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JVC
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AV-21L81B(-BK)
Parts List
30 pgs552.21 Kb0
Schematics
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Service Manual
49 pgs655.71 Kb0
Table of contents
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JVC AV-21L81B(-BK), AV-25L81B(-BK), AV-29L81B(-BK) Schematics

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Page 1
SCHEMATIC DIAGRAMS
COLOUR TELEVISION
BASIC CHASSIS
CH
DISPLAY
SUPER
BASS
CHANNEL VOLUME
SYSTEM
COLOUR
SOUND MUTING
TV/VIDEO
I/II
PICTURE MODE
CHANNEL SCAN
RETURN
ECO SENSOR
RM-C358 REMOTE CONTROL UNIT
POWER
MENU
123
456
7809
OFF TIMER
AV-21L81B AV-25L81B AV-29L81B
(-BK)
(-BK)
(-BK)
CD-ROM No. SML200111
POWER
DISPLAY
MENU
SUPER
BASS
CHANNEL VOLUME
SYSTEM
COLOUR
SOUND MUTING
TV/VIDEO
123
I/II
456
PICTURE MODE
7809
CHANNEL SCAN
RETURN
-/--
ECO SENSOR
RM-C358 REMOTE CONTROL UNIT
-/--
OFF TIMER
RM-C358-1C
[AV-21L81B
(-BK)
, AV-25L81B
RM-C358-1C
(-BK)
] [AV-29L81B
COPYRIGHT © 2001 VICTOR COMPANY OF JAPAN, LTD.
(-BK)
]
No. 51853
Oct. 2001
Page 2
AV-21L81B (-BK) AV-25L81B (-BK)
AV-21L81B AV-25L81B AV-29L81B
AV-29L81B (-BK)
q
NOTE ON USING CIRCUIT DIAGRAMS

STANDARD CIRCUIT DIAGRAM

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
: Original setting position when
shipped (3) Internal resistance of tester : DC 20kØ/V (4) Oscilloscope sweeping time : H ⇒ 20µS/div
:V ⇒ 5mS/div : Others ⇒ Sweeping time is
specified.
(5) Voltage values : All DC voltage values
9Since the voltage values of signal circuit vary to some extent ac-
cording to adjustments, use them as reference values.
3. INDICATION OF PARTS SYMBOL [EXAMPLE]
• In the PW board : R1209
→
R209
Type
•
No indication : Ceramic capacitor MY : Mylar capacitor 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
: B2(12V)
:9V
:5V
9Respective voltage values are indicated
(5) Test point
: Test point
: Only test point display
4. INDICATIONS ON THE CIRCUIT DIAGRAM
(1) Resistors
Resistance value
•
No unit : [Ø] k:[kØ] M:[MØ] 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 : Non-Flammable resistor FR : Fusible resistor
9Composition resistor 1/2 [W] is specified as 1/2S or Comp.
(2) Capacitors
Capacitance value
•
1 or higher : [pF] less than 1 : [µF] Withstand voltage
•
No indication : DC50[V] AC indicated : AC withstand voltage [V] Others : DC withstand voltage [V]
9 Electrolytic Capacitors
47/50[Example] : Capacitance value [µF]/withstand voltage[V]
(6) Connecting method
: Connector
: Wrapping or soldering
: Receptacle
(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 ( 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 cir-
•
cuit constants may be subject to change for improvement with­out any notice.
Oct. 2001 No. 51853
Page 3
AV-21L81B AV-25L81B AV-29L81B

