JVC AV-27F704/ASA, AV-27F704/AZA, AV-32F704/AYA, AV-32F704/AZA, AV-36F704/AYA Service Manual

SERVICE MANUAL

COLOR TELEVISION

5211320036

AV-27F704/ASA, AV-27F704/AZA,
AV-32F704/AYA, AV-32F704/AZA,
AV-36F704/AYA

BASIC CHASSIS

GJ2

INPUT

V.STATUS

ASPECT

LIGHT

C.C.

RM-C1252G

TABLE OF CONTENTS

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

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

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

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

5 TROUBLE SHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-38

COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITED

No.52113

2003/6

SPECIFICATION

Items

Dimensions (W × H × D)

Mass 43.0kg (94.6Ibs) 64.0kg (140.8Ibs) 86.0kg (189.2Ibs)
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 160W ←
Picture Tube (Visible size) 68cm (27”)

High Voltage 30.0kV ±1.3kV 31.4kV ±1.3kV ←
Speaker 5cm × 12cm (2" × 4-3/4"), Oval type × 2
Audio Power Output 5W + 5W
Antenna Terminal (VHF / UHF) F-type connector, 75 Ω unbalanced
Input1 (Rear) Video 1V(p-p), negative sync, 75 Ω, RCA pin jack × 1

Input2 (Rear) Video 1V(p-p), negative sync, 75 Ω, RCA pin jack × 1

Component Video Y : 1V(p-p), negative sync, 75 Ω, RCA pin jack × 1

Input3 (Front) Video 1V(p-p), negative sync, 75 Ω, RCA pin jack × 1

Audio Output (Fix) 500mV(rms)(-4dBs), low Impedance, (400kHz when modulated 100%),

AV COMPULINK lll 3.5mm mini jack × 1
Remote Control Unit RM-C1252G (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)

S-video Mini DIN 4-pin × 1

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

Audio 500mV(rms)(-4dBs), high impedance, RCA pin jack × 2

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

Audio 500mV(rms)(-4dBs), high impedance, RCA pin jack × 2

Audio 500mV(rms)(-4dBs), high impedance, RCA pin jack × 2

RCA pin jack × 2

AV-27F704 AV-32F704 AV-36F704

75.8 cm × 59.3 cm × 50.0cm

×

(29-7/8"

(H : 54.4cm × W : 41.8cm)

23-3/8" × 19-3/4")

Measured diagonally

87.7 cm
(34-5/8"

(H : 65.6cm × W : 49.6cm)

Contents

×

69.9 cm × 56.5cm

×

27"-5/8 × 22-1/4")

80cm (32”)

Measured diagonally

96.7 cm
(38-1/8"

(H : 74.0cm × W : 55.9cm)

×

77.0 cm × 61.0cm

×

30-3/8" × 24-1/8")

90cm (36”)

Measured diagonally

Design & specifications are subject to change without notice.

1-2 (No.52113)

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 (NEU-

TRAL) 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 L IVE : ( ) 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 B1 POWER
SUPPLY check).

(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 10kΩ 2W resistor to the anode button.

(9) When service is required, observe the original lea d 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.

(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 1100V AC
(r.m.s.) for a period of one second.

(. . . . Withstand a voltage of 1100V AC (r.m.s.) to an appliance rat-

ed 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.52113)1-3

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

2.1 FEATURES

• New chassis (GJ2) design enables use of a single board with
simplified circuitry.

• Users can make fun to connect the DVD player with the
component video signal input terminal.

• Provided with miniature tuner (TV/CATV).

• Multifunctional remote control permits picture adjustment.

• Adoption of the CHANNEL GUARD function prevents the
specific channels from being selected, unless the "ID number"
is key in.

2

C bus control utilizes single chip ICs.

•I

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.

• Adoption of the VIDEO STATUS / THEATER PRO. functi on.

• Adoption of the ON/OFF TIMER and SLEEP TIMER function.

• Built-in V-CHIP system.

• Closed-caption broadcasts can be viewed.

• HYPER-SURROUND system.

• S-VIDEO input terminal for taking best advantage of Super
VHS.

• Digital Comb filter Improved picture quality.

• Adoption of the ASPECT MODE (4:3/ 16:9) function.

MODEL NAME

AV-27F704
or AV-32F704
or AV-36F704

AC 120V 60Hz

MODEL NO.

TV SCREEN SIZE : DIAGONAL

CHASSIS NO.
MANUFACTURED
SERIAL NO.

W

INCHES

ME

VIDEO EQUIPMENT

4C43

DISTINGUISH NAME

ASA or AZA or AYA

1-4 (No.52113)

2.3 TECHNINAL INFORMATION

2.3.1 SYSTEM BLOCK DIAGRAM

REMOCON

REMOCON

RECEIVER

IC702

MEMORY

SCL0 SDA0

SCL1

SDA1

IC5001

MTS

TONE/VOL

2.3.2 MAIN MI-COM (CPU) PIN FUNCTION

Pin

Pin name

No.

AFT2

1

AFT1

2

KEY

3

uP DVss

4

Reset

5

Xout

6

Xin

7

TEST

8

uP_DVDD

9

AGC_MUTE

10

UP_VVss

11

TV_HGND

12

FBP_SCP

13

Hout

14

H_Vcc_9V

15

HAFC_1

16

Vsaw

17

Vout

18

EW_out

19

Xray

20

Ys

21

Cb_input

22

Y_input

23

Cr_input

24

DVcc_3.3V

25

V3in/Cin

26

EHT_in

27

28

V2in/Y

I/O

Not used

I

AFT voltage for tuner (Tuning frequency control)

I

Key scan for front control [No signal : H]

I

GND

-

CPU reset

I

CPU system clock : 8MHz oscillation

O

CPU system clock : 8MHz oscillation

I

GND

-

5V

-

AGC muting for tuner (when channel select) [Muting : H]

O

GND

-

GND

-

Flyback pulse (H. pulse)

I

H. drive (oscillation)

O

9V (for H. oscillation start)

-

H. AFC filter

-

V. saw filter

-

V. drive

O

Parabola waveform (for sidepin correection)

O

X-ray detection (for protection) [Detection : H]

I

Not used

I

Cb (external) signal

I

Y (external) signal

I

Cr (external) signal

I

3.3V

-

Chroma signal (for YC separation output)

I

Not used

I

Y signal (for YC separation output)

I

Function

IC201

MAIN MI-COM /

VIDEO PROCESS /

DEF. PROCESS

SCL0 SDA0

SCL0 SDA0 SCL0 SDA0

IC5501

LATCH&
AV SW

IC5201

3-LINE YC SEP.

Pin

Pin name

No.

YCD_GND

29

Vin1

30

ABCL

31

Monitor

32

Black_Det

33

SVM_out

34

APL_Fil

35

APC_Fil

36

3.58MHz

37

YC_Vcc_5V

38

R_out

39

G_out

40

B_out

41

RGB_Vcc_9V

42

IK in

43

TV_DGND

44

uP_MPAGND

45

uP_MPAVDD

46

MAIN_POWER

47

HAZARD

48

SDAO

49

SCLO

50

SDA1

51

AGC ADJUST

52

SCL1

53

LED

54

REMOCON

55

COMPULINK

56

AFT1

IC101

IF DET

SCL0 SDA0

TU001

TUNER

SCL0 SDA0

IC502

D-A CONVERTER

[AV-36F704]

I/O

GND

-

Not used

I

Current for automatic beam (brightness)/contrast limit

I

Not used

O

Black level detection filter

-

Y signal for scan velocity modulation

O

Average picture level filter

-

Automatc phase control filter

-

Color sub carrier (3.58MHz) for 3-line digital comb filter [IC5201]

O

5V (for video process circuit)

-

R signal

O

G signal

O

B signal

O

9V (for RGB process circuit)

-

Not used

I

GND

-

GND

-

5V

-

Power on/off switching control [Powen on : L]

O

B1 over cuurent / V. amplitude detection (for protect) [Defective : H]

I

Data for Inter IC control bus (for various devices)

I/O

Clock for Inter IC control bus (for various devices)

O

Data for Inter IC control bus (for main memory)

