGZ5003C1-04
CN0HV
QGA2501C5-05Z
CN0S1
4.7/50
QEHR1HM-475Z
C433
BWY553
330
R423
2SA966/OY/-T
Q974
1/50
C422 470
R425
0
R426
V.OUTAN5539-LF
IC421
8.2k
R441
X
C421
X
RY971
3.9k
R577
QQR0582-001Z
K421
100/35
C427
MA3360/M/-X
D422
22k
1/2W
R576
2.2k
1/2W
R571
SE115N-LF12
ERROR AMP
IC941
33k
R934
PC123F2
!PC921
.002
C351
*8
K921
560k
1/2W
R932
.022
QFP32GJ-223Z
C929
.0022
C904
.0033
MY C926
.0022
QCZ9078-222
QCZ9078-222
QCZ9078-222
C907
ICP-N75-Y
!
CP
CP982
BW
1/4WFR
R952
QQL26AK-820Z
L943
*8
K941 100/160
QEZ0420-107
C942
1.2k
R942
RGP10J-TS-T3
D943
RU3YX-LFC4
D942
470/16
C946
5WMFR
QRM059J-R22
R923
*4
D923
250VAC 1000P
QCZ9079-102
!C993
X
C923
MA3075/H/-X
D945
POWER REGULATOR
STR-G6653
IC921
*1
Q941
47k
R943 UN2211-X
Q943
10k
R944
.1
C950
82
QQL26AK-820Z
L941
8.2k
1/2W
R929
MA3056/M/-X
D926
3.9
QRF104K-3R9
R901
.0047
C430
82
QQL26AK-820Z
L942
X
D931
X
Q404
X
R439
X
R438
820
1/2W
R941
C525
X
R437
10K
R578
.0022
C905
QFZ0200
-962
4.7/250
C554
1.2k
R422
QFZ0200
-103
2.2k
R974
22/50
C971
0
Y972
X
Y973
*3
Q975
NCB21HK-103X
R532
*4
D983
BW
Y902
470p
MY
C922
X
R984
X
R982
X
R981
1.2
2WMFR
R922
MA3068/M/-X
D927
X
R983
X
D985
X
D986
*1
Q572
X
C981
X
Q981
X
Q982
.001
C426
*4
D554
C527
MA3200/M/-X
D581
100
R424
39K
R583
560p 2kV
QCZ0122-561
C941
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D929
*8
K942
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A_VCC
*
R582
X
Q403
ICP-N75-Y
!
CP
CP981
POWER CORD
QRJ146J-2R2X
R552
.1 1W
QRZ9011-1R0
!
R551
5V
X
C553
X_RAY
*5
D553
10k
R442
MFAC275V
QFZ9075-104
QFZ9040-104
!
C901
1.8K
1/2W
R581
X
FR
FR556
STB_PW
A.PROT
QAD0119-9R0
TH901
POWER SW
QSW0750-001
!S901
T3.15AH
QMF51E2-3R15J4
!F901
QFZ0199
-274
2.7
1/2W
R432
QEZ0199-127
QEZ0476-127
C909
QFZ0199
-224
2.7
1/2W
R433
BW
R584
H.OUT
2SC5388-CA
Q522
*
C527
X
R985
*
C525
X
D973
X
Q973 X
R986
X
R987
47/25
FBT PROTECTOR
C572
*4
D424
.33
QFV71HJ-334Z
C436
1SR124-400A-T2
D423
BW
Y903
X
D925
X
C561
X
D928
10k
2WOMR
QRL02EJ-103X
R980
X
1/2W
R935
X
C921
U
CN00U
X
D946
680
R521
X
R945
X
D947
X
R529
0
Y941
10k
R522
QQR1114-001Z
K923
X
Y946
.1/100
MY
C555
0Y945
RH1S-T3
D552
.01/100
C424
XY944
QGAB801C1-02
PW
CN0PW
X
R953
X
R957
X
R959
RGP10J-TS-T3
D582
X
R955
X
R954
X
R951
2SK3065-W
Q521
D
GS
X
R956
X
R958
X
C951
X
C954
.1
TF
C581
RU3AM-LFC4
D941
22k
1/2W
R530
X
C953
470p
CH
C949
*
R554
X
C952
ABL
X
Q942
X
Q951
V_OUT
X
D562
V_SYNC
FBP
32V
X
D950
*
L551
X
D561
100/160
QEZ0203-107
C531
X
R565
X
D954
MA3075/M/-X
D571
X
D955
X
C562
X
C352
X
D956
470
1/2W
R440
X
D951
0
Y942
BW
Y943
XR572
250VAC
MF
QFZ9075-473
QFZ9040-473
!C910
*8
K943
X
D903
X
D960
XR575
1SR124-400A-T2
D555
0
Y921
H_OUT
NRSA02J
-103X
10k
R431
QRE121J
-821Y
2200/25
C435
X
Y503
C582 QFZ0199
-224 QFZ0199 -224
RGP10J-TS-T3
D551
L551
X
C530
R531
R554
X
R528
82
R525
BW
D902
1.5
QRT02EJ-1R5X
R573
XD584
R582
T522
X
D351
G
B
R
1.5
QRT02EJ-1R5X
R574
X
D352
*8
K924
QCZ0325-151
C932
RD27E/B2/-T5
D933
*4
D932
560
QRG01GJ-561
R936
MA3360/M/-X
D421
QQLZ034
-500
NRSA02J
-472X
QRE121J
-681Y
NRSA02J
-273X
QQH0073
-001
X
R585
NRSA02J
-223X
QQH0069
-001
TP-47B
QQLZ034
-430
3.3k
R534
3.3k
R533
*
R531
*1
Q524 *1
Q523
18p
C423
1.2k
1/2W
R977 X
D949
47k
R978
X
D974 X
R988
1.2
2WOMR
R979
QQR0621-002Z
K351
3.9k
R347
X
R348
4.7k
R349
X
R345
XR346
X
D353
X
C972
X
D354
X
D355X
D356
A_VCC
V_OUT
V_SYNC
26V
*5
0V
*
LIVE
DRIVE
*
*6 : :
*7 :
MA3091/M/-X
MA3120/M/-X
*4 :
MA3051/M/-X
G
R
B
GND
NC
ON
ISOLATED
OSC
TSD
OVP
GND
Vcc
CRT
NC
(AC120~240V)
SCREEN
FOCUS
EHV
X_RAY1
E1
STB
GND Vcc
GND
V01
(1/2)
S1
PUMP UP
GK
QGZ5003C1-02
*8 :
*
QQR1113-001Z
OR
L01
RK
AV-20
THERMAL
DIFFERENCE LIST (*PARTS)
AV-21
()
PROTECTION
LIVE ISOLATED
(())
MAIN PWB
(2/2)
V.DY H.DY
X_RAY2
V01
CRT SOCKET PWB
(Whith in MAIN PWB)
9V
HB
GND
HEATER
TP_E
21D43/BK
BK
20N43/BK
H
9V
G1
G2
G3
VCC GND 5V CTL
NC
TP_B1
N43/BK
Q351
X-RAY PROTECTOR
FOR TEST
DY01
Q352 Q353
2.4V
2.6V
125.7V
3.3V
2.8V
125.6V
2.8V
3.3V122.7V
A48LSD
1.2V
18.7V
0V
DY01
OKNG
MA111-X
0.05V
143.5V
18.7V
4.9V
CHGC04-400-G
D43/BK
095X
11.4V
10.4V
0V
B1
(
4.3V
0V
0V
*1
*2
*3
2SD601A/QR/-X
2SB709A/QR/-X
UN2212-X
:
:
X NON MOUNT
(OPTION)
BUS WIREBW
NOTE
:
:
:
)
3.4V
9.9V
114.9V
0V
0V
5V 0V 114.5V
114.8V
9V
10.5V
5V
4.2V
0V
11.3V
11.4V
10.7V
0.1V
0V
3.9V
0V
14.4V
25V
38V
38V
24.7V
1.3V
0.7V
0V
91.8V
2.3V
0V
3.6V
3.8V
0V
0.4V
0V
0.5V
5V
0V 0V
0V
0V 5.4V
1000Vp-p 50Vp-p 250Vp-p
30Vp-p 240Vp-p
(H) (H) (H)
(H)
T522T522
T522T522T522 1 3 5
79
(H)
A51LMV
10X
C
DEG-COIL
L01
*
QQW0061 QQW0006
SCG-1434A (AV-20N43/BK)
OR QAD0121-9R0
OR QQS0056-001
CC
SCG-1435A (AV-21D43/BK)
(H)(H) (H)125Vp-p120Vp-p 132Vp-p
-001
5.5Vp-p (H)
Q521 D
8.2Vp-p
Q521 S
18.9Vp-p (H)
Q522
C931 K923
B
-001
QQD0034 CE20336
-00A-001
QMPR010-200-E2
QMPR010-200-K2
OR
OR
OR
OR
SCG-1434A (AV-20N43/BK)
SCG-1435A (AV-21D43/BK)
TP-B1
TP-E
2-7 2-8
MAIN PWB CIRCUIT DIAGRAM (2/2) [AV-21D43/BK, AV-20N43/BK]
AV-21D43
AV-20N43
AV-21D43
AV-20N43

6
No.52036 No.52036
AV-21D43
AV-20N43
AV-14F43
AV-21D43
AV-20N43
AV-14F43
!
