JVC AV28S2EIBL, AV28S2EIGR, AV28S2EKBL, AV28S2EKGR Service Manual

AV28S2EKGR / AV28S2EKBL

AV28S2EIGR / AV28S2EIBL

SERVICE MANUAL

COLOUR TELEVISION

BASIC CHASSIS

AV28S2EKGR / AV28S2EKBL
AV28S2EIGR / AV28S2EIBL

JK

CONTENTS

!

SPECIFICATIONS

!

SAFETY PRECAUTIONS

!

WARNING

!

FEATURES

!

MAIN DIFFERENCE PARTS LIST

!

SPECIFIC SERVICE INSTRUCTIONS

!

SERVICE ADJUSTM ENTS

!

PARTS LIST

★

OPERATING INSTRUCTIONS

★

STANDARD CIRCUIT DIAGRAM

1

････････････････････････････････

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

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

････････････････････････････････

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

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

････････････････････････････････

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

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

････････････････････････････････

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

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

････････････････････････････････

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

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

････････････････････････････････

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

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

COPYRIGHT © 2001 VICTOR COMPANY OF JAPAN, LTD.

････････････････････････････････ ････

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

･･･････････････････････････

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

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

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

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

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

････････････････････････････････

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

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

････････････････････････････････

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

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

････････････････････････

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

････････････････････････････････ ････

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

････････････････････････････････

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

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

････････････････････････････････

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

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

････････････････････

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

･････････････････

･･････････････････････････････････

･････････････････････

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

･･････････････････

････････････････････････････････････

････････

････････････････

･･･････

･･････････････

････

････････

2
4
4
5
5

6
12
31

1-1
2-1

No.51777
Mar. 2001

A

V28S2EKGR / AV28S2EKBL

A

V28S2EIGR / AV28S2EIBL

SPECIFICATIONS

Item

AV28S2EKGR
AV28S2EKBL

Content

AV28S2EIGR

AV28S2EIBL

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

D )

××××H××××

VHF
UHF

VIF Carrier
SIF Carrier

PAL

NTSC

800mm×500mm×496mm
41kg
CCIR ( I )
PAL / NTSC (Only in EXT mode)

NICAM ( I )
FLOF (Fastext)

WST(Standard system)

47MHz ～ 470MHz

470MHz ～ 862MHz 470MHz ～ 862MHz

38.9MHz ( I )

32.9MHz (6.0MHz:I)

4.43MHz

3.58MHz / 4.43MHz
AC 220V～240V , 50Hz
168W(Max) / 115W(Avg),

75Ωunbalanced, Coaxial
Visible size : 66cm, M easured diagonally

1kV

+

30.0kV (at zero beam current)

-1.5kV

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
Remote Control Unit

20cm×4cm Oval type×2

7.5W + 7.5W
21-pin Euro connector

(SCART socket)
1Vp-p 75Ω(RCA pin jack)

500mVrms(-4dBs), High Impedance (RCA pin jack)
Y : 1Vp-p POSITIVE (Negative sync Provided, when

terminated with 75Ω)

C : 0.286Vp-p

(Burst signal, when terminated with 75Ω)

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

Stereo mini jack (φ3.5mm )
RM-C55 (AAA/R03 dry battery×2)

Design & specifications are subject to change without notice

.

2

No.51777

A

V28S2EKGR / AV28S2EKBL

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V28S2EIGR / AV28S2EIBL

■

■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 AUDIO GND
5GND (B)
6 AUDIO L input 500mVrms(Nominal),

High impedance

7 B input
8 FUNCTON SW

(SLOW SW)

9GND (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

(Negative going sync), 75

1V

P-P

(Negative going sync), 75

1V

P-P

Ω○

, 75

B-W

Ω○

, 75

B-W

Ω

, 75

B-W

Ω

, 75

P-P

Ω○

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

]

No.51777

3

A

V28S2EKGR / AV28S2EKBL

A

V28S2EIGR / AV28S2EIBL

SAFETY PRECAUTIONS

1. The design of this product contains 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. Alterations of the design or circuitry 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

WARNING

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 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.

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

1. The equipment has been designed and manufactured to meet international safety standards.

2. It 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. It is essential that safety critical components are replaced by approved parts.

5. If mains voltage selector is provided, check sett i ng for local voltage.

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No.51777

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A

FEATURES

V28S2EKGR / AV28S2EKBL

V28S2EIGR / AV28S2EIBL

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 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

MAIN DIFFERENCE PARTS LIST

Model Name

!!!!