I/O

AGC adjustment (for tuner) <S45 in Service menu>

O

Clock for Inter IC control bus (for main memory)

O

POWER / ON TIMER LED lndication [lighting : L]

O

Remote control sensor input [No input : H]

I

AV COMPULINK lll control [No input : H]

I

Function

(No.52113)1-5

2.4 MAIN DIFFERENCE LIST Item

CRT (Pictru Tube) Size 27V 32V 36V
CRT Suface Treatment Crear + Coating Tint Crear + Film Tint
Electric Gun Non-DAF DAF DAF
High Voltage 30kV±1.3kV 31.4kV±1.3kV 31.4kV±1.3kV
Dimensions (W × H × D) 758mm × 593mm × 500mm

(29-7/8" × 23"-3/8" × 19-3/4")
Mass 43.0 kg (94.6 Ibs) 64.0 kg (140.8 Ibs) 86.0 kg (189.2 Ibs)
MAIN PWB ASSY SGJ-1503A-M2 SGJ-1504A-M2 SGJ-1501A-M2 SGJ-1505A-M2 SGJ-1502A-M2
DAF PWB ASSY --- --- SGJ-2003A-M2 SGJ-2002A-M2 SGJ-2001A-M2
CRT SOCKET PWB ASSY SGJ-3002A-M2 SGJ-3006A-M2 SGJ-3004A-M2 SGJ-3003A-M2 SGJ-3001A-M2
FRONT CONTROL

PWB ASSY
PICTURE TUBE (ITC) A68QCP893X003
DEG COIL QQW0090-001 ← QQW0107-001 ← QQW0122-001
FRONT CABINET ASSY LC10878-006C-A ← LC11048-008D-A ← LC11153-006B-A
REAR COVER LC10880-001D-A ← LC11042-001D-A ← LC11155-001D-A

SGJ-6001A-M2 ← SGJ-6002A-M2 ← SGJ-6003A-M2

AV-27F704 AV-32F704 AV-36F704

ASA AZA AYA AZA AYA

967mm × 770mm × 610mm

(38-1/8" × 30"-3/8" × 24-1/8")

A68QCU754X62N

877mm × 699mm × 565mm

(34-5/8" × 27"-5/8" × 22-1/4")

A80AJZ90X03 A80ERF042X17 A90AJX90X02

1-6 (No.52113)

2.5 FUNCTIONS  FRONT PANEL CONTROL

a

6

VIDEO L / MONO - AUDIO - R

1

a

INPUT-3 TERMINAL

1

VIDEO

2

AUDIO L/MONO

3

AUDIO R

 REAR TERMINAL

INPUT- 3

2

3

MENU

4

432 1

5

OPERATE

VOLUMECHANNEL

7

4

MENU( ) button

5

OPERATE( / ) button

6

CHANNEL(-/+) buttons

7

VOLUME(-/+) buttons

8

REMOTE CONTROL SENSOR

9

POWER ON/ ON TIMER INDICATOR

10

POWER SW button

ON TIMER

8

9

A B

POWER

10

(for MENU)

A

INPUT-1 TERMINAL

1

S-VIDEO

2

VIDEO

3

AUDIO L/MONO

4

AUDIO R

B

5
7

6

14

12

C

11

13

9

810

INPUT-2 TERMINAL

5

VIDEO

6

AUDIO L/MONO

7

AUDIO R

8

COMPONENT-Y

9

COMPONENT-P

10

COMPONENT-P

C

AUDIO OUTPUT TERMINAL (Fixed)

11

AUDIO L

12

AUDIO R

13

AV COMPULINK TERMINAL

14

ANTENNA TERMINAL 75 (VHF/UHF)

B
R

(No.52113)1-7

 REMOTE CONTROL UNIT

1

POWER key

20

21

10

11

2

INPUT key:

1

2

3

5

7

9

INPUT

4

V.STATUS

6

8

ASPECT

RM-C1252G

LIGHT

C.C.

14

12

13

15

16

17

18

19

3

DISPLAY key

4

SLEEP TIMER key:

5

HYPER SUR. key

6

V. STATUS key:

7

THEATER PRO key

8

ASPECT key:

9

MUTING key

10

VOL+/- & /

11

MENU key

12

Channel number keys

13

RETURN+ key

14

100+ key

15

LIGHT key

16

C.C. (CLOSED CAPTION) key:

17

CH+/- & /

18

EXIT key

TV VIDEO1 VIDO2 V2-COMPONENT VIDEO3

0 15 30 165 180

STANDARD DYNAMIC THEATER GAME

Can be changed to 4:3 and 16:9 screen

(SERVICE MENU)

(SERVICE MENU)

keys

OFF CAPTION TEXT

keys

VCR / DVD control keys

19

20

VCR / DVD switch

21

TV / CATV switch

NOTE

The CH+/- keys and VOL+/- keys operate
CHANNEL and VOLUME normally.
These keys are also used to navigate SERVICE
MENU as the / and / keys.

1-8 (No.52113)

SECTION 3

DISASSEMBLY

3.1 DISASSEMBLY PROCEDURE

3.1.1 REMOVING THE REAR COVER
< AV-27F704, AV-32F704 >

(1) Disconnect the power plug from wall outlet.
(2) As shown in the Fig.1, remove the 12 screws [A].
(3) Withdraw the REAR COVER backward.

< AV-36F704 >

(1) Disconnect the power plug from wall outlet.
(2) As shown in the Fig.1, remove the 13 screws [A].
(3) Withdraw the REAR COVER backward.

3.1.2 REMOVING THE AV TERMINAL BOARD

• Remove the REAR COVER.
(1) As shown in Fig.1, remove the 4 screws [B].
(2) Withdraw the AV TERMINAL BOARD toward you.

3.1.3 REMOVING THE CHASSIS

• Remove the REAR COVER.

• Remove the AV TERMINAL BOARD.
(1) Slightly raise the both sides of CHASSIS by hand.
(2) Remove the 2 claws under the both side of the CHASSIS

from the front cabinet.

(3) Withdraw the CHASSIS backward.

(If necessary, remove the wire clamp, connectors etc.)

3.1.7 CHECKING THE CHASSIS

To check the PW Board from back side.

(1) Pull out the CHASSIS (refer to REMOVING THE CHASSIS).
(2) Erect the CHASSIS vertically so that you can easily check

the back side of the PW Board.

CAUTION :

• When erecting the CHASSIS, be careful so that there will be
no contacting with other PW Board.

• Before turning on power, make sure that the wire connector
is properly connected.

• When conducting a check with power supp li ed, be sure

to confirm that the CRT EARTH WIRE (BRAIDED ASS'Y)
is connected to the CRT SOCKET PWB.

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.

3.1.4 REMOVING THE SPEAKER

• Remove the REAR COVER.

< AV-27F704 >

(1) As shown in Fig.1, Re move th e 4 screws [C] and taking

out the SPEAKER.

(2) Follow the same steps when removing the other hand

SPEAKER.

< AV-32F704, AV-36F704 >

(1) As shown in Fig.1, remove the 2 screws [D].
(2) Remove the 2 screws [E] and taking out the SPEAKER.
(3) Follow the same steps when removing the other hand

SPEAKER.

NOTE :

When remove the 2 screws [D] of the SPEAKER, taking out
the lower side screw first, and then takeing out the upper
one.

3.1.5 REMOVING THE LED & POWER SW PWB

• Remove the REAR COVER.
(1) Remove the 2 screws [F] as shown in Fig.1.
(2) Withdraw the LED & POWER SW PWB toward you.

*If necessary, remove the wire clamp, connector etc.

3.1.6 REMOVING THE FRONT CONTROL PWB

• Remove the REAR COVER.
(1) Remove the 2 screws [G] as shown in Fig.1.
(2) Withdraw the FRONT CONTROL PWB toward you.

*If necessary, remove the wire clamp, connector etc.