CONTENTS

SEMICONDUCTOR SHAPES ................................................................................................................................. 2-2
BLOCK DIAGRAM [AV-21L81B-BK, AV-25L81B-BK] ..........................................................................2-3
CIRCUIT DIAGRAMS [AV-21L81B-BK, AV-25L81B-BK]
MAIN PWB CIRCUIT DIAGRAM (1/2) [AV-21L81B-BK, AV-25L81B-BK] ................................................................ 2-5
MAIN (2/2) AND CRT SOCKET PWB CIRCUIT DIAGRAMS [AV-21L81B-BK, AV-25L81B-BK]......................... 2-7
PATTERN DIAGRAMS[AV-21L81B-BK, AV-25L81B-BK]
MAIN PWB PATTERN [AV-21L81B-BK, AV-25L81B-BK] ............................................................................................ 2-9
CRT SOCKET PWB PATTERN [AV-21L81B-BK, AV-25L81B-BK] .......................................................................... 2-11
BLOCK DIAGRAM [AV-29L81B-BK] ............................................................................................................... 2-13
CIRCUIT DIAGRAMS [AV-29L81B-BK]
MAIN PWB CIRCUIT DIAGRAM (1/2) [AV-29L81B-BK]............................................................................................ 2-15
MAIN PWB CIRCUIT DIAGRAM (2/2) [AV-29L81B-BK]............................................................................................ 2-17
CRT SOCKET PWB CIRCUIT DIAGRAM [AV-29L81B-BK] ..................................................................................... 2-19
FRONT CONTROL PWB CIRCUIT DIAGRAM [AV-29L81B-BK] ............................................................................. 2-21
PATTERN DIAGRAMS [AV-29L81B-BK]
MAIN PWB PATTERN [AV-29L81B-BK] ....................................................................................................................... 2-23
CRT SOCKET PWB PATTERN [AV-29L81B-BK] ....................................................................................................... 2-25
FRONT CONTROL PWB PATTERN [AV-29L81B-BK] ............................................................................................... 2-26

SEMICONDUCTOR SHAPES

TRANSISTOR
E
C
B
ECB
IC
OUT
E
IN
IN E OUT
CHIP IC
N
N
EC
B
(G)(D)(S)
ECB
1N
TOP VIEW
1
ECB
1N
TOP VIEWBOTTOM VIEW FRONT VIEW
CHIP TR
C
B
E
TOP VIEWBOTTOM VIEW FRONT VIEW
1N
N
1
N
2-2 No.51853
N
Page 4

BLOCK DIAGRAM [AV-21L81B-BK,AV-25L81B-BK]