!
!
.033
C721
4.7k
R714
2.2k
R771
180p
CH
C729
4.7k
R720
X
C731
BW
K704
1/50
C719
5.6
QQL244J-5R6Z
L701
BW
Y705
L-132XID-T16
D704
1.2k
R773
SLR-342MG-T16
D705
33p
CH
C714
820
R772
*4
D706
82k
R736
10k
R748
.01
C712
10k
R721 4.7k R726
.01
C713
X
C736
X
C735
X
C734
10k
R730
1k
R728
100k
R737
X
C733
*1
Q703
XC732 22/50
C738 BW
K703
1k
R719
100/16
C710 *1
Q702
S704S701
.01
C709
PIC-28143SY
IC704
OUT
Vcc
GND
S702 S703
SI-5003X-X
IC652
15k
R727
S705
BW
K701180p
CH
C717
1k
R729
4.7k
R731
4.7k
R709
4.7k
R710
4.7k
R711
FCR12.0M2S
X701
560
R706
X
C724
100p CH
C722
10k
R738
10k
R739
560
R707
560
R718
1k
R725
4.7k
R713
4.7k
R712
220
R704
220
R705
180pCH
C716
220
R715
220
R716
56k
R742
MN1873287JM
IC701
X
C737
X
C725
X
C726
.01
C720
.01
C718
0
Y704
33p
CH
C715
.01
C711
X
R734
1k
R708
X
R722
X
Y001
.1 TF
C005
QAX0694-001Z
CF162
IC702
180p
CH
C728
.01
C730
*4
D707
L78LR05E-MA
IC703
X
Q704
0
R747
X
C727
47/25
C708
.1
C706 .01 C707
X
Q701
5.6k
R701
6.8K
R702
X
R846
*4
D701
BW
Y002
470/16
C705
10/50
C701
X
R717
10k
R746
ECO SENSOR
P1241-04
PC701
x
Y301
X
IC371
X
R830
X
L821
X
C837
X
C836
X
C371
X
R841
X
R845
X
R843
X
R842
X
R844
X
R839
X
C831
X
C828
X
R828
X
C838
0
Y373
X
INVERTER
Q825
X
C822
X
X821
X
C823
X
R832
X
C830 4.7M
R327
X
IC821
BW
Y371
0
Y372
X
R829
X
C827
X
R825
X
C849
X
R838
X
INVERTER
Q822
X
C834
X
INVERTER
Q824
X
R836
X
R837
X
R750
4.7k
R749
XY654
X
C826
X
R827
X
C825
X
R835
X
R831
X
C832
X
C824
X
R834
X
C835
X
R840
X
C829
X
R833
X
C833
X
INVERTER
Q821
180
1/2W
R815
CEMN065-001
J003
QNN0384-001
J002
CEMN065-002
J004
*3
Q708
270
1/2W
R806
3.9k
R740
560
R741
*4
D731
10/50
C811
220R811
220/16
C805
X
C812
*1
Q804
68
R807
75
R802
X
R847
4.7k
R817
2SC1815/YG/-T
Q803
470/16
C806
680R816
*2
Q709
220R301
4.7k
R302
100
R303
10/50
C341
.01
C306
.47 TF
C30410p CH
C303
1/50
N
BP
C367
390R120
*4
D341
.47/50
C305
8.2
QQL244K-8R2Z
L103
BW
C741
220
R121
.47/50
C119
X
CN001
10/50
C324
.01
C311
100/16
C315
*1
Q302
120p
CH
C120
.01
C314
1k
R314
47/50C501
0
R502
1.2k
R307
10/50C503 .01C502
10/50
C316
10k
R401
.047
C317
0
R312
IF
BTPS(32)
AGC
BT
AS
SCL
SDA
BM
5V
LOCK
NC
NC
QAU0186-002
TU001
.47/50
C323
1k
R161
X
R376
220pCH
C310
100 1/2WR501
XD793
*2
Q301
1K
R313
.1
C166
1.5k
R321
XL104
XY653
BWY655
10k
R796
.01C744
X
R160
X
C847
X
R745
XR848
X
C843
CE41651-001Z
X302
12p
CH
C321
2.7k
R322.027
C322
10k
R323
X
R325
1k
R324
*5
D301
0
Y302
100
R326
*5
D302
.01
C161
QAX0694-001Z
CF161
EF801
100
R304
100
R305
3.3k
R341
X
C845
X
C844 X
C846
X
C821
220
R664
10k
R665
X
C848
X
R849
*3
Q710
.0015
C162
15k
R797
*4
D342
.47 TFC401
3.3/50
C313
XY976
X
Y975
X
Y160
470/16
C307
.012
C301
X
R158
X
J006
QAX0325-001
SF122
X
SF101
NN5198K
IC301
.01
C121
.01
C122
X
D795
QAX0705-001Z
X301
1/50
N
BP
C366
1.8k
R308
.01
C309 6.8k
R503
100/16
C308
1/50
N
BP
C365
4.7/50
C302
10R103
CHGC05-340-G
CN00T
47/25
C112
.0047
C113
220p5%
C326
.01
C115
.01
C116
.22
TF
C117
180k
R159
X
D794
XD791
XD792
220R791 220R792 220R793 220R794 220R795
220
R306
X
CN00C
1SR124-400A-T2
D306
.1
TF
C402
X
C109 X
C108
BW
D102
2SC5083/L-P/-T
Q102
X
R116
220/16
QETM1CM-227
C504
180
R111
X
R115
X
R117
.0047
C105
X
C111
QQLZ014-2R2
L101
100
R113
0
C110
X
R114 6.8k R109
.0047
C106
2.7k
R110
47/25
C103
.0047
C107
X
CF102
.0047
C104
X
CF103
10
R112
X
R118
X
Q103
8.2
QQL244K-8R2Z
L001
.01
C164
X
L002
220
R002
X
C007
MA3330/L/-X
D001 10/50
C001
.01
C002
56K
R004
220R003
X
C003
*9
K001
4.7/50
C008
X
C006
470/10
C004
2.2KR163
27
QRZ9023-270
!