(No.52113)1-9

FRONT CABINET

AV-32F704 / AV-36F704

( 2)

E

SPEAKER

SPACER

AV-27F704

C

( 4)

REAR COVER

LED&POWER
SW PWB

CRT
SOCKET
PWB

F

( 2)

CLAW

SPEAKER
HOLDER

FRONT
CONTROL
PWB

( 2)

G

MAIN PWB

AV
SELECTOR
PWB

CLAW

D

( 2)

TUNER

DAF PWB

CHASSIS

HVT

POWER CORD

AV TERMINAL
BOARD

1-10 (No.52113)

Fig.1

A

( 13)

B

( 4)

REAR COVER

A

( 12)

AV-27F704 / AV-32F704AV-36F704

NOTE
This exploded view describes about the AV-36F704.
You can use the exploded view for disassembling the
AV-27F704, AV-32F704 in the same step as for this one.

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

APPROX.
35cm

BOX
TYPE
SCREW
DRIVER

 FOR AV-32F704/AZA model only

CAUTION FOR DEGAUSSING WORKS

Whenever degaussing works are required due to
distorted images and colors caused by the
replacement of the CRT or other external magnetic
forces, self-degaussing (internal degaussing) should
be carried out without fail instead of degaussing the
monitor from the outside.
Because of the characteristics of the CRT used in this
monitor , the distorted images and colors may worsen
if degaussing the monitor from the outside has been
performed.
Even if external degaussing works have been carried
out, self-degaussing should be performed by turning
the power on the monitor.
When you want to perform self-degaussing of the
monitor whose power is already turned on, turn of f the
power and wait for about 10 minutes before turning the
power on the monitor again for self-degaussing.

CABINET

CRT

CRT
CHANGE T ABLE

Fig.5

(No.52113)1-11

3.3 MEMORY IC REPLACEMENT

3.3.1 MEMORY IC

This TV uses memory IC.
This memory IC stores data for proper operation of the video and deflection circuits.
When replacing the memory IC, be sure to use an IC containing this (initial value) data.

3.3.2 MEMORY IC REPLACEMENT PROCEDURE

1. Power off

Switch off the power and disconnect the power cord from the
wall outlet.

2. Replace the memory IC

Be sure to use a memory IC written with the initial setting data.

3. Power on

Connect the power cord to the wall outlet and switch on the
power.

4. Confirm the system constant value

• 12.SYSTEM (SYS) do not adjust normally.

• The adjustment should not be done without signal.

 How to enter the SERVICE MENU.

Confirm that the setting of TV/CATV SW is at the "TV" side
and the setting of VCR/DVD SW is at the "VCR" side.

(1) Before disappear the display of SLEEP TIMER

settings, simultaneously press the [DISPLAY] key and
[VIDEO STATUS] key of the remote control unit.

(2) The SERVICE MENU screen will be displayed as

shown Fig.1.

 How to enter the 12. SYSTEM(SYS).

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

12.SYSTEM(SYS) item with [CH/] keys, and the
[VOL/] keys is pressed, the screen will be
displayed as shown in Fig.2.

(2) Refer to the "12.SYSTEM(SYS)" table and check the

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

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

memory IC automatically.

(4) Press the [EXIT] key to return the SERVICE MENU

screen.

(5) Then press the [EXIT] key again to return the no rmal

screen.

5. Receiving channel setting

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

6. User settings

Check the user setting items according to the "FACTORY
SETTING ITEM" table.
Where these do not agree, refer to the OPERATING
INSTRUCTIONS (USER'S GUIDE) 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

12.SYSTEM (SYS)

SYS01 VIDEO IN

DEF(D)

2.

4.

OTHERS(F)

6.

3L Y/C(LYC)

8.

HIGH LIGHT

10.

VOC

12.

SYSTEM(SYS)

Fig.1

Fig.2

EXIT BY



EXIT

KEY ASSIGNMENT OF REMOTE CONTROL UNIT

SLEEP TIMER key

DISPLAY &

VIDEO STATUS key

V.STATUS

ASPECT

VOL / key

CH / key

LIGHT

C.C.

1-12 (No.52113)

EXIT key

[RM-C1252G]

3.3.3 FACTRY SETTING VALUE
Setting item Setting value Setting item Setting value

REMOTE CONTROLLER KEYS

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

SETTING OF MENU

PICTURE CLOCK / TIMERS

STANDARD

TINT 0 ←← D.S.T. : OFF
COLOR 0 ← +7 ON / OFF TIMER OFF
PICTURE 0

BRIGHT 0 ←← LANGUAGE ENG
DETAIL 0 +10 +7 FRONT PANEL LOCK OFF
COLOR TEMPERATURE LOW HIGH LOW AUTO SHUT OFF OFF
NOISE MUTING ON CLOSED CAPTION CC1 / T1

SOUND CHANNEL SUMMARY Setting Channel

BASS Center V-CHIP OFF
TREBLE Center SET LOCK CODE (0000)
BALANCE Center XDS ID ON
MTS STEREO PULITY [AV-36F704 only] Center

DYNAMIC

+14(27")

+17(32", 36")

GAME SET CLOCK MANUAL

TIME ZONE : PACIFIC

-10

INITIAL SETUP

Guard channel : All OFF

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 adjustment mode

3.SOUND(A) A01~A08 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~SYS27 This mode is used when setting up the whole system

[Fixed value. Do not adjust]

(No.52113)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.52113)

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 0
BASS, TREBLE, BALANCE Center
MTS STEREO
HYPER SURROUND 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

CHECK ITEM

• B1 POWER SUPPLY check

TUNER / IF CIRCUIT

• IF VCO adjustment

• RF. AGC adjustment

FOCUS

• FOCUS adjustment

DEFLECTION CIRCUIT

• V. SIZE / V. POSITION (4:3) adjustment

• V. SIZE / V. POSITION (16:9) adjustment

• H. POSITION / H. SIZE / SIDE PIN [ (4:3) & (16:9) ] adjustment

VIDEO CIRCUIT

• WHITE BALANCE(High Light & Low Light) adjustment

• SUB BRIGHT adjustment

• SUB CONTRAST adjustment

• SUB COLOR adjustment

• SUB TINT adjustment

MTS CIRCUIT

• MTS INPUT LEVEL adjustment

• MTS SEPARATION adjustment

HIGH VOLTAGE HOLD DOWN CIRCUIT

(No.52113)1-15

4.4 ADJUSTMENT LOCATIONS

LED & POWER SW PWB

POWER/

ON TIMER

SENSOR

POWER

SW

S7701

D7701

LED

B

SPEAKER
L/R

SS

IC621

AV SEL PWB

CN5006

CN5001

CN007

IC702

IC101

memory IC

T111

MAIN PWB

CN004

IC201

TUNER

FRONT CONTROL PWB

R

INPUT 3

L/MONO

VIDEO

CN6006

MENUVOL CH

CN6007

B

FROUT

FROUT

IC911

DEG

F901

PW

CRT

WHT

BLK

POWER
CORD

DAF PWB

K

CP

Q

DAF

IC421

K

HV

CP

Q

B1

AV-27F704

INPUT TERMINAL

VCO

C

for TEST

CN3004

CRT SOCKET PWB

CN3005

AV-32F704
AV-36F704

TP-91

(B1)

S1

TP-91

TP-E
( )

S1

CN005

E1

DAF

(B1)

B1

13

CRT EARTH

(BRAIDED ASS'Y)

TP-E

( )

FOCUS

SCREEN

153

AV-27F704

AV-32F704

FOCUS 1
FOCUS 2

SCREEN

AV-36F704

1-16 (No.52113)

DAF PWB

(Except AV-27F704)

CRT SOCKET PWB

FRONT

Q

K

MAIN PWB

CP

K

CP

TP-R

Q

CN3004

TP-G

71

TP-E( )

T2701

DAF

DAF

TP-B

TP-E2

CN30E2

CRT EARTH

(BRAIDED ASS'Y)

CN004 CN005

TP-E1

V

1

6

CN3005

MAIN PWB

TOP

INPUT 1

INPUT 2

COMPONENT-Y

AUDIO OUT

COMPONENT-P

COMPONENT-P

AV SEL PWB

FRONT CONTROL PWB

CN6006

TOP

CN5006

B

R

CN5001

(No.52113)1-17

4.5 BASIC OPERATION OF SERVICE MENU

4.5.1 TOOL OF SERVICE MENU OPERATION

Operate the SERVICE MENU with the REMOTE CONTROL UNIT.