Part Name

MAIN PWB SJK-1911A-U2 ← SJK-1711A-U2 ←

AV SEL. PWB SJK0S911A-U2

!

RATING LABEL LC20091-020A-U LC20091-025A-U LC20091-039A-U LC20091-040A-U

EURO LABEL AEM1052-016-E AEM1052-015-E AEM1052-013-E AEM1052-002-E

!

INST BOOK LCT0895-001A-U

REG. SHEET AEM3148-001-E

REMOCON WINDOW LC3120 3-001A-C LC31203-001B-C LC31203-001A-C LC30203-001B-C

FRONT FRAME LC11007-001B-U LC11007-002B-U LC11007-001B-U LC11007-002B-U

AV28S2EKGR AV28S2EKBL AV28S2EIGR AV28S2EIBL

←

←

←×←

SJK0S711A-U2

LCT0896-001A-U

←

←

No.51777

5

A

V28S2EKGR / AV28S2EKBL

A

A

A

V28S2EIGR / AV28S2EIBL

SPECIFIC SERVICE INSTRUCTIONS

DISASSEMBLY PROCEDURE

REMOVING THE REAR COVER

1. Unplug the power cord.

2. Remove the 10 screws marked ”A” as shown in the Fig. 1.

3. Withdraw the rear cover toward you.

REMOVING THE SIDE CONTROL JACK ASSEMBLY

After removing the rear cover.

"

1. Remove the screw marked B as shown in the Fig.1.

2. While slightly raise the side control jack assembly, rem ove the 2
claws under the side control jack assembly.

3. Disconnect the connector “SR”, “SL”, “S”, “F” and “K” as shown
in Fig 2.

REMOVING THE SIDE CONTROL PWB

After removing the rear cover and side control jack assembly.

"

1. Remove the 3 claws “C” from back side of the side control jack
assembly as shown in Fig.2.

2. Pull out the SIDE CONTROL PWB.

REMOVING THE CHASSIS

After removing the rear cover.

"

1. Slightly raise the both sides of the 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 SPEAKER BOX

After removing the rear cover.

"

1. Remove the 2 screws marked ”D” as shown in Fig. 1.

: W hen removing the screws marked D of the speaker box

NOTE

assembly, remove the lower side screw first, and then
remove the upper one.

2. Remove the 2 screws “E” attaching the speaker box.

3. Remove the 2 screws “F” attaching the speaker.

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

REMOVING THE AV TERMINAL BOARD

After removing the rear cover.

"

1. Remove the 3 screws marked ”G” as shown in the Fig. 1.

2. Remove the claws marked “H” under the CHASSIS as shown in
Fig. 3.

3. While raising the claw marked “I”, remove the top of the AV
TERMINAL BOARD slightly in the direction of arrow ”J” as
shown in Fig. 3.

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 t hat 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.

Bef ore turning on power, make 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.

Connector

SR
SL
S

F

K

Fig. 2

J

V TERMINAL

BOARD

C

SIDE CONTROL
PWB

C

I

H

H

V SEL. PWB

Fig. 3

6

No.51777

A

A

FRONT CABINET

CRT
SOCKET
PWB

FRONT
CONTROL
PWB

V28S2EKGR / AV28S2EKBL

V28S2EIGR / AV28S2EIBL

SPEAKER

D

F

SPEAKER
BOX

E

Fig. 2

SIDE
CONTROL
JACK
ASSEMBLY

B

SPEAKER

AV SEL. PW B

D

SPEAKER
BOX

CONTROL BASE

CLAW

F

E

CLAW

AV TE RMINAL
BOARD

G

POWER &

DEF. PWB

CHASSIS

MAIN PWB

REAR COVER

Fig. 1

No.51777

A

7

A

V28S2EKGR / AV28S2EKBL

A

A

A
A

A

A

V28S2EIGR / AV28S2EIBL

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.4).

2. While keeping the surface of CRT down, mount the TV set on the
CRT change table balanced will as shown in Fig.5.

3. Remove 4 screws marked by arrows with a box type sc rew dri ver
as shown in Fig.5.

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.6.

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.

About CRT Spacer

!

An appropriate CRT spacer should be used in the corresponding
CRT in accordance with the type of the CRT.
When a CRT is replaced, special attention shoul d be paid to this
matter.

CRT CHANGE TABLE

PPROX.