R723
.47/50
N
BP
C312
*1
Q655
LA4287
IC651
QGA2501C5-04Z
CN10S
1/50
QTNC1HM-105Z
C651
LC31017-002A
H006
X
NC
CN00S
MTZJ18A-T2
D653
X
N
C163
1k
R652
4.7
QRX029J-4R7
R654
1
1/2W
R653
2200/25
QEHQ1VM-228
C655
10/50
C653
.1
C654
470/25
H
C656 10/50
H
C652
BW
C742
1k
R658
10/50
H
C663
BW
C743
1k
R659
10k
R660
BW
Y652
1/50
QEHR1HM-105Z
C665
X
C839
10k
R651
12K
R656
390
R657
DTC323TK-X
Q652
X
Q653
100/16
C659
*4
D652 *4 D651
22/50
C658
*2
Q651
56 1W OMR
QRG01GJ-560
R810
*1
Q654
0
Y374
X
Ys SW
Q372
0
R372
X
Ys SW
Q371
6.8k
R374
ABL
9V
V_SYNC
H_OUT
H_VCC
FBP
V_OUT
A.PROT
P_ON/OFF
X_RAY
5V
A_VCC
A_GND
STB_PW
ODD/EVEN
32V
X
R332
X
R333
X
C334
X
L331
X
N
C335
X
R375
QNS0165-001
J005
X
R385
X
R378
75
R102
X
R373
1.2k
R162
220
R164
22
R165 *1
Q161
820
R166 .01 C165
1500p
C841
RB100A-T2
D305
X
C842
BW
CP
CP701
QAX0666-002
SF102
10/50
N
BP
C325
X
R381
X
R377 X R380
XR382
XR379 X D373
X
Q373
X
D372
XR383
X
R384
.1
C664
270
1/2W
R662
270
1/2W
R661
3.9k
R703
X
IC001
X
R001
X
C009
BW
Y003
A_MUTE
VOL
I/II
AFT
SDA1
BUS_FREE
SCL1
SDA2
SCL2
A_VCC
AUDIO
LINE_V
OSD_R
OSD_G
OSD_B
TEXT_R
FBP
X_RAY
TEXT_G
TEXT_B
TEXT_YS
BO
A.PROT
3.58/OTH
P_ON/OFF
V_OUT
VIDEO
LINE_A
TCL
ODD/EVEN
TEXT_R
TEXT_G
TEXT_B
TDA
OSD_B
LINE_V
OSD_R
TEXT_YS
RO
ODD/EVEN
GO
TEXT/OTH
TCL
TEXT/OTH
A_GND
A.PROT
OSD_G
SDA1
A_MUTE
SCL1
V_OUT
SDA1
V_SYNC
VIDEO
SCL1
BO
A_MUTE
GO
RO
OSD_YS
LINE_A
FBP
PIC_MUTE
A_VCC
H_VCC
PIC_MUTE
H_OUT
V_SYNC
FBP
AFT
A.PROT
P_ON/OFF
X_RAY
TEXT/OTH
SDA2
BUS_FREE
STB_PW
SCL2
TRESET
A_GND
STB_PW
LINE_V
H_OUT
P_ON/OFF
AUDIO
3.58/OTH
STB_PW
I/II
VOL
TRESET
TDA
OSD_YS
MENU IR DETECT UNIT
VOL+ VOL- CH+ CH-
AUDIO
SDA
SCL
NP
VDD A0
OR QAS0054-001
A1
A2
VSS
PROTECT
P_ON/OFF
LOCK
3.58/OTH
4.5/OTH
H_SYNC
TV/V
TDA
A_MUTE
ALCON/OFF
VOL
TEXT
I/II
TEXT/OTH
NC
OSD_Ys
OSD_B
OSD_G
OSD_R
RST
GND
LED[TIM]
LED[POW]
AFT
V_SYNC
TCLOCK
ECOIN
NC
SDA1
SCL1
VDD
OSC1SCL2
BUS_FREE
KEY1
KEY2
OSC2
VSSREMOCON
SDA2
IN
CD
GND
RESET
5VOUT
CEBSS09D-03KJ2
5V REG&RESET
R1 R2
BUS_FREE
SCL2
SDA2
SCL1
SDA1
NC
NC
ODD/
RESET
EXT1/OTH
M.ENABLE
VSS
VDD
C0R
OSD_Ys
OSD_B
OSD_G
OSD_R
VS
HS
NC
TVA_MUTE
TCLOCK
TDATA
TEXT/OTH
NC
XTAL1
XTAL2
RST
A_MUTE
VOL
L/OTH1
L/OTH2
L.VL/OTH
GND
VDD
REMOCON
VSS
KEY1
KEY2
SLOW
AFT
CVBS
IREF
VDDA
NC
NC
FIL3
VSSA
LOCK
G1 GO G2 INH VEE VSS
CB
EVEN
AB2B1BOROVDD
V_IN
A_IN
V_OUT
A_OUT
V_IN A_IN
R
G
B
GND
9V
*1:
*2:
*3:
*4:
*5:
2SD601A/QR/-X
2SB709A/QR/-X
UN2212-X
MA111-X
MA3091/M/-X
NC A2
GND
TV.A
I/II
GND
TV.M
GND
SIF
GND
9V
*6: MA3120/M/-X
MA3056/M/-X*7:
QQR0621-002Z*9: UN2211-X*8:
NOTE
VPP
SCL
C.APC1
ABCL
EXTYs
EXTR
EXTG
EXTB
VCJVcc(9V)
R_OUT
G_OUT
B_OUT
VCJGND
4.43MHZ
SECAM
SECAM
PLL
BELL
ref
ref
SP01
A_IN
V/SIF Vcc(9V)
SAW
SAW
V/SIF GND
QSS_IN
RFAGCout
AFToout
V/C IN
IF_AGC
VAPCQDetout
SIF_IN
AUDIO_IN
AUDIO_OUT
BlackLevel
De-emphasis
CHROMAVcc(9V)
VIFDetout
Vcc[5V]
VIDEO_OUT
C.APC2
Y/Vsync_IN
Hsync_IN
3.58MHz
HVcc
Hout
HAFC1
Decoupling
SAWTooth
Vout
Ver.AGC
VDD[5V]
SCP
VSS
SDA
FBP
IC301IC301IC301 12
POWER
TIMER
HEADPHONE
R501
R792
1110
3Vp-p
FRONT
REAR
S701-S705 QSW0619-003Z
3Vp-p3Vp-p (H)
0.2V 5V 0V 0.3V 0.3V 0.2V 2.5V 0V 5V 3.1V 4V 5V 5V
5V5V5V 5V 5V
0V
0V
0V
0V 0V 0V0V 0V
4.8V 4.8V 4.5V
2.4V2.4V0.2V 4V 5V 4.8V 5V 4.4V 4.4V
NC NCNC
NC
NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC
NCNCNCNCNCNCNCNCNC
0V 0V 0V 0V
0V
5V 2.4V
0V 0V 0V 0V 0V 0.2V 0.8V 5V 5V 5V0V 2.5V 2.5V
2.6V 5V 2.5V 5V
5V1.5V3V
1.3V 1.3V 1.3V 1.3V 1.3V
1.3V1.3V1.3V1.3V 3.3V3.3V3.3V
0V 0V 0V
5V
0V 5V 5V
4.8V
4.8V
5V
0V
0V
0V
0V
0V
10.7V 5.9V 0V 5V 5V
23.4V 11.3V 0V 0V 0V 6.3V6.3V0.1V11.1V11.2V
23.5V
23.5V
0V
0V
23.6V
23.6V
4.3V
NC
0V 0V 0V 0V
0V
5V 5V 5V
5V
3.3V 3.3V 3.3V 3.3V 3.3V4.4V 6.4V 9V 2.7V 2.7V4V 4.2V
4.2V
9V 2.8V 2.8V 3.2V 5.8V 3.1V 3.6V
3.7V4.4V 4.1V 4.1V4.1V4.1V4.1V4.4V 9VNC4.7V4.1V0.5V4.3V2.6V6.3V1.5V3.7V1.2V3.1V5.4VNC0.7V
9V
1.4V
2.2V
5V
0V
0V
0.2V
0.2V
0V
8.2V
4V 4.7V
9V 9V
0V
0V 0V
0V
0.3V
0.9V
0V
0V 11.4V
11.4V
0V
0V
0V
0V
5V
5V
0V
0V
34.5V
5V
(H)
4.4V
4.4V
3.2V
0V
0V
0V 0V
4.7V
4V
(H)
IC701 IC701
35
R793
R794
R795
R791
C502
C503
C501
27
5Vp-p 5Vp-p(VER) (HOR)
IC301IC301 36 38
2.8Vp-p 2.8Vp-p (H)(H)
AT24C08-21D43BK
SCG-1433A (AV-14F43/BK)
MAIN PWB (1/2)
OR OR
QNN0281-003 QNN0281-002
2-9 2-10
AV-21LMT3
AV-21LTR3
AV-21LMT3
AV-21LTR3
MAIN PWB CIRCUIT DIAGRAMS (1/2) [AV-14F43/BK]
AV-14F43 AV-14F43

No.52036 No.52036
7
AV-21D43
AV-20N43
AV-14F43
AV-21D43
AV-20N43
AV-14F43
2-11 2-12
AV-21LT3
AV-21LMG3
AV-2105EE
AV-21LT3
AV-21LMG3
AV-2105EE
MAIN PWB CIRCUIT DIAGRAM (2/2) [AV-14F43/BK]
SCG-1433A (AV-14F43/BK)
330/16
QTMN1EM-337Z
C526
BA51W12ST-V5
IC971
X
C975
1000/35
QETM1VM-108
C552
H_VCC
82k
R430
SW_TRANSF
QQS0050-001
! T921
9V
A_GND
2SA1208/ST/Z1-T
Q571
X
C944
1000/16 H
C945
100/16
C979
SCREEN
XR525
47/35
C523
TP-47R
QQL342J-2R2Z
L523
X
L522
BW
Y501
*4
D982
QFZ0199-204
C582
8.2M
QRZ0057-825
!R991
27
1/2W
R526
10k
R429
.47
NCB21HK-473X
C928
BW
Y502
100
R359
U
CN00U
1/50
C976
470/16
C977
220/16
C978
250VAC
QCZ9079-471
!C992
2.7k
R453
FBT
QQH0072-001
!