4.5.2 SERVICE MENU ITEMS

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 [Fixed value. Do not adjust]

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

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

8. HIGH LIGHT White balance of "HIGH LIGHT" adjustment mode

9. RF AFC RF AFC related circuit adjustment mode [Fixed value]

10. VCO VCO related circuit adjustment mode

2

11. I2C BUS I

C bus related circuit adjustment mode [Fixed value]

12. SYSTEM(SYS) This mode is used when setting up the whole system [Fixed value. Do not adjust]

4.5.3 BASIC OPERATION OF SERVICE MENU

1. How to enter the SERVICE MENU

Confirm that the setting of TV/CATV SW is at the "TV" side and
the setting of VCR/DVD SW is at the "VCR" side.

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

ER for "0" MIN

(2) Press the [DISPLAY] key and [VIDEO STATUS] key at

the same time to enter the SERVICE MENU screen.
(Fig.1)

SERV ICE MENU

1.

V/C(S)

3.

SOUND(A)

LOW LIGHT

7.
RF AFC

9.
I2C BUS

11.

SERVICE MENU

2.

DEF(D)

4.

OTHERS(F)

6.

3L Y/C(LYC)

8.

HIGH LIGHT

10.

VOC

12.

SYSTEM(SYS)

2. SERVICE MENU screen selection

(1) In SERVICE MENU (Fig.1), select any of the SUB MENU

items (1.V/C(S)/ 2.DEF(D)/ 3.SOUND(A)/ 4.OTHERS
(F)/ 6.3L Y/C(LYC)/ 7.LOW LIGHT/ 8.HIGH LIGHT/ 9.RF
AFC/ 10.VCO/ 11.I2C BUS/ 12.SYSTEM(SYS)) by the
[CH/] keys.
The letters of the selected items are displayed in yellow.

(2) With the SUB MENU item selected, press the [VOL/]

keys to display each screen.
Then the settings or verifications can be performed.

SELECT BY
OPERATE BY

Fig.1

KEY ASSIGNMENT OF REMOTE CONTROL UNIT

1)

1. How to enter
the SERVICE MENU

2. Operating
the SERVICE MENU

SLEEP TIMER key

2)

DISPLAY &
VIDEO STATUS key

1), 3)

CH / key

2), 3)

VOL / key

3)

EXIT key

3. Releasing
the SERVICE MENU

Fig.2

EXIT BY

V.STATUS

EXIT

ASPECT

LIGHT

C.C.

[RM-C1252G]

1-18 (No.52113)

3. Setting method. (Fig.3~ Fig.7)

(1) [CH/] keys

Select the SETTING ITEM

(2) [VOL/] keys

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

(3) [EXIT] key

Return to the previous screen.

RECEIVING MODE
(RF/EXT/COMP)

RF 4 : 3 STD LOW

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

WHITE BALANCE

3.AUDIO(A)

(LOW / HIGH)

ASPECT MODE
(4:3 / 16:9)

SETTING ITEM

SETTING NO.

(S:signal / D:DEF)

SETTING VALUE

VIDEO STATUSE
(STD / THEA)

A01 IN LEVEL

SETTING ITEM

SETTING NO.

SETTING VALUE

Fig.3 Fig.4

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

8.HIGH LIGHT7.LOW LIGHT

SETTING VALUESETTING ITEM

BRIGHT

R CUTOFF

G CUTOFF B CUTOFF

SETTING VALUESETTING VALUE

B DRIVER DRIVE

Fig.5 Fig.6

The setting for VCO is described in the IF VCO page of ADJUSTMENT PROCEDURE.

10.VCO

TUNER
HIGH LEVEL
REFERENCE LEVEL
LOW LEVEL
SYNC :YES

MAIN

AFC LEVEL

SYNC INPUT

Fig.7

4. Releasing the SERVICE MENU

(1) After returning to the SERVICE MENU upon completion of the setting work, press the [EXIT] key again.

(No.52113)1-19

4.5.4 SERVICE MENU FLOW CHART

SERVICE MENU

SUB 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)

RF 4 : 3 STD LOW

S01 BRIGHT

RF 4 : 3 STD LOW

D01 V FREQ

EXIT

1.V/C(S)

2.DEF(D)

7.LOW LIGHT

BRIGHT

8.HIGH LIGHT

9.RF AFC [Fixed value]

TOO HIGH GOOD TOO LOW
TUNER MAIN
AFC ON
FINE

3.SOUND(A)

A01 IN LEVEL

4.OTHERS(F)

[Fixed value. Do not adjust]

F01

6.3L Y/C(LYC)

[Fixed value. Do not adjust]

LYC01

10.VCO

TUNER MAIN
HIGH LEVEL
REFERENCE LEVEL
LOW LEVEL
SYNC : YES

11.I2C BUS [Fixed value]

I2C BUS ON

12.SYSTEM(SYS)

[Fixed value. Do not adjust]

SYS01 VIDEO

1-20 (No.52113)

4.6 INITIAL SETTING VALUE OF SERVICE MENU

(1) Adjustment of the SERVICE MENU is made on the basis of the initial setting values ; however, the new setting values which set

the screen in its optimum condition may differ from the initial setting.
(2) Do not change the initial setting values of the setting items NOT LISTED IN ADJUSTMENT PROCEDURE.
(3) --- : This mark described in each table shows "Cannot adjust it."

1.V/C(S) (1/5)
Initial setting value

AV-27F704

Setting

No.

S01 BRIGHT 64 --- --- --- --- 64 --- --- --- --­S02 PICTURE 60 --- --- --- --- 60 --- --- --- --­S03 COLOR 50 --- --- --- 52 50 --- --- --- 52
S04 TINT 68 --- --- --- 70 68 --- --- --- 70
S05 DETAIL 33 --- --- 35 40 37 --- --- 39 44
S06BRIGHT +----0+1 -2 -2 ---0+1-2-2
S07 PICT+- --- -8 -10 ±0 -5 --- -8 -10 ±0 -5
S08 COLOR +- --- 0 -3 -1 --- --- 0 -3 -1 --­S09 TINT+- --- 0 -3 +2 --- --- 0 -3 +2 --­S10 DETAIL+- --- --- 0 --- --- --- --- 0 --- ---

item

STANDARD

(4:3)

RF

STANDARD

(16:9)

ASA AZA

RF

STANDARD

(16:9)

THEATER

THEATER

(4:3)

EXTERNAL

(S, CV)

(4:3)

EXTERNAL

(COMPON ENT)

(4:3)

STANDARD

(4:3)

(4:3)

EXTERNAL

(S, CV)

(4:3)

EXTERNAL

(COMPONENT)

(4:3)

Initial setting value

AV-27F704

Setting

No.

S11
S12
S13
S14 R DRIVE 64 --- --- --- --- --- --- --- 64 --- --- --- --- --- --- --­S15 B DRIVE 64 --- --- --- --- --- --- --- 64 --- --- --- --- --- --- --­S16 R CUT+- --- ±0 ±0 ±0 -5 --- --- --- --- ±0 ±0 ±0 -5 --- --- --­S17 G CUT+- --- ±0 ±0 ±0 ±0 --- --- --- --- ±0 ±0 ±0 ±0 --- --- --­S18 B CUT+- --- ±0 ±0 ±0 -6 --- --- --- --- ±0 ±0 ±0 -6 --- --- --­S19 R DRV+- --- +5 +13 +7 ±0 --- --- --- --- +5 +13 +7 ±0 --- --- --­S20 B DRV+- --- +6 -25 -9 ±0 --- --- --- --- +6 -25 -9 ±0 --- --- --­S21
S22 BLACK ST 2 --- 2 --- --- --- --- --- 2 --- 2 --- --- --- --- --­S23 DCREST 1 --- 1 --- --- --- --- --- 1 --- 1 --- --- --- --- --­S24 DCRSW 1 --- 1 --- --- --- --- --- 1 --- 1 --- --- --- --- ---

item

R CUT OFF
G CUT OFF
B CUT OFF

NTSC MAT

RF/EXT (S,CV) EXT (COMPONENT) RF/EXT (S,CV) EXT (COMPONENT)
STANDARD THEATER STANDARD THEATER STANDARD THEATER STANDARD THEATER
LOW HIGH LOW HIGH LOW HIGH LOW HIGH LOW HIGH LOW HIGH LOW HIGH LOW HIGH

30 --- --- --- --- --- --- --- 30 --- --- --- --- --- --- --­30 --- --- --- --- --- --- --- 30 --- --- --- --- --- --- --­30 --- --- --- --- --- --- --- 30 --- --- --- --- --- --- ---

3311221133112211

ASA AZA

(No.52113)1-21

1.V/C(S) (2/5)
Initial setting value

AV-32F704

Setting

No.

