JVC AV-32D104/AMA, AV-32D104/ARA, AV-32D104/AYA, AV-32D304/AMA, AV-32D304/ARA Service Manual

SERVICE MANUAL

COLOR TELEVISION

5212120035

AV-32D104/AYA, AV-32D104/ARA,
AV-32D104/AMA, AV-32D304/AYA,
AV-32D304/ARA, AV-32D304/AMA

BASIC CHASSIS

GE3

AV-32D104

[RM-C1255G]

1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

2 SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15

5 TROUBLE SHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35

AV-32D304

[RM-C1253G]

TABLE OF CONTENTS

COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITED

No.52121

2003/5

SPECIFICATION

Items

Dimensions (W × H × D) 85.9 cm × 68.4 cm × 54.8 cm (33-7/8" × 27" × 21-5/8")
Mass 52.0kg (114.4Ibs)
TV RF System CCIR(M)
Color System NTSC
Sound System BTSC (Multi Channel Sound)
TV Receiving Channels

and Frequency

TV / CATV Total Channel 180 Channels
Intermediate Frequency Video IF Carrier 45.75 MHz

Color Sub Carrier 3.58 MHz
Power Input AC120V , 60Hz
Power Consumption 128W
Picture Tube Full square Visible size:80cm (32") measured diagonally, (W65.6 cm × H49.6 cm)
High Voltage 31kV ±1.3kV (at zero beam current)
Speaker 5cm × 12cm (2" × 4-3/4"), Oval type × 2
Audio Power Output 5W + 5W
Antenna Terminal (VHF / UHF) 75 Ω unbalanced coaxial, F-type connector
INPUT1 (Rear) VIDEO 1V(p-p), negative sync, 75 Ω, RCA pin jack × 1

S-VIDEO Mini DIN 4-pin × 1

AUDIO (L/MONO, R) 500mVrms(-4dBs), high impedance, RCA pin jack × 2

INPUT2 (Rear) VIDEO --------- 1V(p-p), negative sync, 75 Ω, RCA pin

COMPONENT VIDEO Y&Video : 1V(p-p), negative sync, 75 Ω,

AUDIO (L / MONO, R) 500mVrms(-4dBs), high impedance, RCA pin jack × 2

INPUT3 (Front) VIDEO 1V(p-p), negative sync, 75 Ω, RCA pin jack × 1

AUDIO (L / MONO, R) 500mV(rms)(-4dBs), high impedance, RCA pin jack × 2

AUDIO OUTPUT (L / R) 500mV(rms)(-4dBs)low Impedance, (400kHz when modulated 100%) ,

AV COMPULINK lll --------- 3.5mm mini jack × 1
Remote Control Unit RM-C1255G (AA/R6/UM-3 battery × 2) RM-C1253G (AA/R6/UM-3 battery × 2)

VHF LOW 02ch~06ch : 54MHz~88MHz

VHF HIGH 07ch~13ch : 174MHz~216MHz

UHF 14ch~69ch : 470MHz~806MHz

CATV 54MHz~804MHz

Low Band : 02~06, A-8 by 02~06&01
High Band : 07~13 by 07~13
Mid Band : A~I by 14~22
Super Band : J~W by 23~36
Hyper Band : W+1~W+28 by 37~64
Ultra Band : W+29~W+84 by 65~125
Sub Mid Band : A8, A4~A1 by 01, 96~99

Sound IF Carrier 41.25 MHz (4.5MHz)

Y : 1V(p-p), negative sync, 75 Ω
C : 0.286V(p-p), (burst signal), 75 Ω

Pb/Pr : 0.7V(p-p), 75 Ω, RCA pin jack × 2

RCA pin jack × 2

AV-32D104 AV-32D304

RCA pin jack × 1

Contents

jack × 1
Y : 1V(p-p), negative sync, 75 Ω,

RCA pin jack × 1

Pb/Pr : 0.7V(p-p), 75 Ω, RCA pin jack × 2

Design & specifications are subject to change without notice.

1-2 (No.52121)

SECTION 1

PRECAUTION

1.1 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 cir cuitry of the pr oducts shou ld n ot 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 me chanical 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 w hich 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 part s list of Service
manual may cause shock, fire, or other hazards.

(4) Use isolation transformer when hot chassis.

The chassis and any sub-chassis contained in some products are
connected to one side of the AC power line. An isolation
transformer of adequate capacity should be inserted between the
product and the AC power supply point while performing any
service on some products when the HOT chassis is exposed.

(5) 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 measu re the LIVE side
GND and ISOLATED (NEUTRAL) side GND or EARTH side GND at
the same time with a measuring apparatus (oscilloscope etc.). If
above note will not be kept, a fuse or any parts will be broken.

(6) 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).

(7) 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.

(8) 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 10k

(9) 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.

Ω 2W resistor to the anode button.

(10) Isolation Check (Safety fo r 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, screw heads, earphone jack, control shafts, etc.) to
be sure the product is safe to operate without danger of electrical
shock.

a) 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.

b) 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 1000Ω per volt or more sensitivity in the
following manner. Connect a 1500Ω 10W 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.).

AC VOLTMETER
(HAVING 1000 /V,
OR MORE SENSITIVITY)

0.15 F AC-TYPE

PLACE THIS PROBE

1500 10W

(11) High voltage hold down circuit check.

GOOD EARTH GROUND

ON EACH EXPOSED
METAL PART

After repair of the high voltage hold down circuit, this circuit shall
be checked to operate correctly.See item "How to check the high
voltage hold down circuit".

This mark shows a fast
operating fuse, the
letters indicated below
show the rating.

A V

POWER CORD
REPLACEMENT WARNING.

Connecting the white line side of power
cord to "WHT" character side.

PWB

White line side

WHT

PW

(No.52121)1-3

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

2.1 FEATURES

• Titl e CLOSED CAPTION broadcast of C1~C4 and T1~T4 formula is receivable.

• The voice multiplex function of the MTS system is built in.

• By the 3-line digital comb filter, the refreshed image can be seen.

• Expression of a favorite screen can be chosen by the VIDEO STATUS function.

• A program can be enjoyed with a powerful sound by the HYPER SURROUND function.

• Since the V-chip is built in, it can choose, view and listen to a healthy program.

• Th e RETURN + function is built-in.

• A quick fa vorite program can be looked for by the HYPER-SCAN function.

• Since the component signal input terminal is equipped, it reappears direct without deteriorating the signal from DVD.

• By the THEATER PRO function, a reality to which it is viewing and listening in the movie theater can be tasted. (AV-32D304 only)

• By the COMPULINK III function, operation interlocked with the DVD deck can be performed from remote control. (AV-32D304 only)

2.2 HOW TO IDENTIFY MODELS

How to recognize from the appearance of the model concerned is written below.
Please distinguish from several contents currently printed on the rating label.

MODEL NAME

AV-32D104

or AV-32D304

***********

DISTINGUISH NAME

AYA , ARA or AMA

1-4 (No.52121)

2.3 MAIN DIFFERENCE LIST Item

AV-32D104/AYA AV-32D104/ARA AV-32D104/AMA AV-32D304/AYA AV-32D304/ARA AV-32D304/AMA

THEATER PRO BUTTON NON YES
WHITE BLANCE

NON YES

(COLOR TEMP.)
GAME BUTTON YES NON
BBE SYSTEM NON YES
VIDEO-IN

NON (comnon use to Component-Y) YES

(INPUT-2:REAR-TERMINAL)
AV COMPULINK lll NON YES
REMOTE CONTROL UNIT RM-C1255G RM-C1253G
ILLUMINATION

NON YES

(REMOTE CONTROL UNIT)
MAIN PWB ASS'Y
CRT SOCKET PWB ASS'Y
AV SELECT PWB ASS'Y
FRONT CABINET ASS'Y
TERMINAL BOARD
PICTURE TUBE (ITC)

SGE-1505A-M2 SGE-1509A-M2 SGE-1501A-M2 SGE-1507A-M2 SGE-1511A-M2 SGE-1503A-M2
SGE-3503A-M2 SGE-3505A-M2 SGE-3501A-M2 SGE-3503A-M2 SGE-3505A-M2 SGE-3501A-M2