SCL
SCL SDA
SDA
TU001
TU001
TUNER
J801
J801
VIDEO-1
VIDEO-1
INPUT
INPUT
J802,J803
J802,J803
COMPONENT
COMPONENT
(VIDEO-2)
(VIDEO-2)
INPUT
INPUT
J804
J804
OUTPUT
OUTPUT
J771-J773
J771-J773
FRONT IN
FRONT IN
(VIDEO-3)
(VIDEO-3)
TUNER
VIDEO
VIDEO
AUDIO L/MONO
AUDIO L/MONO
AUDIO R
AUDIO R
V/Y
V/Y
CB
CB
CR
CR
AUDIO L/MONO
AUDIO L/MONO
AUDIO R
AUDIO R
VIDEO OUT
VIDEO OUT
AUDIO L
AUDIO L
AUDIO R
AUDIO R
VIDEO
VIDEO
AUDIO L/MONO
AUDIO L/MONO
AUDIO R
AUDIO R
IF
IF
7
7
V1-V
V1-V
8
8
V1-L
V1-L
10
10
V1-R
V1-R
3
3
V2-Y
V2-Y
IC801
IC801
VIDEO SW
VIDEO SW
2
2
V2-L
V2-L
4
4
V2-R
V2-R
37
37
Vout2
Vout2
36
36
Lout2
Lout2
35
35
Rout2
Rout2
43
43
V3-V
V3-V
44
44
L3-L
L3-L
42
42
L3-R
L3-R
19
19
Yin1
Yin1
SCL
SCL SDA
SDA
COUT1
COUT1
YOUT1
YOUT1
MTV-V
MTV-V
MTV-R
MTV-R
MTV-L
MTV-L
Lout1
Lout1
Rout1
Rout1
Vout1
Vout1
SF101
SF101
FILTER
FILTER
SF102
SF102
FILTER
FILTER
29,30
29,30
25
25
27
27
13
13
15
15
14
14
26
26
24
24
23
23
Q108
Q108
BUF
BUF
CB
CB
CR
CR
CF104,105
CF104,105
5.5 TRAP
5.5 TRAP
6.5 TRAP
6.5 TRAP
EEPROM
EEPROM
IC702
IC702
Q107
Q107
BUF
BUF
5,6
5,6
28
28
29
29
23
23
24
24
2,3
2,3
62,63
62,63
43
43
42
42
47
47
48
48
46
46
CF106
CF106
6.0 TRAP
6.0 TRAP
SIF IN1
SIF IN1
SIF IN2
SIF IN2
IF IN1
IF IN1
IF IN2
IF IN2
IC701
IC701
V/C DEF.
V/C DEF.
PROCESSOR
PROCESSOR
SCL,SDA
SCL,SDA
SCL1
SCL1 SDA1
SDA1
CIN
CIN
CVBS/YIN
CVBS/YIN
Y
Y
U
U
V
V
7
7
AV-21L81B
AV-21L81B
AV-25L81B AV-25L81B
51
ROUT
ROUT
GOUT
GOUT
BOUT
BOUT
QSS OUT
QSS OUT
VDRB(-)
VDRB(-)
VDRA(+)
VDRA(+)
HOUT
HOUT
IF VOUT
IF VOUT
51
52
52
53
53
35
35
21,22
21,22
33
33
38
38
10
10 64
64
Q109
Q109
BUF
BUF
SCL
SCL
SDA
SDA
5.5 FILTER
5.5 FILTER
6.0 FILTER
6.0 FILTER
6.5 FILTER
6.5 FILTER
32
32
1
1
R
R
G
G
B
B
CF140
CF140
CF141
CF141
CF142
CF142
Q130
Q130
BUF
BUF
IC602
IC602
SOUND
SOUND
PROCESSOR
PROCESSOR
CF130
CF130
FILTER
FILTER
20
20
12
12
19
19
Q136
Q136
BUF
BUF
12
12
BUF
BUF
Q132
Q132
L
L
R
R
BASS
BASS
IC850
IC850
OP AMP
OP AMP
Q137
Q137
BUF
BUF
8
8
L, R
L, R
9
9
3
3
4
4
11
11
MAIN PWB
MAIN PWB
IC130
IC130
PIF/SIF
PIF/SIF
DETECTOR
DETECTOR
IC650
IC650
AUDIO AMP
AUDIO AMP
CRT SOCKET PWB
CRT SOCKET PWB
2
2
3
3
1
1
10
10
20
20
13
13
23
23
IC351
IC351
VIDEO AMP
VIDEO AMP
8
8
7
7
9
9
J774
J774 BASS SPEAKER
BASS SPEAKER OUT
OUT
J770
J770 HEADPHONE
HEADPHONE JACK
JACK
SP
SP
L
L
SP
SP
R
R
V01
V01
AC IN
AC IN
VOL+
VOL+
VOL- CH+ CH- MENU
VOL- CH+ CH- MENU
POWER
REMOCON
REMOCON RECEIVER
RECEIVER
S901
S901
POWER SW
POWER SW
POWER
LED
LED
F901
F901
No.51853 No.51853
KEY_IN
KEY_IN
REMOTE, LED
REMOTE, LED
D901
D901 RECT
RECT
IC901
IC901
POWER
POWER
REG
REG
T901
T901
SW
SW
TRANSF.
TRANSF.
PC901
PC901
VOLTAGE
VOLTAGE
FEEDBACK
FEEDBACK
IC951
IC951
ERROR
ERROR
AMP
AMP
2-3 2-4
IC972
IC972
3.3V REG
3.3V REG
IC974
IC974
REG
REG
L951
L951
IC401
IC401
VERT OUT
VERT OUT
Q522
Q522
H. OUT
H. OUT
3.3V_STB
3.3V_STB
5V
5V
8V
8V
9V
9V
32V
32V
B1
B1
T551
T551
FBT
FBT
FOCUS1
FOCUS1
SCREEN
SCREEN
EHV
EHV
V
V
DY01
DY01 DEF YOKE
DEF YOKE
H
H
Page 5

CIRCUIT DIAGRAMS [AV-21L81B-BK,AV-25L81B-BK]