35cm

CLOTH

Fig. 4

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.7.
Wipe around the anode button with clean and dry cloth. (Fig.7)
Coat silicon grease on the section around the anode butt on. At
this time, take care so that any silicon greases dose not stick to
the anode button. (Fig.8)

★★★★

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. 5

CRT

CRT
CHANGE TABLE

Fig. 6

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

Coating position
of silicon grease

node cap

Fig. 7 Fig. 8

8

No. 51777

A

A

REPLACEMENT OF CHIP COMPONENT

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.

SOLDERING IRON

!

1. Use a high insulation soldering iron with a thin pointed end of it.

2. A 30w soldering iron is recommended for easily removing 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) Shift with tweezers and remove the chip part.

####

Transistors, diodes, variable resistors, etc

(1) Apply extra solder to each lead.

V28S2EKGR / AV28S2EKBL

V28S2EIGR / AV28S2EIBL

2. How to install Chip parts

####

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.

A

(3) First solder lead

as indicated in the figure.

SOLDER

(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.

SOLDER

No.51777

A

C

(4) Then solder leads

A

C

B

and C.

B

B

9

A

V28S2EKGR / AV28S2EKBL

A

V28S2EIGR / AV28S2EIBL

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 wall outlet.

(2) Replace ICs.

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

(3) Power on

Plug the power cord into the wall 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) Check the setting val ues 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) Press 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 : **

OK

- + : STORE : EXIT

JVC JK EURO V00

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

Fig.2

*.****

**
**

)

(5) Setting of receive channels

Set the receive channel.
For setting, refer to the OPERATING INSTRUCTIONS.

(6) User settings

Check the user setting values of Table 2, and if setting value is
different, set the correct value.
For setting, refer to the OPERATING INSTRUCTIONS.

(7) Setting of SERVICE MENU

Verify the setting items of the SERVICE MENU of Table 3, and reset
where necessary.
For setting, refer to the SERVICE ADJUSTMENTS.

10

No. 51777

NAME OF REMOTE CONTROL KEY

Names of key

INFORMATION

key

iiii

MUTING

MENU

OK

FUNCTION UP/DOWN

▼

FUNCTION -/+

▼

▼

▼

A

V28S2EKGR / AV28S2EKBL

A

V28S2EIGR / AV28S2EIBL

SETTING VALUES OF SYSTEM CONSTANT SET (TABLE 1)

Setting value

Setting item Setting content

COUNTRY EK IR

ENEKEP

EE

IR

AV28S2EKGR

AV28S2EKBL

AV28S2EIGR
AV28S2EIBL

INCH 28 28

MODEL WFT

28

WFT

32

WFR

USER SETTING VALUES (TABLE 2)

PICTURE SETTING EXT SETTING

TINT
CONTRAST
BRIGHT
SHARP
COLOUR
ECO MODE

VNR
COLOUR SYSTEM

4:3 AUTO ASPECT

BASS
TREBLE
BALANCE
BBE
HYPER SOUND
SPEAKER

COOL
REFER to VSM PRESE T
REFER to VSM PRESE T
REFER to VSM PRESE T
REFER to VSM PRESE T
OFF

PICTURE FEATURES FEATURES

AUTO
TV : According to preset CH
EXT : AUTO
PANORAMIC

SOUND SETTING INSTALL

CENTER
CENTER
CENTER
ON
OFF
L/R

EXT SETTING

DUBBING

SLEEP TIMER
BLUE BACK

CHILD LOCK
DECODER (EXT-2)

LANGUAGE

EDIT

ID : BLACK
S-IN : BLACK

EXT-1→EXT-2

OFF
ON

ID : No.

****

ALL CH : OFF
OFF

ENGLISH

PRESET CH only
The others : BLANK

SERVICE MENU SETTING ITEMS (TABLE 3)

Setting item Setting value Setting 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

No. 51777

11

A

V28S2EKGR / AV28S2EKBL

A

V28S2EIGR / AV28S2EIBL

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 res istors, transformers and
condensers) not shown in the adjustment items of this service
adjustment.

7. Preparation 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

MEASURING INSTRUMENT AND FIXTURES

1. DC voltmeter (or digital voltmeter)

2. Oscilloscope

3. Signal generator (Pattern generator) [PAL / NTSC]

4. Remote control unit

ADJUSTMENT ITEMS

Checking items.

●

Adjustment of FOCUS.

●

IF circuit adjustment.

●

VSM preset setting.

●

VIDEO / CHROMA circuit adjustment.

●

DEFLECTION circuit adjustment.