SGE-5501A-M2
LC10641-006A-A
LC20899-006A-A

←←
←←
←←

SGE-5502A-M2
LC10641-005C-A
LC20899-004A-A

←←
←←
←←

A80AKB50X04 A80AEJ15X01 A80JUA061X06 A80AKB50X04 A80AEJ15X01 A80JUA061X15

2.4 FUNCTIONS  FRONT PANEL CONTROLS

INPUT3

VIDEO

L/MONO-AUDIO-R

1

2 3 4 5 7

1

INPUT 3 : VIDEO

2

INPUT 3 : AUDIO L/MONO

3

INPUT 3 : AUDIO R

4

MENU ( ) BUTTON

5

OPERATE ( / ) BUTTON

6

MENU

- CHANNEL + - VOLUME + POWER ON TIMER

OPERATE

8

CHANNEL (-/+) BUTTON

6

7

VOLUME (-/+) BUTTON

8

POWER SW BUTTON

9

ON TIMER / POWER INDICATOR

10

REMOTE CONTROL SENSOR

109

(No.52121)1-5

 REAR TERMINAL

4

3 2 1

AUDIO VIDEO S-VIDEO

R L/MONO

OVER

INPUT 1

A B

A

INPUT 1 TERMINAL

1

S-VIDEO

2

VIDEO

3

AUDIO-L/MONO

4

AUDIO-R

AV-32D104

7

6

R

L

AUDIO OUT

C

1112 9

COMPONENT

VIDEO-IN

8 10

INPUT 2

VIDEO

B

INPUT 2 TERMINAL

6

Y

PB

PR

75

(VHF / UHF)

AUDIO-L/MONO

7

AUDIO-R

8

COMPONENT-Y / VIDEO-IN

9

COMPONENT-P

10

COMPONENT-P

B

R

14

C

AUDIO OUTPUT TERMINAL (Fixed)

11

AUDIO-L

12

AUDIO-R

14

ANTENNA TERMINAL
758*(7*(

AV-32D304

A

INPUT 1 TERMINAL

1

S-VIDEO

4 3 2 1

AUDIO VIDEO S-VIDEO

R L/MONO

OVER

INPUT 1

A B

2

VIDEO

3

AUDIO-L/MONO

4

AUDIO-R

5

COMPONENT

INPUT 2

B

INPUT 2 TERMINAL

5

Y

P

B

PR

75

(VHF / UHF)

14

VIDEO

6

AUDIO-L/MONO

7

AUDIO-R

8

COMPONENT-Y

9

COMPONENT-P

10

COMPONENT-P

B

R

7

6

R

L

AUDIO OUT

AV CONPULINK

12

C

11 13 9

8 10

C

AUDIO OUTPUT TERMINAL (Fixed)

11

AUDIO-L

12

AUDIO-R

13

COMPULINK TERMINAL

14

ANTENNA TERMINAL
758*(7*(

1-6 (No.52121)

 REMOTE CONTROL UNIT

1

2

3

4

5

6

7

19

8

9

10

11

12

18

13

14

16

17

15

1

VCR/ DVD KEY

2

TV/ CATV KEY

3

INPUT KEY:

4

DISPLAY KEY

5

SLEEP TIMER KEY:

6

HYPER SURROUND KEY

TV VIDEO1 VIDO2 V2-COMPONENT VIDEO3

0 15 30 165 180

Hyper Surround Can be Changed ON/OFF

7

VIDEO STATUS KEY:

8

MUTING KEY

9

VOLUME (+/-) KEY / VOL. ( / ) KEY

10

MENU KEY:

11

POWER KEY

12

CHANNEL NUMBER KEY

13

GAME KEY

C.C.

14

15

CHANNEL (+/-) KEY / CH. ( / ) KEY

16

EXIT KEY

17

VCR CONTROL KEY

18

RETURN + KEY

19

100+KEY

PICTURE ADJUST SOUND ADJUST

(CLOSED CAPTION) KEY:

STANDARD DYNAMIC THEATER GAME

INITIAL SETUP CLOCK/TIMERS

OFF CAPTION TEXT

RM-C1255G [AV-32D104]

10

11

RM-C1253G [AV-32D304]

1

1

2

12

3

4

5

6

7

8

9

13

20

19

14

15

16

17

18

VCR/ DVD KEY

2

TV/ CATV KEY

INPUT KEY:

3

DISPLAY KEY

4

5

SLEEP TIMER KEY:

SOUND KEY

6

TV VIDEO1 VIDO2 V2-COMPONENT VIDEO3

0 15 30 165 180

HYPER SORRUND and BBE Can be Changed ON/OFF

7

VIDEO STATUS KEY:

8

THEATER PRO KEY

9

MUTING KEY

10

VOLUME +/- KEY

MENU KEY

11

12

POWER KEY

13

CHANNEL NUMBER KEY

14

LIGHT KEY

15

C.C. (CLOSED CAPTION) KEY:

16

CHANNEL (+/-)KEY / CH. ( / ) KEY

17

EXIT KEY

18

VCR CONTROL KEY

19

RETURN + KEY

20

100+KEY

PICTURE ADJUST SOUND ADJUST

STANDARD DYNAMIC THEATER GAME

/ VOL. ( / ) KEY

INITIAL SETUP CLOCK/TIMERS

OFF CAPTION TEXT

(No.52121)1-7

2.5 SYSTEM BLOCK DIAGRAM

IC702

MEMORY

SCL0 SDA0 SCL0 SDA0 SCL0 SDA0

IC501

MTS

2.6 MAIN MI-COM (CPU) PIN FUNCTION

Pin
No.

Pin name Function

LED/ADC8Bit

1

2

ADC8bit

3

ADC8bit/TC1/Int2

uPLDVss

4

Reset

5

Xout

6

Xin

7

TEST

8

uP DVdd

9

AGC_MUTE

10

UP VVss

11

TV HGND

12

FBP in

13

Hout

14

HVcc

15

HAFC 1

16

Vsaw

17

Vout

18

EW out

19

Xray

20

Ys

21

Cb in

22

Y in

23

Cr in

24

TV DVcc

25

V3in/Cin

26

EHTin

27

V2in/Yin

28

I/O I/O

AFT control2

I

AFT control1

I

Key IN

I

GND

-

RESET,RESET:[L]

I

8MHz OSC

O

8MHz OSC

I

GND

-

5V

-

AGC_MUTE,MUTING:[L],NORMALY:[H]

O

GND

-

GND

-

FBP

I

H OUT

O

9V

-

H AFC

-

GND

-

V OUT

O

EW OUT

O

X RAY

I

YS

I

Cb INPUT

I

Y INPUT

I

Cr INPUT

I

3.3V

-

V3 IN

I

EHT IN

I

V2 IN

I

SCL1

SDA1

MAIN MI-COM

IC201

(MICOM/V/C/DEF)

SCL0 SDA0

IC5501

AV SW

Pin
No.

REMOCON

IC7701

REMOCON
RECEIVER

AFT1

IC101

IF DET

SCL0 SDA0

TU001

TUNER

IC5201

3L Y/C

Pin name Function

29

TV DGND

30

V1in

31

ABCL

Moni OUT

32

Black Det

33

SVMout

34

APL DET

35

Chroma PLL

36

fsc out

37

TV YC Vcc

38

R out

39

40

G out

B out

41

RGB Vcc

42

IK in

43

44

TV AGND

45

uP AGND

uP Avdd

46

47

MAIN-POWER

HAZARD

48

SDA SDAO

49

SDA SDAO

50

PWM7Bit/TC2/Int0

51

PWM14bit

52

Int5/Stop

53

Int4/TC3

54

Int3/RXIN

55

LED2/CSOUT

56

GND

I

V1 IN

I

ABCL IN

O

MONITOR

-

BLACK DETECTION

O

SVM OUT

-

APL FILTER

-

APL FILTER

O

3.58MHz

-

5V

O

R OUT

O

G OUT

O

B OUT

-

9V

I

IK INPUT

-

GND

-

GND

-

5V

O

MAIN POWER:ON:[L],OFF[H]

O

SELFCHECK:HAZARD:[H],NORMALY:[L]

I

SCA0

I/O

SCL0

O

SDA1(EEPROM)

I/O

AGC ADJUST

O

SCL1(EEPROM)

O

LED,ON:[L],OFF:[H]

O

REMOCON INPUT

I

COMPULINK

I

1-8 (No.52121)

SECTION 3

DISASSEMBLY

3.1 DISASSEMBLY PROCEDURE

3.1.1 REMOVING THE REAR COVER

• Unplug the power plug.
(1) As shown in Fig.2, take out the 14 screws [A].
(2) Remove the REAR COVER toward you.