MAIN PWB CIRCUIT DIAGRAMS(1/2)[AV-21L81B-BK,AV-25L81B-BK]
TO SPEAKER
BASS SPEAKER OUT
0V
5.0V
AV-21L81B
AV-21L81B
AV-25L81B AV-25L81B
FRONT INPUT (
)
VIDEO-3
VIDEO-1 INPUT
COMPONENT (
VIDEO-2
INPUT
OUTPUT
)
R885
D806 MTZJ12C-T2
R884
D807 MTZJ12C-T2
9.0V
5.0V
4.4V
7
IC801
)
1.2Vp-p(H
23
IC801
)
2.2Vp-p(H
27
IC801
)
2.1Vp-p(H
37
IC801
)
2.2Vp-p(H
DIFFERENCE LIST(PARTS
R748 R749
SCH-1040A-BK
SCH-1043A-BK
2.7M
2.2M
No.51853 No.51853
)
2.2M
1.8M
K701
QQR1214-001Y
BW
4.9V
4.3V
4.9V
4.4V
4.9V
5.3V
4.3V
4.4V
7.0V
5.9V
4.9V
4.3V
4.3V
5.7V
4.9V
2.6V
2.1V
-1.0V
4.6V
5.0V
4.4V
4.9V
4.3V
9.0V
4.4V
5.0V
4.2V
4.2V
4.3V
4.3V
1.7V
0V
1.9V
1.7V
4.1V
4.2V
3.4V
4.2V
5.1V
2.3V
0V
-0.4V
0V
-0.4V
0V
0V
0.6V
0V
0.6V 0V
9.0V
3.0V
2.4V
9.0V
3.7V1.5V 8.3V 8.3V
0V
3.3V
3.8V
1.9V
3.6V
1.9 V
4.3V
4.6V
1.9V
2.6V
4.2V
TO CRT SOCKET PWB CN10T
1.9V
2.6V
2.6V
3.3V
3.3V
5.0 5.0 V
5.0V
3.3V
V
3.3V 1.6V0V 1.5V 0V
1.8V
1.6V
3.3V
0V
1.9V
1.7V
3.3V
1.9
2.6V2.6 4.2V2.4
5.1V2.7V2.8V 2.7V
3.3V
3.3V 0V
8.3V
3.3V
0V
3.3V
5.0
2.8
V
V
1.5V
9.0V
2.2V
4.6V
4.9V
0V
0V
3.0V
V
V
V
2.0V
0.8V
0.7V
3.8V
3.0V
4.0V
0V
5.0V
5.0V
0V
0V
2.7V
4.8V
5.0V
5.0 V
5.0V
0V
3.3V
5.0V
2.7V
0V
0V
5.0V
33.8V
MAIN PWB ASS’Y(1/2
SCH-1040A-BK(AV-21L81B-BK SCH-1043A-BK(AV-25L81B-BK
0V
3.9V
4.9V
4.9V
4.3V
1.4V
2.0V
3.5V
2.6V
0.6V
IC701
TDA9386N12S0555
2.1V
0
1.9
1.9
4.0V
V
V
V
33
IC701
)
2.8Vp-p(H
43
IC701
)
0.55Vp-p(H
51
IC701
)
3.4Vp-p(H
53
IC701
)
3.6Vp-p(H
IC701
1.0Vp-p(V
IC701
1.0Vp-p(V
IC701
IC701
IC701
21
22
42
1.04Vp-p(H
47
1.6Vp-p(H
52
2.6Vp-p(H
)
)
)
)
)
)
) )
NOTE
)
2-5 2-6
: OPTION(NON MOUNT
X
: BUS WIRE
BW
: NRSA63J-0R0X
0
: 2SC2412K/QR/-X
1
: 2SA1037AK/QR/-X
2
: MA111-X
3
: DTC124EKA-X
5
: 2SC1740S/QR/-T
7
Page 6
AV-21L81B
AV-21L81B
AV-25L81B AV-25L81B
MAIN(2/2)AND CRT SOCKET PWB CIRCUIT DIAGRAMS [AV-21L81B-BK,AV-25L81B-BK]
DEG COIL
3
IC401
1
4.0A
9.0V
C907
QEZ0552-227
19.6V
291V
0V
2.4V
IC401
)
0.7Vp-p(V
2
IC401
)
2Vp-p(V
0V
IC401
30Vp-p(V
20Vp-p(V
)
6
)
9.1V
CRT SOCKET
PICTURE TUBE
14.4V
0.3 V
5
IC401
)
60Vp-p(V
7
5.3V
3.3V
9.8
5.1
2.7
V
V
V
IC401