T522
G2SBA60
D901
*4
D924
68k 2WOMR
QRL02EJ-683X
R903
EG1A-T3
D930
100/10
C571
ERZV10V621CS
QAF0052-621
!VA901
DTC124ESA-T
Q401
1
1/2W
R443
QQR1095-002
!
LF901
X
C432
X
R904 BW
Y905
22
1/2W
R933
CNDEG
2.2k
R926
12k
2WOMR
R365
82k
R436
X
C947
G-OUT
STC344-T
Q352
P_ON/OFF
2kV
QCZ0325-151
C931
56k
3WOMR
QRL03EJ-563X
R928
BW
L353
1.8k
R368
330
R356
*4
D425
QCZ0122-561
C930
RGP10J-TS-T3
D921
1k
R976
MA3270/H/-X
D427
100/35
C924
10/50
C429 X
C431
BW
Y904
BW
L352
12k
2WOMR
R364
1.5k
QRZ0107-152Z
R362
X
R351
12k
2WOMR
R363
X
R566
X
C528
*1
Q402
R-OUT
STC344-T
Q351
100
R357
330p
CH C356
B-OUT
STC344-T
Q353
1.8k
R367
1.8k
R366
T
CN10T
BW
L354
*4
D922
BW
L351
270p
CH C354
330
R355
330
R354
680
1/2W
R921
1.5k
QRZ0107-152Z
R361
1.5k
QRZ0107-152Z
R360
470/10
C357
220p
CH C355
CE42554-001
! SK351
CE42554-001
! SK351
X
R434
*8
K922
FOCUS
470
400VAC
QCZ9079-471
!
!
C991
TP-E
150
R353
X
R352
X
R369
100
R358
1.2k
R421
100/35
QEHR1VM-107Z
C428
TP-47G
QGZ5003C1-04
CN0HV
QGA2501C5-05Z
CN0S1
4.7/50
QEHR1HM-475Z
C433
BWY553
330
R423
2SA966/OY/-T
Q974
1/50
C422 470
R425
0
R426
V.OUTAN5539-LF
IC421
8.2k
R441
X
C421
QSK0061-002
!
RY971
5.6k
R577
QQR0582-001Z
K421
100/35
C427
MA3360/M/-X
D422
22k
1/2W
R576
2.7k
1/2W
R571
SE115N-LF12
ERROR AMP
IC941
33k
R934
PC123F2
!PC921
.002
C351
*8
K921
560k
1/2W
R932
.022
QFP32GJ-223Z
C929
.0022
QCZ9082-222Z
C904
.0033
MY
C926
.0022
QCZ9082-222Z
C907
ICP-N75-Y
!
CP
CP982
BW
1/4WFR
R952
QQL26AK-820Z
L943
*8
K941 100/160
QEZ0420-107
C942
1.2k
R942
RGP10J-TS-T3
D943
RU3YX-LFC4
D942
470/16
C946
5WMFR
QRM059J-R22
R923
*4
D923
250VAC
QCZ9079-102
!C993
X
C923
MA3075/H/-X
D945
POWER REGULATOR
STR-G6653
IC921
*1
Q941
47k
R943 UN2211-X
Q943
10k
R944
.1
NCB21HK-104X
C950
82
QQL26AK-820Z
L941
8.2k
1/2W
R929
MA3056/M/-X
D926
4.7
QRF074K-4R7
R901
.0027
C430
82
QQL26AK-820Z
L942
X
D931
X
Q404
X
R439
X
R438
820
1/2W
R941
X
R437
10K
R578
.0022
QCZ9082-222Z
C905
4.7/250
C554
1.2k
R422
2.2k
R974
22/50
C971
0
Y972
X
Y973
*3
Q975
NCB21HK-103X
R532
*4
D983
BW
Y902
470p
MY
C922
X
R984
X
R982
X
R981
1.2
2WMFR
R922
MA3068/M/-X
D927
X
R983
X
D985
X
D986
*1
Q572
X
C981
X
Q981
X
Q982
.01
C426
*4
D554
MA3200/M/-X
D581
100
R424
39K
R583
560p 2kV
QCZ0122-561
C941
RD12E/B2/-T5
D929
*8
K942
1000/35 HC948
A_VCC
27kR582
X
Q403
ICP-N75-Y
!
CP
CP981
POWER CORD
ODD/EVEN
QRJ146J-2R2X
R552
.1 1W
QRZ9011-1R0
!
R551
5V
X
C553
X_RAY
*5
D553
10k
R442
MFAC275V
QFZ9075-104
QFZ9040-104
!