NOTE :

When reinstalling the REAR COVER, carefully push it in ward
after inserting the chassis into the REAR COVER groove.

3.1.2 REMOVING THE CHASSIS BASE

• Remove the REAR COVER.
(1) Slightly raise the both sides of the CHASSIS BASE by

hand, and teka out the 2 claws [B] (Fig.1 and Fig.2) under
the both sides of the chassis from the chassis rail.

(2) As shown in Fig.1, draw the CHASSIS BASE backward

along the chassis rail [C] (Fig.1) in the arrow direction [D]
(Fig.2).
(If necessary, detach the wire clamp, connector's etc.)

NOTE :

When conducting a check with power supplied, be sure to
confirm that the CRT earth wire is connected to the CRT
SOCKET PWB and the MAIN PWB.

3.1.3 REMOVING THE TERMINAL BOARD

• Remove the REAR COVER.
(1) As shown in Fig.2, take out the 4 screws [E].
(2) When you pull out the TERMINAL BOARD, it can be

removed.

3.1.6 REMOVING THE SPEAKER

• Remove the REAR COVER.

• Remove the CHASSIS BASE.
(1) As shown in Fig.2, take out the 4 screws [H].
(2) Follow the same steps when removing the other hand

SPEAKER.

3.1.7 CHECKING THE MAIN PW BOARD

• To check the backside of the MAIN PWB.
(1) Pull out the CHASSIS BASE. (Refer to REMOVING THE

CHASSIS BASE).

(2) Erect the chassis vertically so that you can easily check

from the backside of the MAIN PWB.

CAUTION :

• When erecting the chassis, be careful so that there will be no

contacting with other PWB.

• Before turning on power, make sure that the CRT earth wire

and other connectors are properly connected.

3.1.8 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.

FRONT CABINET

3.1.4 REMOVING THE FRONT CONTROL PW BOARD

• Remove the REAR COVER.

• Remove the CHASSIS BASE.
(1) As shown in Fig.2, ta ke out the 3 screws [F] attached the

FRONT CONTROL PWB with the front cabinet.

(2) Then remove the FRONT CONTROL PWB.

3.1.5 REMOVING THE FRONT TERMINAL PW BOARD

• Remove the REAR COVER.

• Remove the CHASSIS BASE.
(1) As shown in Fig.2, take out the 2 screws [G].
(2) Then remove the FRONT TERMINAL PWB.

C

CHASSIS BASE

MAIN PWB

B

Fig.1

(No.52121)1-9

FRONT CABINET

CRT

SPEAKER

H

CRT SOCKET PWB

FRONT TERMINAL PWB

G

CLAW

POWER CORD

B

MAIN PWB

HTV

CHASSIS BASE

SPEAKER

H

FRONT
CONTROL
PWB

F

CLAW

B

AV SEL PWB

REAR COVER

D

E

TERMINAL BOARD

1-10 (No.52121)

NOTE
This illustration describes about AV-32D304. Although the
AV-32D104 is slightly different from this illustration, it can

A

use for AV-32D104 in the same steps as this illustration.

Fig.2

3.2 REMOVING THE CRT

NOTE:

• Replacement of the CRT should be performed by 2 or more

persons.

• After removing the REAR COVER, CHASSIS etc.,
(1) Putting the CRT change table on soft cloth, the CRT

change table should also be covered with such soft cloth
(shown in Fig. 3).

(2) While keeping the surface of CRT down, mount the TV set

on the CRT change table balanced will as shown in Fig. 3.

(3) Remove 4 screws marked by arrows with a box type

screwdriver as shown in Fig. 4.

NOTE:

Since the cabinet will drop when screws have been
removed, be sure to support the cabinet with hands.

(4) After 4 screws have been removed, put the ca binet sl owly

on cloth (At this time, be carefully so as not to damage the
front
surface of the cabinet) shown in Fig. 5.

NOTE:

• The CRT should be assembled according to the
opposite sequence of its dismounting steps.

• The CRT change table should preferably be smaller
that the CRT surface, and its height be about 35cm.

CRT CHANGE TABLE

CLOTH

CRT
CHANGE
TABLE

Fig.3

CRT

Fig.4

CRT

APPROX.
35cm

BOX
TYPE
SCREW
DRIVER

CABINET

CRT
CHANGE T ABLE

Fig.5

(No.52121)1-11

3.3 MEMORY IC REPLACEMENT

3.3.1 MEMORY IC

This model uses the memory IC.
This memory IC stores data for proper operation of the video/chroma and deflection circuits.
When replacing, be sure to use the IC containing initial setting data.

3.3.2 MEMORY IC REPLACEMENT PROCEDURE

1. Power off

Switch off the power and disconnect the power plug from the
AC outlet.

2. Replace the memory IC

Be sure to use the memory IC written with the initial se tting
values.

3. Power on

Connect the power plug to the AC outlet and switch on the
power.

4. System constant check and setting

(1) Press the [SLEEP TIMER] key and set SLEEP TIMER

for "0 min".

(2) Before disappear the display of SLEEP TIMER settings,

simultaneously press the [DISPLAY] and [VIDEO
STATUS] key of the remote control unit. The SERVICE
MENU screen of Fig.1 will be displayed.

(3) While the SERVICE MENU is displayed, select the

SYSTEM(SYS) item with [CH /] keys and go into
with the [VOL /] keys. Then the SYSTEM mode
screen will be displayed as shown in Fig.1.

(4) Refer to the table of SYSTEM CONSTANT given in page

later, and check the each item. If the value is different,
select the setting item with the [CH /] keys, and
setting with the [VOL /] keys. (The letters of the
selected item is displayed in yellow.)

(5) When adjustment has completed, the values store into

memory IC automatically.

(6) Press the [EXIT] key twice to return to the normal screen.

5. Receiving channel setting

Refer to the OPERATING INSTRUCTIONS and set the
receive channels (Channels Preset) as described.

6. User settings

Check the user setting items according to the given in page
later.
Where these do not agree, refer to the OPERATING
INSTRUCTIONS and set the items as described.

7. SERVICE MENU setting

Verify what to set in the SERVICE MENU, and set whatever is
necessary (Fig.1).
Refer to the SERVICE ADJUSTMENT for setting.

SERVICE MENU

SERV ICE MENU

1.

V/C(S)

3.

SOUND(A)

7.

LOW LIGHT

9.

RF AFC

11.

I2C BUS

SELECT BY
OPERATE BY

SYSTEM (SYS) MODE

SYS01 VIDEO IN

2.

DEF(D)

4.

OTHERS(F)

6.

3L Y/C(LYC)

8.

HIGH LIGHT

10.

VCO

12.

SYSTEM(SYS)

EXIT BY

EXIT

Fig.1

KEY ASSIGNMENT OF REMOTE CONTROL UNIT

(1)

Setting for "0 min"

(2)

Simultaneously push

1-12 (No.52121)

(4)

[VOL. / ]

Setting the value

[CH.

