JVC AV24WT5EIS, AV24WT5EKS, AV24WT5EPS, AV28WT5EIS, AV28WT5EKS Service Manual

AV28WT5EPS AV24WT5EPS

AV28WT5EIS AV24WT5EIS

AV28WT5EKS AV24WT5EKS

SERVICE MANUAL

COLOUR TELEVISION

AV28WT5EPS AV24WT5EPS
AV28WT5EIS AV24WT5EIS

BASIC CHASSIS

ⅡⅡⅡⅡ

JK

AV28WT5EKS AV24WT5EKS

CONTENTS

!

SPECIFICATIONS

!

SAFETY PRECAUTIONS

!

WARNING

!

FEATURES

!

MAIN DIFFERENCE PARTS LIST

!

SPECIFIC SERVICE INSTRUCTIONS

!

SERVICE ADJUSTM ENTS

!

PARTS LIST

★

OPERATING INSTRUCTIONS

★

STANDARD CIRCUIT DIAGRAM

････････････････････････････････

････････････････････････････････ ････････････････････････････････

････････････････････････････････････････････････････････････････

････････････････････････････････

････････････････････････････････ ････････････････････････････････

････････････････････････････････････････････････････････････････

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････････････････････････････････ ････････････････････････････････

････････････････････････････････････････････････････････････････

････････････････････････････････

････････････････････････････････ ･･･････････････････････････

････････････････････････････････････････････････････････････････

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････････････････････････････････ ････････････････････････

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････････････････････････････････

････････････････････････････････ ････････････････････････････････

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････････････････････････････････ ････

････････････････････････････････････････････････････････････････

･･･････････････････････････

･･････････････････････････････････････････････････････

････････････････････････････････ ････････

････････････････････････････････････････････････････････････････

････････････････････････････････ ･･･････

････････････････････････････････････････････････････････････････

････････････････････････････････

････････････････････････････････ ････････････････････

････････････････････････････････････････････････････････････････

････････････････････････････････

････････････････････････････････ ･･･････････････

････････････････････････････････････････････････････････････････

････････････････････････

････････････････････････････････････････････････

････････････････････････････････ ････

････････････････････････････････････････････････････････････････

････････････････････････････････

････････････････････････････････ ･････････････････････

････････････････････････････････････････････････････････････････

････････････････････････････････

････････････････････････････････ ･･････････････････

････････････････････････････････････････････････････････････････

････････････････････

････････････････････････････････････････

･･･････････････

･･････････････････････････････

･････････････････････

･･････････････････････････････････････････

･･････････････････

････････････････････････････････････

････････

････････････････

･･･････

･･････････････

････

････････

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4
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9
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39

1-1
2-1

1

COPYRIGHT © 2001 VICTOR COMPANY OF JAPAN, LTD.

No.51776
Jan. 2001

A

V28WT5EPS

A

A

V28WT5EIS
V28WT5EKS

SPECIFICATIONS

Item

Dimensions ( W
Mass

TV RF System
Colour System

Stereo System
Teletext System

Receiving Frequency

Intermediate Frequency

××××H××××

D )

VHF
UHF

French CATV

VIF Carrier
SIF Carrier

716mm×489mm×496mm

34.2kg
CCIR (B/G, I ,L) CCIR (I ) CCIR ( I )
PAL / SECAM /

NTSC (Only in EXT mode)
A2 / NICAM NICAM NICAM
FLOF (Fastext)

TOP (German system)
WST(Standard system)

47MHz ～ 470MHz 47MHz ～ 470MHz
470MHz ～ 862MHz 470MHz ～ 862MHz 470MHz ～ 862MHz
116MHz ～ 172MHz /

220MHz ～ 469MHz

38.9MHz (B/G, I ,L)/ 33.95MHz (L’) 38.9MHz ( I ) 38.9MHz ( I )

33.4MHz (5.5MHz:B/G) / 32.9MHz
(6.0MHz:I) / 32.4MHz (6.5MHz:L) /

27.45MHz (6.5MHz:L’)

AV28WT5EPS AV28WT5EIS AV28WT5EKS

(28” Model)

Content

PAL / NTSC (Only in EXT mode) PAL / NTSC (Only in EXT mode)

FLOF (Fastext)
WST(Standard system)

32.9MHz (6.0MHz:I) 32.9MHz (6.0MHz:I)

Colour Sub Carrier Freq.

PAL

SECAM

NTSC

Power Input
Power Consumption

Aerial Input Term
Picture Tube

High Voltage

Speaker
Audio Output

EXT-1/EXT-2/EXT-3
(Input / Output)

EXT-4 (Input) Video

Audio(L/R)

S / Video

AUDIO OUT (Variable)

Headphone jack

4.43MHz 4.43MHz 4.43MHz

4.40625MHz / 4.25MHz

3.58MHz / 4.43MHz 3.58MHz / 4.43MHz 3.58MHz / 4.43MHz
AC 220V～240V , 50Hz

156W(Max) / 122W(Avg),
122W/h(ITALY)
75Ωunbalanced, Coaxial
Visible size : 66cm, Measured

diagonally

1kV

30.0kV (at zero beam
current)

10cm×3cm Oval type×2
5W + 5W

21-pin Euro connector
(SCART socket)

1Vp-p 75Ω(RCA pin jack)
500mVrms(!-4dBs!), High
Impedance (!RCA pin jack!)

Y : 1V
sync Provided, when terminated
with 75Ω)
C : 0.286V
terminated with 75Ω)

0～1Vrms, Low Impedance
(RCA pin jack×2)

Stereo mini jack (φ3.5mm )

+

-1.5kV

p-p

POSITIVE (Negative

p-p

(Burst signal, when

Remote Control Unit

RM-C54 (AAA/R03 dry battery×2) RM-C55 (AA A /R03 dry battery×2)

Design & specifications are subject to change without notice

2

.

No.51776

A

V24WT5EPS

A

A

V24WT5EIS

V24WT5EKS

SPECIFICATIONS

Item

Dimensions ( W
Mass

TV RF System
Colour System

Stereo System
Teletext System

Receiving Frequency

Intermediate Frequency

Colour Sub Carrier Freq.

Power Input
Power Consumption

Aerial Input Term
Picture Tube

High Voltage

Speaker
Audio Output

EXT-1/EXT-2/EXT-3
(Input / Output)

EXT-4 (Input) Video

AUDIO OUT

Headphone jack

××××H××××

D )

VHF
UHF

French CATV

VIF Carrier
SIF Carrier

PAL

SECAM

NTSC

Audio(L/R)

S / Video

645mm×427mm×443mm

23.1kg
CCIR (B/G, I ,L) CCIR ( I )

PAL / SECAM /
NTSC (Only in EXT mode)

A2 / NICAM NICAM
FLOF (Fastext)

TOP (German system)
WST(Standard system)

47MHz ～ 470MHz 47MHz ～ 470MHz
470MHz ～ 862MHz 470MHz ～ 862MHz 470MHz ～ 862MHz
116MHz ～ 172MHz /

220MHz ～ 469MHz

38.9MHz (B/G, I ,L) /

33.95MHz (L’)

33.4MHz (5.5MHz:B/G) / 32.9MHz
(6.0MHz:I) /32.4MHz (6.5MHz:L) /

27.45MHz (6.5MHz:L’)

4.43MHz 4.43MHz

4.40625MHz / 4.25MHz

3.58MHz / 4.43MHz 3. 58MHz / 4.43MHz
AC 220V～240V , 50Hz

127W(Max) / 92W(Avg)
92W/h(ITALY)
75Ωunbalanced, Coaxial
Visible size : 56cm, Measured

diagonally

30.0kV (at zero beam
current)

10cm×3cm Oval type×2
5W + 5W

21-pin Euro connector
(SCART socket)

1Vp-p 75Ω(RCA pin jack)
500mVrms(!-4dBs!), High
Impedance (!RCA pin jack!)

Y : 1V
sync Provided, when terminated
with 75Ω)
C : 0.286V
terminated with 75Ω)

0～1Vrms, Low Impedance
(RCA pin jack)

Stereo mini jack (φ3.5mm )

AV24WT5EPS AV24WT5EIS AV24WT5EKS

1kV

+

-1.5kV

p-p

POSITIVE (Negative

p-p

(Burst signal, when

(24” Model)

Content

PAL /
NTSC (Only in EXT mode)

FLOF (Fastext)
WST(Standard system)

38.9MHz ( I )

32.9MHz (6.0MHz:I)

Remote Control Unit

RM-C54 (AAA/R03 dry battery×2) RM-C55 (AAA/R03 dry battery×2)

Design & specifications are subject to change without notice

No.51776

3

A

V28WT5EPS AV24WT5EPS

SAFETY PRECAUTIONS

1. The design of this product contains special hardware, many
circuits and components specially for safety purposes. For
continued protection, no changes should be made to the original
design unless authorized in writing by the manufacturer.
Replacement parts must be identical to those used in the original
circuits. Service should be performed by qualified personnel
only.

2. Alterations of the design or circuitry of the products should not be
made. Any design alterations or additions will void the
manufacturer's warranty and will further relieve the manufacturer
of responsibility for personal injury or property damage resulting
therefrom.

3. Many electrical and mechanical parts in the products have
special safety-related characteristics. These characteristics are
often not evident from visual inspection nor can the protection
afforded by them necessarily be obtained by using replacement
components rated for higher voltage, wattage, etc. Replacement
parts which have these special safety characteristics are
identified in the parts list of Service manual.

components having such features are identified by shading
on the schematics and by (
manual.

have the same safety characteristics as the recommended
replacement part shown in the parts list of Service manual may
cause shock, fire, or other hazards.

The use of a substitute replacement which does not

!!!!