S01 BRIGHT 64 --- --- --- --- 64 --- --- --- --­S02 PICTURE 60 --- --- --- --- 60 --- --- --- --­S03 COLOR 50 --- --- --- 45 50 --- --- --- 41
S04 TINT 68 --- --- --- 68 68 --- --- --- 62
S05 DETAIL 33 --- --- 35 40 33 --- --- 35 40
S06 BRIGHT +- --- 0 +1 -2 -2 --- 0 +1 -2 -2
S07 PICT+- --- -8 -10 ±0 -3 --- -8 -10 ±0 -3
S08 COLOR +- --- 0 -3 -2 --- --- 0 -3 -2 --­S09 TINT+- --- 0 -3 ±0 --- --- 0 -3 +5 --­S10 DETAIL+- --- --- 0 --- --- --- --- 0 --- ---

No.

S11
S12
S13
S14 R DRIVE 64 --- --- --- --- --- --- --- 64 --- --- --- --- --- --- --­S15 B DRIVE 64 --- --- --- --- --- --- --- 64 --- --- --- --- --- --- --­S16 R CUT+- --- ±0 ±0 ±0 -10 --- --- --- --- ±0 ±0 ±0 -10 --- --- --­S17 G CUT+- --- ±0 ±0 ±0 ±0 --- --- --- --- ±0 ±0 ±0 ±0 --- --- --­S18 B CUT+- --- ±0 ±0 ±0 -10 --- --- --- --- ±0 ±0 ±0 -10 --- --- --­S19 R DRV+- --- +5 +13 +7 ±0 --- --- --- --- +5 +13 +7 ±0 --- --- --­S20 B DRV+- --- +6 -25 -9 ±0 --- --- --- --- +6 -25 -9 ±0 --- --- --­S21
S22 BLACK ST 3 --- 2 --- --- --- --- --- 3 --- 2 --- --- --- --- --­S23 DCREST 1 --- 1 --- --- --- --- --- 1 --- 1 --- --- --- --- --­S24 DCRSW 0 --- 0 --- --- --- --- --- 0 --- 0 --- --- --- --- ---

item

Setting

item

R CUT OFF
G CUT OFF
B CUT OFF

NTSC MAT

RF

STANDARD

(4:3)

STANDARD THEATER STANDARD THEATER STANDARD THEATER STANDARD THEATER

LOW HIGH LOW HIGH LOW HIGH LOW HIGH LOW HIGH LOW HIGH LOW HIGH LOW HIGH

30 --- --- --- --- --- --- --- 30 --- --- --- --- --- --- --­30 --- --- --- --- --- --- --- 30 --- --- --- --- --- --- --­30 --- --- --- --- --- --- --- 30 --- --- --- --- --- --- ---

3311221133112211

STANDARD

(16:9)

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

AYA AZA

EXTERNAL

THEATER

(4:3)

AYA AZA

(S, CV)

(4:3)

EXTERNAL

(COMPONENT)

(4:3)

Initial setting value

STANDARD

(4:3)

AV-32F704

RF

STANDARD

(16:9)

THEATER

(4:3)

EXTERNAL

(S, CV)

(4:3)

EXTERNAL

(COMPONENT)

(4:3)

1-22 (No.52113)

1.V/C(S) (3/5)
Initial setting value

AV-36F704

Setting

No.

S01 BRIGHT 64 --- --- --- --­S02 PICTURE 60 --- --- --- --­S03 COLOR 50 --- --- --- 44
S04 TINT 68 --- --- --- 69
S05 DETAIL 33 --- --- 35 40
S06 BRIGHT +- --- 0 +1 -2 -2
S07 PICT+- --- -8 -10 ±0 -3
S08 COLOR +- --- 0 -3 -2 --­S09 TINT+- --- 0 -3 ±0 --­S10 DETAIL+- --- --- 0 --- ---

No.

S11
S12
S13
S14 R DRIVE 64 --- --- --- --- --- --- --­S15 B DRIVE 64 --- --- --- --- --- --- --­S16 R CUT+- --- ±0 ±0 ±0 -10 --- --- --­S17 G CUT+- --- ±0 ±0 ±0 ±0 --- --- --­S18 B CUT+- --- ±0 ±0 ±0 -10 --- --- --­S19 R DRV+- --- +5 +13 +7 ±0 --- --- --­S20 B DRV+- --- +6 -25 -9 ±0 --- --- --­S21
S22 BLACK ST 3 --- 2 --- --- --- --- --­S23 DCREST 1 --- 1 --- --- --- --- --­S24 DCRSW 0 --- 0 --- --- --- --- ---

item

Setting

item

R CUT OFF
G CUT OFF
B CUT OFF

NTSC MAT

RF

STANDARD

(4:3)

STANDARD THEATER STANDARD THEATER
LOW HIGH LOW HIGH LOW HIGH LOW HIGH

30 --- --- --- --- --- --- --­30 --- --- --- --- --- --- --­30 --- --- --- --- --- --- ---

33112211

STANDARD

(16:9)

Initial setting value

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

AYA

THEATER

(4:3)

AV-36F704

AYA

EXTERNAL

(S, CV)

(4:3)

EXTERNAL

(COMPON ENT)

(4:3)

(No.52113)1-23

1.V/C(S) (4/5)
Setting

No.

S25
S26 BPF F0 0 0 --­S27 KILR OFF 0 0 --­S28 KILR SEN 1 1 ---

1.V/C(S) (5/5)

No.

S29
S30 BLUE B 0 ← 000
S31
S32
S33 OSD ABL 0 ← 000
S34
S35
S36 ABL GAIN 0 ← 000
S37 ABL PNT 3 ← 333
S38 Y GAMMA 1 ← 111
S39 Y MUTE 0 ← 000
S40 SVM GAIN 3 ← 333
S41 SVM PH 1 ← 111
S42 WPL 0 ← 000
S43 COL GMM 0 ← 000
S44 V1 GAIN 4 ← 444
S45 AGC ADJ 63 ← 63 63 63
S46
S47 APC CLK 1 ← 111
S48 PIP ADJ 4 ← 8810

item

ASY SHRP

Setting

item

RGB MUTE

VIDEO SW
CMP ABCL

OSD CONT
SUB CONT

VMOFF DE

RF EXTERNAL COMPONENT

444

ASA AZA AYA AZA AYA

0 ← 000

3 ← 333
0 ← 000

7 ← 838
5 ← 555

+3 ← +3 +3 +3

Initial setting value

Initial setting value

AV-27F704 AV-32F704 AV-36F704

1-24 (No.52113)

2.DEF (D)
Initial setting value

Setting

No.