●

H. BLANKING ADJUSTMENT.

●

AUDIO circuit adjustment. (Do not adjust)

●

12

No. 51777

A

A

A

A

ADJUSTMENT LOCATIONS

)

SIDE CONTROL JACK PWB

TOP

V28S2EKGR

V28S2EKBL
V28S2EIGR

V28S2EIBL

SR

SL

FRONT

FRONT

FRONT CONTROL PWB

F901

PW

POWER SW

MAIN PWB POWER&DEF PWB

CN001

L

AV SEL PWB

CN006

MEMORY

W

IC702

CN102

IC701

UP

DOWN

MENU

W DEG

S

F

K

FRONT

TOP

TUNER

CRT SOCKET PWB

TP-47R

TP-47G

CN008

TP-E

IC301

CN008

(SOLDER SIDE)

TP-47B

E1

CN009

CN009

HV

HVT

FOCUS 1
FOCUS 2

SCREEN

X

1
5

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

No. 51777

13

A

V28S2EKGR / AV28S2EKBL

A

V28S2EIGR / AV28S2EIBL

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) 1. IF
(2) 2.V/C
(3) 3.AUDIO
(4) 4.DEF

(5) 5.VSM PRESET

･･･････････････････････

･･････････････････････

･･･････････････････

･････････････････････

････････････

(6) 6.VPS

(7) 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)
16:9 ZOOM 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. AUT O PRO GR AM

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

▼

▼

▼

▼

14

No. 51777

A

A

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

V28S2EKGR / AV28S2EKBL

SUB MENU 7. AUTO PROGRAM

(Do not adjust)

7. AUTO PROGRAM (OFF)

7. AUTO PROGRAM (ON)

V28S2EIGR / AV28S2EIBL

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 =

OK

- +

SUB MENU 4. DEF

DEF PANORAMIC

1. V-SHIFT

- +

OK

********

: STORE : EXIT

: STORE : EXIT

Fig. 3 SUB MENU SCREEN

No. 51777

***
(**)

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)

15

A

V28S2EKGR / AV28S2EKBL

A

V28S2EIGR / AV28S2EIBL

(3)

Method of Setting

1) Method of Setting
[VCO]

1 Key

①
②
③

････････････････････････

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
5 Key

①2～

FUNCTION UP/DOWN Key

②

FUNCTION -/+

③

MENU Key

④

INFORMATION Key

⑤

3) Method of setting

6.VPS

･･･････････････････････････

7.AUTO PROGRAM

(4)

Release of SERVICE MENU

1) A fter 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 setting items.
Set (adjust) the setting values of the setting items.
(Use the number keys of the REMOTE CONTROL UNIT for setting of WHITE BALANCE.

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

16

No. 51777

A

A

ADJUSTMENTS

CHECKING 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 any broadcast.

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 horizontal one 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.

V28S2EKGR / AV28S2EKBL

V28S2EIGR / AV28S2EIBL

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]

FOCUS 1 VR
FOCUS 2 VR

SCREEN VR

1. Receive any broadcast.

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 horizontal one 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 31.0kV .

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.

2. By turning the FOCUS 2 VR, adjust the to make the vertical
lines as fine and sharp as possible.

3. By turning the FOCUS 2 VR, adjust the picture so that the 5th
vertical line from left side of the cross-hatch picture becomes
thinnest.

4. By turning the FOCUS 1 VR, adjust the 3rd horizontal line from
the upper side may become uniform at the line c enter and its
periphery.

5. Carry out adjustment by repeating the steps 3 and 4 about.

6. Make s ure that when the screen is darkened, the lines remain
in good focus.

+1kV

-1.5kV

FOCUS 1

FOCUS 2

No. 51777

17

A

V28S2EKGR / AV28S2EKBL

A

V28S2EIGR / AV28S2EIBL

IF CIRCUIT ADJUSTMENT

Item

Adjustment of
VCO

Measuring

instrument

Remote
control unit

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

: EXIT

VSM PRESET SETTING

Item

Setting of
VSM PRESET

Measuring

instrument

Remote
control unit

Test point Adjustment part Description

Under norm al c onditi ons, no adjustment is required.

"

1. Receive any broadcast.

2. Select 1.IF from the SERVICE MENU.

3. Check the characters colour of between the “ABOVE
REFERENCE” and “BELOW REFERENCE” displayed to

fv

YELLOW

yellow.

