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AV-21L31B AV-29L31 AV-29L31B

SCHEMATIC DIAGRAMS
COLOR TELEVISION
BASIC CHASSIS

CH

AV-21L31B/T AV-29L31/T AV-29L31B/T
CD-ROM No. SML200202

DISPLAY

POWER

DISPLAY

POWER

MENU

MENU

BASS

CHANNEL

VOLUME

CHANNEL

VOLUME

CLOSED CAPTION

MUTING

CLOSED CAPTION

MUTING

TV/VIDEO

1 4

2 5 8 0

3 6 9
100

TV/VIDEO

1 4

2 5 8 0

3 6 9
100

PICTURE MODE

7

PICTURE MODE

7

CHANNEL SCAN RETURN

CHANNEL SCAN RETURN

ECO SENSOR

OFF TIMER

ECO SENSOR

OFF TIMER

RM-C248 REMOTE CONTROL UNIT

RM-C249 REMOTE CONTROL UNIT

RM-C248-2C [AV-29L31/T]

RM-C249-2C [AV-21L31B/T] [AV-29L31B/T]

[AV-21L31B/T]

[AV-29L31/T, AV-29L31B/T]

COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.

No. 51926 Jan. 2002

AV-21L31B /T AV-29L31 /T AV-29L31B /T STANDARD CIRCUIT DIAGRAM
q 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.

AV-21L31B AV-29L31 AV-29L31B

Type
No indication MY MM PP MPP MF TF BP TAN (3) Coils No unit Others (4) Power Supply : B1 : B2(12V) : 9V : 5V : Ceramic capacitor : Mylar capacitor : Metalized mylar capacitor : Polypropylene capacitor : Metalized polypropylene capacitor : Metalized film capacitor : Thin film capacitor : Bipolar electrolytic capacitor : Tantalum capacitor : [H] : As specified

2. SPECIFIED VOLTAGE AND WAVEFORM VALUES
The voltage and waveform values have been measured under the following conditions. (1) Input signal : Color bar signal (2) Setting positions of each knob/button and variable resistor : Original setting position when shipped (3) Internal resistance of tester : DC 20k/V (4) Oscilloscope sweeping time : H 20S/div :V 5mS/div : Others Sweeping time is specified. (5) Voltage values : All DC voltage values

9 Since the voltage values of signal circuit vary to some extent according to adjustments, use them as reference values.

9Respective 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

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 : [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 : Non-Flammable resistor FR : Fusible resistor

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 the LIVE side GND and ISOLATED(NEUTRAL) side GND at the same time with a measuring apparatus ( oscilloscope, etc.). If the above precaution is not respected , a fuse or any parts will be broken.

9Composition resistor 1/2 [W] is specified as 1/2S or Comp.
(2) Capacitors Capacitance value 1 or higher less than 1 Withstand voltage No indication AC indicated Others

: [pF] : [F] : DC50[V] : AC withstand voltage [V] : DC withstand voltage [V]

9 Electrolytic Capacitors
47/50[Example] : Capacitance value [F]/withstand voltage[V]

Since the circuit diagram is a standard one, the circuit and circuit constants may be subject to change for improvement without any notice.

Jan. 2002 No. 51926

AV-21L31B AV-29L31 AV-29L31B

CONTENTS
SEMICONDUCTOR SHAPES ................................................................................................................................. 2-2 BLOCK DIAGRAM [AV-21L31B/T] ....................................................................................................................... 2-3 CIRCUIT DIAGRAMS [AV-21L31B/T] ................................................................................................................. 2-5
MAIN PWB CIRCUIT DIAGRAM (1/3) ............................................................................................................................. 2-5 MAIN PWB CIRCUIT DIAGRAMS (2/3, 3/3) ................................................................................................................... 2-7

PATTERN DIAGRAMS[AV-21L31B/T] ................................................................................................................ 2-9
MAIN PWB PATTERN ......................................................................................................................................................... 2-9 MAIN (CRT SOCKET) PWB PATTERN ......................................................................................................................... 2-11