C901
1.8K
1/2W
R581
X
FR
FR556
STB_PW
A.PROT
QAD0119-9R0
TH901
POWER SW
QSW0750-001
!S901
T3.15AH
QMF51E2-3R15J4
!F901
3.9
1/2W
R432
QEZ0199-127
C909
3.9
1/2W
R433
BW
R584
H.OUT
2SC5388-CA
Q522
QFZ0199-224
C527
12
1/2W
R985
QFZ0200-752
C525
*4
D973
*1
Q973 6.8k
R986
47k
R987
47/25
FBT PROTECTOR
C572
*4
D424
.33
QFV71HJ-334Z
C436
1SR124-400A-T2
D423
X
Y903
X
D925
X
C561
X
D928
10k
2WOMR
QRL02EJ-103X
R980
X
1/2W
R935
X
C921
U
CN00U
X
D946
680
R521
X
R945
X
D947
120
QRL039J-121
R529
0
Y941
10k
R522
QQR1114-001Z
K923
X
Y946
.1/100
MY
C555
0Y945
RH1S-T3
D552
.01/100
C424
XY944
QGAB801C1-02
PW
CN0PW
X
R953
X
R957
X
R959
RGP10J-TS-T3
D582
X
R955
X
R954
X
R951
2SK3065-W
Q521
D
GS
X
R956
X
R958
X
C951
X
C954
.1
TF
C581
RU3AM-LFC4
D941
X
1/2W
R530
X
C953
470p
CH
C949
1.8k
1/2W
R554
X
C952
ABL
X
Q942
X
Q951
V_OUT
X
D562
V_SYNC
FBP
32V
X
D950
QQLZ034-670
L551
X
D561
100/160
QEZ0203-107
C531
X
R565
X
D954
MA3075/M/-X
D571
X
D955
X
C562
X
C352
X
D956
560
1/2W
R440
X
D951
0
Y942
BW
Y943
XR572
250VAC
OR MF
QFZ9075-473
QFZ9040-473
!C910
*8
K943
X
D903
X
D960
XR575
X
D555
0
Y921
H_OUT
10k
R431
2200/25
C435
0
Y503
RGP10J-TS-T3
D551
X
C530
X
R528
68
QRL03EJ-680X
R524
BW
D902
1.5
QRT02EJ-1R5X
R573
XD584
X
D351
G
B
R
2.7
QRT02EJ-2R7X
R574
X
D352
*8
K924
QCZ0325-151
C932
RD27E/B2/-T5
D933
*4
D932
560
QRG01GJ-561
R936
MA3360/M/-X
D421
X
R585
TP-47B
3.3k
R534
3.3k
R533
4.7k
R531
*1
Q524 *1
Q523
10p
C423
1.2k 1/2W
R977
X
D949
47k
R978
*4
D974 1.8k R988
1.2
QRT02EJ-1R2X
R979
QQR0621-002Z
K351
X
R347
X
R348
X
R349
150
R345
150R346
X
D353
100/16
C972
X
D354
X
D355X
D356
A_VCC
V_OUT
V_SYNC
26V
*5
0V
QQD0046-001
DY01
LIVE
DRIVE
*6 : :
*7 :
MA3091/M/-X
MA3120/M/-X
*4 :
MA3051/M/-X
G
R
B
GND
NC
ON
ISOLATED
OSC
TSD
OVP
GND
Vcc
CRT
NC
(AC120~240V)
SCREEN
FOCUS
EHV
X_RAY1
E1
STB
GND Vcc
GND
V01
(1/2)
S1
PUMP UP
GK
QGZ5003C1-02
*8 :
A34AGT13X
QQR1113-001Z
OR RK
THERMAL
()
PROTECTION
LIVE ISOLATED
(())
MAIN PWB (2/2)
V.DY H.DY
X_RAY2
CRT SOCKET PWB
(Within MAIN PWB)
9V
HB
GND
HEATER
TP_E
BK
H
9V
G1
G2
G3
VCC GND 5V CTL
NC
TP_B1
Q351
X-RAY PROTECTOR
FOR TEST
Q352 Q353
2.4V
2.6V
125.7V
3.3V
2.8V
125.6V
2.8V
3.3V122.7V
1.2V
18.7V
0V
OKNG
MA111-X
0.05V
143.5V
18.7V
4.9V
CHGC04-400-G
11.4V
10.4V
0V
B1
(
4.3V
0V
0V
*1
*2
*3
2SD601A/QR/-X
2SB709A/QR/-X
UN2212-X
:
:
X NON MOUNT
(OPTION)
BUS WIREBW
NOTE
:
:
:
)
3.4V
9.9V
114.9V
0V
0V
5V 0V 114.5V
114.8V
9V
10.5V
5V
4.2V
0V
11.3V11.4V
10.7V
0.1V
0V
3.9V
0V
14.4V
25V
38V
38V
24.7V
1.3V
0.7V
0V
91.8V
2.3V
0V
3.6V
3.8V
0V
0.4V
0V
0.5V
5V
0V 0V
0V
0V 5.4V
1000Vp-p 50Vp-p 250Vp-p
30Vp-p 240Vp-p
(H) (H) (H)
(H)
T522T522
T522T522T522 1 3 5
79
(H)
C
DEG-COIL
L01
QQW0093-001
SCG-1433A (AV-14F43/BK)
OR QAD0121-9R0
OR QQS0056-001
CC
(H)(H) (H)125Vp-p120Vp-p 132Vp-p
5.5Vp-p (H)
Q521 D
8.2Vp-p
Q521 S
18.9Vp-p (H)
Q522
C931 K923
B
QMPR010-200-K2
QMPR010-200-E2
OR
OR
TP-B1
TP-E
AV-14F43 AV-14F43

8
No.52036 No.52036
AV-21D43
AV-20N43
AV-14F43
AV-21D43
AV-20N43
AV-14F43
GND
HB
ABL
25V
NC
H.PLUSE
B1
U
A1V1
SCL
AS
NC
AGC
E2
HV
7
8
F
G
HI
JK
M
7
6
5
4
B
A
C
E
6
IF
GH
3
I
L
31
0
1
POWER
REMOCON
K
M
J
2
HP
E
2
1
0
9
6
5478
1
2
1
1
A
C
D
IN OUT G
15
S1
4
C
1
3
-MONO
2
4
1
2
3
1
21
40 42
25
5
35
45
1
T
MARK
15
4
5
6
TUNER
TIMER
1
2
3
4
41
2
L9
30
5
10
25 26
52
8
B
VOL- CH+ CH-
VOL+
LOCK
5
1
2V2
A2
2
I C
-2MONO
41
POWER
50
MENU
8
5
1
4
3
3
32
D
6
20
22
45
50
52
10
15
40
35
30 35
10
27
30
EB
41
1
MICOM
2015
A2
26
EB
DEF
1
40
LIVE
20
B
A
A
1
MARK
1
SDA
BT
NC
IF
27
FA2 2
E
AUDIO
E
B
C
5V
BM
E
OUT
IN
3
GND
4
321
COL
5
6
78910
1
3
4
9
\401/2\41
TEXT
43
21
DEG
T3.15AL 250V
C
5
V/C
5
RGB SW
14
HEATER
TAKADA
00.06.30
ECO
NEAMX5 94V-0
CKF1349-EH2-1
D373
W478
W603
Q102
D921
D928
D925
D102
W504
C949
IC821
CP981
CP982
C651
C981
W519
R572
R551
R903
R922
Y371
R529
R923
R434
Q401
R443
Q974
R581
R653
R986
R981
D923
Y943
R929
R941
R952
R991
C436
C421
C581
C9
50
C975
C555
C430
C427
C663
C307
W522
C659
C946
C948
Y001
C952
C942
C909
C008
L331
W523
W524
PC701
W525
C334
C302
C304
C312 C315
C316
C341
W231
C705
C422
C501
C503
C561
C562
C571
C978
C656
C653 W476
R702
527
W
C971
R502
C831
R573
R651
R748
R977
C923
C432
C742
D949
C941
D705
D902
D903
C993
L001
L103
R574
S
VA901
R749
L1
01
D706
C901
L551
L942
R531
D707
Q402
Y501
Q973
D973
C904
R976
Y973
L943
C365
530
W
J003
J004
J005
S701
R103
D651
IC971
X301
S702
S703
S704
H003
K941
K001
D941
Y503
W582
C907
C992 W009
S705
L522
S901
TH901
H001
H004
Q103
R985
Y002
IC652
C366
D985
C371
R815
Q652
IC703
D372
D945
Q943
C836
W583
Y946
C710
W424
R982
D950
D946
D424
D425
C954
C665
D922
D924
Y976
W173
C527
R654
R002
R003
R004
R109
R111
R112
R114 R117
R118
R121
C832
C834
C835
C812
D932
R936
R301
R302
R303
R304 R305
R307
W482
R313
J002
D982
K703
K704
Q703
Q824
D731
R740
H006
W484
W566
Y374
W012
W014
R423
R424
R425
R426
R431
R441
R503
R521
R565
R566
R575
F901
Q804
R772
R652
C838
R656
R705
R706 R707
R710
R711
R714
R717
R720
R721
R725
R726
R727 R730
S2
R738
R739
R802
R807
R811
R828
R8
29
C826
D901
Y704
C8
27
W569
C709
C713
C714
C715
IC701
Q982
C825
X821
C823
R942
R943
R385
R974
R957D956
W577
W578
C824
C111
C120
C122
R827
C821
C652
W579
W580
W539
W540
R703
C303
C306
C310
C311
W584
C402
02
C5
Y652
C727
Q704
C335
W586
D704
R734
D974
W427
R838
C928
R846
Y942