/

(3)

Select the item

Although this illustration of remote control unit is written
about RM-C1253G (AV-32D304), it can use for operating
RM-C1255G (AV-32D104) as same key assignment

]

(5)

EXIT
SERVICE MENU

3.3.3 FACTRY SETTING VALUE
 SETTING OF SWITCHES ON FRONT PANEL AND REMOTE CONTROL UNIT

Item Initial setting Item Initial setting

POWER OFF DISPLAY OFF
CHANNEL CABLE CH-02 VIDEO STATUS DYNAMIC
VOLUME 10 C.C (Closed Caption) OFF
INPUT TV SOUND
HYPER SURROUND

[Only AV-32D104]

 SETTING OF MENU SCREEN

Item Initial setting Item Initial setting

PICTURE ADJUST CLOCK / TIMERS

STANDARD TINT Center SET CLOCK Manual

COLOR Center
PICTURE Center
BRIGHT Center ON/OFF TIMER OFF
DETAIL Center INITIAL SETUP

DYNAMIC TINT Center LANGUAGE ENG

COLOR Center FRONT PANEL LOCK OFF
PICTURE +8 AUTO SHUT OFF OFF
BRIGHT Center XDS ID [Only AV-32D304] ON
DETAIL +10 C.C. (CLOSED CAPTION) CC1/ T1

GAME TINT Center

COLOR +7
PICTURE -10 AUTO TUNER SETUP Unnecessary to set
BRIGHT Center CHANNEL SUMMARY Unnecessary to set
DETAIL +7 V-CHIP

COLOR

[Only AV-32D304]

NOISE MUTING ON

BASS Center SET LOCK CODE "0000"
TREBLE Center
BALANCE Center
MTS STEREO

TEMPERATURE

SOUND ADJUST

OFF BBE : ON

LOW (STD / GAME)
HIGH (DYNAMIC)

[Only AV-32D304]

SET US TV RATINGS
SET MOVIE RATINGS
SET CANADIAN RATINGS ENG
SET CANADIAN RATINGS FRE
UNRATED

HYPER SURROUND : OFF

Time zone : Pacific
D.S.T : Off

Caption : CC1
Text : T1

OFF
All clear
All clear
All clear
All clear
VIEW

3.3.4 SERVICE MENU SETTING ITEMS
Service menu Setting item Remarks

1.V/C(S) S01~S48 VIDEO / CHROMA related circuit adjustment mode

2.DEF(D) D01~D33 DEFLECTION related circuit adjustmen t mode

3.SOUND(A) A01~A06 SOUND related circuit adjustment mode

4.OTHERS(F) F01~F28 Whole system related items adjustment mode

[Fixed value. Do not adjust]

6.3LY/C(LYC) LYC01~LYC12 3 line YC separation related circuit adjustment mode

[Fixed value. Do not adjust]

12.SYSTEM(SYS) SYS01~SYS26 This mode is used when setting up the whole system

[Fixed value. Do not adjust]

(No.52121)1-13

3.4 REPLACEMENT OF CHIP COMPONENT

3.4.1 CAUTIONS

(1) Avoid heating for more than 3 seconds.
(2) Do not rub the electrodes and the resist parts of the pattern.
(3) When removing a chip part, melt the solder adequately.
(4) Do not reuse a chip part after removing it.

3.4.2 SOLDERING IRON

(1) Use a high insulation soldering iron with a thin pointed end of it.
(2) A 30w soldering iron is recommended for ea sily removing parts.

3.4.3 REPLACEMENT STEPS

1. How to remove Chip parts

2. How to install Chip parts

[Resistors, capacitors, etc.]

(1) As shown in the figure, push the part with tweezers and

alternately melt the solder at each end.

(2) Shift with the tweezers and remove the chip part.

[Transistors, diodes, variable resistors, etc.]

(1) Apply extra solder to each lead.

SOLDER

SOLDER

[Resistors, capacitors, etc.]

(1) Apply solder to the pattern as indicated in the figure.

(2) Grasp the chip part with tweezers and place it on the

solder. Then heat and melt the solder at both ends of the
chip part.

[Transistors, diodes, variable resistors, etc.]

(1) Apply solder to the pattern as indicated in the figure.
(2) Grasp the chip part with tweezers and place it on the

solder.

(3) First solder lead A as indicated in the figure.

(2) As shown in the figure, push the part with tweezers and

alternately melt the solder at each lead. Shift and remove
the chip part.

NOTE :

After removing the part, remove remaining solder from the
pattern.

1-14 (No.52121)

A

B

C

(4) Then solder leads B and C.

A

B

C

SECTION 4

ADJUSTMENT

4.1 ADJUSTMENT PREPARATION

(1) There are 2 ways of adjusting this TV : One is with the REMOTE CONTROL UNIT and the other is the conventional

method using adjustment parts and components.

(2) The adjustment using the REMOTE CONTROL UNIT is made on the basis of the initial setting values. The setting values

which adjust the screen to the optimum condition can be different from the initial setting values.

(3) Make sure that connection is correctly made AC to AC power source.
(4) Turn on the power of the TV and measuring instruments for warning up for at least 30 minutes before starting adjustments.
(5) If the receive or input signal is not specified, use the most appropriate signal for adjustment.
(6) Never touch the parts (such as variable resistors, transformers and condensers) not shown in the adjustment items of this service

adjustment.

(7) Preparation for adjustment. Unless otherwise specified in the adjustment items, preset the following functions with the REMOTE

CONTROL UNIT.

Item Preset value

VIDEO STATUS STANDARD
TINT, COLOR, PICTURE, BRIGHT, DETAIL Center
COLOR TEMPERATURE [Only AV-32D304] LOW
BASS, TREBLE, BALANCE Center
HYPER SURROUND OFF
MTS STEREO
NOISE MUTING OFF

4.2 MEASURING INSTRUMENT AND FIXTURES

(1) DC voltmeter (or digital voltmeter)
(2) Oscilloscope
(3) Frequency counter
(4) Signal generator (Pattern generator) [NTSC]
(5) TV audio multiplex signal generator
(6) Remote control unit

4.3 ADJUSTMENT ITEMS

 BASIC ADJUSTMENT

• B1 POWER SUPPLY check

• IF VCO adjustment

• RF AGC adjustment

• FOCUS adjustment

 DEFLECTION CIRCUIT

• V. CENTER / V SIZE adjustment

• H SIZE / H POSITION / SIDE PINCUSHION adjustment

 VIDEO CIRCUIT

• WHITE BALANCE adjus tment LOW LIGHT

• WHI TE BALANCE adjustment HIGH LIGHT

• SUB BRIGHT adjus tment

• SUB CONTRAST adjustmen t

• SUB COLOR adjustment

• SUB TINT adju s tment

 MTS CIRCUIT

• MTS INPUT LEVEL check

• MTS SEPARATION adjustment

 PURITY AND CONVEGENCE
 HOW TO CHECK THE HIGH VOLTAGE HOLD DOWN

CIRCUIT

(No.52121)1-15

4.4 ADJUSTMENT LOCATIONS / WIRING

(ON TIMER

/POWER)

IC7701

CN7007

SPEAKER(L/R)

FRONT CONTROL PWB

SS

POWER

(+) (-) (+) (-)

VOL

LED

AV SELECTOR PWB

CN006

CH MENU R

FRONT

MAIN PWB

CN007

MEMORY IC

IC201

CN004

PW

IC702

FRONT AV IN PWB

L/MONO

F901

FUSE

DEG.

V

FRONT

CN6006

FRONT

CRT

POWER CORD

1:TP-91(B1)
2:NC
3:TP-E ( )

CN001

INPUT TERMI.

CRT SOCKET PWB (SOLDER SIDE)

CN3004

TP-G

IC101

T111(CWTRANSF)

VCO

TP-R

TP-B

TUNER

V CENTER SW

S421

CN005

TOP

HV

E1

CRT EARTH

(BRAIDED ASS'Y)

3

1

B1

HVT

UPPER : FOCUS
LOWER : SCREEN

DY

1-16 (No.52121)

TP-E( )

CN30E2

CN3005

CRT EARTH

(BRAIDED ASS'Y)

4.5 BASIC OPERATION OF SERVICE MENU

4.5.1 TOO L OF SERVICE MENU OPERATION

Operate the SERVICE MENU with the REMOTE CONTROL UNIT.

4.5.2 SERVICE MENU ITEMS

With the SERVICE MENU, various adjustments can be made, and they are broadly classified in the following ite ms of adjustments.