BLOCK DIAGRAM [AV-29L31/T, AV-29L31B/T] ......................................................................................... 2-13 CIRCUIT DIAGRAMS [AV-29L31/T, AV-29L31B/T] ................................................................................... 2-15
MAIN PWB CIRCUIT DIAGRAM (1/2) ........................................................................................................................... 2-15 MAIN PWB CIRCUIT DIAGRAM (2/2) ........................................................................................................................... 2-17 CRT SOCKET PWB CIRCUIT DIAGRAM ..................................................................................................................... 2-19 FRONT CONTROL PWB CIRCUIT DIAGRAM ............................................................................................................ 2-21

PATTERN DIAGRAMS [AV-29L31/T, AV-29L31B/T] ................................................................................. 2-23
MAIN PWB PATTERN ....................................................................................................................................................... 2-23 CRT SOCKET PWB PATTERN ....................................................................................................................................... 2-25 FRONT CONTROL PWB PATTERN .............................................................................................................................. 2-26

SEMICONDUCTOR SHAPES
TRANSISTOR
BOTTOM VIEW FRONT VIEW TOP VIEW
CHIP TR
E C B ECB E CB (G)(D)(S) E C B B E C

ECB

IC
BOTTOM VIEW FRONT VIEW TOP VIEW

1 OUT E IN IN E OUT 1 N 1 N

N

CHIP IC
TOP VIEW
N N 1

N

1 N N

2-2

No.51926

AV-21L31B

AV-21L31B

BLOCK DIAGRAM [AV-21L31B /T]
SCL SDA TU001 TUNER 28 SF101 FILTER 29 23 SF102 FILTER 24

MAIN PWB

MAIN (CRT SOCKET) PWB

IF

SIF IN1 SIF IN2 IF IN1 IF IN2 IC701 V/C DEF. PROCESSOR SCL,SDA ROUT GOUT BOUT

51 52 53

R G B

2 3 1 IC351 VIDEO AMP

8 7 9

V01

SCL SDA VIDEO J801 VIDEO-1 INPUT AUDIO L/MONO AUDIO R 7 8 10 V1-V V1-L V1-R COUT1 V/Y CB J802,J803 COMPONENT (VIDEO-2) INPUT CR AUDIO L/MONO AUDIO R 2 V2-L 4 V2-R IC801 VIDEO SW 3 V2-Y YOUT1

29,30

2,3

IC702 EEPROM 25 27

5,6

62,63

SCL1 SDA1

Q150 QSS OUT VDRB(-) VDRA(+) HOUT 35 2 BUF SCL SDA 40 Lout1 41 Rout1 IC601 MULTI SOUND PROCESSOR 30,31

43 42 47 CB CR 48 46

CIN CVBS/YIN Y U V 7

21,22 33

IF VOUT

38

J774 BASS SPEAKER OUT

10 64 Q109

VIDEO OUT J804 OUTPUT AUDIO L AUDIO R

37 36 35

Vout2 Lout2 Rout2 15 MTV-R V3-V L3-L L3-R Lout1 Rout1 24 23 26 14 MTV-L 13 MTV-V

Q111 BUF CF106 TRAP

BUF

J770 HEADPHONE JACK
L, R

VIDEO J771-J773 FRONT IN (VIDEO-3) AUDIO L/MONO AUDIO R

43 44 42

SCL SDA 32 1 IC602 SOUND PROCESSOR

20 12 19 12

L R BASS IC850 OP AMP 8

9 3 IC650 AUDIO AMP 4

20 13 23

SP L SP R

19 Yin1 Vout1

Rout1 Lout1 IC401 VERT OUT Q522 H. OUT KEY_IN V

H

DY01 DEF YOKE

VOL+

VOL-

CH+

CH-

MENU REMOTE, LED D901 RECT T901 SW TRANSF. 5V IC974 REG 8V 9V 32V B1 T551 SCREEN FBT EHV FOCUS1
IC972 3.3V REG

3.3V_STB

REMOCON RECEIVER

POWER LED

S901 F901 AC IN POWER SW IC901 POWER REG PC901 VOLTAGE FEEDBACK IC951 ERROR AMP L951

No.51926

2-3

2-4

No.51926

AV-21L31B

AV-21L31B

CIRCUIT DIAGRAMS [AV-21L31B/T]
MAIN PWB CIRCUIT DIAGRAM (1/3)
TO SPEAKER BASS SPEAKER OUT

0V

0V

0V 2.9V 8.3V 7.4V 0V 3.7V 3.7V 2.9V

5.0V

0V

5.0V

5.0V

3.7V 3.7V 0.1V 3.7V

2.4V

2.4V

4.3V 4.9V 4.4V 4.9V

4.4V

4.9V 4.3V

1.5V

FRONT INPUT (VIDEO-3)