D01V FREQ003003003003003
D02AFC GAIN002002002002002
D03 H POSI 20 --- 20 20 --- 20 25 --- 25 25 --- 25 22 --- 22
D04 H POSI+- --- 0 --- --- 0 --- --- 0 --- --- 0 --- --- 0 --­D05 V PHASE 0 --- 0 0 --- 0 0 --- 0 0 --- 0 0 --- 0
D06 V PH+- --- 0 --- --- 0 --- --- 0 --- --- 0 --- --- 0 --­D07 V SIZE 90 --- 90 80 --- 80 80 --- 80 65 --- 65 80 --- 80
D08 V SIZE+- --- -30 --- --- -25 --- --- -30 --- --- -30 --- --- -30 --­D09
D10 V CENT+- --- 0 --- --- 0 --- --- 0 --- --- 0 --- --- 0 --­D11 V S CORR 9 --- 9 9 --- 9 12 --- 12 12 --- 12 11 --- 11
D12 V S CO+- --- 0 --- --- 0 --- --- 0 --- --- 0 --- --- 0 --­D13 V LIN 10 --- 10 10 --- 10 9 --- 9 9 --- 9 8 --- 8
D14 V LIN+- --- 0 --- --- 0 --- --- 0 --- --- 0 --- --- 0 --­D15 H SIZE 33 --- 33 33 --- 33 31 --- 31 31 --- 31 30 --- 30
D16 H SIZE+- --- 0 --- --- 0 --- --- 0 --- --- 0 --- --- 0 --­D17
D18
D19
D20 EWCR T+- --- 0 --- --- 0 --- --- 0 --- --- 0 --- --- 0 --­D21
D22 EWCR B+- --- 0 --- --- 0 --- --- 0 --- --- 0 --- --- 0 --­D23 EW PARA 36 --- 36 36 --- 36 35 --- 35 35 --- 35 37 --- 37
D24
D25 V EHT 0 --- 0 0 --- 0 0 --- 0 0 --- 0 0 --- 0
D26 V EHT+- --- 0 --- --- 0 --- --- 0 --- --- 0 --- --- 0 --­D27 H EHT 0 --- 0 0 --- 0 0 --- 0 0 --- 0 0 --- 0
D28 H EHT+- --- 0 --- --- 0 --- --- 0 --- --- 0 --- --- 0 --­D29 TRAPEZ 31 --- 31 31 --- 31 0 --- 36 36 --- 36 32 --- 32
D30 TRAPEZ+- --- 0 --- --- 0 --- --- 0 --- --- 0 --- --- 0 --­D31V AGC 000000000000000
D32
D33VRMP BI000000000000000

item

(4:3)

V CENTER

WVMT TOP
WVMT BTM
EWCR TOP

EWCR BTM

EW PARA+-

BLANK SW

ASAAZAAYAAZAAYA

RF

(16:9)

32 --- 32 32 --- 32 15 --- 15 35 --- 35 15 --- 15

010010010010010
010010010010010

12 --- 12 12 --- 12 13 --- 13 13 --- 13 8 --- 8

14 --- 14 14 --- 14 13 --- 13 13 --- 13 8 --- 8

--- -15 --- --- -15 --- --- -16 --- --- -16 --- --- -14 ---

000000000000000

AV-27F704 AV-32F704 AV-36F704

RF

EXT

(4:3)

RF

(4:3)

RF

(16:9)

EXT

(4:3)

RF

(4:3)

RF

(16:9)

EXT

(4:3)

RF

(4:3)

RF

(16:9)

EXT

(4:3)

RF

(4:3)

RF

(16:9)

EXT

(4:3)

3.SOUND(A)

Setting

No.

A01 IN LEVEL 10
A02 LOW SEP 32
A03 HI SEP 32
A04 SAPC 0

item

Initial setting value

Setting

No.

A05 BBE BASS ±0
A06 BBE TRE ±0
A07 AHS MVE 0
A08 AHS MSC 0

item

Initial setting value

(No.52113)1-25

4.OTHERS(F) [Do not adjust : All fixed]

Setting item

No.

(Not display)

(OSD POSI)

F01

(OSD FREQ)

F02

(CCD POSI)

F03

(CCD FREQ)

F04

(CCD CONT)

F05

(PUR WBCK)

F06

(PUR CONT)

F07
F08 (SN TYPE) 0 ← 0 ← 0

(YCSN TM)

F09
F10 (YCSN E) 5 ← 5 ← 5
F11 (YCSN F) 16 ← 16 ← 16
F12 (YCSN G) 32 ← 32 ← 32

(VNR CHK)

F13

(VCSN TM)

F14
F15 (VCSN 1) 0 ← 0 ← 0
F16 (VCSN 2) 10 ← 10 ← 10
F17 (VCSN 3) 20 ← 20 ← 20

(VCSN STP)

F18

(VN DAT A)

F19

(VM DAT B)

F20

(VM DAT C)

F21

(VM DAT D)

F22

(VM DAT E)

F23

(VMOFF TY)

F24

(YC VMOFF)

F25
F26 (EZSF TM) 40 ← 40 ← 40

(XDSID TM)

F27

(FM TRAP)

F28

ASA AZA AYA AZA AYA

AV-27F704 AV-32F704 AV-36F704

37 ← 37 ← 37
90 ← 90 ← 90
39 ← 45 ← 45
91 ← 93 ← 93

3 ← 4 ← 4
0 ← 0 ← 0
2 ← 2 ← 2

5 ← 5 ← 5

3 ← 3 ← 3
5 ← 5 ← 5

2 ← 2 ← 2

+8 ← +8 ← +8

-8 ← -8 ← -8

-20 ← -20 ← -20

-32 ← -32 ← -32
1 ← 1 ← 1
1 ← 1 ← 1

255 ← 255 ← 255

15 ← 15 ← 15

1 ← 1 ← 1

Initial setting value

6.3L Y/C(LYC) [Do not adjust : All fixed]
Setting item

No.

(Not display)

LYC01

(MODE) 4

LYC02

(VENH) 1

LYC03

(PDSOFF) 0

LYC04

(CB) 0

LYC05

(VNLR) 2

LYC06

(GSEL0) 0

LYC07

(GSEL1) 1

LYC08

(COR) 0

LYC09

(TRAP) 1

LYC10

(CHTRAP) 0

LYC11

(CBPF) 0

LYC12

(ENHOFF) 0

1-26 (No.52113)

Initial setting value

12.SYSTEM(SYS) [Do not adjust : All fixed]

Setting

No.

SYS01
SYS02
SYS03
SYS04
SYS05
SYS06
SYS07
SYS08
SYS09
SYS10
SYS11 THEATER PRO
SYS12
SYS13
SYS14
SYS15
SYS16
SYS17
SYS18
SYS19
SYS20
SYS21
SYS22
SYS23
SYS24
SYS25
SYS26
SYS27

item

VIDEO IN 3 3
PIP 0 0
3D Y/C 0 0
Y CV 1 1
CCD PCHK
PURITY 0 1
VM 1 1
NOISE CR 0 0
CLR TEMP
THEATER 1 1

BBE 0 0
SOUND 1 1
16:9 MD 1 1
HYP SCAN
EZ SURF 0 0
ID DISP 1 1
COMPULINK
CCD 1 1
VCHIP 1 1
VCHIP CA 1 1
JVC LOGO
CMP IN 1 1
CXA1875 0 0
PIM 1 1
GAME MD 0 0
VOL MUTE

Initial setting value

AV-27F704
AV-32F704

11

11

11

11

11

11

00

AV-36F704

(No.52113)1-27

4.7 ADJUSTMENT PROCEDURE

4.7.1 CHECK ITEM

Item

B1 POWER
SUPPLY check

Measuring

instrument

DC voltmeter [S1] or [B1]

Connector
(TP-E &
TP-91(B1))

4.7.2 TUNER / IF CIRCUIT

Item

Measuring

instrument

IF VCO Signal

generator
Remote

control unit

TUNER MAIN
HIGH LEVEL
REFERENCE LEVEL
LOW LEVEL
SYNC : YES

Test point Adjustment part Description

(1) Receive the black-and-white signal. (color off)
(2) Connect the DC voltmeter to the TP-E and TP-

91(B1) of S1 or B1 connector.

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

Model name Connector

AV-27F704

AV-32F704
AV-36F704

B1

S1

Test point Adjustment part Description

[10.VCO]

• It must not adjust without signal
(1) Receive color bar signal.

CW TRANSF.(T111)
[MAIN PWB]

(2) Enter the SERVICE MENU.
(3) Select the 10.VCO.
(4) Push the [VOL/] key, and select the MAIN.
(5) Confirm that the color change from HIGH LEVEL to

LOW LEVEL by CW TRANSF at MAIN PWB, and
check the SYNC : YES.

(6) Adjust until REFERENCE LEVEL mark turns green.

And then confirm that the SYNC : YES again.

(7) Press the [EXIT] key to get out SERVICE MENU.

