JVC AV-2105EE, AV-21LMG3, AV-21LMG3/-A, AV-21LMT3, AV-21LT3 Service Manual

AV-21LMT3 / AV-21LTR

3

3

E

AV-21LT3 / AV-21LMG

SERVICE MANUAL

COLOUR TELEVISION

AV-2105E

AV-21LMT3 / AV-21LTR3

AV-21LT3 / AV-21LT3

/AU

AV-21LMG3 / AV-21LMG3

AV-2105EE

BAS IC CHASSIS

CG

/-A

[R M-C90] [

RM-C 364G Y]

CONTENTS

!

SPECIFICATIONS

! SAFETY PRECAUTIONS ････････････････････････････････
! FEATU RES････････････････････････････････
!

FUN CTIONS ････････････････････････････････

! MAIN DIFFERENCE LIST ････････････････････････････････
!

SPECIFIC SERVICE INSTRUCTIONS

!

SERVICE ADJUSTMENTS ････････････････････････････････

! PARTS LIST ････････････････････････････････

★ OPERATING INSTRUCTIONS
★ ST AND AR D CIRCUIT DIAGRAM ････････････････････････････････

1

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

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

････････････････････････････････

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

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

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

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

･･･････････････････････････････････

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

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

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

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

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

････････････････････････････････

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

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

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

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

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

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

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

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

COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD.

･････････････････････････････

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

･･････････････････････････････････

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

････････････････････････････････････ 33

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

･･･････････････････････ 3

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

･･･ 4

･･････

･･ 5

････

･･･････････････････････ 7

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

･････････････

･･････････････････････････

･････････････････････ 15

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

････････････････ 2-1

････････････････････････････････

2

8

No. 52030

Jun. 2002

A

V-21LMT3/AV-21LTR3

A

A

(p-p),

)

V-21LT3/AV-21LMG3
V-2105EE

SPECIFICATIONS

/AU

CONT ENTS

AV-21LMT3

AV-21LMG3

/

AV-21LMG3

ITEM

AV-21LTR3 / AV-2105EE

AV-21LT3 / AV-21LT3

Dimen sions( W×H×D) 598mm×468mm×471.5mm

Mass 22kg

TV RF System B/ G, I, D/K B/ G, I, D/K , M

RF Mode PAL / SECAM PAL / SECAM / NTSC3.58 / NTSC4.43

Colour System

VIDEO Mode PAL / SECAM / NTSC3.58 / NTSC4.43

Telet ext System FLOP (Only f or AV-21LTR3) FLOP (Only f or AV-21LMT3)

Pi ctur e Tube

Visible siz e: 51cm measured diagonally

High Voltage 26.5kV±1.5kV(at zero beam current)

Receiving Frequency VHF (VL) 46.25MHz～140.25MHz

VHF (VH) 143.25MHz～423.25MHz

UHF 439.25MHz～865.25MHz

Cable TVs of Mid ( X-Z, S1-S10)

CATV

Super (S11-S20) & Hyper (S21-S41)
bands recei vable

VIF Carrier 38.0MHz

Intermediate
Frequen cy

SIF Carrier

32.5MHz (5.5MHz)

31.5MHz (6.5MHz)

32.0MHz

(6.0MHz)

32.5MHz(5.5MHz) /33.5MHz (4.5MHz)

31.5MHz (6.5MHz)

32.0MHz

(6.0MHz)

PAL (4.43MHz),

Col ou r S ub C arr ier Fr eq uen cy

SECAM (4. 40625MHz / 4.25MHz)
NTSC (3.58M Hz / 4.43MHz)

[AV-21LTR3 / AV-21LT3 / AV-2105EE]

Power Input Rated Volt age

: AC110～240V, 50 / 6 0Hz
[AV-21LT3

/AU

]

AC110～240V, 50 / 6 0Hz

: AC220～240V, 50 / 6 0Hz

Power Co nsumpti on 100W (Max) / 65W(Avg)

Speaker 5cm×12 cm, Oval type×2

Audio Output 3W (monaural )

Aer ial In put Termin al 75Ω Unbalanced

Input

Output

Video 1V

Audio

500mV(rms) (-4dBs), High impedance,
RCA×2 (F ront / Rear)

75Ω (Front / Rear

Video 1V(p-p), 75

Ω

Audio 500mV(rms) (-4dBs), Low impedance,

/-A

Headphone jack

3.5mm mini jack

[AV-21LT3 / AV-21LT3

Remote Control Unit

: RM-C364G Y
[AV-21LTR3]

: RM-C90
(Batter y size : AA / R06 / UM -3×2)

Design and specifications are subject to change without notice.

2

/AU

No. 52030

/ AV-2105EE]

[AV-21LMG 3 / AV-21LMG3

/-A

]
: RM-C364G Y
[AV-21LMT3]

: RM-C90
(Batter y size : AA / R06 / UM -3×2)

A

3

A

3

A

SAFETY PRECAUTIONS

V-21LMT3/AV-21LTR

V-21LT3/AV-21LMG

V-2105EE

1. The d esign of th is pr od uct c on tains speci al har d wa re , ma ny
circuit s and components spe cially for safety pur poses. For
con tinu ed pr ot ection , n o c han g es sh ou ld b e ma de to the o rig inal
d esi gn un les s a uth or i zed in wri ti n g by th e ma nu fact ur er .