4.9V

1.7V 0V 5.0V 0.2 V 1.9V
9.0V 0V 0V 3.9V

5.0V
6.3V

4.3V

9.0V 3.0V 9.0V

5.3V 4.3V 4.4V 5.0V 4.2V 4.4V 4.2V 2.4V

2.5V

3.1V

7.0V 5.9V 2.6V 1.9V

4.2V

VIDEO-1 INPUT

4.3V 4.9V 4.3V 4.3V 5.7V 4.3V 1.7V

1.9V

TO CRT SOCKET PWB CN10T

4.1V 4.2V 3.4V 1.9V 2.6V 2.6V

4.9V

4.2V 5.1V

3.3V 3.3V 2.7V 3.3V

COMPONENT (VIDEO-2) INPUT
2.6V

1.7V

2.3V

4.8V

5.0 5.0 V V 3.3V

2.6 2.6 2.4 4.2 1.9 0V 1.6V 1.5V 0V 3.3V 0V 3.3V 2.8V 2.7V 2.7V 5.1V V V V V V

1.5V 3.7V 0V 3.3V

8.3V 8.3V 3.5V 2.0V 2.6V 0.6V

1.4V

IC701

21

2.1V

1.0Vp-p(V)

5.0 V 5.0V 9.0V 5.0V 4.4V 0V 3.3V 5.0 3.3V 2.8 V V 0V 0V 0V 0V 1.9 V 1.9 1.9 V V 0 V 4.0V 5.0V

1.8V

8.3V

4.9V

3.0V

3.8V

4.0V

2.0V

0.7V

0.8V

1.6V

1.9V

3.8V

3.6V

4.6V

3.3V

3.3V

2.1V

IC701

22

1.0Vp-p(V)

OUTPUT
5.0V 2.7V 3.3V

IC701

33

IC701

42

2.8Vp-p(H) IC801 7
0V

1.04Vp-p(H)

5.0V 5.0V

1.2Vp-p(H)

IC701

43

IC701

47

0.55Vp-p(H)

1.6Vp-p(H)

IC801

23
-0.4V 0V

1.5V 9.0V 2.2V 0V 0V -0.4V 0V

2.2Vp-p(H)

IC701

51

IC701

52

3.4Vp-p(H)

2.6Vp-p(H)

IC801

27
0V 4.6V -1.0V 5.0V 0.6V

2.1Vp-p(H)

IC701

53

3.6Vp-p(H)

5.0V

2.2Vp-p(H)

33.8V

5.0V

1.7V

1.9V

4.6V

0V

0V

0V

IC801

37

NOTE
X BW 0 1 2 3 5 7 : : : : : : : : OPTION (NON MOUNT) BUS WIRE NRSA63J-0R0X 2SC2412K/QR/-X 2SA1037AK/QR/-X MA111-X DTC124EKA-X 2SC1740S/QR/-T

0.6V

0V 0V

MAIN PWB ASS'Y (1/3) SCH-1042A-H2

No.51926

2-5

2-6

No.51926

AV-21L31B

AV-21L31B

MAIN PWB CIRCUIT DIAGRAMS (2/3, 3/3)
DEG COIL
QQW0118-001

CRT SOCKET

IC401
POWER CORD AC120V-240V 50Hz/60Hz

1

IC401

3
A51LSH196X 2.2k 2.2k 2.2k

0.7Vp-p(V)

30Vp-p(V)

IC401

2

IC401

6
4.7/250

2Vp-p(V)

20Vp-p(V)