1. V/C(S) VIDEO / CHROMA related circuit adjustment mode

2. DEFLECTION(D) DEFLECTION related circuit adjustment mode

3. SOUND(A) SOUND related circuit adjustment mode

4. OTHERS(F) Whole system related items adjustment mode [Do not adjust]

6. 3L Y/C(LYC) 3 line YC separation related circuit adjustment mode [Do not adjust]

7. LOW LIGHT White balance of "LOW LIGHT" adjustment mode

8. HIGH LIGHT White balance of "HIGH LI GH T " ad justment mode

9. RF AFC RF AFC related circuit adjustment mode [Do not adjust]

10. VCO VCO related circuit adjustment mode

2

11. I2C BUS I

C bus related circuit adjustment mode [Do not adjust]

12. SYSTEM(SYS) This mode is used when setting up the whole system [Fixed value]

4.5.3 BASIC OPERATION OF SERVICE MENU

1. HOW TO ENTER SERVICE MENU

Press the [SLEEP TIMER] key and set the [SLEEP TIMER] for
[0 MIN].
Then press the [DISPLAY] key and the [VIDEO STATUS] key
of the remote control unit simultaneously, and the SERVICE
MENU screen will be displayed as shown fig.1.

2. SELECTION OF SUB MENU SCREEN

In SERVICE MENU, press the [CH /] keys to select any of
the SUB MENU items.
(The letters of the selected items are displayed in yellow)
If an item like to set up becomes yellow, the [VOL /] keys
will be pushed and it will go into the mode.

3. ENTER THE ANY SETTING MODE

(1) If select any of 1.V/C(S) / 2.DEF(D) / 3.SOUND(A) /

4.OTHERS(F) / 6.3L Y/C(LYC) / 7.LOW LIGHT / 8.HIGH
LIGHT / 11.I2C BUS / 12.SYSTEM(SYS) items, and the
[CH /] keys is pressed from SERVICE MENU ( MAIN
MENU ), the each screens will be displayed as shown in
figure page later.

(2) Then the settings or verifications can be performed.

z 9.RF AFC, 10.VCO mode

(1) If select the 9.RF AFC , 10.VCO items, and the [CH /

] keys is pressed from SERVICE MENU (MAIN

MENU), the each screens will be displayed as shown in
figure page later.

(2) Then [VOL /] keys is pressed, the RF AFC SUB

mode, VCO SUB mode screen is displayed.

(3) Then the VCO setting can be performed and RF AFC

verifications can be performed.

SERVICE MENU

SERV ICE MENU

1.

V/C(S)

3.

SOUND(A)

7.

LOW LIGHT

9.

RF AFC

11.

I2C BUS

SELECT BY
OPERATE BY

2.

DEF(D)
OTHERS(F)

4.
3L Y/C(LYC)

6.
HIGH LIGHT

8.
VCO

10.
SYSTEM(SYS)

12.

EXIT BY

EXI T

Fig.1

KEY ASSIGNMENT OF REMOTE CONTROL UNIT

(1)

Setting for "0 min"

(2)

Simultaneously push

(4)

Setting the value

(3)

Select the item

Although this illustration of remote control unit is written
about RM-C1253G (AV-32D304), it can use for operating
RM-C1255G (AV-32D104) as same key assignment

(5)

EXIT

SERVICE MENU

Fig.2

(No.52121)1-17

4. SETTING METHOD

(1) [CH /] keys

Select the SETTING ITEM.

(2) [VOL /] keys

Setting (adjust) the SETTING VALUE of the SETTING
ITEM.
When the key is released the SETTING VALUE will be
stored (memorized).

(3) EXIT key

Returns to the previous screen.

5. RELEASING SERVICE MENU

(1) After returning to the SERVICE MENU upon co mpletion

of the setting (adjustment) work, press the EXIT key
again.

• The settings for LOW LIGHT and HIGH LIGHT are
described in the WHITE BALANCE page of "ADJUSTMENT
PROCEDURE".

• The se tting for VCO are described in the IF VCO page of
"ADJUSTMENT PROCEDURE".

MODE

SETTING No

MODE

ASPECT MODE

PICTURE SELECTIONRECEIVING

RF 4 : 3 STD LOW

SETTING
ITEM

S01 BRIGHT

1.V/C(S)

ASPECT MODE

PICTURE SELECTIONRECEIVING

RF 4 : 3 STD LOW

SETTING
ITEM

D01 V FREQ

WHITE
BALANCE

SETTING VALUE

WHITE
BALANCE

SETTING No SETTING VALUE

SETTING No SETTING VALUE

2.DEF(D)

A01 IN LEVEL

3.SOUND(A)

SETTING
ITEM

1-18 (No.52121)

4.5.4 SERVICE MENU FLOW CHART

MEIN

SERVICE MENU

SERVICE MENU

1.V/C(S) 2.DEF(D)

3.SOUND(A) 4.OTHERS(F)

7.LOW LIGHT 8.HIGH LIGHT

9.RF AFC 10.VCO

11.I2C BUS 12.SYSTEM(SYS)

SELECT BY
OPERATE BY EXIT BY

6.3L Y/C(LYC)

[ SUB MENU ]

1.V/C(S)

RF 4 : 3 STD LOW

S01 BRIGHT

2.DEF(D)

RF 4 : 3 STD LOW

D01 V FREQ





EXIT

[ SUB MENU ]

7.LOW LIGHT

BRIGHT









8.HIGH LIGHT



9.RF AFC [Do not adjust]

TOO HIGH GOOD TOO LOW
TUNER MAIN
AFC ON
FINE







3.SOUND(A)

A01 IN LEVEL



4.OTHERS(F) [Do not adjust]

F01



6.3L Y/C(LYC) [Do not adjust]

LYC01



10.VCO

TUNER MAIN
HIGH LEVEL
REFERENCE LEVEL
LOW LEVEL
SYNC NO

11.I2C BUS [Do not adjust]

I2C BUS ON

12.SYSTEM(SYS) [Fixed]

SYS01 VIDEO



(No.52121)1-19

4.6 INITIAL SETTING VALUE OF SERVICE MENU

(1) Adjustment of the SERVICE MENU is made on the basi s of the initial setting values. Ho wever, the new setting values which

displays on the screen in its optimum condition may differ from the initial setting value.
(2) Do not change the initial setting values of the items not li sted in "ADJUSTMENT PROCEDURE".
(3) "---" is impossible to adjust.

[1.V / C(S) 1/4]

Initial setting value

No. Setting item Variable range

STANDARD THEATER STANDARD STANDARD

S01 BRIGHT 0~127 64 --- --- --- --- --­S02 PICTURE 0~127 55 --- --- --- --- --­S03 COLOR 0~127 55 --- --- 58 62 62
S04 TINT 0~127 64 --- --- 78 68 70
S05 DETAIL 0~63 37 --- 35 40 40 40
S06 BRIGHT + - -32~+32 --- +1 -2 -3 -3 -3
S07 PICT + - -32~+32 --- -10 ±0 ±0 ±0 ±0
S08 COLOR + - -32~+32 --- -3 -2 --- --- --­S09 TINT + - -32~+32 --- -3 +2 --- --- --­S10 DETAIL + - -32~+32 --- ±0 --- --- --- ---

[1.V / C(S) 2/4]

RF

EXT

(SV, CV)

EXT (COMPONENT)

Initial setting value

No. Setting item Variable range

S11 R CUT OFF 0~255 30 --- --- --- --- --- --- --­S12 G CUT OFF 0~255 30 --- --- --- --- --- --- --­S13 B CUT OFF 0~255 30 --- --- --- --- --- --- --­S14 R DRIVE 0~127 64 --- --- --- --- --- --- --­S15 B DRIVE 0~127 64 --- --- --- --- --- --- --­S16 R CUT + - -128~+127 --- ±0 ±0 ±0 -10 --- --- --­S17 G CUT + - -128~+127 --- ±0 ±0 ±0 ±0 --- --- --­S18 B CUT + - -128~+127 --- ±0 ±0 ±0 -10 --- --- --­S19 R DRV + - -128~+127 --- +5 +13 +7 ±0 --- --- --­S20 B DRV + - -128~+127 --- +6 -25 -9 ±0 --- --- --­S21NTSC MAT 0~3 33112211
S22 BLACK ST 0~3 1 --- 1 --- --- --- --- --­S23 DCREST 0~1 1 --- 1 --- --- --- --- --­S24 DCRSW 0~1 1 --- 1 --- --- --- --- ---

[1.V / C(S) 3/4]