) on the parts list in Service

Electrical

4.

Don't short between the LIVE side ground and ISOLATED
(NEUTRAL) side ground or EARTH side ground when
repairing.

Some model's power circuit is partly different in the GND. The
difference of the GND is shown by the LIVE : (") side GND, the
ISOLATED(NEUTRAL) : (#) side GND and EARTH : ($) side
GND. Don't short between the LIVE side GND and
ISOLATED(NEUTRAL) side GND or EARTH side GND and
never measure with a measuring apparatus (oscilloscope etc.)
the LIVE side GND and ISOLATED(NEUTRAL) side GND or
EARTH side GND at the same time.
If above note will not be kept, a fuse or any parts will be broken.

5. If any repair has been made to the chassis, it is recommended
that the B1 setting should be checked or adjusted (See
ADJUSTMENT OF B1 POWER SUPPLY).

6. The high voltage applied to the picture tube must conform with
that specified in Service manual. Excessive high voltage can
cause an increase in X-Ray emission, arcing and possible
component damage, therefore operation under excessive high
voltage conditions should be kept to a minimum, or should be
prevented. If severe arcing occurs, remove the AC power
immediately and determine the cause by visual inspection
(incorrect installation, cracked or melted high voltage harness,
poor soldering, etc.). To maintain the proper minimum level of
soft X-Ray emission, components in the high voltage circuitry
including the picture tube must be the exact replacements or
alternatives approved by the manufacturer of the complete
product.

7. Do not check high voltage by drawing an arc. Use a high voltage
meter or a high voltage probe with a VTVM. Discharge the
picture tube before attempting meter connection, by connecting
a clip lead to the ground frame and connecting t he other end of
the lead through a 10k" 2W resistor to the anode button.

8. When service is required, observe t he original lead dress. Extra
precaution should be given to assure correct lead dress in the
high voltage circuit area. Where a short circuit has occurred,
those components that indicate evidence of overheating should
be replaced. Always use the manufacturer's replacement
components.

9.

(1)

(2)

AV28WT5EPS / AV24WT5EPS

Isolation Check
(Safety for Electrical Shock Hazard)

After re-assembling the product, always perform an isolation
check on the exposed metal parts of the cabinet (antenna
terminals, video/audio input and output terminals, Control knobs,
metal cabinet, screwheads, earphone jack , control shafts, etc.)
to be sure the product is safe to operate without danger of
electrical shock.

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 applianc e 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.

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 m ust not exceed

0.5mA AC (r.m.s.).
However, in tropical area, this must not exceed 0.2mA AC
(r.m.s.).

""""

Alternate Check Method

Plug the AC line cord directly into the AC outlet (do not use a line
isolation transformer during this check.). Use an AC voltmeter
having 1000 ohms per volt or more sensitivity in the following
manner. Connect a 1500" 10W resistor paralleled by a 0.15#F
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 mus t not exceed 0.3V A C (r.m. s.).
This corresponds to 0.2mA AC (r.m.s.).

AC VOLTMETER

0.15μF AC-TYPE

1500

GOOD EARTH GROUND

"

(HAVING 1000
OR MORE SENSITIVITY)

10W

/V,

"

PLACE THIS PROBE
ON EACH EXPOSED
METAL PART

4

No.51776

A

V28WT5EIS AV24WT5EIS

A

V28WT5EKS AV24WT5EKS

SAFETY PRECAUTIONS

1. The design of this product cont ains special hardware and 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. Alt erations of the design or circuit ry of the product should not be
made. Any design alterations or additions will void the
manufacturer's warranty and will further relieve the manufacturer
of responsibility for personal injury or property damage resulting
therefrom.

3. Many electrical and mechanical parts in the product have special
safety-related characteristics. These characteristics are often not
evident from visual inspection nor can the protection afforded by
them necessary be obtained by using replacement components
rated for higher voltage, wattage, etc. Replacement parts which

4. The leads in the products are routed and dressed with ties,

AV28WT5EIS / AV24WT5EIS
AV28WT5EKS / AV24WT5EKS

have these special safety characteristics are identified in the
Parts List of Service Manual. Elect rical components having such
features are identified by shading on the schemati cs and by (!)
on the Parts List in the Service Manual. The use of a substitute
replacement which does not have the same safety
characteristics as the recommended replacement part shown in
the Parts List of Service Manual m ay cause shock, fire, or ot her
hazards.

clamps, tubing’s, barriers and the like to be separated from live
parts, high temperature parts, moving parts and / or sharp edges
for the prevention of electric shock and fire hazard. When
service is required, the original lead routing and dress should be
observed, and it should be confirmed that they have been
returned to normal, after re-assembling.

WARNING

1. The equipm ent has been designed and manuf act u red t o meet internati onal saf ety standards.

2. I t is the legal responsibility of the repairer to ensure that these safety standards are maintained.

3. Repairs must be made in accordance with the relevant safety standards.

4. I t is essential that safety critical components are replaced by approved parts.

5. I f mains voltage selector is provided, check setting for local voltage.

No.51776

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A

V28WT5EPS AV24WT5EPS

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V28WT5EIS AV24WT5EIS
V28WT5EKS AV24WT5EKS

■■■■

21-pin Euro connector (SCART socket) : EXT-1 / EXT-2 / EXT-3

(P-P= Peak to Peak, S-W= Sync tip to white peak, B-W= Blanking to white peak)

Pin

No.

Signal Designation Matching Value EXT-1 EXT-2 EXT-3

1 AUDIO R output 500mVrms(Nominal),

Low impedance

2 AUDIO R input 500mVrms(Nominal),

High impedance

3 AUDIO L output 500mVrms(Nominal),

Low impedance

4 AUDI O GND
5 GND (B )
6 AUDIO L input 500mVrms(Nominal),

High impedance

7 B i nput
8 FUNCT O N SW

(SLOW SW)

9 GND (G)
10 SCL3 NC
11 G input
12 SDA3 NC
13 GND (R)
14 GND (YS)
15 R / C input

16 Ys input
17 GND(VIDEO output)
18 GND(VIDEO input)
19 VIDEO output

20 VIDEO / Y input
21 COMMON GND

700mV
Low : 0-3V, High : 8-12V, High

impedance

700mV

R : 700mV
C : 300mV
Low : 0 - 0.4, High : 1 - 3V, 75

1V

P-P

1V

P-P

Ω○

, 75

B-W

Ω○

, 75

B-W

Ω

, 75

B-W

Ω

, 75

P-P

Ω○

(Negative going sync), 75

(Negative going sync), 75

Ω○

Ω○ ○ ○

○

(TV OUT)

○○○

○

(TV OUT)

○○○

○○○

○○○

○○○

○○○

○○○

○

○

(only R)

○○○

○○○

(TV)

○○○

○

(LINE OUT)

○

(LINE OUT)

NC NC

○

NC NC

○

NC NC

○

(only C)

NC NC

○

(LINE OUT)

NC

NC

NC

NC

○

(only C)

NC

[

Pin assignment

6

]

No.51776

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A

A

FEATURES

V28WT5EPS AV24WT5EPS

V28WT5EIS AV24WT5EIS

V28WT5EKS AV24WT5EKS

"

By preference, users can select the picture size from REGULAR,

PANORAMIC, FULL, 14:9 ZOOM, 16:9 ZOOM, 16:9 ZOOM SUB
TITLE modes. When the TV unit received WSS picture signal, the
picture can be changed to 16:9 ZOOM mode automatically.

"

The TELETEXT SYSTEM has a built-in FASTEXT, TOP(Only

AV28WT5EPS / AV24WT5EPS) and WST system.

"

Because this TV unit corresponds to multiplex broadcast, users

can enjoy music programs and sporting events with live realism.
In addition, BILINGUAL programs can be heard in their original
language.

TV EXT-1 EXT-3

EXT-2

"

Built-in ECO (ECONOMY, ECOLOGY) MODE.

In accordance with the brightness in a room, the brightness
and/or contrast of the picture can be adjusted automatically to
make the optimum picture which is easy on the eye.

"

Users can make VCR dubbing of picture and sound by controlling

the AV selector to select an opt ional source at the EXT-2 output
shown in figure.

EXT-4

No.51776

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V28WT5EPS AV24WT5EPS

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V28WT5EIS AV24WT5EIS
V28WT5EKS AV24WT5EKS

MAIN DIFFERENCE PARTS LIST

(28” Model)

Model Name

!!!!

Part Name

MAIN PWB SJK-1712A-U2

AV SEL. PWB SJK0S712A-U2

!

POWER CORD QMPK160-185-JC QMPN130-185-JC

!

RATING LABEL

EURO LABEL AEM1052-031-E AEM1052-030-E AEM1052-029-E

!

INST BOOK
REMOTE CONTROL

UNIT
X-RAY CARD AEM1061-001-E
S. DIAGRAM

ONLY ITALY(SERVICE)
REG. SHEET

AV28WT5EPS AV28WT5EIS AV28WT5EKS

SJK-1912A-U2

SJK0S912A-U2

AEM3148-001-E

LC20433-008A-U
LC20434-008A-U

LCT0897-001A-U
LCT0898-001A-U

RM-C54-1C RM-C55-1C

2824WT5-HSAEI

××

LC20080-015A-U LC20091-023A-U

LCT0900-001A-U LCT0899-001A-U

←

←

××

××

←

←

(24” Model)

Model Name

!!!!

Part Name

MAIN PWB SJK-1713A-U2

AV SEL. PWB SJK0S713A-U2

!

POWER CORD QMPK160-185-JC QMPN130-185-JC

!

RATING LABEL

EURO LABEL AEM1052-027-E AEM1052-025-E AEM1052-026-E

!