Test point Adjustment part Description

1. BRIGHT

2. CONT.

3. COLOUR

4. SHARP

5. HUE

6. R DRIVE

7. B DRIVE

1. Select 5.VSM PRE SET from the SERVICE MENU.

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

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

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

5. Respec tively 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.

18

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. 51777

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 VALU ES OF VSM PRESET

A

V28S2EKGR / AV28S2EKBL

A

V28S2EIGR / AV28S2EIBL

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
(Only 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 MENU.

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 t o 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

Initial setting value

PAL

+14 +8

_____

_____ ______
_____ ______

-7

OFF

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

No. 51777

19

A

V28S2EKGR / AV28S2EKBL

A

V28S2EIGR / AV28S2EIBL

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

3. Select 2.DRIVE with the FUNCTION UP/DOW N 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. If 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 FUNCTION UP/DOWN 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.

20

No. 51777

A

V28S2EKGR / AV28S2EKBL

A

V28S2EIGR / AV28S2EIBL

Item

Adjustment
of SUB
COLOURⅠ

Ⅰ

ⅠⅠ

Measuring

instrument

Remote
control unit

Test point Adjustment part Description

5.COLOUR
(PAL / NTSC)

PAL COLOUR (PAL COLOUR)

NTSC COLOUR (NTSC 3.58 COLOUR)

[Method of adjustment without measuring instrument]

1. Receive PAL broadcast.

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

1. Input a NTSC 3.58MHz COMPOSITE 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 w ill b e automatically set at
the respective values.

No. 51777

21

A

V28S2EKGR / AV28S2EKBL

A

V28S2EIGR / AV28S2EIBL

Item

Adjustment
of SUB
COLOUR Ⅱ

Ⅱ

ⅡⅡ

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)

[Method of adjustment using measuring instrument]

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

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

3. Select 5.COLOUR with the 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
illustration to the values are shown given below. (Voltage
difference between white (W) and blue (B)).

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

VOLTAGE (W-B) +2V

(A)

in the

W

Cy Mg B

NTSC COLOUR (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. S et the initial setting value of NTSC 3.58 COLOUR with the
FUNCTION -/+ key.

3. Adjust NTSC 3.58 COLOUR and bring the value of
illustration to

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

(-)

(A)

0

(+)

(NTSC 4.43 COLOUR)

1. When NTSC 3.5 8 is se t , NT SC 4.43 will be au tomatically set at
the respective values.

0V (

W-B)

of the

(A)

.

22

No. 51777

A

V28S2EKGR / AV28S2EKBL

A

V28S2EIGR / AV28S2EIBL

Item

Adjustment
of
SUB HUEⅠ

Ⅰ

ⅠⅠ

Measuring

instrument

Remote
control unit

Test point Adjustment part Description

6. HUE [Method of adjustment without measuring instrument]

NTSC 3.58 HUE [NTSC 3.58 HUE]

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

2. Select 2.V/C from the SERVICE 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 [NTSC 4.43 HUE]

1. When NTSC 3.58 is set, NTSC 4.43 w ill b e automatically set at
the respective values.

Adjustment
of
SUB HUEⅡ

Ⅱ

ⅡⅡ

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 [NTSC 3.58 HUE]

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

2. Select 2.V/C from the SERVICE 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 oscilloscope between TP-47B and TP-E(")

6. Adjust NTSC 3.58 HUE to bring the value of

0V (

W-Mg)

(voltage difference between white (W)

(B)

(-)

0

(+)

NTSC 4.43 HUE [NTSC 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

illustration to
and magenta (Mg)).

the respective values.

(B)

in the

No. 51777

23

A

V28S2EKGR / AV28S2EKBL

A

V28S2EIGR / AV28S2EIBL

DEFLECTION CIRCUIT ADJUSTMENT

There are 6 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 signals ( vertical frequency 50Hz / 60Hz ).

････････

②②②②

FULL

③③③③

REGULAR

④④④④

14:9 ZOOM

⑤⑤⑤⑤

16:9 ZOOM

⑥⑥⑥⑥

16:9

Initial setting value (1/2)