C972
W429
R904
IC941
IC301
R162
R988
C910
S
T522
W431
W030
Y904
W032
Y905
W436
W061
W062
W329
Y655
Q821 Q822
R833 R835
W441
R836
W247
C841
Y654
R374
W049
W050
W445
W053
C842
W451
W054
90
W5
W057
C321
R312
W066
22
R3
W459
C323
R314
Q302
LF901
W069
W070
L104
W544
W077
Q951
R321
W080
W081
Q301
D427 C429
D302
W088
W089
R158
W090
W094
W098
W101
C325
R3
26
W106
W107
W111
W112
W113
86
W2
W114
D301
W117
C161
W120
W123
W124
C324
R324
W131W132
W294
W295
R325
Y302
C104
R953
W143
W136
W137
R110
D555
W572
W573
W153
W154
C741
R530
C530
W466
W162
Q524
W164
W165
W167
W155
W469
W592
R533
R534
W547
W548
W549
W472
W473
W474
W182
R978
R741
W575
W550
R327
W184
W195
W196
W197
W198
W187
W188
W190
R745
W593
W194
W199
W200
W201
R955
W206
W207
W208
W210
W214
W226
R375
W225
R161
R377
R379
R380 R381
R382
W595
W596
W597
IC704
W599
W506
R771
R773
W600
Q653
Q654
Q942
W517
W553
S
W556
W557
R001
W002
C582
J006
C009
W001
D653
CF162
BE
1
5
10
1
SDA1
SDA2
D.GND
SCL1
SCL2
BUSFREE
1
4
8
91016
15
5
8
1
4
1
5
1
4
101
1
2
3
4
5
1
5
8
2
1PW
B
ISOLATED
5
12478
9
11
12
13
14
15
1610
36
E
A
G
K
IN
EOUT
5
5
7
C
BE
CL001
W411
W479
W412
Y372
PC921
Y373
Q521
Q571
R944
CF102
R723
D423
D551
D552
D561
D582
D930
D942
D943
W502
D954
Q373
IC921
D562
W413
D931
IC371
W518
R935
CF103
RY971
IC421
D986
R524
Y972
R552
C991
R980
FR556
R577
R432
R433
R440
R664
R526
W581
CF161
R554
R571
R576
Y903
R662
R921
R9
26
R932
R933
R934
W561
R847
R701
W003
R987
CP701
C424
C922C926
W004
C428
W562
C924
C554
W521
C706
C005
C435
C552
C945
C531
C001C004
C103
C112
C117
C119
W526
R332
C162
C305
C308
C313
R333
C401
C433
C523
C572
C977
C655
C658
D305
D701
R661
Q709
C921
C976
L523
C553
C944
C947
C431
C929
C930
C931
R750
R928
L002
W005
L941
Y502
Y553
C905
Y921
W528
C743
W529
TU001
R901
R436
R945
R984
SF102
SF101
SF122
D554
Q803
H002
K921
K922
K923
K942
K943
K421
Q522
C525
Y9
41
Y902
D947
W563
C979
Q371
Q372
D793
Q572
R806
C805
Q651
C806
IC702
C367
Q941
R383
W421
D001
C811
D422
D553
D571
D581
D791
D792D794
D795
C708
W422
W423
D926
D927
D929
R983
D341
R845
D960
L701
C664
R839
C326
D652
C166
R102
C8
39
R840
R841
W564
W565
R842
R843
R113
R115
R116
R722
R120
R844
C833
C8
28
R719
R816
R736
R817
C829
C830
R831
R306
R308
W481
CL005
R341
L821
R437
D983
R810
01
X7
K701
Q701
Q702
R438
R848
Q403
Y301
W011
47
C8
W013
R439
R401
R421
R422R4
30
R442
R453
R522
R958
R582
R583
C837
R657
R658
R659
Q404
R660
Q981
W567
R704
R708
R709
R712
R713
R715
R716
18
R7
IC651
R728
R729
R731
R825
R737
CL002
W016
W017
R742
R791
R792
R793
R794
R795
C822
W019
R746
R747
C707
C711
C7
12
C721C722
C724
W023
C7
20
D951
R956
55
D9
R384
R837
Y944
Y945
C002
C003
C006
C007
C105
C106
C107
C108
C109
C110
C113
C115
C116
C121
W541
Q975
W570
C165
C301
C309
C314
C701
C654
W585
C726
Q825
C423
C7
18
C716
C717
C729
C728
C725
W505
T921
CN001
W432
C849
W027
W028
R832
R830
CL003
W063
Y653
R834
W041
C738
R373
Q710
W048
R372
W444
W543
R584
W588
R501
C953
D584
R951
X302
W065
C322
K924
R323
W334
W335
W271
W272
W071
W072
C317
D933
R665
C932
W276
W277
C730
C731
C732
C846
C744
W087
R159
R160
W091
W092
W093
W095
W096
C7
33
C734
W097
W099
R796
C843
W103
W105
R163
R578
R164
65
R1
W110
IC001
R166
Q161
W119
W121
C163
C7
35
C7
36
W129
W130
C7
37
W133
W134
W135
C164
R532
D421
C528
W494
W148
W150
W495
C526
R954
R528
W159
R525
W5
91
Q708
W496
EF801
W168
W169
48
C8
C844
Q523
W574
W175
W176
W177
Y003
W174
C845
W202
W203
W204
W209
W219
W220
W215
W216
W217
W218
W221
R429
C426
R376
R378
R979
R959
W601
W483
W510
W511
R849
R797
C951
Q655
W555
R585
Y160
D306
W602
C719
Y705
D342
C504
W594
W598
Y975
W604
2-13 2-14
PATTERN DIAGRAMS MAIN PWB PATTERN
FRONT TP-91
(B1)
TP-E

No. 52036
A
V-21D43
A
V-20N43
A
V-14F43
2
SPECIFICATIONS
CONTENT
ITEM
AV-21D43/BK AV-20N43/BK AV-14F43/BK
Dimensions(W×H×D) 598mm×468mm×478mm 619mm×458mm×488mm 462mm×340.5mm×375mm
Mass (Net) 21kg 19kg 10kg
TV RF System B/G,I, D/K,
RF Mode PAL / SECAM
Colour System
VIDEO Mode PAL / SECAM
NTSC3.58 / NTSC4.43
Picture Tube Visible size: 51cm measured
diagonally
Visible size: 48cm measured
diagonally
Visible size: 34cm measured
diagonally
High Voltage 26.5kV±1.5kV(at zero beam
current)
22.5kV±1.5kV(at zero beam
current)
Receiving VHF (VL) 46.25MHz～168.25MHz
VHF (VH) 175.25MHz～463.25MHz
UHF 471.25MHz～863.25MHz
CATV
Cable TVs of Mid (X-Z, S1-S10)
Super (S11-S20) & Hyper (S21-
S41) bands receivable
VIF Carrier 38.0MHz
Intermediate
Frequency SIF Carrier
32.5MHz(5.5MHz)
31.5MHz (6.5MHz)
32.0MHz (6.0MHz)
Colour Sub Carrier Frequency
PAL (4.43MHz),
SECAM(4.40625MHz/4.25MHz)
NTSC (3.58MHz / 4.43MHz)
Rating Voltage AC110～240V, 50 / 60Hz
Power Input
Operating Voltage AC90～260V, 50 / 60Hz
Power Consumption 105W (Max) / 68W (Avg) 90W (Max) / 60W (Avg) 70W (Max) / 47W (Avg)
Speaker 5cm×12 cm, Oval type×25cm×9 cm, Oval type×2
Audio Output A2 / Billingual,5W (monaural) A2 / Billingual,3W (monaural)
Aerial Input Terminal 75ΩUnbalanced
Input Video 1V(p-p), 75Ω(Front / Rear)
Audio
500mV(rms) (-4dBs), High
impedance,
RCA×2 (Front / Rear)
Output Video 1V(p-p), 75Ω
Audio
500mV(rms) (-4dBs), Low
impedance,
RCA×1
Headphone jack 3.5 mm mini jack
Remote Control Unit RM-C368GY
(Battery size : AA / R06 / UM-3×
2)
Design and specifications are subject to change without notice.