14.4V
-13.1V

0.9V

0.3 V 9.0V 0V -15.2V

0.3V

TO MAIN PWB CN00T

X

14.6V

IC401

5

60Vp-p(V)
390k

MAIN (CRT SOCKET) PWB ASS'Y (3/3) SCH-1042A-H2

5.3V 3.3V

IC401

7

5Vp-p(V)

QQLZ031-430

X X X X

9.1V 9.8 V
X

5.1 2.7 V V

19.6V 291V 0V 2.4V

QQH0104-001

BW

X

5.6 6.8

2.0 9.0V 2.0V V 1.9V

6.6V
RU3AM-LFC4 100/160

1.2

2.5V 2.4 V
22k 33

150k QQLZ016-821 1.2

134.2V 26.6V -0.1V
27 CE40203-00CJ1 4700p 0.15 QQR1005-002 2.2k

FOR ADJ. CONNECTOR
ERB06-15-F1

27.7V 0V

0V

0V
6000p

RU3AM-LFC4 4.7/250

2.2

1k

0.6V

0V

20.6V

270

134.2V
100/160

133.8V

0V

Q521

B

Q522

B

T551

6

T551

7

T551

4

T551

8

T551

10
0V 5.0V

2Vp-p(H)

2.4Vp-p(H)

150Vp-p(H)

150Vp-p(H)

25Vp-p(H)

90Vp-p(H)

1140Vp-p(H)

MAIN PWB ASS'Y (2/3) SCH-1042A-H2

Q521

C

T551

9

T551

2

45Vp-p(H)

8Vp-p(H)

96Vp-p(H)

QQD0044-001

NOTE
DEF YOKE

X BW 0 1 3

: : : : :

OPTION (NON MOUNT) BUS WIRE NRSA63J-0R0X 2SC2412K/QR/-X MA111-X

No.51926

2-7

2-8

No.51926

AV-21L31B

AV-21L31B

PATTERN DIAGRAMS [AV-21L31B/T]
MAIN PWB PATTERN

B1

(

)

(

)

FRONT

No.51926

2-9

2-10

No.51926

AV-21L31B

MAIN (CRT SOCKET) PWB PATTERN

TOP

(

)

No.51926

2-11

2-12

No.51926

AV-29L31 AV-29L31B

AV-29L31 AV-29L31B

BLOCK DIAGRAM [AV-29L31 /T, AV-29L31B /T]
SCL SDA TU001 TUNER 28 SF101 FILTER 29 23 SF102 FILTER 24

MAIN PWB

CRT SOCKET PWB

IF

SIF IN1 SIF IN2 ROUT IF IN1 IF IN2 GOUT BOUT 51 52 53 R G B IC101 VIDEO AMP

V01

SCL SDA VIDEO J801 VIDEO-1 INPUT AUDIO L/MONO AUDIO R V/Y CB J802,J803 COMPONENT (VIDEO-2) INPUT CR AUDIO L/MONO AUDIO R 2 V2-L 4 V2-R IC801 VIDEO SW 7 8 10 3

29,30

2,3

IC701 V/C DEF. PROCESSOR SCL,SDA

SCL SDA 35 2 BUF Q150 IC601 MULTI SOUND PROCESSOR 40 41

26,27 30,31 VM VM OUT

V1-V V1-L 25 V1-R V2-Y COUT1 YOUT1 27 1 3

IC702 EEPROM

5,6

62,63

SCL1 SDA1

QSS OUT

IC301 COMB FILTER

16 14

43 42 47

CIN CVBS/YIN Y U V 7

VDRB(-) VDRA(+) HOUT

21,22 33

CB CR

48 46

IF VOUT

38

10 64 Q109

VIDEO OUT J804 OUTPUT AUDIO L AUDIO R

37 36 35

Vout2 Lout2 Rout2 MTV-V

Q111 13 BUF CF106 TRAP

FRONT CONTROL PWB (2/2)

BUF

J801 HEADPHONE JACK

15 43 44 42 MTV-R V3-V L3-L L3-R 26 Lout1 Rout1 19 Yin1 Vout1 24 23 IC665 FILTER 14 MTV-L

L, R L_VOL, R_VOL 5 2 IC650 AUDIO AMP 7 12

SP L SP R

IC401 VERT OUT

V

VIDEO J303 FRONT IN (VIDEO-3) AUDIO L/MONO AUDIO R

FRONT CONTROL PWB (1/2)
KEY_IN REMOTE, LED
IC972 3.3V REG

Q522 H. OUT

H

3.3V_STB

DY01 DEF YOKE

TV/VIDEO VOL+

VOL-

CH+

CH-

MENU

D901 RECT

T901 SW TRANSF.