5Vp-p(V
)
0.9V
-13.1V
0.3V
-15.2V
14.6V
TO MAIN PWB CN00T
CRT SOCKET PWB ASS'Y
SCH-1040A-BK(AV-21L81B-BK SCH-1043A-BK(AV-25L81B-BK
2.0
2.0V
9.0V
1.9V
V
6.6V
2.5V
2.4 V
) )
MAIN PWB ASS'Y(2/2
)
SCH-1040A-BK(AV21L81B-BK SCH-1043A-BK(AV25L81B-BK
DIFFERENCE LIST(PA RT S
)
134.2V
26.6V
0V
0V
27.7V
0V
) )
Q521
2Vp-p(H
B
)
Q522
2.4Vp-p(H
Q521
45Vp-p(H
B
C
0.6V
T551 T551
)
150Vp-p(H)150Vp-p(H
T551 T551
)
8Vp-p(H
0V
6
9
)
96Vp-p(H
7
)
2
)
20.6V
-0.1V
270
T551
25Vp-p(H
4
)
T551
90Vp-p(H
8
)
T551
1140Vp-p(H
10
)
R486R485R484R483R482R481R480R414R369R367R364R354DY01IC480 L01 V01
NOT USEDNOT USEDNOT USEDNOT USEDNOT USEDNOT USEDNOT USED150Ø2.2kØNOT USED2.2kØ2.2kØA51QDX992XQQW0118-001QQD0060-002NOT USEDSCH-1040A-BK
2.7kØ5.6kØ5.6kØ82kØ5.6kØ22kØ680Ø8.2Ø1.8kØ270Ø1.8kØ1.8kØA59QDF891XQQW0119-001QQD0062-001UPC358G2-XESCH-1043A-BK
DEF YOKE
C353R593R592R591R542R541R529R528R524R494R493R492R491R490R489R487
27Ø
4.7µF/250V1kØ2.2Ø2.2kØ150kØ150kØ1.2Ø1.2ØNOT USEDNOT USEDNOT USEDNOT USEDNOT USEDNOT USEDNOT USEDSCH-1040A-BK
1µF/250V820Ø3.9Ø4.7kØ120kØ120kØ0.47Ø0.47Ø82Ø47Ø22kØ8.2kØ5.6kØ1kØ1.2kØ33kØSCH-1043A-BK
D521D480C960C956C955C592C529C528C527C526C525C524C485C483C480C356
ERB06-15-F1NOT USED100µF/160VNOT USEDNOT USED100µF/160V4.7µF/250V0.12µF/250V0.15µF/250V0.039µF/400V3400pF/1.5kVH6100pF/1.5kVHNOT USEDNOT USEDNOT USED220µF/16VSCH-1040A-BK
RH3G-F1MTZJ4.3A-T2220µF/160V220µF/35V470pF/500V220µF/160V2.2µF/100V0.18µF/250V0.18µF/250V0.022µF/400V0.011µF/1.5kVH4700pF/1.5kVH22µF/50V4.7µF/50V10µF/50V1000µF/16VSCH-1043A-BK
T551 CP952
Y956Y955T521Q480L524L523L480K953D956D953D522
BWNOT USEDNOT USEDQQH0104-001CE40203-00CJ1NOT USEDQQLZ034-360QQR1005-004NOT USEDNOT USEDRU3AM-LFC4NOT USEDRU3AM-LFC4SCH-1040A-BK
NOT USEDBWICP-N50-YQQH0097-001QQR1229-0012SD1408/0Y/-LBQQLZ026-140QQR1137-005QQR1138-001QQR1214-001Y31DF6N-FC5RGP10J-5025-T331DF6N-FC5SCH-1043A-BK
No.51853 No.51853
2-7 2-8
134.2V
133.8V
0V
NOTE
: OPTION(NON MOUNT
X
: BUS WIRE
BW
: NRSA63J-0R0X
0
: 2SC2412K/QR/-X
1
: 2SA1037AK/QR/-X
2
: MA111-X
3
FOR ADJ. CONNECTOR
5.0V
0V
)
Page 7