INST BOOK
REMOTE CONTROL

UNIT
X-RAY CARD AEM1060-001-E
S. DIAGRAM

ONLY ITALY(SERVICE)
REG. SHEET

AV24WT5EPS AV24WT5EIS AV24WT5EKS

SJK-1913A-U2

SJK0S913A-U2

AEM3148-001-E

LC20433-007A-U
LC20434-007A-U

LCT0897-001A-U
LCT0898-001A-U

RM-C54-1C RM-C55-1C

2824WT5-HSAEI

××

LC20080-014A-U LC20091-022A-U

LCT0900-001A-U LCT0899-001A-U

←

←

××

××

←

←

8

No.51776

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V28WT5EPS AV24WT5EPS

A

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V28WT5EIS AV24WT5EIS

V28WT5EKS AV24WT5EKS

SPECIFIC SERVICE INSTRUCTIONS

REPLACEMENT OF CHIP COMPONENT

!

CAUTIONS

1. A void heating for more than 3 seconds.

2. Do not rub the elect rodes 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.

!

SOLDERING IRON

1. Us e a hi gh insulat i on solderi ng iron with a thin pointed end of it.

2. A 30w solderi ng i ron is recommended for easily removi ng parts .

!

REPLACEMENT STEPS

How to remove Chip parts

1.

####

Resistors, capacitors, etc

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

alternately melt the solder at each end.

(2) Shi ft with tweezers and remove the chip part.

####

Transistors, diodes, variable resistors, etc

(1) Appl y extra sol der to each lead.

SOLDER

SOLDER

2. How to install Chip parts

####

Resistors, capacitors, etc

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

(2) Gras p 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) Appl y 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

as indicated in the figure.

A

A

and C.

B

B

B

9

(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.

(4) Then solder leads

Note : After removing the part, remove remaining solder from the

pattern.

No.51776

C

A

C

A

V28WT5EPS

A

A

A

A

V28WT5EIS
V28WT5EKS

DISASSEMBLY PROCEDURE

(28” Model)

REMOVING THE REAR COVER

1. Unplug the power cord.

”

2. Remove the 13 screws marked

3. Withdraw the rear cover toward you.

“

as shown in the Fig. 1.

AAAA

REMOVING THE CHASSIS

"

After removing the rear cover.

”

1. Remove t he s crew mark ed
FRONT CABINET as shown in the Fig. 1.

2. Slightly raise the both sides of t he chassis by hand and remove
the two claws under the both sides of the chassis from the front
cabinet.

3. Withdraw the chassis backward.
(If necessary, take off the wire clamp, connectors etc.)

“

on the S/VIDEO terminal of

BBBB

REMOVING THE AV TERMINAL BOARD

"

After removing the rear cover.

”

1. Remove the 2 screws marked

2. Remove the claws marked
shown in Fig. 2.

3. While raising the claw marked
TERMINAL BOARD slightly in the directi on of arrow

shown in Fig. 2.

“

“

as shown in the Fig. 1.

CCCC

”

under the CHASSIS as

DDDD

”

“

, remove the top of the AV

EEEE

“

FFFF

”

as

V TERMINAL

BOARD

E

F

D

REMOVING THE SPEAKER

"

After removing the rear cover.

”

1. Remove the 2 screws marked

2. Follow the same steps when removing the other hand speaker.

“

as shown in Fig. 1.

GGGG

CHECKING THE PW BOARD

To check the back side of the PW Board.

1) Pull out the chassis. (Refer to REMOVING THE CHASSIS).

2) Erect the chassis vertically so that you can easily check t he
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, mak e sure that the wire connector is

properly connected.

"

When conducting a check with power supplied, be sure to confirm

that the CRT EARTH WIRE (BRAIDED ASS’Y) is connected to
the CRT SOCKET PW board.

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 s ure to tie the wires with
a new cable tie.

V SEL PWB

D

Fig. 2

10

No.51776

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V28WT5EPS

A

A

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A

V28WT5EIS

V28WT5EKS

(28” Model)

FRONT CABINET

B

SPEAKER

CRT
SOCKET
PWB

FRONT CONTROL
PWB

V SEL. PWB

POWER & DEF. PWB

CLAW

CHASSIS

CONTROL BASE

REAR COVER

V TERMINAL

BOARD

MAIN PWB

CLAW

C

B

Fig. 1

No.51776

11

A

V24WT5EPS

A

A

A

A

V24WT5EIS
V24WT5EKS

DISASSEMBLY PROCEDURE

(24” Model)

REMOVING THE REAR COVER

1. Unplug the power cord.

”

2. Remove the 9 screws marked

3. Withdraw the rear cover toward you.

“

as shown in the Fig. 3.

AAAA

REMOVING THE CHASSIS

"

After removing the rear cover.

1. Slightly raise the both sides of t he chassis by hand and remove
the two claws under the both sides of the chassis from the front
cabinet.

2. Withdraw the chassis backward.
(If necessary, take off the wire clamp, connectors etc.)

REMOVING THE AV TERMINAL BOARD

"

After removing the rear cover.

”

1. Remove the 2 screws marked

2. Remove the claws marked
shown in Fig. 4.

3. While raising the claw marked
TERMINAL BOARD slightly in the directi on of arrow

shown in Fig. 4.

“

“

as shown in the Fig. 3.

BBBB

”

under the CHASSIS as

CCCC

“

”

, remove the top of the AV

DDDD

“

EEEE

”

as

REMOVING THE SPEAKER

"

After removing the rear cover.

”

1. Remove the 2 screws marked

2. Follow the same steps when removing the other hand speaker.

“

as shown in Fig. 3.

FFFF

CHECKING THE PW BOARD

"

To check the back side of the PW Board.

1) Pull out the chassis. (Refer to REMOVING THE CHASSIS).

2) Erect the chassis vertically so that you can easily check t he
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, mak e sure that the wire connector is

properly connected.

"

When conducting a check with power supplied, be sure to confirm

that the CRT EARTH WIRE (BRAIDED ASS’Y) is connected to
the CRT SOCKET PW board.

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 s ure to tie the wires with
a new cable tie.

V TERMINAL

BOARD

E

D

C

V SEL. PWB

C

Fig. 4

12

No.51776

A

A

A

FRONT CABINET

A
A

V24WT5EPS

V24WT5EIS

V24WT5EKS

(24” Model)

SPEAKER

REAR COVER

MAIN PWB

FRONT CONTROL
PWB

CLAW

CRT
SOCKET
PWB

V SEL. PWB

POWER & DEF. PWB

CLAW

CHASSIS

V TERMINAL

BOARD

C

B

Fig. 3

No.51776

13

A

V28WT5EPS AV24WT5EPS

A

A

A

A
A

A

A

V28WT5EIS AV24WT5EIS
V28WT5EKS AV24WT5EKS

REMOVING THE CRT

Replacement of the CRT should be performed by 2 or more

$

persons.

After removing the 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.5).

2. While keeping the surface of CRT down, mount the TV set on the

CRT change table balanced will as shown in Fig.6.

3. Remove 4 screws marked by arrows with a box type sc rew dri ver

as shown in Fig.6.

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 cabinet slowly on

cloth (At this time, be carefully so as not to damage the front
surface of the cabinet) shown in Fig.7.

The CRT should be assembled according to the opposite

%

sequence of its dismounting steps.

The CRT change table should preferably be sm aller that the CRT

$

surface, and its height be about 35cm.

CRT CHANGE TABLE

PPROX.

35cm

CLOTH

Fig. 5

CRT

CRT
CHANGE
TABLE

BOX
TYPE
SCREW
DRIVER

COATING OF SILICON GREASE FOR ELECTRICAL
INSULATION ON THE CRT ANODE CAP SECTION.

Subsequent to replacement of the CRT and HV transformer or

%

repair of the anode cap, etc. by dismounting them, be sure to coat
silicon grease for electrical insulation as shown in Fig.8.

Wipe around the anode button with clean and dry cloth. (Fig.8)
Coat silicon grease on the section around the anode button. At
this time, take care so that any silicon greases dose not stick to
the anode button. (Fig.9)

★★★★

Silicon grease product No. KS - 650N

CRT

node button

Silicon grease

coating

CABINET

pprox.
20mm (Do not
coat grease on
this section

node button
(No sticking of
silicon grease)

Fig. 6

CRT

CRT
CHANGE TABLE

Fig. 7

Silicon grease
should be coated
by 5mm or more
from the outside
diameter of
anode cap.

Coating position
of silicon grease

node cap

Fig. 8 Fig. 9

14

No. 51776

A

A

A

REPLACEMENT OF MEMORY ICs

1. Memory ICs

This TV use memory ICs. In the memory ICs, there are memorized data
for correctly operating the video and def lection circuits. When replacing
memory ICs, be sure to use ICs written with the initial values of data.

2. Procedure for replacing memory ICs

PROCEDURE

(1)

Power off

Switch the power off and unplug the power cord from the outlet.

V28WT5EPS AV24WT5EPS

V28WT5EIS AV24WT5EIS

V28WT5EKS AV24WT5EKS

(2)

Replace ICs

.

Be sure to use memory ICs written with the initial data values.

(3)

Power on

Plug the power cord into the outlet and switch the power on.

(4)

Check and set SYSTEM CONSTANT SET:

It must not adjust without signal.

****

1) Press the INFORMATION key and the MUTING key of the
REMOTE CONTROL UNIT simultaneously.

2) The SERVICE MENU screen of Fig. 1 will be displayed.

3) While the SERVICE MENU is displayed, press the
INFORMATION key and MUTING key simultaneously, and the
SYSTEM CONSTANT SET screen of Fig. 2 will be displayed.