GREEN

TP-91

(B1)

TP-91

(B1)

TP-E

( )

13

TP-E

( )

153

RF AGC Remote

control unit

Adjustment item

S45: AGC ADJ

1-28 (No.52113)

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

Initial setting value

63

(1) Receive a black and white signal (color off).
(2) Enter the SERVICE MENU.
(3) Select < S45 > (AGC ADJ) of the 1. V/C(S).
(4) Press the [MUTING] key and turn off color.
(5) With the [VOL] key to get the noise in the screen

picture (zero side of setting value).

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

noise disappears from the screen (at that time, not to
increase the value too much).

(7) Change to other channels and make sure that there

is no irregularity.

(8) Press the [EXIT] key and get color out.

4.7.3 FOCUS

Item

FOCUS Signal

Measuring

instrument

generator

Test point Adjustment part Description

FOCUS VR
[In HVT]

(1) Receive the cross-hatch signal.
(2) While watching at the screen, adjust the FOCUS VR

to the vertical and horizontal lines will be thinnest
and sharpest center horizontal line.

(3) Make sure that the picture is in focus even when the

screen gets darkened.

4.7.4 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. SIZE /
V. POSITION
(4:3)

Measuring
instrument

Signal
generator

Remote
control unit

Test point Adjustment part Description

AV-27F704

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

(1) Receive the cross-hatch signal.
(2) Enter the SERVICE MENU.
(3) Select the < D05 > (V PHASE) of the 2.DEF(D).
(4) Check that the value of < D05 > is 0.

(5) Adjust the vertical screen size of the visible screen
V. CENTER SW
(S1421)
[MAIN PWB]

top to 92% with the < D07 > (V SIZE) and V
CENTER SW.

NOTE :

• Bottom is to be located with 85%~95% range.

• When vertical linearity is not even, adjust vertical
linearity by < D13 > (V LIN) and < D11 > (VS CORR).

AV-32F704
AV-36F704

[2.DEF (D)]
D05: V PHASE
D07: V SIZE
D09: V CENTER

(1) Receive the cross-hatch signal.
(2) Enter the SERVICE MENU.
(3) Select the < D05 > (V PHASE) of the 2.DEF(D).
(4) Check that the value of < D05 > is 0.
(5) Adjust the vertical screen size of the visible screen

top to 92% with the < D07 > (V SIZE) and < D09 > (V
CENTER).

NOTE :

• Bottom is to be located with 85%~95% range.

• When vertical linearity is not even, adjust vertical
linearity by < D13 > (V LIN) and < D11 > (VS CORR).

Screen
size
(92%)

Picture
size
(100%)

Adjustment item

D05: V PHASE

D07: V SIZE

D09: V CENTER

AV-27F704

ASA AZA

0

90 80

32

Initial setting value

AV-32F704

AYA AZA

0

80 65

3515

(No.52113)1-29

AV-36F704

0

80

15

Item

V. SIZE /
V. POSITION
(16:9)

[B=B]

B

B

Measuring

instrument

Signal
generator

Remote
control unit

Test point Adjustment part Description

[2.DEF (D)]
D08: V. SIZE+­D14: V. LIN+-

• V. SIZE / V. POSITION (4:3) adjustment should be
finished.

(1) Receive a black and white signal (color off).
(2) Select 16:9 mode with the [ASPECT] key.
(3) Confirm that the width of V. BLANKING is equal to

adjustment value (B).

(4) If the adjustment is not correct, en ter the SERVICE

MENU.

(5) Then adjust the < D08 > (V. SIZE+-) and < D14 > (V.

LIN+-) to be same to adjustment value (B).

NOTE :

• When you change the VERTICAL adjustment value of
the regular mode (4:3), review the adjustment of 16:9
mode again.

Adjust

point

B

H. SIZE /
H. POSITION /
SIDE PIN
(4:3)

Setting item Setting value

D08: V. SIZE+­D14: V. LIN+-

Signal
generator

50mm

60mm

67mm

[2.DEF (D)]
D03: H POSI

D15: H SIZE
Remote
control unit

D23: EW PARA

D19: EWCR TOP

D21: EWCR BTM

Screen size (90%)

[AV-27F704]

[AV-32F704]

[AV-36F704]

• V. SIZE / V. POSITION adjustment should be finished.
(1) Receive a cross-hatch signal.
(2) Enter the SERVICE MENU.
(3) Select the < D03 > (H POSI) of the 2.DEF (D).
(4) Adjust by H. POSITION to be same size at both side.
(5) Then adjust the horizontal size of the visi ble screen

at both size to 90% with the < D15 > (H. SIZE).

(6) And adjust the vertical line at both side to become

linear line by < D23 > (EW PARA).

(7) Confirm the linearity of vertical li ne and horizontal

size.

(8) If it is necessary, readjust 1.~7.

NOTE :

• If it is not straight the vertical upper and bottom

corner line adjustment the upper and bottom corner
pin by < D19 > (EWCR TOP) and < D21 > (EWCR
BTM).

Setting item

D03: H POSI

D15: H SIZE

D19: EWCR TOP

D21: EWCR BTM

D23: EW PARA

1-30 (No.52113)

Picture size (100%)

Initial setting value

AV-27F704

20

33

12

14

36

AV-32F704

25

31

13

13

35

AV-36F704

22

30

8

8

37

Item

H. POSITION /
H. SIZE /
SIDE PIN
(16:9)

Measuring
instrument

Signal
generator

Remote
control unit

Test point Adjustment part Description

Screen size (90%)

Picture size (100%)

[2.DEF (D)]
D16: H SIZE+­D04: H POSI+­D24: EW PARA+­D20: EWCR T+­D22: EWCR B+-

• V. SIZE / V. POSITION adjustment should be finished.

• H. SIZE / H. POSITION / SIDE PIN adjustment should
be finished. (Regular size(4:3)).
(1) Receive the cross-hatch signal.
(2) Select 16:9 mode with the [ASPECT] key.
(3) Enter the SERVICE MENU.
(4) Confirm both sides of cross-hatch to be the

adjustment value 90%.

(5) If it not correct, adjust to be value 90% at the < D16 >

(H SIZE+-) and < D04 > (H POSI+-).

(6) Confirm the vertical SECOND line from lift and right

to be straight.

(7) If it is not straight, adjust to be stra ight at < D24 >

(EW PARA+-), < D20 > (EWCR T+-) and < D22 >
(EWCR B+-).

NOTE :

• Review the adjustment of 16:9 mode again when you

change the SIDE PIN adjustment value of regular
(4:3) mode.

Setting item

D04: H POSI+-

D16: H SIZE+-

D20: EWCR T+-

D22: EWCR B+-

D24: EW PARA+-

Initial setting value

AV-27F704

-15

AV-32F704

-16

AV-36F704

0

0

0

0

-14

(No.52113)1-31

4.7.5 VIDEO CIRCUIT

Item

WHITE
BALANCE

Measuring

instrument

Signal
generator

(Low Light)

Remote
control unit

Test point Adjustment part Description

LOW LIGHT adjustment mode

SETTING VALUESETTING ITEM

BRIGHT

R CUTOFF

SINGLE HORIZONTAL LINE

G CUTOFF B CUTOFF

SETTING VALUE

[1.V/C (S)]
S01: BRIGHT
S11: R CUTOFF
S12: G CUTOFF
S13: B CUTOFF

[7.LOW LIGHT]
SCREEN VR

[in HVT]

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

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

(5) Return the SERVICE MENU and select the 7.LOW

LIGHT.

(6) Display a single hori zontal line by pressing the [1]

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

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

appears faintly.
(9) Adjust the two colors which did not appear until the

single horizontal line that is displayed becomes

white using the [4] ~ [9] keys.

(10) Turn the SCREEN VR until the single horizontal line

is displayed faintly.

(11) Press the [2] key to cancel the single ho rizontal line

mode.

(12) Adjust the BRIGHT level to become the black

component shines white slightly.

(13) Confirm that whether the color ing r e di e nt of R, G, or

B is visible to the black component, which shines

white slightly.

(14) When the color ingredient can be seen, two col ors

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

to look white.

(15) Return the value of < S01 > to initial setting value.