IC973 12V REG

12V FOCUS1 5V

IC974 REG REMOCON RECEIVER S901 F901 AC IN POWER SW IC901 POWER REG PC901 VOLTAGE FEEDBACK IC951 ERROR AMP POWER LED L951

8V 9V 32V B1

T551 FBT

FOCUS2 SCREEN EHV

No.51926

2-13

2-14

No.51926

AV-29L31 AV-29L31B

AV-29L31 AV-29L31B

CIRCUIT DIAGRAMS [AV-29L31/T, AV-29L31B/T]
MAIN PWB CIRCUIT DIAGRAM (1/2)
IC801 7 IC801 23 IC801 27 IC801 37

1.2Vp-p(H)

2.2Vp-p(H)

2.1Vp-p(H)

2.2Vp-p(H)

0V 0V 2.9V 8.3V 7.4V 0V 3.7V 3.7V TO FRONT CONTROL PWB CN001 3.7V 5.0V 2.9V

5.0V

3.7V 3.7V 4.9V 4.3V 4.9V 4.4V TO FRONT CONTROL PWB CN00A 4.9V 9.0V 5.0V 9.0V 5.3V 4.4V 4.3V 5.0V 4.2V 4.2V 4.4V 7.0V 3.0V 2.4V 0.2 1.5 V V 4.4V 4.9V 4.3V 2.4V 2.4V 0V 0.1V 3.7V 1.7V 1.9V 6.3V 3.1V 5.0V 2.5V 4.3 V 3.0 V 9.0V 0V 0V 3.9V

4.3V

5.9V 1.9V 1.7V 4.9V 4.3V 4.1V 4.2V 3.4V 4.2V 4.2V 2.6V 1.9V
TO CRT SOCKET PWB CN00T

VIDEO-1 INPUT

4.3V

5.7V

4.3V

4.9V

5.1V

1.9V 2.6V 2.6V 2.7 V 3.3V 5.0V 3.3V 3.3V

COMPONENT (VIDEO-2) INPUT
4.8V 1.7V 2.3 V 4.9V 0.9V 1.4V 0V 1.5V 1.6V 9.0V 2.1 V 4.4V 5.0V 2.6V 5.0 V 1.5V 5.0V 0.6V 0V 5.0V 3.8V 1.8V 8.3V 4.9V 3.0V 4.0V 2.0V 0.7V 0.8V 1.9V 1.6V 3.3V 1.9V 3.8V 3.6V 0V 0V 0V 0.6V 0V 3.3V 5.0V 3.3V 2.7 V 3.3V 2.1V 3.1V 0.5V 5.0V 5.0V 5.0 V 2.8V 2.7V 2.7V 5.1V 5.0V 3.3V 1.6V 1.5V 3.3V 0V 0V 0V 2.6 2.6 2.4 4.2 1.9 V V V V V 0V 3.7V 3.3V 8.3V 3.5V 2.0V 1.5V 3.8V 2.6V 0.6 V 1.4V

IC701

21

1.0Vp-p(V)

4.9V

3.3V

IC701

22

1.0Vp-p(V)
4.0V

IC301
OUTPUT

3

3.3 V

2.8 V

0V 0V

4.6 1.9 1.9 V V V

0 V

1.1Vp-p(H)

IC701

33

IC701

42

2.8Vp-p(H)

1.04Vp-p(H)

5.0V 5.0 V 0V

IC701

43

IC701

47

0V 0V 22.8 V 0 V

0V 11.5V 0.1V

15.3V 24V 11.4V

0.55Vp-p(H)