PATTERN DIAGRAMS [AV-21L81B-BK,AV-25L81B-BK]

MAIN PWB PATTERN [AV-21L81B-BK,AV-25L81B-BK]
AV-21L81B AV-25L81B
AV-21L81B AV-25L81B
B1
()
()
FRONT
2-9 2-10No.51853 No.51853
Page 8
CRT SOCKET PWB PATTERN [AV-21L81B-BK,AV-25L81B-BK]
TOP
AV-21L81B AV-25L81B AV-25L81B
AV-21L81B
()
No.51853 No.51853
2-11 2-12
Page 9

BLOCK DIAGRAM [AV-29L81B-BK]

AV-29L81B AV-29L81B
J801
VIDEO-1
INPUT
J802,J803
COMPONENT
(VIDEO-2)
INPUT
J804
OUTPUT
TU001
TUNER
VIDEO
AUDIO L/MONO
AUDIO R
V/Y
CB
CR
AUDIO L/MONO
AUDIO R
VIDEO OUT
AUDIO L
AUDIO R
SCL
SDA
IF
MAIN PWB
28
SF101
FILTER
SF102
FILTER
29,30
SCL SDA
Q107
BUF
5,6
16
14
6.0 TRAP
1
3
5.5 TRAP
6.5 TRAP
IC702
EEPROM
IC301
COMB
FILTER
7
V1-V
8
V1-L
10
V1-R
3
V2-Y
2
V2-L
4
V2-R
37
Vout2
36
Lout2
35
Rout2
43
V3-V
44
L3-L
42
L3-R
19
Yin1
COUT1
YOUT1
IC801
VIDEO SW
MTV-V
MTV-R
MTV-L
Rout1
Vout1
Lout1
25
27
CB
CR
Q108
13
BUF
15
14
26
24
23
CF104,105
29
23
24
2,3
62,63
43
42
47
48
46
CF106
SIF IN1
SIF IN2
IF IN1
IF IN2
IC701
V/C DEF.
PROCESSOR
SCL,SDA
SCL1 SDA1
CIN
CVBS/YIN
Y
U
V
7
ROUT
GOUT
BOUT
QSS OUT
VDRB(-)
VDRA(+)
HOUT
IF VOUT
10 64
Q109
BUF
51
52
53
35
21,22
33
38
SCL SDA
5.5 FILTER
6.0 FILTER
6.5 FILTER
32
1
R
G
B
CF140
CF141
CF142
Q130
BUF
IC602
SOUND
PROCESSOR
Q136
BUF
CF130,131
FILTER
20
12
BUF
Q132
Q137
BUF
IC665
FILTER
11
L, R
IC130
PIF/SIF
DETECTOR
5
2
AUDIO AMP
IC650
10
7
12
CRT SOCKET PWB
IC101
VIDEO AMP
VM OUT
FRONT CONTROL PWB (2/2)
V01
VM
J801
HEADPHONE
JACK
SP
L
SP
R
J302~J304 FRONT IN (VIDEO-3)
AC IN
VIDEO
AUDIO L/MONO
AUDIO R
TV/VIDEO
VOL+
REMOCON RECEIVER
FRONT CONTROL PWB (1/2)
VOL- CH+ CH- MENU
POWER
LED
S901
POWER SW
F901
KEY_IN
REMOTE, LED
D901 RECT
IC901
POWER
REG
IC401
VERT OUT
Q522
H. OUT
T901
SW
TRANSF.
PC901
VOLTAGE
FEEDBACK
IC951
ERROR
AMP
IC972
3.3V REG
IC973
12V REG
IC974
REG
L951
3.3V_STB
12V
5V
8V
9V
32V
B1
T551
FBT
FOCUS1
FOCUS2
SCREEN
EHV
2-13 2-14No.51853 No.51853
V
H
DY01
DEF YOKE
Page 10

CIRCUIT DIAGRAMS [AV-29L81B-BK]