Initial setting value

Setting item Adjustment name

1. V-SHIFT Vertical center +5 -2 +0 +0 -1 0 0 0

2. V-SIZE Vertical height +1 -3 +9 +10 +30 +31 +34 +32

3. SUBTITLE

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

5. H-SIZE Horizontal width [phone]

6. EW-PIN Side pi n correction -14 -1 -3 -1 -1 +1 -2 -1

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

8. EW.COR.L CORNER PIN correct i on Low side -1 +0 +1 +1 +1 +1 +1 +1

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

10.V.S-COR

11.V-LIN Vert ical Li nearity 0 -4 +1 +1 -3 -4 -1 +1

12.H-BLK-R BLANKING POSITION of Right side +0 +0 +116 +117 +0 +0 +0 +0

13.H-BLK-L BLANKING POSITION of Left side +0 +0 +42 + 34 +0 +0 +0 +0

14.V-EHT

15.H-EHT

16.EHT-GAIN

SUBTITLE BOTTOM Vertical Linearity 000000+5+5

*

Vertical height correction +15 +0 -15 -15 -15 -15 -15 -15

*

V size correction level caused by EHT change -2 +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

*

Initial setting value (2/2)

Setting item Adjustment name

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

2. V-SIZE Vertical height -16 -13 -6 -7

3. SUBTITLE SUBTITLE BOTTOM Vertical Linearity 0000

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

5. H-SIZE Hori zontal width -13 -12 -23 -23

6. EW-PIN Side pin correction 0 +2 -1 +2

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

8. EW.COR.L CORNE R PIN correc tion Low side +1 +1 +1 +1

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

10.V.S-COR Vertical height correction -10 -15 -5 -5

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

12.H-BLK-R BLANKING POSITION of Right side +0 +0 +116 +117

13.H-BLK-L BLANKING POSITION of Left side +0 +0 +40 +36

14.V-EHT

15.H-EHT

16.EHT-GAIN

*

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

PANORAMIC 14:9 ZOOM 16:9 ZOOM

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

Marked * : Fixed value

•
Initial setting value

FULL REGULAR

50Hz 60Hz 50Hz 60Hz

Marked * : Fixed value

•

16:9 ZOOM
SUB TITLE

24

No. 51777

A

A

Item

Measuring

instrument

V28S2EKGR / AV28S2EKBL

V28S2EIGR / AV28S2EIBL

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 circle pattern signal of vertical frequency 50Hz.

2. Select 4.DEF from the SERVICE MEN U.

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. 51777

25

A

V28S2EKGR / AV28S2EKBL

A

V28S2EIGR / AV28S2EIBL

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-CE NT and set t he initial setting value.

8. Adjust H-CENT to make

9. Press the MENU key and memori ze t h e set value.

10. Receive a circle pattern signal.

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

12. Adjust H-SIZE and make sure that the horizontal screen size

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

.

C=D

of the picture size is in the bellow table.

ASPECT

MODE

H SIZE

Adjustment of
EW-PIN

※

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

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

PANORAMIC 14:9 ZOOM 16:9 ZOOM

PAL=95%

NTSC=94%

Straight

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

[ 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.

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

26

No. 51777

A

V28S2EKGR / AV28S2EKBL

A

V28S2EIGR / AV28S2EIBL

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. Sel e ct 8.EW. COR. L with the FUNCTION UP / DOWN key.

25. Set the initi 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.

No. 51777

27

A

V28S2EKGR / AV28S2EKBL

A

V28S2EIGR / AV28S2EIBL

Item

Adjustment
of V-S.COR &
V.LINEARITY

Measuring

instrument

Test point Adjustment part Description

10. V-S. COR

11. V-LIN

TOP

CENTER

BOTTOM

"

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 s etting value of

36. Adjust

NOTE

****

11.V-LIN

+ key.

10.V-S.COR

- / + key.

11.V-LIN

line on

TOP, CENTER

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

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 FUNCTION

so that the spaces of each

become uniform.

At first the adjustment in 50Hz-PANORA MIC mode should be
done, then the data for the other zoom mode is c orrected in the
respective value at the same 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.

28

No. 51777

A

A

H. BLANKING ADJUSTMENT

Item

Measuring

instrument

Test point Adjustment part Description

V28S2EKGR / AV28S2EKBL

V28S2EIGR / AV28S2EIBL

Adjustment of
H.BLANKING

H H'

H.BLK
Capacitor
[On MAIN PWB]

1. Receive the PAL circle pattern signal.

2. Select 4.DE F from the SERVICE MENU.

3. Select 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.

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. 51777

29

A

V28S2EKGR / AV28S2EKBL

A

V28S2EIGR / AV28S2EIBL

30

No. 51777

V

ICTOR COMPANY OF JAPAN, LIMITED

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

4

AV28S2EKGR-U #4 AV28S2EKBL-U #4

AV28S2EIGR-U #4 AV28S2EIBL-U #4

Printed in Japan
VP 0103
DP2051