4) Chec k the setting values of the SYSTEM CONSTANT SET of
Table 1. If the value is different, select the setting item with the
FUNCTION UP/DOWN key, and set the correct value with the
FUNCTION -/+ key.

5) Press the MENU key to memorize the setting value.

6) P ress the INFORMATION key twice, and return to the normal
screen.

SERVICE MENU

1. IF 2. V/C

3. AUDIO 4. DEF

5. VSM PRESET 6. VPS

7. AUTO PROGRAM (OFF)

1-7 : SELECT : EXIT

Fig.1

SYSTEM CONSTANT SET

MODEL=JK_EURO (V

COUNTRY :
INCH :
MODEL : WT

OK

- + : STORE : EXIT

JVC JK-II EURO V00

******** - *****

Fig.2

*.****

**
**

)

(5)

Setting of receive channels

Set the receive channel.

NAME OF REMOTE CONTROL KEY

Names of key

key

For setting, refer to the OPERATING INSTRUCTIONS.

iiii

(6)

User settings

Check the user setting values of Table 2, and if setting value is

INFORMATION

MUTING

different, set the correct value.
For setting, refer to the OPERATING INSTRUCTIONS.

OK

▼

▼

(7)

Setting of SERVICE MEN U

Verify the setting items of the
where necessary.

SERVICE MENU

of Table 3, and reset

MENU

FUNCTION UP/DOWN

For setting, refer to th e SERVICE ADJUS TMENTS.

▼

FUNCTION -/+

No. 51776

▼

15

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V28WT5EIS AV24WT5EIS
V28WT5EKS AV24WT5EKS

SETTING VALUES OF SYSTEM CONSTANT SET (TABLE 1)

Setting value

Setting item Setting content

EK

EN

28

EP
EEIR

32

WR

COUNTRY EP IR EK

INCH

MODEL WT

24

WT

AV28WT5EPS AV28WT5EIS AV28WT5EKS
AV24WT5EPS AV24WT5EIS AV24WT5EKS

28 28 28
24

24 24

USER SETTING VALUES (TABLE 2)

PICTURE SETTING EXT SETTING

TINT
CONTRAST
BRIGHT
SHARP
COLOUR
ECO MODE

AUTO VNR
COLOUR SYSTEM

4:3 AUTO ASPECT

STEREO /
BASS

Ⅰ･Ⅱ

PICTURE FEATURES FEATURES

SOUND SETTING INSTALL

COOL

REFER to VSM PRESET

OFF

AUTO
TV : According to preset CH
EXT : AUTO
PANORAMIC

+3

ID
S-IN
DUBBING

SLEEP TIMER
BLUE BACK

CHILD LOCK
DECODER (EXT-2)

LANGUAGE

BLANK
BLANK
EXT-1→EXT-2

OFF
ON

****

ID : No.
ALL CH OFF
OFF

ENGLISH

TREBLE
BALANCE

HYPER SOUND

CENTER

OFF

EDIT/MANUAL

DEMO OFF

PRESET CH only
The others : BLANK

SERVICE MENU SETING ITEMS (TABLE 3)

Setting item Setting value S etti n g item Setting value

1. IF VCO 4. DEF. 1. V-SHIFT

2. V / C 1. CUT OFF

1. AUDIO

(Do not adjust)

2. DRIVE

3. BRIGHT

4. CONT.

5. COLOUR

6. HUE

7. BLACK OFFSET (Only SECAM)

8. SHARP

9. PURITY

1. CONC LIMIT

2. A2 ID THR

3. ALC

4. BASS

5. TREBLE

5. VSM PRESET
COOL
NORMAL
WARM

6. VPS

(Do not adjust)

7. AUTO PROGRAM

(Do not adjust)

2. V-SIZE

3. SUBTITLE

4. H-CENT

5. H-SIZE

6. EW-PIN

7. TRAPEZ

8. EW. COR. L

9. EW. COR. H

10. V. S-COR

11. V- LIN

12. H-BLK-R

13. H-BLK-L

14. V-EHT

15. H-EHT

16. EHT-GAIN

1. BRIGHT

2. CONT.

3. COLOUR

4. SHARP

5. HUE

6. R DRIVE

7. B DRIVE
VPS

PDC
ON / OFF

16

No. 51776

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A

SERVICE ADJUSTMENTS

BEFORE STARTING SERVICE ADJUSTMENT

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 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.

3. Make sure that connection is correctly made to AC power
source.

4. Turn on the power of the TV and measuring instrument for
warming up for at least 30 minutes before starting adjustment.

5. If the receive or input signal is not specified, use the most
appropriate signal for adjustment.

6. Never touch parts (such as variable resistors, transformers and
condensers) not shown in the adjustment items of this service
adjustment.

7. P reparat i on for adjustment (presetting):
Unless otherwise specified in the adjustment items, preset the
following functions with the REMOTE CONTROL UNIT:

"

Setting position

PICTURE MODE (VSM) NORMAL
SLEEP TIMER OFF
BALANCE CENTER
ECO OFF
ZOOM PANORAMIC

V28WT5EPS AV24WT5EPS

V28WT5EIS AV24WT5EIS

V28WT5EKS AV24WT5EKS

MEASURING INSTRUMENT AND FIXTURES

1. DC voltmeter (or digital voltmeter)

2. Oscilloscope

3. S i gnal generat or (Pat tern generator) [PAL / SECAM / NTSC]

4. Remote control unit

ADJUSTMENT ITEMS

●

B1 power supply check.

●

Adjustment of FOCUS.

●

IF circuit adjustment.

●

VSM preset adjust setting.

●

VIDEO / CHROMA circuit adjustment.

●

DEFLECTION circuit adjustment.

●

H. BLANKING ADJUSTMENT.

●

AUDIO circuit adjustment. (Do not adjust)

No. 51776

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V28WT5EIS
V28WT5EKS

ADJUSTMENT LOCATIONS (1)

(28” Model)

FRONT

FRONT CONTROL PWB (1)
(AV28WT5EPS/EIS/EKS)

F901

PW

POWER SW

CN001

FRONT

MAIN PWB POWER&DEF PWB

CN001

L

AV SEL PWB

CN006

MEMORY

IC702

IC701

SP R

SP L

FRONT

W DEG

TUNER

CRT SOCKET PWB

TP-47R

TP-47G

CN008

TP-E

IC301

CN008

(SOLDER SIDE)

TP-47B

E1

CN009

TOP

CN009

HV

X

1

5

1pin:B1(TP-91)
2pin:NC
3pin:NC
4pin:NC
5pin:GND

FOCUS

SCREEN

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ADJUSTMENT LOCATIONS (2)

(24” Model)

V24WT5EPS

V24WT5EIS

V24WT5EKS

FRONT

FRONT CONTROL PWB (1)
(AV24WT5EPS/EIS/EKS)

CN001

FRONT

MAIN PWB POWER&DEF PWB

PW

F901

POWER SW

AV SEL PWB

CN001

L

CN006

SP R

MEMORY

IC702

IC701

SP L

FRONT

W DEG

TUNER

CRT SOCKET PWB

TP-47R

TP-47G

CN008

TP-E

IC301

CN008

(SOLDER SIDE)

TP-47B

E1

CN009

TOP

CN009

HV

X

1

5

1pin:B1(TP-91)
2pin:NC
3pin:NC
4pin:NC
5pin:GND

FOCUS

SCREEN

No. 51776

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V28WT5EKS AV24WT5EKS

BASIC OPERATION SERVICE MENU

1. TOOL OF SERVICE MENU OPERATION

Operate the SERVICE MENU with the REMOTE CONTROL UNIT.

2. SERVICE MENU ITEMS

With the SERVICE MENU, various settings (adjustments) can be made, and they are broadly classifi ed in the following items of settings
(adjustments):
(1)
(2)
(3)
(4)

(5)

(6)

(7)

･･･････････････････････

1. IF

･･････････････････････

2.V/C

3.AUDIO

4.DEF

5.VSM PRESET

6.VPS

7.AUTO PROGRAM

･･･････････････････

･････････････････････

････････････

･････････････････････

･････････

This mode adjusts the setting values of the IF circuit.
This mode adjusts the setting values of the VIDEO / CHROMA circuit.
This mode adjusts the setting values of the multiplicity SOUND circuit.
This mode adjusts the setting values of the DEFLECTION circuit for each aspect mode given below.

REGULAR (50/60Hz)
PANORAMIC (50/60Hz)
14:9 ZOOM (50/60Hz)
16:9 ZOOM (50/60Hz)
SUB TITLE (50/60Hz)

FULL (50/60Hz)
This mode adjusts the initial setting values of COOL,NOMAL and WARM.
(VSM : Video Status Memory)
This mode shows the monitor of the VPS and PDC.
(VPS : Video Program System, PDC : Program Delivery Code)
By turning the power switch on, you can get the state of AUTO PROGRAM.

(Do not adjust)

.

(Do not adjust)

3. BASIC OPERATION OF SERVICE MENU

(1)

How to enter SERVICE MENU

Press the INFORMATION key and the MUTING key of the
REMOTE CONTROL UNIT simultaneously, and the
SERVICE MENU screen of Fig. 1 will be displayed.