No. Setting item Variable range

S25 ASY SHRP 0~7 5 4 4
S26 BPF FO 0~1 0 0 --­S27 KILR OFF 0~1 0 0 --­S28 KILR SEN 0~1 1 1 ---

STANDARD THEATER STANDARD THEATER

LOW HIGH LOW HIGH LOW HIGH LOW HIGH

RF / EXT (SV, CV) EXT (COMPONENT)

Initial setting value

RF EXT (SV, CV) EXT (COMPONENT)

1-20 (No.52121)

[1.V / C(S) 4/4] [2.DEF(D)]

No. Setting item Variable range Initial setting value

S29 RGB MUTE 0~1 0
S30 BLUE B 0~1 0
S31 VIDEO SW 0~3 3
S32 CMP ABCL 0~1 0
S33 OSD ABL 0~1 0
S34 OSD CONT 0~63 10
S35 SUB CONT 0~15 8
S36 ABL GAIN 0~3 0
S37 ABL PNT 0~3 3
S38 Y GAMMA 0~3 1
S39 Y MUTE 0~1 0
S40 SVM GAIN 0~3 0
S41 SVM PH 0~3 0
S42 WPL 0~1 0
S43 COL GMM 0~1 0
S44 V1 GAIN 0~7 4
S45 AGC ADJ 0~127 63
S46 VMOFF DE -128~+127 ±0
S47 APC CLK 0~1 1
S48 PIP ADJ 0~15 5

No. Setting item Variable range

D01 V FREQ 0~3 0 3
D02 AFC GAIN 0~3 0 2
D03 H POSI 0~31 16 16
D04 H POSI -128~+127 --- --­D05 V PHASE 0~7 0 0
D06 V PH+- -128~+127 --- --­D07 V SIZE 0~127 70 70
D08 V SIZE+- -128~+127 --- --­D09 V CENTER 0~15 32 32
D10 V CENT+- -128~+127 --- --­D11 V S CORR 0~15 5 5
D12 V S CO+- -128~+127 --- --­D13 V LIN 0~15 12 12
D14 V LIN+- -128~+127 --- --­D15 H SIZE 0~63 32 32
D16 H SIZE+- -128~+127 --- --­D17 WVMT TOP 0~3 0 0
D18 WVMT BTM 0~3 0 0
D19 EWCR TOP 0~31 12 12
D20 EWCR T+- -128~+127 --- --­D21 EWCR BTM 0~31 15 15
D22 EWCR B+- -128~+127 --- --­D23 EW PARA 0~63 36 36
D24 EW PARA+- -128~+127 --- --­D25 V EHT 0~7 0 0
D26 V EHT+- -128~+127 --- --­D27 H EHT 0~7 0 0
D28 H EHT+- -128~+127 --- --­D29 TRAPEZ 0~63 35 35
D30 TRAPEZ+- -128~+127 --- --­D31 V AGC 0~1 0 0
D32 BLANK SW 0~1 0 0
D33 VRMP BI 0~1 0 0

Initial setting value

RF EXT

(SV, CV)

(No.52121)1-21

[3.SOUND(A)]

No. Setting item Variable range Initial setting value

A01 IN LEVEL 0~15 10
A02 LOW SEP 0~63 32
A03 HI SEP 0~63 32
A04 SAPC 0 / 1 0
A05 BBE BASS -128~+127 +3
A06 BBE TRE -128~+127 -4

[4.OTHERS(F)] (Do not adjust)

No. Variable range Initial setting value

F01 0~15 37
F02 0~15 90
F03 0~15 45
F04 0~15 93
F05 0~63 7
F06 0~1 0
F07 0~63 2
F08 0~2 0
F09 0~255 5
F10 0~255 5
F11 0~255 16
F12 0~63 32
F13 0~255 3
F14 0~255 5
F15 0~63 0
F16 0~63 10
F17 0~63 20
F18 0~255 2
F19 -128~+127 +8
F20 -128~+127 -4
F21 -128~+127 -10
F22 -128~+127 -16
F23 0~1 0
F24 0~2 0
F25 0~255 255
F26 0~255 40
F27 0~255 15
F28 0~1 1

[6.3L Y / C(LYC)] (Do not adjust)

No. Variable range Initial setting value

LYC01 0~7 4
LYC02 0~7 1
LYC03 0~1 0
LYC04 0~1 0
LYC05 0~15 2
LYC06 0~1 0
LYC07 0~1 1
LYC08 0~3 0
LYC09 0~1 1
LYC10 0~1 0
LYC11 0~1 0
LYC12 0~1 0

1-22 (No.52121)

[12.SYSTEM (SYS)]

No. Setting item Variable range

SYS01 VIDEO IN 0~4 3 3
SYS02 PIP 0~1 0 0
SYS03 3D Y/C 0~1 0 0
SYS04 Y CV 0~1 1 1
SYS05 CCD PCHK 0~1 1 1
SYS06 PURITY 0~1 0 0
SYS07 VM 0~1 0 0
SYS08 NOISE CR 0~1 0 0
SYS09 CLR TEMP 0~1 0 1
SYS10 THEATER 0~1 1 1
SYS11 THEATER PRO 0~1 0 1
SYS12 BBE 0~1 0 1
SYS13 HYP SURR 0~1 1 1
SYS14 16:9 MD 0~1 0 0
SYS15 HYP SCAN 0~1 1 1
SYS16 EZ SURF 0~1 0 0
SYS17 ID DISP 0~1 0 1
SYS18 COMPULINK 0~1 0 1
SYS19 CCD 0~1 1 1
SYS20 VCHIP 0~1 1 1
SYS21 VCHIP CA 0~1 1 1
SYS22 JVC LOGO 0~1 1 1
SYS23 CMP IN 0~1 1 1
SYS24 CXA1875 0~1 0 0
SYS25 PIM 0~1 0 1
SYS26 GAME MD 0~1 1 0

AV-32D104 AV-32D304

Initial setting value

(No.52121)1-23

4.7 ADJUSTMENT PROCEDURE

4.7.1 CHECK ITEM

Item

B1 POWER
SUPPLY
Check

Measuring

instrument

DC voltmeter B1 Connector

1 pin TP-91
3 pin TP-E
[MAIN PWB]

4.7.2 IF VCO

Test point Adjustment part Description

(1) Receive a black and white signal. (color off)
(2) Connect the DC voltmeter to TP-91 (B1 connector 1

pin) and TP-E (B1 connector 3 pin).

(3) Confirm that the voltage is DC134.5V±2V.

Item

Measuring

instrument

IF VCO Remote

control unit

TUNER MAIN
HIGH LEVEL
REFERENCE LEVEL
LOW LEVEL
SYNC YES

4.7.3 RF AGC

Item

Measuring

instrument

RF AGC Remote

control unit

Setting item

S45 : AGC ADJ 0~127

Test point Adjustment part Description

[10.VCO]

• Under normal conditions, no adjustment is required. And
it must not adjust without signal.

VCO transf. (T111)
[MAIN PWB]

(1) Receive a NTSC broadcast.
(2) Select the 10.VCO.
(3) It checks that turn the VCO transf. and the character

of "HIGH LEVEL" changes the color.

(4) Next, it check that turn the VCO transf. on the

contrary and the color of "LOW LEVEL" changed.
(5) At this time, it checks that "SYNC" is "YES".
(6) Turn the VCO transf. and it is made for the character

GREEN

of "REFERENCE LEVEL" to become green.

Again, it checks that "SYNC" is "YES".

Test point Adjustment part Description

[1.V/C(S)]
S45 : AGC ADJ

(1) Receive a broadcast.
(2) Select the 1.V/C(S).
(3) Select the <S45>(AGC ADJ).
(4) Press the MUTING key and turn the color off.

Variable range Initial setting value

(5) With the [VOL ] key to get the noise in the screen

picture (zero side of setting value).

63

(6) Press the [VOL ] key several times and step when

noise disappears from the screen. At this time, not to

increase the value too much.
(7) Change to other channels and make sure that there

is no irregularity.
(8) Press the [MUTING] key and get color out.

4.7.4 FOCUS

Item

Measuring

instrument

FOCUS Signal

generator

1-24 (No.52121)

Test point Adjustment part Description

FOCUS VR
[In HVT]

(1) Receive a crosshatch signal.
(2) While looking at the screen, adjust the FOCUS VR

to the vertical and horizontal lines will be clear and

Clear and fine

make fine in a detail.
(3) Make sure that the picture is in focus even when the

screen gets darkened.