MAIN PWB CIRCUIT DIAGRAM(1/2)[AV-29L81B-BK]
AV-29L81B-BK
AV-29L81B-BK
VIDEO-1 INPUT
COMPONENT (
VIDEO-2
INPUT
OUTPUT
)
TO FRONT CONTROL PWB CN001
TO FRONT CONTROL PWB CN00A
75
BW
75
BW
75
7
IC801
)
1.2Vp-p(H
100k
9.0V
5.0V
4.4V
IC801
2.2Vp-p(H
23
)
4.9V
4.3V
4.9V
4.4V
4.9V
5.3V
5.9V
4.3V
4.3V
4.9V
4.3V
4.3V
5.7V
4.9V
27
IC801
)
2.1Vp-p(H
4.4V
4.9V
4.3V
9.0V
4.4V
4.3V
4.4V
5.0V
4.2V
4.2V
1.7V
4.2V
3.4V
4.2V
5.1V
IC801
1.9V
4.1V
37
2.2Vp-p(H
2.1 V
IC301
1.1Vp-p(H
)
22
0V
9.0V
3.0V
2.4V
9.0V
4.9V
4.3V
TO CRT SOCKET PWB CN00T
1.9V
2.6V
4.2V
1.9V
2.6V
2.6V
2.3
1.7V V
2.6V
0.9V
1.4V
4.9V
1.6V
4.9V
5.0V
0.6V
0V
1.5V
1.5V 0V
3.1V
0.5V
0V
0.6V
5.0V
5.0V
3
)
2.7V
3.3V
3.3V
5.0 V
5.0V5.0
1.6V
0V
3.3V
1.5V
4.8V
5.0V
3.3V
5.0V
3.3V
2.7V
0V
V
1.8V
1.6V
3.3V
3.3V
5.0V
2.8
3.3 V
V
2.7V
3.3V
3.3V
0V
0V
0V
820k
2.6VV2.6
2.4 4.2 1.9
2.7V2.8V
5.1V VVV
3.8V
0V
8.3V
4.9V
3.0V
0V
1M
TDA9386N12S0555
4.0V
2.0
0.7V0.8
V
IC701
1.5V
V
1000/10
3.7V0V3.3V
1.9 V
2.0V
8.3V
3.5V
2.6V
3.8V
1.9V
3.8
3.6
V
0
1.9
1.9
4.6 V
V
V
V
V
3.9V
4.9V
4.3V
0.6
1.4V
V
2.1V
4.0V
IC701
1.0Vp-p(V
IC701
1.0Vp-p(V
21
)
22
)
2.7k
68k
56k
27k
.047/25
.1/16
BA4558F-X
.1/16
MAIN PWB ASS'Y(1/2
.1/16
.1/16
56k
68k
)
68k
68k
.047/25
27k
27k
SCH-1045A-BK(AV-29L81B-BK
No.51853 2-15 2-16 No.51853
27k
.018/50
.018/50
)
33
IC701
)
2.7k
0V
47/16
4.7k
4.7k 33/16
1/50
1/50
4.6V
-1.0V
5.0V
100/50
1/50
1k
8.2k
.022/50
1k
0V
-0.3 V
0V
0.6V
0
1k
AN5275
22.8
0V
0V
0.1V
11.5V
0V
24V 11.4V
.022/50
15.3V
0V
33.8V
1.9V
1.7V
0V
5.0V
5.0V
V
1/50
100/50
8.2k
0V
1.8k
0V
-0.4V
0V
0
4.7/50
9.0V
1.5 V
2.2V
4.6V
5.0V
5.0V
0V
0V
3.0 V
2.8Vp-p(H
43
IC701
)
0.55Vp-p(H
51
IC701
)
3.4Vp-p(H
53
IC701
)
3.6Vp-p(H
NOTE
: OPTION(NON MOUNT
X
: BUS WIRE
BW
: NRSA63J-0R0X
0
: 2SA1037AK/QR/-X
2
: MA111-X
3
: DTC124EKA-X
5
: 2SC1740S/QR/-T
7
IC701
1.04Vp-p(H
IC701
1.6Vp-p(H
IC701
2.6Vp-p(H
42
)
47
)
52
)
)
Page 11
MAIN PWB CIRCUIT DIAGRAM(2/2)[AV-29L81B-BK]
()
LIVE
DEG COIL
L01
QQW0113-001
TO FRONT CONTROL PWB CN00W
2.4V
0V
291V
19.6V
34.1V
11.3 V
9.0V
QQR1214-001Y
ISOLATED
0V
FSF05A20
2200/50
()
27.7V
AV-29L81B
1
IC401
)
0.7Vp-p(V
2
IC401
)
3.3V
5.3V
6.7V
27.7 V
16.3V
9.6
9.1V
2.7V
5.1
V
V
2Vp-p(V
AV-29L81B
14.4V
0.3 V
-13.1V
-15.2
3.3V
1.9V
1.7V
5.0V
3
IC401
)
30Vp-p(V
0.9 V
0.3 V
V
14.6V
9.0V
2.0
2.0
1.9V
V
V
6.6V
2.5V
2.4 V
16.0V
0.6V
-0.1V
IC401
20Vp-p(V
6
)
IC401
60Vp-p(V
IC401
5Vp-p(V
1140Vp-p(H
5
)
7
)