(2)

Selection of SUB MENU SCREEN

Press one of keys 1～7 of the REMOTE CONTROL UNIT
and select the SUB MENU SCREEN (See Fig. 3), form the
SERVICE MENU.
SERVICE MENU → SUB MENU

1. IF

2. V / C

3. AUDIO

4. DEF.

5. VSM PRESET

6. VPS

7. AUTO PROGRAM

SERVICE MENU

SERVICE MENU

1. IF 2. V/C

3. AUDIO 4. DEF

5. VSM PRESET 6. VPS

7. AUTO PROGRAM (OFF)

1-7 : SELECT : EXIT

Fig.1

NEME OF REMOTE CONTOROL KEY

Names of key

INFORMATION

MUTING

MENU

FUNCTION UP/DOWN

FUNCTION -/+

Fig.2

key

iiii

OK

▼

▼

▼

▼

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SERVICE MENU

SERVICE MENU

1. IF 2. V/C

3. AUDIO 4. DEF

5. VSM PRESET 6. VPS

7. AUTO PROGRAM (OFF)

1-7 : SELECT : EXIT

V28WT5EPS AV24WT5EPS

V28WT5EIS AV24WT5EIS

V28WT5EKS AV24WT5EKS

SUB MENU 7. AUTO PROGRAM

(Do not adjust)

7. AUTO PROGRAM (OFF)

7. AUTO PROGRAM (ON)

COOL
NORMAL
WARM

1. BRIGHT

2. CONT.

3. COLOUR

4. SHARP

5. HUE

6. R DRIVE

7. B DRIVE

SUB MENU 5. VSM PRESET

VSM PRESET NORMAL

1.BRIGHT

- + : STORE : EXIT

OK

SUB MENU 6. VPS (Do not adjust)

VPS = 0000H(- - -)
PDC 8 / 30 / 1 = 0404H

***

VPS

: EXIT

SUB MENU 1.IF (VCO)

**

**....**

**

VCO (CW)

1. CUT OFF (R)

- +

****

****

TOO HIGH
ABOVE REFERENCE
JUST REFERENCE
BELOW REFERENCE
TOO LOW

SUB MENU 2. V/C

V/C

PAL

(G)
(B)

OK

: STORE : EXIT

MHz

****
****

****

: EXIT

1. CUT OFF

2. DRIVE

3. BRIGHT

4. CONT.

5. COLOUR

6. HUE

7. BLACK OFFSET

8. SHARP (Do not adjust)

9. PURITY (Do not adjust)

SUB MENU 3. AUDIO (Do not adjust)

AUDIO

1. CONC LIMIT 0AH
C AD BITS = 00000000

OK

: STORE : EXIT

- +

SUB MENU 4. DEF

DEF PANORAMIC

1. V-SHIFT

: STORE : EXIT

- +

OK

Fig. 3 SUB MENU SCREEN

No. 51776

***

(**)

1. CONC LIMIT

2. A2 ID THR

3. ALC

4. BASS

5. TREBLE

1. V-SHIFT

2. V-SIZE

3. SUBTITLE

4. H-CENT

5. H-SIZE

**

**

Hz

****

6. EW-PIN

7. TRAPEZ

8. EW.COR.L

9. EW.COR.H

10. V.S-COR

11. V-LIN

12. H-BLK-R

13. H-BLK-L

14. V-EHT(Do not adjust)

15. H-EHT(Do not adjust)

16. EHT-GAIN(Do not adjust)

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(3)

Method of Setting

1) Method of Setting
[VCO]

①
②
③

････････････････････････

1 Key
The VCO (CW) screen will be displayed in yellow when the AFC voltage is at a certain level and in blue when it is at other levels.
INFORMATION Key

1.IF

････････････

Select 1.IF.

Return to the SERVICE MENU screen.

2) Method of setting

①2～

5 Key

②

FUNCTION UP/DOUN Key

③

FUNCTION -/+

④

MENU Key

⑤

INFOMATION Key

3) Method of setting

･･･････････････････････････

6.VPS

7.AUTO PROGRAM

(4)

Release of SERVICE MENU

1) After completing the setting, return to the SERVICE MENU, then again press the INFORMATION key.

2.V/C, 3.AUDIO, 4.DEF

･････････････････････

･･････

････････････････

････････････････････

･････････････

and

6.VPS

･･･････････････

7.AUTO PROGRAM

and

5.VSM PRESET.

Select one from
Select settin g items.
Set (adjust) the setting values of the setting items.
(Use the number keys of the REMOTE CONTROL UNIT for setting of WHITE BALANE.

For the setting, refer to each item concerned.)
Memorize the setting value.
(Before storing the setting values in memory, do not press the CH, TV, POWER ON / OFF key ­if you do, the values will not be stored in memory.)
Return to the

This mode displayed monitor of VPS systems.
When the MAIN POWER is turned on with the state of AUTO PROGRAM ON, you get a mode
that initializes every existing s et value including language s election. Because this mode is set
at the factory upon completion of the adjustment, you need not to use it for service.

adjust in this mode.)

2. V/C, 3. AUDIO, 4. DEF

SERVICE MENU

.

screen.

and

5. VSM PRESET

(Do not adjust)

.

(Do not

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ADJUSTMENTS

CHECK ITEM

Item

Check of B1
Power Supply

Measuring

instrument

Signal
Generator

DC voltmeter

Remote
Control unit

Test point Adjustment part Description

TP-91(B1)

####

TP-E(

)
[X connector
on POWER
DEF PWB]

1. Receive a any broadc ast.

2. Push the “ZOOM” key and select the FULL mode.

3. Select 2. V/C from the SERVICE MENU.

4. Select 1. CUT OFF with Function UP / DOWN key.

5. Show one horizontal line with the 1 key.

6. Turn the SCREEN VR, the whole black screen display.

7. Connect a DC voltmeter to TP-91(B1) and TP-E(#).

8. Make sure that the voltage is DC144.5 ±2.0V.

9. Readjust the SCREEN VR to appear the horizontal line faintly,
and cancel the horizontal line to press the 2 key.

V28WT5EPS AV24WT5EPS

V28WT5EIS AV24WT5EIS

V28WT5EKS AV24WT5EKS

Check of High
Voltage

Signal
Generator

DC volunteer

Remote
Control unit

ADJUSTMENT OF FOCUS

Item

Adjustment of
FOCUS

Measuring

instrument

Signal
generator

CRT anode

Chassis GND

Test point Adjustment part Description

FOCUS VR
[In FBT]

1. Receive a any broadc ast.

2. Push the “ZOOM” key and select the FULL mode.

3. Select 2. V/C from the SERVICE MENU.

4. Select 1. CUT OFF with Function UP / DOWN key.

5. Show one horizontal line with the 1 key.

6. Turn the SCREEN VR, the whole black screen display.

7. Connect a DC voltmeter to CRT ANODE and chassis GND.

8. Make sure that the voltage is DC 30.0kV .

9. Readjust the SCREEN VR to appear the horizontal line faintly,
and connect the horizontal line to press 2 key.

1. Receive a cross-hatch signal. Select FULL mode.

2. While watching the sc reen, adjust the FOCUS VR to make the
vertical and horizontal lines as fine and sharp as possible.

3. Make sure that when the screen is darkened, the lines remain
in good focus.

+1kV

-1.5kV

FOCUS VR

SCREEN VR

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V28WT5EKS AV24WT5EKS

IF CIRCUIT ADJUSTMENT

Item

Adjustment of
VCO

Measuring

instrument

Remote
control unit

Test point Adjustment part Description

"

Under normal conditions, no adjustment is required.

1. Receive any broadcast.

2. Select 1.IF from the SERVICE MENU.

3. Check the characters colour of the JUST REFERENCE
displayed to yellow.

VCO(CW) ***.** MHz
TOO HIGH
ABOVE REFERENCE
JUST REFERENCE
BELOW REFERENCE
TOO LOW

: EXIT

VSM PRESET ADJUST SETTING

Item

Setting of
VSM PRESET

Measuring

instrument

Remote
control unit

Test point Adjustment part Description

fv

YELLOW

1. BRIGHT

2. CONT.

3. COLOUR

4. SHARP

5. HUE

6. R DRIVE

7. B DRIVE

1. Select 5.VSM PRESET from the SERVICE MENU.

2. Select COOL with the MENU key of the remote control unit.

1. Adjust the FUNCTION UP/DOWN and -/+ key to bring the set
values of 1.BRIGHT ～ 7. B DRIVE to the values shown in the
table.

4. Press the MENU key and memorize the set value.

5. Respectively select the VSM PRESET mode for NORMAL and
WARM, and make similar adjustment as in 3 above.

6. Press the MENU key and memorize the set value.

Refer to OPERATING INSTRUCTIONS for the PICTURE

$

MODE.

24

VSM preset mode

Setting item

1. BRIGHT
SETTING VALUE

2. CONT.
SETTING VALUE

3. COLOUR
SETTING VALUE

4. SHARP
SETTING VALUE

5. HUE
SETTING VALUE

6. R DRIVE
SETTING VALUE

7. B DRIVE
SETTING VALUE

No. 51776

COOL NORMAL WARM

+0 +0 +0

+12 +10 +2

+6 +0 -2

+0 +0 -2

+0 +0 +0

-20 +0 +16

+23 +0 -13

SETTING VALUES OF VSM PRESET

A

V28WT5EPS AV24WT5EPS

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V28WT5EIS AV24WT5EIS

V28WT5EKS AV24WT5EKS

VIDEO / CHROMA CIRCUIT ADJUSTMENT

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.

(Adjustment Item )

1. CUTOFF

2. DRIVE

3. BRIGHT

4. CONT.

Item

Adjustment
of WHITE
BALANCE
(Low Light)

Setting Item

R -100

G -100

B -100

R

B+0

Measuring

instrument

Signal
generator

Remote
control unit

Remote Control Unit

H.LINE ON

Colour system

Initial setting value

+0

+0

-10

Test point Adjustment part Description

1.CUT OFF

SCREEN VR
[In FBT]

H.LINE OFF

Setting item

5. COLOUR

6. HUE

7. BLACK OFFSET
(SECAM)

8. SHARP

(Do not adjust)

9. PURITY (Do not adjust)

"

Set the PICTURE MODE to NORMAL.