No.52036
A
V-21D43
A
V-20N43
A
V-14F43
3
SAFETY PRECAUTIONS
1. The design of this product contains special hardware, many
circuits and components specially for safety purposes. For
continued protection, no changes should be made to the original
design unless authorized in writing by the manufacturer.
Replacement parts must be identical to those used in the original
circuits. Service should be performed by qualified personnel
only.
2. Alterations of the design or circuitry of the products should not be
made. Any design alterations or additions will void the
manufacturer's warranty and will further relieve the manufacturer
of responsibility for personal injury or property damage resulting
therefrom.
3. Many electrical and mechanical parts in the products have
special safety-related characteristics. These characteristics are
often not evident from visual inspection nor can the protection
afforded by them necessarily be obtained by using replacement
components rated for higher voltage, wattage, etc. Replacement
parts which have these special safety characteristics are
identified in the parts list of Service manual. Electrical
components having such features are identified by shading
on the schematics and by (!
!!
!) on the parts list in Service
manual. The use of a substitute replacement which does not
have the same safety characteristics as the recommended
replacement part shown in the parts list of Service manual may
cause shock, fire, or other hazards.
4. Don't short between the LIVE side ground and ISOLATED
(NEUTRAL) side ground or EARTH side ground when
repairing.
Some model's power circuit is partly different in the GND. The
difference of the GND is shown by the LIVE : (") side GND, the
ISOLATED(NEUTRAL) : (#) side GND and EARTH : ($) side
GND. Don't short between the LIVE side GND and
ISOLATED(NEUTRAL) side GND or EARTH side GND and
never measure with a measuring apparatus (oscilloscope etc.)
the LIVE side GND and ISOLATED(NEUTRAL) side GND or
EARTH side GND at the same time.
If above note will not be kept, a fuse or any parts will be broken.
5. If any repair has been made to the chassis, it is recommended
that the B1 setting should be checked or adjusted (See
ADJUSTMENT OF B1 POWER SUPPLY).
6. The high voltage applied to the picture tube must conform with
that specified in Service manual. Excessive high voltage can
cause an increase in X-Ray emission, arcing and possible
component damage, therefore operation under excessive high
voltage conditions should be kept to a minimum, or should be
prevented. If severe arcing occurs, remove the AC power
immediately and determine the cause by visual inspection
(incorrect installation, cracked or melted high voltage harness,
poor soldering, etc.). To maintain the proper minimum level of
soft X-Ray emission, components in the high voltage circuitry
including the picture tube must be the exact replacements or
alternatives approved by the manufacturer of the complete
product.
7. Do not check high voltage by drawing an arc. Use a high voltage
meter or a high voltage probe with a VTVM. Discharge the
picture tube before attempting meter connection, by connecting
a clip lead to the ground frame and connecting the other end of
the lead through a 10kΩ2W resistor to the anode button.
8. When service is required, observe the original lead dress. Extra
precaution should be given to assure correct lead dress in the
high voltage circuit area. Where a short circuit has occurred,
those components that indicate evidence of overheating should
be replaced. Always use the manufacturer's replacement
components.
9. Isolation Check
(Safety for Electrical Shock Hazard)
After re-assembling the product, always perform an isolation
check on the exposed metal parts of the cabinet (antenna
terminals, video/audio input and output terminals, Control knobs,
metal cabinet, screwheads, earphone jack, control shafts, etc.)
to be sure the product is safe to operate without danger of
electrical shock.
(1) Dielectric Strength Test
The isolation between the AC primary circuit and all metal parts
exposed to the user, particularly any exposed metal part having a
return path to the chassis should withstand a voltage of 3000V
AC (r.m.s.) for a period of one second.
(. . . . Withstand a voltage of 1100V AC (r.m.s.) to an appliance
rated up to 120V, and 3000V AC (r.m.s.) to an appliance rated
200V or more, for a period of one second.)
This method of test requires a test equipment not generally found
in the service trade.
(2) Leakage Current Check
Plug the AC line cord directly into the AC outlet (do not use a line
isolation transformer during this check.). Using a "Leakage
Current Tester", measure the leakage current from each exposed
metal part of the cabinet, particularly any exposed metal part
having a return path to the chassis, to a known good earth
ground (water pipe, etc.). Any leakage current must not exceed
0.5mA AC (r.m.s.).
However, in tropical area, this must not exceed 0.2mA AC
(r.m.s.).
"
""
"Alternate Check Method
Plug the AC line cord directly into the AC outlet (do not use a line
isolation transformer during this check.). Use an AC voltmeter
having 1000 ohms per volt or more sensitivity in the following
manner. Connect a 1500Ω10W resistor paralleled by a 0.15µF
AC-type capacitor between an exposed metal part and a known
good earth ground (water pipe, etc.). Measure the AC voltage
across the resistor with the AC voltmeter. Move the resistor
connection to each exposed metal part, particularly any exposed
metal part having a return path to the chassis, and measure the
AC voltage across the resistor. Now, reverse the plug in the AC
outlet and repeat each measurement. Any voltage measured
must not exceed 0.75V AC (r.m.s.). This corresponds to 0.5mA
AC (r.m.s.).
However, in tropical area, this must not exceed 0.3V AC (r.m.s.).
This corresponds to 0.2mA AC (r.m.s.).
0.15
μ
F AC-TYPE
1500 Ω10W
GOOD EARTH GROUND
PLACE THIS PROBE
ON EACH EXPOSED
METAL PART
AC VOLTMETER
(HAVING 1000 Ω/V,
OR MORE SENSITIVITY)

No. 52036
A
V-21D43
A
V-20N43
A
V-14F43
4
FEATURES
"New chassis design enables use of an interactive on-screen control.
"Wide range voltage (rating voltage :110V～240V / operating voltage : 90V～260V) AC power input.
"With AUDIO / VIDEO INPUT & OUTPUT terminal.
"MUTING button can reduce the audio level to zero instantly.
"Functional remote control to operate TV set (for channel select, volume control, power ON/OFF, etc.) from a distance.
"I
2C bus control utilizes single chip ICs for IF, V/C, DEF. VSM PRESET, PRESET & SETUP TOUR.
"By means of AUTO PROGRAM, the TV stations can be selected automatically and the TV channels can also be rearranged automatically.
"Built-in AI ECO (ECONOMY, ECOLOGY) sensor.
In accordance with the brightness in a room, the brightness and / of contrast of the picture can be adjusted automatically to make the
optimum picture which is easy on the eye.
"Built – in ON TIMER, RETURN + & CHILD LOCK.
"Built–in PICTURE BOOSTER circuit newly, to amplify the broadcasting wave in the area where wave is weak.
SYSTEM BLOCK DIAGRAM
"
IC301
VIDEO/CHROMA
DECORDER
IC702
MEMORY
TU001
TUNER
IC701
MICRO
COMPUTER
SCL1/SDA1
SCL2/SDA2

No. 52036
A
V-21D43
A
V-20N43
A
V-14F43
5
FUNCTIONS
■FRONT PANEL
■REAR TERMINAL
MENU buttons
(Replacement of IC301)
CHANNEL －/＋buttons
VOLUME －/＋buttons
(Replacement of IC301)
AI ECO sensor
REMOTE CONTROL sensor
ON TIMER lamp
POWER lamp
MAIN POWER button
A/V INPUT terminal
HEADPHONE jack
1
2
3
4
5
6
7
8
9
10
10 9 1 2 3 4 5 6 7 8
ANTTerminal
VIDEO INPUT Terminal
AUDIO INPUT Terminal
AUDIO OUTPUT Terminal
VIDEO OUTPUT Terminal
1
2
3
4
5
2
3
4
5
1
This illustration shows the AV-21D43/BK. Although the design of the AV-
20N43/BK and AV-14F43/BK is different, this illustration is applicable to both
models for the arrangements of buttons, lamps, etc. on the front panel.