Adjustment item

S11: R CUT OFF

S12: G CUT OFF 30

S13: B CUT OFF 30

S01: BRIGHT 64

Initial setting value

30

• The [3] (EXIT) key is the cancel key for the WHITE
BALANCE.

REMOTE CONTROL UNIT

H.LINE ON

R CUTOFF G CUTOFF B CUTOFF

R CUTOFF G CUTOFF B CUTOFF

H.LINE OFF EXIT

1-32 (No.52113)

Item

WHITE
BALANCE
(High Light)

Measuring
instrument

Test point Adjustment part Description

Signal
generator

Remote
control unit

HIGH LIGHT adjustment mode

[1.V/C (S)]
S14: R DRIVE
S15: B DRIVE

[8.HIGH LIHGT]

(1) Receive the black-and-white signal (color off).
(2) Enter the SERVICE MENU.
(3) Select the 1.V/C (S).
(4) Set the initial setting value of < S14 > (R DRIVE) and

< S15 > (B DRIVE).

(5) Return the SERVICE MENU and select the 8.HIGH

LIGHT.

(6) Adjust the screen until it becomes white using the

[4], [6], [7] and [9] keys.

• The [3] (EXIT) key is the cancel key for the WHITE
BALANCE.

R DRIVE B DRIVE

REMOTE CONTROL UNIT

D DRIVE

D DRIVE

SUB BRIGHT Remote

control unit

Adjustment item Initial setting value

S01:

BRIGHT

EXIT

B DRIVE

B DRIVE

64

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

Adjustment item

S14: R DRIVE

S15: G DRIVE 64

Initial setting value

64

(1) Receive the broadcast and set the STANDARD

mode.
(2) Enter the SERVICE MENU.
(3) Select < S01 > (BRIGHT) of the 1.V/C(S).
(4) Set 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.

SUB
CONTRAST

Remote
control unit

Adjustment item Initial setting value

S02:

PICTURE

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

60

(1) Receive the broadcast and set the STANDARD

mode.
(2) Enter the SERVICE MENU.
(3) Select < S02 > (PICTURE) of the 1.V/C(S).
(4) Set the initial setting value of the < S02 >.
(5) If the contrast is not the best wi th the initial setting

value, make fine adjustment of the < S02 > until you

get the optimum contrast.

(No.52113)1-33

Item

Measuring

instrument

SUB COLOR Remote

control unit

Test point Adjustment part Description

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

Adjustment item Initial setting value

S03: COLOR

50

[ Method of adjustment without measuring instrument ]

(1) Receive the broadcast.
(2) Enter the SERVICE MENU.
(3) Select < S03 > (COLOR) of the 1.V/C(S).
(4) Set the initial setting value of the < S03 >.
(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.

Signal
generator

Oscilloscope
Remote

control unit

Y

C

W

TP-B
TP-E
[CRT SOCKET
PWB]

G

R

B

M

[9.RF AFC]
[1.V/C (S)]

S03: COLOR

(

)

0V

(A)

)

(

[ Method of adjustment using measuring instrument ]

(1) Input the full field color bar signal (75% white).
(2) Enter the SERVICE MENU.
(3) Select 9.RF AFC, and set the AFC to OFF.
(4) Select < S03 > (COLOR) of the 1.V/C(S).
(5) Set the initial setting value of the < S03 >.
(6) Connect the oscilloscope between TP-B and TP-E.
(7) Adjust COLOR and bring the value of (A) in the

figure to the voltage shown in the table bellow.

(8) Reset the AFC setting position from OFF to ON.

Model name

AV-27F704

AV-32F704

AV-36F704

Setting value

+17V

+27V

+30V

1-34 (No.52113)

Item

Measuring
instrument

SUB TINT Remote

control unit

Test point Adjustment part Description

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

[ Method of adjustment without measuring instrument ]

(1) Receive the broadcast.
(2) Enter the SERVICE MENU.
(3) Select < S04 > (TINT) of the 1.V/C(S).
(4) Set the initial setting value of the < S04 >.
(5) If the tint is not the best with th e initi al setting value ,

make fine adjustment of the < S04 > until you get the

optimum tint.

Adjustment item Initial setting value

Signal
generator

Oscilloscope
Remote

control unit

Y

C

W

TP-B
TP-E
[CRT SOCKET
PWB]

G

R

B

M

[9.RF AFC]
[1.V/C (S)]

S04: TINT

(

)

0V

(B)

(

)

S04: TINT

68

[ Method of adjustment using measuring instrument ]

(1) Input the full field color bar signal (75% white).
(2) Enter the SERVICE MENU.
(3) Select 9.RF AFC, and set the AFC to OFF.
(4) Select < S04 > (TINT) of the 1.V/C(S).
(5) Set the initial setting value of the < S04 >.
(6) Connect the oscilloscope between TP-B and TP-E.
(7) Adjust TINT and bring the value of (B) in the figure to

the voltage shown in the table bellow.
(8) Reset the AFC setting position from OFF to ON.

Model name

AV-27F704

AV-32F704

AV-36F704

ASA
AZA

AYA

AZA

AYA

Setting value

+9V

+9V

+20V

+28V

(No.52113)1-35

4.7.6 MTS CIRCUIT

Item

MTS INPUT
LEVEL

Signal
generator

Remote
control unit

Measuring

instrument

Test point Adjustment part Description

R OUT
[AUDIO OUT]

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

(1) Receive the cross-hatch signal (cross-hatch /

400Hz)
(2) Enter the SERVICE MENU.
(3) Select the < A01 > (IN LEVEL) of the 3.SOUND (A).
(4) Verify that the < A01 > is set at its initial setting value.

(5) Connect the signal generator to R OUT pin of the

AUDIO OUT.
(6) Adjust the MTS input level to 500mV(rms) by < A01 >.

MTS
SEPARATION

1 cycle

TV audio
multiplex
signal
generator

Oscilloscope

L-Channel
signal waveform

R OUT
L OUT
[AUDIO OUT]

R-Channel
crosstalk portion

Minimum

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

Adjustment item

A01: IN LEVEL

Initial setting value

10

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

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.
(3) Enter the SERVICE MENU.
(4) Select the < A02 > (LOW SEP.) of the 3.SOUND (A).
(5) Set the initial setting value of the < A02 >.
(6) Adjust the < A02 > so that the stroke ele ment of the

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

pin of the AUDIO OUT, and enlarge the voltage axis.

(8) Change the signal to 3kHz, and similarly adjust

the < A03 > (HI SEP.).

Adjustment item Initial setting value

A02: LOW SEP

A03: HI SEP

32

32

1-36 (No.52113)

4.8 HOW TO CHECK THE HIGH VOLTAGE HOLD DOWN CIRCUIT

4.8.1 HIGH VOLTAGE HOLD DOWN CIRCUIT

After repairing the high voltage hold down circuit shown in Fig. 1.
This circuit shall be checked to operate correctly.

4.8.2 CHECKING OF THE HIGH VOLTAGE HOLD DOWN CIRCUIT

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

RESISTOR

Q951

R952

B1

(134.5V)

Model Resistor

AV-27F704ASA
AV-27F704AZA
AV-32F704AYA
AV-32F704AZA
AV-36F704AYA

20.0k 110

16.9k 85

19.3k 96.5

23.3k 116

19.3k 96.5

POWER
ON OFF

R532

D535

R533

Q531

R538

Q532

R534

D534

C533

D531

45

R535

3 2 1

R537

C525

CONNECTOR

S1

FR525

HEATER

T502

HVT

4

D525

(No.52113)1-37

SECTION 5

TROUBLE SHOOTING

5.1 SELF CHECK INDICATING FUNCTION

The self check function begins detection about 5 seconds after
power is supplied.
In the event a malfunction is detected, the sub-power is cut off
immediately.
At this time, the ON TIMER LED flashes to inform of the
malfunction.

[ON-TIMER LED indication]

Item LED ON / OFF intervals

B1 over current / NECK 0.5-second (ON / OFF)

POWER
Supplied

After about

5 seconds

Detection

start

Malfunction
is detected

SUB-POWER OFF

Flashing
ON-TIMER LED

1-38 (No.52113)

(No.52113)1-39

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.52113)

Printed in Japan

WPC