4.7.5 DEFLECTION CIRCUIT

• The setting (adjustment) using the remote control unit is made on the basis of the initial setting values.

• The setting values which adjust the screen to the optimum condition can be different from the initial setting values.

Item

V. POSITION &
V. SIZE

Screen
size

92%

Measuring
instrument

Test point Adjustment part Description

Signal
generator

Remote
control unit

VERTICAL SIZE ADJUSTMENT

[2.DEF(D)]
D05 : V PHASE
D07 : V SIZE

V. CENTER SW
(S421)
[MAIN PWB]

Picture
size

(100%)

(1) Receive a crosshatch signal.
(2) Select the 2.DEF(D).
(3) Select the <D05>(V PHASE) and it checks that the

value of <D05> is 0.

(4) Adjust the V. CENTER SW to become the signal

center agree with the CRT vertical center.

(5) Then adjust the <D07>(V SIZE) to the vertical

screen size become the values given below (bottom
of screen is to be located within the 85%~95%
range).

Initial setting valueAdjustment item

D05 V PHASE

D07 V SIZE

Setting item

0

70

Adjustment value

92.0%V.SCREEN SIZE

(No.52121)1-25

Item

H. SIZE /
H. POSITION /
SIDE PIN

Measuring

instrument

Signal
generator

Remote
control unit

A

Test point Adjustment part Description

[2.DEF(D)]
D03 : H POSITION
D15 : H SIZE
D23 : EW PARA
D19 : EWCR TOP
D21 : EWCR BTM

(1) Receive a circle pattern signal.
(2) Select the 2.DEF(D).
(3) Adjust left-right center with <D03>(H POSITION) to

become screen center agree with CRT center (A=A'

as shown in figure).
(4) Receive a cross-hatch signal.
(5) Adjust the horizontal size with <D15>(H SIZE) to

become the value given below.
(6) Adjust the <D23>(EW PARA) to the vertical lines

A'

become straight.
(7) It check that horizontal size is not illegal.
(8) When the vertical lines of 4 corner does not turn into

a straight, adjusts them with <D19>(EWCR TOP)

and <D21>(EWCR BTM) to correctly.

Initial setting valueAdjustment item

H POSITION ADJUSTMENT

Screen size 92%

Picture size 100%

HORIZONTAL SIZE ADJUSTMENT

Straight Straight

D03 H POSITION

D15 H SIZE

D23 EW PARA

D19 EW CR TOP

D21 EW CR BTM

Setting item

16

32

36

12

15

Adjustment value

92.0%H.SCREEN SIZE

1-26 (No.52121)

SIDE PINCUSHION ADJUSTMENT

4.7.6 VIDEO CIRCUIT

• The adjustment using the remote control unit is made on the basis of the initial setting values.

• The setting values which adjust the screen to the optimum condition can be different from the initial setting values.

• Do not change the initial setting values of the items not listed in ADJUSTMENT PROCEDURE.

Item

WHITE
BALANCE
(Low Light)

Measuring
instrument

Signal
generator

Remote
control unit

Test point Adjustment part Description

[7.LOW LIGHT]
S01 : BRIGHT
S11 : R CUTOFF
S12 : G CUTOFF
S13 : B CUTOFF

(1) Receive a black and white signal (color off).
(2) Select the 1.V/C(S).
(3) Confirm the initial setting value of <S11>(R CUT-

OFF), <S12>(G CUTOFF),<S13>(B CUTOFF) and
<S01>(BRIGHT)

(4) Select the 7.LOW LIGHT.
SCREEN VR
[In HVT]

(5) Display a single horizontal line by pressing the [1]

key .
(6) Turn the SCREEN VR all the way to the left.
(7) Turn the SCREEN VR gradually to the right from the

left until either one of the red, blue or green colors

appears faintly.
(8) Use the [4]~[9] keys an d adjust the other 2 colors

which except the appeared color to where the single

R CUTOFF

BRIGHT

B CUTOFF

G CUTOFFBRIGHT

horizontal line appears white.
(9) Turn the SCREEN VR to where the single horizontal

line glows faintly.

(10) Press the [2] key to release the single horizontal line.
(11) Adjust the bright level to become the black

LOW LIGHT ADJUSTMENT MODE

component shines white slightly.

(12) Confirm th at whether the color ingredient of R, G or

B is visible to the black component, which shines

white slightly.

(13) When the color ingredient can be see n, two colors

other than a visible color are adjusted, and it is made

to look white.

(14) Return the value of bright to initial setting value.
(15) Press the [3] key to exit the WHITE BALANCE

MODE.

SINGLE HORIZONTAL LINE

Setting item

S11 : R CUT OFF

S12 : G CUT OFF 30

S13 : B CUT OFF 30

S01 : BRIGHT 64

Initial setting value

30

REMOTE CONTROL UNIT

H.LINE ON

R CUTOFF G CUTOFF B CUTOFF

R CUTOFF G CUTOFF B CUTOFF

H.LINE OFF EXIT

(No.52121)1-27

Item

WHITE
BALANCE
(High Light)

Measuring

instrument

Test point Adjustment part Description

Signal
generator

Remote
control unit

R DRIVE B DRIVE

[8.HIGH LIGHT]
S14 : R DRIVE
S15 : B DRIVE

(1) Receive a NTSC black and white signal (color off).
(2) Select the 1.V/C(S).
(3) Confirm the initial setting value of <S14> (R DRIVE)

and <S15> (B DRIVE).
(4) Select the 8.HIGH LIGHT.
(5) If they are differ, set the <S14> and <S15> to the

correct initial setting value in the 1. V/C(S).
(6) Adjust the screen color to white with the [4], [6], [7]

and [9] keys.

REMOTE CONTROL UNIT

EXIT

HIGH LIGHT adjustment mode

DRIVE ADJUSTMENT

S14 : R DRIVE

S15 : B DRIVE

SUB BRIGHT Remote

control unit

BRIGHT ADJUSTMENT

S01 : BRIGHT

SUB
CONTRAST

PICTURE ADJUSTMENT

Remote
control unit

S02 : PICTURE

Initial setting value

64

64

[1. V/C(S)]
S01 : BRIGHT

Initial setting value

64

[1. V/C(S)]
S02 : PICTURE

Initial setting value

55

R DRIVE

R DRIVE

B DRIVE

B DRIVE

• White balance (low light and high light) adjustment
should be done.

(1) Receive a NTSC broadcast.
(2) Select the 1. V/C(S).
(3) Select <S01>(BRIGHT).
(4) Confirm the initial setting value of the <S01>.
(5) If the brightness is not the best with the initial setting

value, make fine adjustment of the <S01> until you
get the optimum brightness.

• Bright adjustment should be done.

(1) Receive a NTSC broadcast.
(2) Select the 1. V/C(S).
(3) Select <S02>(PICTURE).
(4) Confirm the initial setting value of the <S02>.
(5) If the contrast is not the best with the initial setting

value, make fine adjustment of the <S02> until you
get the optimum contrast.

1-28 (No.52121)

Item

Measuring
instrument

SUB COLOR Remote

control unit

Test point Adjustment part Description

[1. V/C(S)]
S03 : COLOR

[ Method of adjustment without measuring ins trument ]

(1) Receive a broadcast.
(2) Select the 1. V/C(S).
(3) Select <S03>(COLOR).
(4) Confirm the initial setting value of the <S0 3>.
(5) If the color is not the best with the Initial setting

value, make fine adjustment of the <S03> until you
get the optimum color.

Setting item Initial setting value

Signal
generator

Oscilloscope
Remote

control unit

Y

W

C

TP-B
TP-E
[CRT SOCKET
PWB]

G

R

B

M

[1. V/C(S)]
S03 : COLOR

(

)

0V

(A)

)

(

S03 : COLOR

55

[ Method of adjustment using measuring instrument ]

(1) Input the full color bar signal includes the 75% white.
(2) Select the 9. RF AFC.
(3) Turn the AFC item to off, and exit fro m the 9. RF

AFC.
(4) Select the 1. V/C(S).
(5) Select <S03>(COLOR).
(6) Confirm the initial setting valu e of the <S03> given

above.
(7) Connect the oscilloscope between TP-B and TP-E.
(8) Adjust <S03> and bring the value of (A) in the

illustration to the voltage shown in the table bellow

(voltage difference between white and blue).
(9) Exit from the 1. V/C(S).