[AV-21D43/BK]

No. 52036
A
V-21D43
A
V-20N43
A
V-14F43
6
■REMOTE CONTROL UNIT
PICTURE BOOSTER key
ECO SENSOR key
SOUND SYSTEM key
COLOUR SYSTEM key
TV/VIDEO key
Ⅰ/ⅡKey
OFF TIMER key
CHANNEL SCAN key
RETURN＋key
DISPLAY key
CHANNEL－/＋key
POWER key
PICTURE MODE key
Number (CH.) key
－/－－key
MUTING key
MENU key
MENU ▲/▼key
MENU －/＋key
VOLUME－/＋key
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
17
18

No. 52036
A
V-21D43
A
V-20N43
A
V-14F43
7
MAIN DIFFERENCE LIST
!Model Name
Part Name (Item)
AV-21D43/BK AV-20N43/BK AV-14F43/BK
MAIN PWB SCG-1435A SCG-1434A SCG-1433A
!FRONT CABINET LC11129-021A-H LC10438-032A-H LC10831-030A-H
!REAR COVER GG10130-005A-H LC10448-002B-H CM12961-D01-VH
SPEAKER QAS0086-001 CEBSS12D-07KJ2 QAS0054-001
!PICTURE TUBE A51LMV10X A48LSD095X A34AGT13X
!DEF YOKE CE20336-00A QQD0034-001 QQD0046-001
!DEG COIL QQW0006-001 QQW0061-001 QQW0093-001
!F. B. TRANSF QQH0069-001 QQH0073-001 QQH0072-001
!PWB STOPPER CM48144-002-H
PACKING CASE GG10056-065A-H GG10056-064A-H GG10056-066B-H
Dimensions (W ×H×D) 598mm×468mm×478mm 619mm×458mm×488mm 462mm×340.5mm×375mm
Mass (Net) 21kg 19kg 10kg
Picture Tube Visible size: 51cm measured
diagonally
Visible size: 48cm measured
diagonally
Visible size: 34cm measured
diagonally
High Voltage 26.5kV±1.5kV(at zero beam
current)
22.5kV±1.5kV(at zero beam
current)
Speaker 5cm×12 cm, Oval type×25cm×9 cm, Oval type×2
Power Consumption 105W (Max) / 68W (Avg) 90W (Max) / 60W (Avg) 70W (Max) / 47W (Avg)
Audio Output A2 / Billingual,5W (monaural) A2 / Billingual,3W (monaural)

No. 52036
A
V-21D43
A
V-20N43
A
V-14F43
8
SPECIFIC SERVICE INSTRUCTIONS
DISASSEMBLY PROCEDURE
REMOVING THE REAR COVER
1. Unplug the power plug.
2. As shown in figure, remove the 7screws marked !
!!
!and a
screw marked "
""
".
3. Withdraw the rear cover toward you.
REMOVING THE MAIN PW BOARD
"After removing the rear cover.
1. Slightly raise the both sides of the MAIN PW BOARD by hand.
2. Withdraw the MAIN PW BOARD backward.
(If necessary, take off the wire clamp, connectors etc.)
REMOVING THE SPEAKER
"After removing the rear cover.
1. As shown in figure, remove the 4screws marked #
##
#.
2. Follow the same steps when removing the other hand speaker.
CHECKING THE MAIN PW BOARD
1. To check the back side of the PW Board.
1) Pull out the MAIN PW Board. (Refer to REMOVING THE MAIN
PW Board)
2) Erect the PW Board vertically so that you can easily check the
back side of the PW Board.
[CAUTION]
"When erecting the PW Board, be careful so that there will be no
contacting with other PW Board.
"Before turning on power, make sure that the CRT earth wire and
other connector are properly connected.
WIRE CLAMPING AND CABLE TYING
1. Be sure to clamp the wire.
2. Never remove the cable tie used for tying the wires together.
Should it be inadvertently removed, be sure to tie the wires with a
new cable tie.

No. 52036
A
V-21D43
A
V-20N43
A
V-14F43
9
CRT SOCKET
PWB
FRONT CABI.
POWER
CORD
SPEAKER
SPEAKER
MAIN PWB
C
C
REAR
COVER
B
A(×
××
×7)
(×
××
×1)
(×
××
×4)
(×
××
×4)

No. 52036
A
V-21D43
A
V-20N43
A
V-14F43
10
DISASSEMBLY PROCEDURE
REMOVING THE REAR COVER
1. Unplug the power plug.
2. As shown in figure, remove the 6screws marked !
!!
!and a
screw marked "
""
".
3. Withdraw the rear cover toward you.
REMOVING THE MAIN PW BOARD
"After removing the rear cover.
1. Slightly raise the both sides of the MAIN PW BOARD by hand.
2. Withdraw the MAIN PW BOARD backward.
(If necessary, take off the wire clamp, connectors etc.)
REMOVING THE SPEAKER
"After removing the rear cover.
1. As shown in figure, remove the 2screws marked #
##
#.
2. Follow the same steps when removing the other hand speaker.
CHECKING THE MAIN PW BOARD
1. To check the back side of the PW Board.
1) Pull out the MAIN PW Board. (Refer to REMOVING THE MAIN
PW Board)
2) Erect the PW Board vertically so that you can easily check the
back side of the PW Board.
[CAUTION]
"When erecting the PW Board, be careful so that there will be no
contacting with other PW Board.
"Before turning on power, make sure that the CRT earth wire and
other connector are properly connected.
WIRE CLAMPING AND CABLE TYING
1. Be sure to clamp the wire.
2. Never remove the cable tie used for tying the wires together.
Should it be inadvertently removed, be sure to tie the wires with a
new cable tie.

No. 52036
A
V-21D43
A
V-20N43
A
V-14F43
11
CRT SOCKET
PWB
FRONT CABI.
POWER
CORD
SPEAKER
SPEAKER
MAIN PWB
C
C
REAR
COVER
B
A
(×
××
×2)
(×
××
×1)
(×
××
×6)
(×
××
×2)

No. 52036
A
V-21D43
A
V-20N43
A
V-14F43
12
DISASSEMBLY PROCEDURE
REMOVING THE REAR COVER
1. Unplug the power plug.
2. As shown in figure, remove the 4screws marked !
!!
!and a
screw marked "
""
",#
##
#.
3. Withdraw the rear cover toward you.
REMOVING THE MAIN PW BOARD
"After removing the rear cover.
1. Slightly raise the both sides of the MAIN PW BOARD by hand
and remove the PWB stopper marked $
$$
$from the front cabinet.
2. Withdraw the MAIN PW BOARD backward.
(If necessary, take off the wire clamp, connectors etc.)
REMOVING THE SPEAKER
"After removing the rear cover.
1. As shown in figure, remove the 2screws marked %
%%
%.
2. Follow the same steps when removing the other hand speaker.
CHECKING THE MAIN PW BOARD
1. To check the back side of the PW Board.
1) Pull out the MAIN PW Board. (Refer to REMOVING THE MAIN
PW Board)
2) Erect the PW Board vertically so that you can easily check the
back side of the PW Board.
[CAUTION]
"When erecting the PW Board, be careful so that there will be no
contacting with other PW Board.
"Before turning on power, make sure that the CRT earth wire and
other connector are properly connected.
WIRE CLAMPING AND CABLE TYING
1. Be sure to clamp the wire.
2. Never remove the cable tie used for tying the wires together.
Should it be inadvertently removed, be sure to tie the wires with a
new cable tie.