(R)
(G)
(B)

＊＊＊

＊＊＊

＊＊＊

1. Receive a black and white signal (colour off).

2. Select 2. V/C from the SERVICE MEN U.

3. Select 1.CUT OFF with the FUNCTION UP/DOWN key.

4. Push the “ZOOM” key and select the “PANORAMIC” mode.

5. Show one horizontal line with the 1 key.

6. Gradually turn the SCREEN VR from the left end to the right
direction to bring one of the red, green or blue colour faintly
visible.

7. Press 4～9 key, and bring out the other 2 colours and make
one horizontal line visible in white.

8. Turn the SCREEN VR and bring one white horizontal line
faintly visible.

9. Press 2 key, turn off 1.CUT OFF screen.

10. Press the MENU key and memorize the set value.

R-Y

B-Y

28”Model

24”Model

Initial setting value

PAL

+14 +0 +8

_____ ______

_____
_____

-7

-10

OFF

SECAM

+0

+0

NTSC 3.58
NTSC 4.43

_____
_____

+2

1 2

R CUTOFF

G CUTOFF

4 5

R CUTOFF

G CUTOFF

7 8

3

B CUTOFF

6

B CUTOFF

9

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Item

Adjustment
of WHITE
BALANCE
(High Light)

Measuring

instrument

Signal
generator

Remote
control unit

REMOTE CONTROL UNIT

1 2 3

4 5

7 8

Test point Adjustment part Description

6

9

2.DRIVE

DRIVE
DRIVE
DRIVE

DRIVE

(R)
(B)

(R)
(B)
(R)

(B)

＊＊＊

＊＊＊

▲
▲
▼
▼

"

The adjustment for Low Light WHITE BALANCE should be

finished.

"

Set the PICTURE MODE to NORMAL.

1. Receive a black and white signal (colour off ).

2. Sele ct 2.V/C from the SERVICE ME NU.

3. Select 2.DRIVE with the FUNCTION UP/DOWN key.

4. Change the screen colour to white with 4 key or 7 key (Drive of
Red), 6 key or 9 key (Drive of Blue).

5. Press the MENU key, and memorize the set values.

Adjustment
of
SUB BRIGHT

Adjustment
of
SUB CONT.

Remote
control unit

Remote
control unit

3.BRIGHT

4.CONT.

1. Receive any broadcast.

2. Select 2. V/C from the SERVICE MENU.

3. Select 3.BRIGHT with the FUNCTION UP/DOWN key.

4. Set the initial setting value with the FUNCTION -/+ key.

5. I f the brightness is not the best with the initial setting value,
make fine adjustment until you get the best brightness.

6. Press the MENU key and memorize the set value.

1. Receive any broadcast.

2. Select 2. V/C from the SERVICE MENU.

3. Select 4.CONT with the F UNCT ION UP/ D OW N key.

4. Set the initial setting value with the FUNCTION - / + key.

5. If the contrast is not the best with the initial setting value, make
fine adjustment until you get the best contrast.

6. Press the MENU key and memorize the set value.

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Item

Adjustment
of SUB
COLOUR

ⅠⅠⅠⅠ

Measuring

instrument

Remote
control unit

Test point Adjustment part Description

5.COLOUR

～～～～

(PAL

NTSC)

PAL COLOUR (PAL COLOUR)

SECAM COLOUR
Only

AV28WT5EPS
AV24WT5EPS

[Method of adjustment without measuring instrument]

1. Receive PAL broadcast.

2. Se lect 2.V/C from the SERVI CE MENU.

3. Select 5.COLOUR with the FUNCTION UP/DOWN key.

4. Set the initial setting value for PAL COLOUR with the
FUNCTION - or + key.

5. If the colour is not the best with the initial set value, make
fine adjustment until you get the best colour.

6. Press the MENU key and memorize the set value.

(SECAM COLOUR)

1. Receive a SECAM broadcast .

2. Make fine adjustment of SECAM COLOUR in the same
manner as for above.

NTSC COLOUR

(NTSC 3.58 COLOUR)

1. Input a NTSC 3.58MHz COMPOSI TE VIDEO signal from the
EXT terminal.

2. Make similar fine adjustment of NTSC 3.58 COLOUR in the
same manner as for above.

(NTSC 4.43 COLOUR)

1. When NTSC 3.58 is set, NTSC 4.43 will be auto mat ica lly set at
the respective values.

No. 51776

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V28WT5EKS AV24WT5EKS

Item

Adjustment
of SUB
COLOUR

ⅡⅡⅡⅡ

Measuring

instrument

Signal
generator

Oscilloscope

Remote
control unit

Test point Adjustment part Description

TP-47B

####

TP-E(
[CRT
SOCKET
PWB ]

5.COLOUR

)

～～～～

(PAL

NTSC)

PAL COLOUR (PAL COLOUR)

SECAM COLOUR
Only
AV28WT5EPS
AV24WT5EPS

[Method of adjustment using measuring instrument]

1. Receive a PAL full field colour bar signal (75% white).

2. Sele ct 2.V/C from the SERVICE ME NU.

3. Select 5.COLOUR with t he FUNCTION UP/DOWN key.

4. Set the initial setting value of PAL COLOUR with the
FUNCTION - or + key.

5. Connect the oscilloscope between TP-47B and TP-E(#).

6. Adjust PAL COLOUR and bring the value of (A) in the
illustration to the values as shown given billow (Voltage
difference between white (W) and blue (B)).

7. Press the MENU key and memorize the setting value.

MODEL VOLTAGE (W-B)
28” model +6V
24” model +4V

(SECAM COLOUR)

1. Receive a SECAM full field colour bar signal(75% whit e).

2. Set the initial setting value of SECAM COLOUR with the
FUNCTION -/+ key.

3. Adjust SECAM COLOUR and bring the value of (A) in the
illustration to the values as shown given billow (Voltage
difference between white (W) and blue (B)).

4. Press the MENU key and memorize the setting value.

W

Cy Mg B

NTSC COLOUR

(A)

(-)

0

(+)

MODEL VOLTAGE (W-B)
28” model +6V
24” model +4V

(NTSC 3.58 COLOUR)

1. Input a NTSC 3.58MHz COMPOSITE VIDEO signal (full field
colour bar with 75% white) from the EXT terminal.

2. Set the initial setting value of NTSC 3.58 COLOUR with the
FUNCTION -/+ key.

3. Adjust NTSC 3.58 COLOUR and brin g the value of
illustration to 0V

4. Press the MENU key and memorize the setting value.

(NTSC 4.43 COLOUR)

1. When NTSC 3.58 is set, NTSC 4.43 will be automatically set at
the respective values.

W-B

.

(A)

of the

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Item

Adjustment
of
SUB HUE

ⅠⅠⅠⅠ

Measuring

instrument

Remote
control unit

Test point Adjustment part Description

6. HUE [Method of adjustment without measuring instrument]

NTSC 3.58 HUE [NTS C 3.58 HUE]

1. Input a NTSC 3.58MHz COMPOSITE VIDEO signal (full field
colour bar with 75% white) from the EXT terminal.

2. Se lect 2.V/C from the SERVI CE MENU.

3. Select 6. HUE with the FUNCTION UP/DOWN key.

4. Set the initial setting value of NTSC 3.58 HUE with the
FUNCTION -/+ key.

5. If you cannot get the best hue with the initial setting value,
make fine adjustment until you get the best hue.

6. Press the MENU key and memorize the set value.

NTSC 4.43 HUE [NTS C 4.43 HUE]

1. When NTSC 3.58 is set, NTSC 4.43 will be auto mat ica lly set at
the respective values.

Adjustment
of
SUB HUE

ⅡⅡⅡⅡ

Signal
generator

Oscilloscope

Remote
control unit

W

Cy Mg B

TP-47B

####

TP-E(
[CRT
SOCKET
PWB]

6. HUE [Method of adjustment using measuring instrument]

)

NTSC 3.58 HUE [NTS C 3.58 HUE]

1. Input a NTSC 3.58MHz COMPOSITE VIDEO signal (full field
colour bar with 75% white) from the EXT terminal.

2. Se lect 2.V/C from the SERVI CE MENU.

3. Select 6. HUE with the FUNCTION UP/DOWN key.

4. Set the initial setting value of NTSC 3.58 HUE with the
FUNCTION - or + key.

5. Connect the oscill osc ope between TP-47B and TP-E(#)

6. Adjust NTSC 3.58 HUE to bring the value of
illustration to -4V (voltage difference between white (W) and
magenta (Mg)).

(B)

(-)

0

(+)

NTSC 4.43 HUE [NTS C 4.43 HUE]

7. Press the MENU key and memorize the setting value

1. When NTSC 3.58 is set, NTSC 4.43 will be automatically set at

the respective values.