(10) Select the 9. RF AFC.
(11) Turn the AFC item to on.

Voltage difference [V]

Model name

AV-32D104 /AYA
AV-32D304 /AYA

(A):W~B

+20V

AV-32D104 /ARA
AV-32D304 /ARA

AV-32D104 /AMA
AV-32D304 /AMA

+18V

+20V

(No.52121)1-29

Item

Measuring

instrument

SUB TINT Remote

control unit

Test point Adjustment part Description

[1. V/C(S)]
S04 : TINT

[ Method of adjustment without m easuring instrument ]

(1) Receive a broadcast.
(2) Select the 1.V/C(S).
(3) Select <S04>(TINT).
(4) Confirm the initial setting value of the <S04>.
(5) If the tint is not the best with the Initial setting value,

make fine adjustment of the <S04> until you get the
optimum color.

Setting item Initial setting value

Signal
generator

Oscilloscope
Remote

control unit

Y

W

C

TP-B
TP-E
[CRT SOCKET
PWB]

G

R

B

M

[1. V/C(S)]
S04 : TINT

)

(

0V

(B)

)

(

S04 : TINT

64

[ Method of adjustment using measuring instrument ]

(1) Input the full color bar signal includes the 75% white.
(2) Select the 9. RF AFC.
(3) Turn the AFC item to off, and ex it from the 9. RF

AFC.
(4) Select the 1.V/C(S).
(5) Select <S04>(TINT).
(6) Confirm the initial setting value of the <S04> given

above.
(7) Connect the oscilloscope between TP-B and TP-E.
(8) Adjust <S04> and bring the value of (B) in the

illustration to the voltage shown in the table bellow

(voltage difference between white and magenta).
(9) Exit from 1.V/C(S).

(10) Select the 9. RF AFC.
(11) Turn the AFC item to on.

Voltage difference [V]

Model name

AV-32D104 /AYA
AV-32D304 /AYA

(B):W~M

+12V

1-30 (No.52121)

AV-32D104 /ARA
AV-32D304 /ARA

AV-32D104 /AMA
AV-32D304 /AMA

+2V

+4V

4.7.7 MTS CIRCUIT

Item

MTS INPUT
LEVEL

Remote
control unit

check

Measuring
instrument

Test point Adjustment part Description

[3.SOUND(A)]
A01 : IN LEVEL

(1) Select the 3.SOUND(A).
(2) Select the <A01>(IN LEVEL).
(3) Verify that the <A01> is set at its initial setting value.

MTS
SEPARATION

1 cycle

TV audio
multiplex
signal
generator

Oscilloscope
Remote

control unit

L-Channel
signal waveform

R OUT
L OUT
[AUDIO OUT]

R-Channel
crosstalk portion

Minimum

[3.SOUND(A)]
A02 : LOW SEP
A03 : HI SEP

Setting item

A01 : IN LEVEL

Initial setting value

10

(1) Input the stereo L signal (300Hz) from the TV audio

multiplex signal generator to the antenna terminal.

(2) Connect an oscilloscope to R OUT pin of the AUDIO

OUT, and display one cycle portion of the 300Hz

signal.
(1) Select the 3.SOUND(A).
(2) Select the <A02>(LOW SEP).
(3) Confirm the initial setting value of the <A0 2>.
(4) Adjust the <A02> so that the stroke element of the

300Hz signal will become minimum.
(5) Change the connection of the oscilloscope to L OUT

pin of the AUDIO OUT, and enlarge the voltage axis.
(6) Change the signal to 3kHz, an d similarly adjust the

<A03>(HI SEP).

Setting item Initial setting value

A02 : LOW SEP

A03 : HIGH SEP

32

32

(No.52121)1-31

4.7.8 PURITY AND CONVERGENCE
 PURITY ADJUSTMENT

(1) Demagnetize CRT with the demagnetizer.
(2) Loosen the retainer screw of the deflec tion yoke.
(3) Remove the wedges.
(4) Input a green raster signal from the signal generator, and

turn the screen to green raster.
(5) Move the deflection yoke backward.
(6) Bring the long lug of the purity magnets on the short lug and

position them horizontally. (Fig.2)
(7) Adjust the gap between two l ugs so that the GREEN RAS-

TER will come into the center of the screen. (Fig.3)
(8) Move the deflection yoke forward, and fix the position of the

deflection yoke so that the whole screen will become green.
(9) Insert the wedge to the top side of the deflection yoke so that

it will not move.

(10) Input a crosshatch signal.
(11) Verify that the screen is horizontal.
(12) Input red and blue ra ste r signal s, and make sure that puri ty

is properly adjusted.

WEDGE

CRT

P/C MAGNETS

P : PURITY MAGNET
4 : 4 POLES (convergence magnets)
6 : 6 POLES (convergence magnets)

DEFLECTION

YOKE

P

46

P / C

MAGNETS

Fig.1

Long lug

Short lug

(FRONT VIEW)

PURITY MAGNETS

Bring the long lug over the short lug
and position them horizontally.

Fig.2

GREEN RASTER

CENTER

Fig.3

1-32 (No.52121)

 STATIC CONVERGENCE ADJUSTMENT

(1) Input a crosshatch signal.
(2) Using 4-pole convergence magnets, overlap the red and

blue lines in the center of the screen (Fig.1) and turn them
to magenta (red/blue).

(3) Using 6-pole convergence magnets, overla p the magenta

(red/blue) and green lines in the center of the screen and
turn them to white.

(4) Repeat 2 and 3 above, and make best convergence.

(FRONT VIEW)

 DYNAMIC CONVERGENCE ADJUSTMENT

(1) Move the deflection yoke up and down and overlap the lines

in the periphery. (Fig. 2)

(2) Move the deflection yoke left to right and overlap the lines in

the periphery. (Fig. 3)

(3) Repeat 1 and 2 above, and make best convergence.

• After ad justment, fix the wedge at the orig inal posi tion. Fasten
the retainer screw of the deflection yoke. Fix the 6 magnets with
glue.

(FRONT VIEW)

BLUE

GREEN

RED

(FRONT VIEW)

GREEN

RED

RED

BLUE

BLUE

Fig.1

GREEN

GREEN RED

BLUE

Fig.2

BLUE

GREEN

RED

RED

GREEN

BLUE

RED
GREEN
BLUE

Fig.3

BLUE
GREEN
RED

(No.52121)1-33

4.7.9 HOW TO CHECK THE HIGH VOLTAGE HOLD DOWN CIRCUIT

4.7.9.1 HIGH VOLTAGE HOLD DOWN CIRCUIT

After repairing the high voltage hold down circuit.
This circuit shall be checked to operate correctly.

4.7.9.2 CHECKING OF THE HIGH VOLTAGE HOLD DOWN CIRCUIT

(1) Turn the power switch on.
(2) As shown in figure, set the resistor (between [S1] connector [2] and [3]).
(3) Make sure that the screen picture disappears.
(4) Temporarily unplug the powe r plug.
(5) Remove the resistor (between [S1] connector [2] and [3]).
(6) Again plug the power plug, make sure that the normal picture is di splayed on the screen.

All model : 21.0 k 105 1/4W

RESISTOR

Relay

POWER
ON/OFF

D535

R532

R533

Q531

R538

Q532

R534

C533

3 2 1

X-RAY2X-RAY1

R535

C525

CONNECTOR

S1

R525R537D531

D525

Heater

RESISTOR

L521

4

T502

HVT

1-34 (No.52121)

SECTION 5

TROUBLE SHOOTING

This service manual does not describe TROUBLE SHOOTING.

(No.52121)1-35

JVC SERVICE & ENGINEERING COMPANY OF AMERICA

DIVISION OF JVC AMERICAS CORP.

www.jvcservice.com(US Only)

JVC CANADA INC.

Head office : 21 Finchdene Square Scarborough, Ontario M1X 1A7 [phone]

(No.52121)

Printed in Japan

WPC