Replacem en t par ts must b e id ent ic al to thos e u s ed i n th e origin al
ci rcu its. S ervi ce sho uld b e p erfor m ed by qu alif ied p ers onnel
on ly.

2. Alte r ati on s of t he desig n or circui tr y of t he pr od ucts s h oul d not be
made. Any design alterations or additions will void the
manu fact ur er 's warrant y and w i ll f urth er r elieve t he ma nufac tu rer
of r esp onsi b ility for perso nal inj ur y or p rop er ty d am ag e r esult in g
th erefr om.

3. Man y elec tr i cal and mech anic a l p ar ts in th e products have
special safety-related characteristics. These characteristics are
oft en no t e vi den t f r om vis ua l i nsp ection n or ca n t he pr o tect io n
aff or de d by them nece ssarily b e ob tain ed b y us ing rep l acem en t
com po ne nts rated for hig he r voltag e, w att ag e, etc. Rep lacem en t
p arts whic h ha v e th ese s p ecial s afet y ch ar ac t erist ics ar e

ide ntified i n the parts li st of S ervice manua l. El ectric al

components having such features are identified by shading
on t he sche mat ic s and by (!!!! ) on the parts list in Service
manual. The us e of a s ub sti tu te rep lacem en t which do es n ot

h ave th e s ame saf ety ch ar act er ist ics as t he r eco mmen de d
replac em ent part sh own in th e p ar ts list of S er v ice m an ual m ay

cause shock, fire, or other hazards.

4. Do n't shor t 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
diff er enc e of th e GND is s ho wn b y th e LIV E : ( ") side GND, the
ISO LATE D(N EUTRAL) : (#) si de GND and EARTH : ( $) side
GND. Do n't s h or t bet we en th e LIV E sid e GN D an d

ISO LATE D(N EUTRAL) side GND or EART H side GND an d
n ever m ea sur e w it h a mea suri ng appa r atus ( osci l losc op e etc.)
th e LI VE sid e GND an d IS OLA T ED (NE UTR AL ) s ide G ND or
EARTH side GND at the s ame time.
If above note will not b e kept, a fuse or any parts will be broken.

5. If any repair has been made to the chassis, it is recommended
th at t he B1 s et ting shou ld be ch ecke d or adju ste d ( Se e
ADJUST M ENT OF B 1 POW E R SUPPL Y).

6. The hi gh volta ge app lie d t o th e pi ctu r e tube mu st con for m wit h
th at s p ec ifi ed i n S er v ice m an ual. E xcessi ve h igh voltag e ca n

cau s e an i ncre ase in X-Ray em i ssi on , ar c i ng an d possib le
component damage, therefore operation under excessive high
voltage conditions should be kept to a minimum, or should be
preve nt ed. If s evere arc in g occurs, remove t he AC power

immed i ate ly and de termine th e ca use by visua l insp ect ion
(inc or r ect install at ion, cr ac ke d or melte d high volt age har n es s,
p oor so ldering, et c .) . To mai nt ain the p rope r minimu m le v el of
sof t X- R ay emis si on, c omp on en ts in th e hi gh voltag e circui tr y
incl ud i ng t he pic t ur e tu be must be t he e xac t r ep lac em e nts or

alte rn at ives approve d by th e ma nuf act urer of the c omplet e
prod uct.

7. D o n ot c hec k high volt age b y drawi ng an ar c. U se a hi gh volt ag e
meter or a hi g h v ol tag e pr ob e wi t h a V TVM . D i sc ha rg e th e
picture tube before attempting meter connection, by connecting

a cl i p lead to the grou nd frame a nd c onn ectin g th e oth er end of
the lead through a 10kΩ 2W resi sto r to the an od e butt on .

8. W hen se r vice is r equ ir e d, obser v e th e or i gi na l lea d dr ess. E xtr a
prec aut ion sh ou ld b e g i ven t o as sure cor r ec t l ea d dress in th e
high vol tag e ci r cuit a r ea. W here a s hor t ci r cuit h as occu rre d,
th ose co mponent s tha t indic a te evi de nc e of ove r hea ting should

b e r e pl aced. A l wa ys use th e ma nuf act ur er 's r ep lac em en t
components.

9. Isol ation Check

(Safety for Electrical Shock Hazard)

Af ter r e- as s embling th e p r odu c t, alw ays per f orm an is ol at io n
ch ec k on the ex po sed me tal p ar ts of t he c abin et ( a nte nn a

ter m ina ls, video /au dio inpu t and ou tput t erminals, C on trol kn obs,
metal cabin et, screwhe ad s, ea r ph one jac k, con tr ol shaf ts , etc.)
to be s u re the p r odu c t i s s af e t o o pe r ate wi th ou t d an ger of
elect rical shoc k.