1.6Vp-p(H)

1.5 V

9.0V 2.2V

IC701
0V 0V 0V -0.3V 4.6V -1.0V 5.0 V 0V 0.6V
-0.4V

51

IC701

52

3.4Vp-p(H)
0V

2.6Vp-p(H)

IC701

53

MAIN PWB ASS'Y (1/2)
5.0V 33.8V

3.6Vp-p(H)

SCH-1039A-H2 (AV-29L31/T) SCH-1055A-H2 (AV-29L31B/T)
DIFFERENCE LIST ( PARTS)
SCH-1039A-H2 SCH-1055A-H2 SCH-1039A-H2 SCH-1055A-H2 SCH-1039A-H2 SCH-1055A-H2
IC650 AN5277 AN5275 R661 68k NOT USED C652 10 F/50V 1 F/50V Q660 2SC2412K/QR/-X NOT USED R662 33k NOT USED C657 NOT USED 100 F/50V

16.9V 0.6V 0V

5.0V

1.7V

1.9V

8.6V

4.6V

0V

0V

0V

NOTE X BW 0 2 3 5 7 : : : : : : : OPTION (NON MOUNT) BUS WIRE NRSA63J-0R0X 2SA1037AK/QR/-X MA111-X DTC124EKA-X 2SC1740S/QR/-T

Q688 Q661 R650 22k 2SC2412K/QR/-X NOT USED 2SA1037AK/QR/-X NOT USED NOT USED
R663 10k NOT USED C658 NOT USED 100 F/50V R664 2.2 k NOT USED C662 10 F/50V NOT USED R667 10k 27k C670 0.022 F/50V 0.047 F/25V

R651 0 1k R670 15k 2.7k C672 0.047 F/50V 0.018 F/50V

R652 0 4.7k R675 10k 27k C675 0.047 F/50V 0.018 F/50V

R653 100k 15k R678 15 k 2.7k C676 0.022 F/50V 0.047 F/25V

R654 22k NOT USED R694 NOT USED 4.7k C684 NOT USED 4.7 F/50V

R655 0 1k R695 NOT USED 6.8k C743 100 F/16V 1000 F/10V

R656 0 4.7k C650 10 F/50V 1 F/50V Y602 0 NOT USED

R657 100k 15k

R660 10k NOT USED

No.51926

2-15

2-16

No.51926

AV-29L31 AV-29L31B

AV-29L31 AV-29L31B

MAIN PWB CIRCUIT DIAGRAM (2/2)

1.9 V 3.3V 5.0V 1.7V

IC401

3

IC401

5

30Vp-p(V)
14.4V 0.3 V 0V
L01

60Vp-p(V)

-13.1V

0.9 V 0.3 V

9.0V DEG COIL

IC401

6

IC401

7

IC401

1

-15.2 V 14.6V

20Vp-p(V)

5Vp-p(V)

0.7Vp-p(V)

TO FRONT CONTROL PWB CN00W 5.3V

IC401
3.3V

2

2Vp-p(V)

TO CRT SOCKET PWB CN00U 27.7V 27.7 V 6.6V 6.7V 16.3 V 9.0V 2.0 2.0 V 1.9V V FOR ADJ. CONNECTOR

2.5V 2.4 V

T551

7

25Vp-p(H)

2.4V 0V 291V 19.6V

9.1V 9.6 V

2.7V 5.1 V 16.0V

T551
0.6V

3
134.2V 133.8V 0V

1140Vp-p(H)

90Vp-p(H)

34.1V 11.3 V 11.7V -0.1V 5.0V 0V

20.6V

19.8V

19.8V 19.4V 0V 19.8V 134.2V 26.6V

3.5V

Q521

B

Q522

B

T551

5

T551

4

2Vp-p(H)
27.7V 0V 0V 0V 0.6V

2.4Vp-p(H)

150Vp-p(H)

150Vp-p(H)

Q521

C

T551

2

T551

9

NOTE X BW 0 1 2 3 5 : : : : : : : OPTION (NON MOUNT) BUS WIRE NRSA63J-0RX 2SC2412K/QR/-X 2SA1037AK/QR/-X MA111-X DTC124EKA-X