(B)

in the

No. 51776

29

A

V28WT5EPS AV24WT5EPS

[Only AV28WT5EPS / AV24WT5EPS]

Item

Measuring

instrument

Test point Adjustment part Description

of BLACK
OFFSET
(SECAM)

of BLACK
OFFSET
(SECAM)

[R-Y]

Remote
control unit

ⅠⅠⅠⅠ

REMOTE CONTROL UNIT

1 2 3

4

7

ⅡⅡⅡⅡ

Signal
generator

Oscilloscope
Remote

6

5

9

8

control unit

35 PIN (R-Y)
36 PIN (B-Y)
IC-301 ON
MAIN PWB

(a) (b)

7. BLACK
OFFSET

***

(R-Y)

***

(B-Y)

BLACK OFFSET ON
BLACK OFFSET
OFF

R-Y

▲

B-Y

▲

R-Y

▼

B-Y

▼

7. BLACK
OFFSET

***

(R-Y)

***

(B-Y)

[Method of adjustment without measuring instrument]Adjustment

1. Receive a SECAM broadcast.

2. Select 2. V/C from SERVICE MEN U .

3. Select 7. BLACK OFFSET with the FUNCTION UP/DOWN
key.

4. Set the initial setting value for BLACK OFFSET (R-Y) and (B­Y) with

5. If the picture is not the best with the initial setting value, make
fine adjustment until you get the best picture.

6. Press the MENU key and memorize the setting value.

[Method of adjustment using measuring instrument]Adjustment

1. Receive a SECAM COLOUR bar signal (full f ield colour bar

2. Select 2. V/C from SERVICE MENU.

3. Select 7. BLACK OFFSET with the FUNCTION UP/DOWN

4. Connect the oscilloscope between

5. By using

6. Connect the oscilloscope between

7. By using

8. If the picture is not the best with the adjusted picture, make

9. Press the MENU key and memorize the setting value.

and 7 or 6 and 9 keys of the re mote control.

4

75% white).

key.

pin of IC-301 and TP-E

35

(#).

and 7 keys of the remote control, adjust the

4

BLACK OFFSET (R-Y) so that it becomes the waveform
changes from (a) to (b) shown in the figure.

pin of IC-301 and TP-E.

36

and 9 keys of the remote control, adjust the

6

BLACK OFFSET (B-Y) so that it becomes the waveform
changes from (c) to (d) shown in the figure.

fine adjustment until you get the best picture.

[B-Y]

(c) (d)

30

No. 51776

A

A

A

DEFLECTION CIRCUIT ADJUSTMENT

(D

t)

(D

t)

(D

t)

(D

t)

(D

t)

(D

t)

There are 7 modes of the adjustment ( 1 ) 50Hz mode (
ZOOM SUB TITLE ), ( 2 ) 60Hz mode ( each aspect mode )

"

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

"

When the 50Hz PANORAMIC mode has been established, the setting of other modes will be done automatically.
However, if the picture quality has not been optimized, adjust each mode again, respectively.

"

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

①①①①

PANORAMIC

････････････････････

depending upon the kind of s igna ls ( vert ica l f req uency 50Hz / 60Hz ).

②②②②

FULL

③③③③

REGULAR

④④④④

14:9 ZOOM

V28WT5EPS

V28WT5EIS

V28WT5EKS

⑤⑤⑤⑤

16:9 ZOOM

⑥⑥⑥⑥

16:9

Initial setting value (1/2)

Setting item Adjustment name

1. V-SHIFT Vertical center +2 -1 +0 +0 +0 +0 +0 +0

2. V-SIZE Vertical hei ght +6 -3 +16 +15 +36 +34 +38 +36

3. SUBTITLE SUBTITLE BOTTOM Vertical Linearity -8 +0 +0 +0 +0 +0 +11 +15

4. H-CENT Horizontal center -8 +4 +0 +1 +0 +0 +0 +0

5. H-SIZE Horizontal width +10 +0 -13 -14 -6 -6 -6 -6

6. EW-PIN Side pin correction -23 +0 -1 -1 -1 -1 -1 -1

7. TRAPEZ Trapezoidal distortion correction +2 -1 -1 +0 -1 +0 -1 +0

8. EW.COR.L CORNER PIN correcti on Low side +0 +0 +0 +0 +0 +0 +0 +0

9. EW.COR.H CORNER PIN correction High side +0 +0 +0 +0 +0 +0 +0 +0

10.V.S-COR Vertic al hei ght correction +4 +0 +0 +0 +0 +0 +4 +0

11.V-LIN Vertical Linearity -1 +0 +0 +0 +1 +0 +0 +0

12.H-BLK-R BLANKING POSITION of Right side +0 +0 +118 +119 +0 +0 +0 +0

13.H-BLK-L BLANKING POSITION of Left side +0 +0 +28 +24 +0 +0 +0 +0

14.V-EHT
o not adjus

15.H-EHT
o not adjus

16.EHT-GAIN
o not adjus

V size correction level caused by EHT change -4 +0 +0 +0 +0 +0 +0 +0
H size correction level caused by EHT change -3 +0 +0 +0 +0 +0 +0 +0
Size correction gain caused by EHT change +0 +0 +0 +0 +0 +0 +0 +0

(28” Model)

Initial setting value

PANORAMIC 14:9 ZOOM 16:9 ZOOM

50Hz 60Hz 50Hz 60Hz 50Hz 60Hz 50Hz 60Hz

16:9 ZOOM
SUB TITLE

Initial setting value (2/2)

Initial setting value

Setting item Adjustment name

1. V-SHIFT Vertical center -1 +0 +0 +0

2. V-SIZE Vertical height -6 -6 -3 -3

3. SUBTITLE SUBTITLE BOTTOM Vertical Linearity +0 +0 +0 +0

4. H-CENT Horizontal center +0 +0 +1 +1

5. H-SIZE Horizontal width -6 -6 -22 -23

6. EW-PIN Side pin correction -1 +0 +0 +0

7. TRAPEZ Trapezoidal distortion correction +0 +0 -1 -1

8. EW.COR.L CORNER PIN correction Low side +0 +0 +0 +0

9. EW.COR.H CORNER PIN correcti on High side +0 +0 +0 +0

10.V.S-COR Vertical height correction +0 +0 +0 +0

11.V-LIN Vertical Linearity +0 +0 +0 +0

12.H-BLK-R B LA NKI NG POSITION of Right side +0 +0 +118 +119

13.H-BLK-L BLANKING POSITION of Left side +0 +0 +31 +25

14.V-EHT
o not adjus

15.H-EHT
o not adjus

16.EHT-GAIN
o not adjus

Vsize correction level caused by EHT change +0 +0 +0 +0
Hsize correction level caused by EHT change +0 +0 +0 +0
Size correction gain caused by EHT change +0 +0 +0 +0

FULL REGULAR

50Hz 60Hz 50Hz 60Hz

No. 51776

31

A

V24WT5EPS

A

A

(D

t)

(D

t)

16.EHT-GAIN

(D

t)

(D

t)

(D

t)

(D

t)

V24WT5EIS
V24WT5EKS

Initial setting value (1/2)

Setting item Adjustment name

1. V-SHIFT Vertical center -10 -1 +0 +0 +0 +0 +1 +0

2. V-SIZE Vertical height +5 -3 +14 +14 +36 +35 +33 +35

3. SUBTITLE SUBTITLE BOTTOM Vertical Linearity -8 +0 +0 +0 +0 +0 +9 +12

4. H-CENT Horizontal center -7 +5 +0 +1 +0 +0 +0 +0

5. H-SIZE Horizontal width +14 +0 -17 -16 -10 -11 -10 -10

6. EW-PIN Side pin correct i on -4 +1 -3 -4 -3 -2 -4 -5

7. TRAPEZ Trapezoidal di stortion correction [phone]

8. EW.COR.L CORNER PIN correcti on Low side +0 +0 +0 +0 +0 +0 +0 +0

9. EW.COR.H CORNER PIN correction High side +0 +0 +0 +0 +0 -1 +1 +0

10.V.S-COR Vertical height correction -11 +0 -0 -0 +0 +0 +0 +0

11.V-LIN Vertical Linearity +0 +0 +0 +0 +0 +0 -2 -1

12.H-BLK-R BLANKING POSITION of Right side +0 +0 +116 +118 +0 +0 +0 +0

13.H-BLK-L BLANKING POSITION of Left side +0 +0 +32 +24 +0 +0 +0 +0

14.V-EHT
o not adjus

15.H-EHT

o not adjus
o not adjus

Vsize correction level caused by EHT change -4 +0 +0 +0 +0 +0 +0 +0
Hsize correction level caused by EHT change -3 +0 +0 +0 +0 +0 +0 +0
Size correction gain caused by EHT change +0 +0 +0 +0 +0 +0 +0 +0

(24” Model)

Initial setting value

PANORAMIC 14:9 ZOOM 16:9 ZOOM

50Hz 60Hz 50Hz 60Hz 50Hz 60Hz 50Hz 60Hz

16:9 ZOOM
SUB TITLE

Initial setting value (2/2)

Initial setting value

Setting item Adjustment name

1. V-SHIFT Vertical center +0 +0 +0 +0

2. V-SIZE Vertical height -6 -5 -5 -3

3. SUBTITLE SUBTITLE BOTTOM Vertical Linearity +0 +0 +0 +0

4. H-CENT Horizontal center +0 +0 +0 +1

5. H-SIZE Horizontal width -10 -11 -30 -30

6. EW-PIN Side pin correct ion -2 -3 -2 -3

7. TRAPEZ Trapezoidal distortion correction +0 +0 +0 -1

8. EW.COR.L CORNER PIN correction Low side +0 +0 +0 +0

9. EW.COR.H CORNER PIN correction High side +0 +0 +0 +0

10.V.S-COR Vertical height correcti on +0 +0 +0 +0

11.V-LIN Vertical Linearity +0 +0 +0 +0

12.H-BLK-R BLANKING POSITION of Right side +0 +0 +116 +113

13.H-BLK-L BLANKING POSITION of Left side +0 +0 +33 +24

14.V-EHT

o not adjus

15.H-EHT

o not adjus

16.EHT-GAIN

o not adjus

Vsize correction level caused by EHT change +0 +0 +0 +0
Hsize correction level caused by EHT change +0 +0 +0 +0
Size correction gain caused by EHT change +0 +0 +0 +0

FULL REGULAR

50Hz 60Hz 50Hz 60Hz

32

No. 51776

A

A

A

Item

Measuring

instrument

V-28WT5EKS AV-24WT5EKS
V-28WT5EPS AV-24WT5EPS

V-28WT5EIS AV-24WT5EIS

Test point Adjustment part Description

Adjustment
of
V-SHIFT

Adjustment
of V-SIZE &
SUBTITLE

Screen

size

Signal
generator

Remote
control unit

Screen size

1. V- SHIFT

2.V-SIZE

3.SUBTITLE

A

A

Picture

size

100%

[50Hz PANORAMIC mode]

1. Receive a circl e patt ern si gnal of vert ic al frequenc y 50Hz.

2. Select 4.DEF from the SERVICE MENU.

3. Select 1.V-SHIFT with the FUNCTION UP/DOWN key.

4. Adjust V-SHIFT to make

5. Press the MENU key and memorize the set value.

For JK chassis

****

Set all data except for "PANORAMIC" to "0".
Adjust V.CENTER of other aspects with "PANORAMIC" mode
while also taking their positions into consideration. If you want
to obtain horizontal lines with less noise on the screen, adjust
V.LIN instead of "PANORAMIC" mode.