TO CRT SOCKET PWB CN00U
7
T551
)
25Vp-p(H
3
T551
90Vp-p(H
)
134.2V
133.8V
0V
5.0V
0V
)
FOR ADJ. CONNECTOR
NOTE
: OPTION(NON MOUNT
X
: BUS WIRE
BW
: NRSA63J-0R0X
0
: 2SC2412K/QR/-X
1
: 2SA1037AK/QR/-X
2
: MA111-X
3
: DTC124EKA-X
5
19.8V
20.6V
19.8V
19.4V
3.5V
19.8V
134.2V
26.6V
27.7V
0V
0V
0V
0.6V
Q521
Q521
2Vp-p(H
45Vp-p(H
0V
B
)
C
)
Q522
2.4Vp-p(H
B
)
5
T551
150Vp-p(H)150Vp-p(H
2
T551
)
8Vp-p(H
T551
T551
96Vp-p(H
4
)
9
)
)
MAIN PWB ASS’Y(2/2
SCH-1054A-BK(AV-29L81B-BK
)
)
DEF YOKE
2-17 2-18No.51853 No.51853
Page 12
CRT SOCKET PWB CIRCUIT DIAGRAM [AV-29L81B-BK]
QJB003-083213
AV-29L81B AV-29L81B
TO MAIN PWB CN00T
2.8V
2.7V
12.0V
2.1V
2.6V
12.0V
2.0V
12.0V
2.0V
2.7V
2.8V
2.7V
3.5V
3.3V
3.4V
3.4V
3.3V
3.4V
12.0V
2.7V
12.0V
2.7V
12.0V
2.7V
IC101
150Vp-p(H
111V 108V
)
3.3Vp-p(H
3.1Vp-p(H
2.5Vp-p(H
2.7V
2.8V
)
)
2.7V 6.0V
207
-2.5V
154.5 V
V
-2.2V
104V
CE42670-001
BW
21.2V
22.7V
7
)
IC101
110Vp-p(H
8
)
IC101
150Vp-p(H
9
)
1.5
1W
QRZ9021-1R5
TO MAIN PWB CN00U
12.0V
11.4V
2.2V
3.3V
2.7V
4.6V
1.5V
CRT SOCKET PWB ASS’Y SCH-3001A-BK
No.51853 No.51853
1.6V
6.4V
1V
7.7V
7.1V
12.0V
7.0V
7.0V
2-19 2-20
123V
3.2V
123.7V
64.0V
64.0V
2.7V
NOTE
: OPTION(NON MOUNT
X
: BUS WIRE
BW
: NRSA63J-0R0X
0
: 2SC2412K/QR/-X
1
: 2SA1037AK/QR/-X
2
: MA111-X
3
: 2SC1740S/QR/-T
7
: 2SA933AS/QR/-T
8
: CE41492-001Z
9
: LOW B GND
: HIGH B GND
(H)
)
Page 13
FRONT CONTROL PWB CIRCUIT DIAGRAM [AV-29L81B-BK]
TO DEG COIL
TO MAIN PWB CN00W
AV-29L81B AV-29L81B
FRONT CONTROL PWB ASS’Y SCH-8001A-BK
FRONT INPUT
(
)
VIDEO-3
0V
0V
5.0 V
AC110V-240V
-1.4V
4.1V
0.2V
7.5V
7.5V
6.3V
6.5V
5.9V
5.6V
5.6V
7.6V
5.5V
5.5V
12V
NOTE
: OPTION(NON MOUNT
X
: BUS WIRE
BW
: NRSA63J-0R0X
0
: 2SC2412K/QR/-X
1
: 2SA1037AK/QR/-X
TO MAIN PWB CN001
No.51853 No.51853
2-21 2-22
2
: MA111-X
3
)
TO SPEAKER
TO MAIN PWB CN00A
Page 14

PATTERN DIAGRAMS [AV-29L81B-BK]

MAIN PWB PATTERN [AV-29L81B-BK]
AV-29L81B AV-29L81B
B1
()
()
FRONT
No.51853 No.51853
2-23 2-24
Page 15
AV-29L81B AV-29L81B
CRT SOCKET PWB PATTERN [AV-29L81B-BK] FRONT CONTROL PWB PATTERN [AV-29L81B-BK]
TOP
FRONT CONTROL(1/2
)
FRONT
()
()
FRONT CONTROL(2/2
()
FRONT
)
No.51853 No.51853
2-25 2-26
Page 16
VICTOR COMPANY OF JAPAN, LIMITED
HOME AV NETWORK BUSINESS UNIT 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan
AV21L81BBKBK #4 AV25L81BBKBK #4 AV29L81BBKBK #4
Printed in Japan VP0110 SW
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