45Vp-p(H)

8Vp-p(H)

96Vp-p(H)

MAIN PWB ASS'Y (2/2) SCH-1039A-H2 (AV-29L31/T) SCH-1055A-H2 (AV-29L31B/T)

DIFFERENCE LIST ( PARTS)
SCH-1039A-H2 SCH-1055A-H2 C953 2200 F/35V 2200 F/50V D952 K951 K952 ERC30-02L38 QQR1214-001Y NOT USED FSF05A20 NOT USED QQR1214-001Y
DEF YOKE

No.51926

2-17

2-18

No.51926

AV-29L31 AV-29L31B

AV-29L31 AV-29L31B

CRT SOCKET PWB CIRCUIT DIAGRAM

QJB003-083213

TO MAIN PWB CN00T
3.3Vp-p(H)

111V 108V

12.0V 3.4V 3.5V 2.8V 2.6V 12.0V 2.7V

2.8V 2.7V 2.7V

6.0V 207 V

104V

CE42670-001

2.0V 3.3V 3.3V 2.7V 12.0V 2.7V 2.0V

12.0V

3.1Vp-p(H)

2.7V

12.0V 3.4V
2.5Vp-p(H)

154.5 -2.5V V

2.8V

12.0V 2.1V 2.7V

3.4V

2.7V

-2.2V 21.2V 22.7V
IC101 7 IC101 8 IC101 9

150Vp-p(H)

110Vp-p(H)

150Vp-p(H)

BW

1.5 1W QRZ9021-1R5

TO MAIN PWB CN00U 11.4V 2.2V 3.3V 1.5V 2.7V

12.0V 12.0V 7.7V 123V 4.6V 7.0V 64.0V 6.4V 1.6V 1V 64.0V 3.2V 2.7V

123.7V

NOTE X BW 0 1 2 3 7 8 9 : : : : : : : : : : OPTION (NON MOUNT) BUS WIRE NRSA63J-0R0X 2SC2412K/QR/-X 2SA1037AK/QR/-X MA111-X 2SC1740S/QR/-T 2SA933AS/QR/-T CE41492-001Z LOW B GND

7.0V 7.1V

CRT SOCKET PWB ASS'Y SCH-3001A-H2

(H)

: HIGH B GND

No.51926

2-19

2-20

No.51926

AV-29L31 AV-29L31B

AV-29L31 AV-29L31B

FRONT CONTROL PWB CIRCUIT DIAGRAM

FRONT INPUT (VIDEO-3) TO DEG COIL

TO MAIN PWB CN00W

FRONT CONTROL PWB ASS'Y SCH-8001A-H2
0V

5.0 0V V

7.5V 7.5V 6.3V 6.5V

5.9V 5.6V 5.5V 5.5V 12V

5.6V 4.1V -1.4V 0.2V 7.6V

AC110V-240V

NOTE X BW 0 1 2 3 : : : : : : OPTION (NON MOUNT) BUS WIRE NRSA63J-0R0X 2SC2412K/QR/-X 2SA1037AK/QR/-X MA111-X
TO MAIN PWB CN00A

TO SPEAKER

TO MAIN PWB CN001

No.51926

2-21

2-22

No.51926

AV-29L31 AV-29L31B

AV-29L31 AV-29L31B

PATTERN DIAGRAMS [AV-29L31/T, AV-29L31B/T]
MAIN PWB PATTERN

B1

(

)

(

)

FRONT

No.51926

2-23

2-24

No.51926

AV-29L31 AV-29L31B

AV-29L31 AV-29L31B

CRT SOCKET PWB PATTERN

FRONT CONTROL PWB PATTERN

FRONT CONTROL (1/2)

TOP

FRONT

(

)

FRONT CONTROL (2/2)

(

) ( )

FRONT

No.51926

2-25

2-26

No.51926

VICTOR COMPANY OF JAPAN, LIMITED HOME AV NETWORK BUSINESS UNIT 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan
AV21L31BT-H #4 AV29L31T-H #4 AV29L31BT-H #4 Printed in Japan VP0201 SW