6. Receive a cross-hatch signal.

7. Select 2.V-SIZE and set the initial setting value.

8. Adjust V-SIZE and make sure that the vertical screen size of the
picture size is in the bellow table.

9. Press the MENU key and memorize the set value.

10. When adjust the [SUBTITLE], select “3.SUBTITLE” and adjust
to under part of picture size.

11. Input a NTSC VIDEO signal (60Hz) from the EXT terminal, and
make sure that the vertical screen size is in the table below.

12. Press the MENU key and memorize the set value.

A = B

.

ASPECT

MODE

SCREEN

TOP

SCREEN
BOTTOM

Picture size 100%

PANORAMIC 14 : 9 ZOOM 16 : 9 ZOOM

87% 80% 70% 70% 92% 92%

87% 80% 70% 83% 92% 92%

[ SCREEN SIZE ]

16 : 9 ZOOM

SUB TITLE

FULL REGULAR

No. 51776

33

A

V-28WT5EKS AV-24WT5EKS

A

A

V-28WT5EPS AV-24WT5EPS
V-28WT5EIS AV-24WT5EIS

Item

Adjustment of
H.CENTER

Adjustment
of
H.SIZE

Measuring

instrument

CD

90%

Test point Adjustment part Description

4.H-CENT.

90%

L

5.H-SIZE

6. Receive a circle pattern signal.

7. Select 4.H-CENT and set the initial setting value.

8. Adjust H-CENT to make C=D.

9. Press the MENU key and memorize the set value.

10. Receive a circle patteern signal.

11. Select 5.H-SIZE and set the initial setting value.

12. Adjust H-SIZE and make sure that the horizontal screen size
of the picture size is in the bellow table.

13. Press the MENU key and memorize the set value.

ASPECT

MODE

H SIZE

Adjustment of
EW-PIN

28”

24”

※

14. Input a NTSC VIDEO signal (60Hz) from the EXT terminal,

15. Press the MENU key and memorize the set value.

PANORAMIC 14:9 ZOOM 16:9 ZOOM

PAL=95%

NTSC=94%

PAL=95%

NTSC=94%

Straight

L=495mm 92% 92% 92% L=440mm

L=425mm 92% 92% 92% L=380mm

[ SCREEN SIZE ]

6.EW-PIN

16. Select 6.EW-PIN and set the initial setting value

17. Adjust EW-PIN and make the 2nd.vertical lines at the left and

18. Press the MENU key and memorize the set value.

The numeric of the REGULAR and 14:9 ZOOM modes are
shown the length of the 90% horizontal size position( L ) as
shown in the figure above.

and make sure that the horizontal screen size of the each
ASPECT mode is in the below table.

16:9 ZOOM
SUB TITLE

right edges of the screen straight. Als o make sure that the 3rd
vertical lines are straight.

FULL REGULAR

34

No. 51776

A

V-28WT5EKS AV-24WT5EKS

A

A

V-28WT5EPS AV-24WT5EPS

V-28WT5EIS AV-24WT5EIS

Item

Adjustment
of TRAPEZ

Adjustment of
EW. COR. L/H

Straight Straight

Measuring

instrument

Signal
generator
Remote
control unit

Parallel

Signal
generator
Remote
control unit

Test point Adjustment part Description

7.TRAPEZ

8.EW. COR. L

9.EW. COR. H

19. Receive a cross-hatch signal.

20. Select 7.TRAPEZ with the FUNCTION UP/DOWN key.

21. Set the initial setting value of TRAPEZ with the FUNCTION - or
+ key.

22. Adj ust TRAPEZ and bring the VERTICAL lines at the right and
left edges of the screen parallel .

23. Press the MENU key and memorize the set value.

24. Se l e ct 8.EW. COR. L with the FUNCTION UP / DOWN key.

25. Set the init i al setting value of EW. COR. L with the FUNCTION
– or + key.

26. Adjust EW. COR. L, and bring the straight line at the low
corner.

27. Se l e ct 9.EW. COR. H with the FUNCTION UP / DOWN key.

28. Set the initial setting value of EW. COR. H with the FUNCTION
– or + key.

29. Adjust EW. COR. H, and bring the straight line at the upper
corner.

30. Press the MENU key and memorize the set value.

Adjustment
of V-S.CR &
V.LINEARITY

10. V-S.CR

11. V-LIN

TOP

CENTER

BOTTOM

No. 51776

%

When the vertical linearity has been deteriorated remarkably,
perform the following steps.

31. Receive a cross-hatch signal.

32. Select

33. Set the initial setting value of

34. Select

35. Set the initial setting value of

36. Adjust

NOTE :Do not adjust “PANORAMIC” & “16 : 9 ZOOM SUBTITLE”

****

11.V-LIN

+ key.

10.V-S.COR

- / + key.

11.V-LIN

line on

TOP, CENTER

mode.
For JK chassis
On account of CRT (ITC), set V-S.COR except for
"PANORAMIC" mode to the minimum.
When adjusting "PANORAMIC" mode, slightly expand the
space at the CENTER while taking the circularity at the
CENTER into consideration.

with the FUNCTION UP/DOWN key.

11.V-LIN

with the FUNCTION UP / DOWN key.

10.V-S.COR

and

10.V-S.COR

and

BOTTOM

with the FUNCTION - /

with the FU N C TIO N

so that the spaces of each

become uniform.

35

A

V-28WT5EKS AV-24WT5EKS

A

A

V-28WT5EPS AV-24WT5EPS
V-28WT5EIS AV-24WT5EIS

Item

Measuring

instrument

Test point Adjustment part Description

H. BLANKING ADJUSTMENT

Item

Adjustment of
H.BLANKING

Measuring

instrument

Test point Adjustment part Description

H H'

H.BLK
Capacitor
[On MAIN PWB]

At first the adjustment in 50Hz-PANORAMIC mode should be
done, then the data for the other zoom mode is c orrect ed in the
respective value at the sam e time. And confirm the deflection
adjustment initial setting value in 60Hz( NTSC EXT mode )
PANORAMIC mode. If the adjustment in 50Hz each zoom
mode has been done and stored, the data for the same aspect
modes in 60Hz is corrected in the respective value. Only the
data for the other aspect mode in 60Hz is corrected for itself.

1. Receive the PAL circle pattern signal.

2. Select 4.DEF from the SERVICE MENU.

3. Sel ect the aspect [14:9 ZOOM] mode.

4. Select 12.H-BLK-R with the FUNCTION UP/DOWN key and
adjust H-BLANKING so that 92% of the picture on the right side
is displayed.

5. Select 13.H-BLK-L with the FUNCTION UP/DOWN key and
adjust H-BLANKING so that 92% of the picture on the left side
is displayed.

6. Press the MENU key and memorize the set value.

7. Select the aspect [REGULAR] mode.

8. Select 12.H-BLK-R with the FUNCTION UP/DOWN key and
adjust H’.BLANKING so that 92% of the picture on the right side
is displayed.

9. Select 13.H-BLK-L with the FUNCTION UP/DOWN key and
adjust H-BLANKING so that 92% of the picture on the left side
is displayed.

10. Press the MENU key and memorize the set value.

36

No. 51776

A

V-28WT5EKS AV-24WT5EKS

A

A

V-28WT5EPS AV-24WT5EPS

V-28WT5EIS AV-24WT5EIS

AUDIO CIRCUIT ADJUSTMENT

"

Do not touch 3.AUDIO(1. CONC LIMIT, 2. A2 ID THR, 3. ALC, 4. BASS, 5. TREBLE) of the SERVICE MENU as it requires no adjustment.

3. AUDIO

Setting item Variable range fixed value

1. CONC LIMIT

2. A2 ID THR

3. ALC

(Do not adjust)

4. BASS

5. TREBLE

(Do not adjust)

(Do not adjust)

(Do not adjust)

(Do not adjust)

00H ～ FFH

00H ～ FFH

20MSEC 2SEC 4SEC 8SEC

-17 ～ +17

-17 ～ +17

0AH

19H

+0

+0

No. 51776

37

A

V-28WT5EKS AV-24WT5EKS

A

A

V-28WT5EPS AV-24WT5EPS
V-28WT5EIS AV-24WT5EIS

38

No. 51776

V

ICTOR COMPANY OF JAPAN, LIMITED

HOME AV NETWORK BUSINESS UNIT 1106 Heta, Iwai-city, Ibaraki-prefecture, 306-0698, Japan

4

AV28WT5EPS-U #4 AV24WT5EPS-U #4

AV28WT5EIS-U #4 AV24WT5EIS-U #4

AV28WT5EKS-U #3 AV24WT5EKS-U #3

Printed in Japan
VP 0101
DP2051