(1) Di electric Strength Test

The i so l ati on be tween the AC pr im a ry ci rcu it an d all metal p ar ts
exp osed t o th e us er, p arti c ularly an y expos ed met al p art having a
retu rn p ath to t he chass is s ho ul d withs tan d a vol t age of 3 000V
AC (r.m.s.) for a period of one second.

(. . . . W it hs tan d a vo lt ag e of 110 0V A C (r.m. s .) to an ap plianc e

rate d up to 12 0V , an d 3 00 0V AC ( r .m. s.) to an ap pl i an c e r at ed
200V or more, for a period of one second.)
This meth od of test requires a t est equi pmen t n ot gener ally found
in t he s er vic e trade.

(2) Leakage Current Check

Plug th e AC l in e c ord d irect ly into th e AC ou tlet ( do n ot us e a lin e
isol ati o n transf ormer du ring this ch eck.) . U s in g a " Lea kag e

Curr ent Teste r", me asure th e lea kage cu rr e nt f rom each exp osed
metal p ar t of the c a bi ne t, p art icularly any e xpos ed me tal p art
h avi ng a re turn pa th to t he c h assis , t o a kn ow n go od ea rt h
grou nd (wa ter pi p e, e tc.) . An y l eaka ge curren t m ust n ot e xc eed

0.5mA AC (r.m.s.).
Howev e r, i n tropic al ar ea , th is must no t exc e ed 0.2 mA AC
(r.m.s.).

"""" Altern at e Che ck M ethod

Plug th e AC l in e c ord d irect ly into th e AC ou tlet ( do n ot us e a lin e
isol ati o n transformer during t hi s che c k.). Use an AC v o lt me ter

h avi ng 1 000 oh ms pe r volt or m or e sens it ivity i n th e fo llowing
mann er . C on nec t a 1 50 0Ω 10W res ist or para lle le d b y a 0 .1 5µF

AC-type c apa cit or bet ween an ex po sed met al pa rt a nd a kno wn
g ood e ar th gr o un d ( water pi pe , etc.). M eas ure th e AC volt ag e
acr oss th e res ist or with th e AC v o l tm eter. M ove th e r esistor
con nec tion to e ach exp os e d me tal par t, part i cularly a ny exp osed

metal p ar t hav in g a r etu rn pat h to t he chassis, an d measu re th e
AC vol tag e ac ro s s the r es ist or . Now, re ver s e th e plu g in th e AC
ou tl et and r e pe at eac h m ea suremen t. An y volt ag e me as u re d
must no t e xceed 0 .7 5V AC (r .m.s.). This c orre spo nds to 0 .5mA
AC (r.m.s.).

Howeve r, in tropica l area, this must not exceed 0.3V AC ( r.m.s.).
This corresponds to 0.2mA AC (r.m.s.).

AC VOLTMETER
(HAVING 1000 Ω /V,
OR MOR E SENSIT IVITY)

0.15μF AC-T YPE

PLACE THIS PROBE

1500 Ω 10W

GOOD EARTH GROUND

ON E A C H EX PO SE D
ME T AL PA RT

No.52030

3

A

V-21LMT3/AV-21LTR3

A

A

V-21LT3/AV-21LMG3
V-2105EE

FEATURES

"

N ew ch ass i s d esign en abl es us e of an i nt eracti ve on-scr ee n c ont ro l.

"

W ide r an ge volt age (110V ～2 40V ) AC p ower input. (Exce pt f or AV -2 1LT3

" W ith AUDIO / VI DEO IN PUT & OUTPUT termina l.
"

MU TING button can red uce th e a udio l evel to zer o i nst ant ly.

" F unct i on al remote co ntr ol t o oper ate T V set (f or ch annel se l ect, v olume c ontrol, p ower ON /OF F , etc. ) f rom a d ist anc e.
"

I2C bu s con tr ol ut ilizes single chi p ICs for IF, V /C, DEF. V SM PRES ET, PRESET & SETUP T OUR.

" By m e ans of AU T O PR OGRA M, the TV s tatio ns c an be s elec te d aut omatic a lly a nd the TV cha nn els c an al so b e r ear r an ge d aut omatic al ly.
" T he TELETEXT SYST EM ha s a built-in F L OP s yst em. (Only f or AV - 21LMT3 / A V-21lLTR3)
"

Bu ilt-in E CO MOD E (ECONOMY, ECOLOG Y)

In acco rdanc e with th e br ig ht ness i n a r oo m, th e br ig ht ness and / of con trast of the p i cture can b e a dj ust ed au tom at ic ally to make th e

op ti mu m pictu re w hi ch is eas y on the e ye.

" Built – in ON TIMER, RETURN + & CHILD LOCK.

SYSTEM BLOCK DIAGRAM

"

/AU

)

IC702

MEMORY

IC701

SCL2/SDA2 TCL/TDA

MICRO

COMPUTER

IC301

VIDEO/ CHROMA

DECORDER

SCL1/SDA1

IC821

TEXT DECORDER

Only f or AV-21LMT3 / A V-21LTR 3

TU001

TUNER

4

No. 52030

A

3

A

3

A

FUNCTIONS

■

FRONT PANEL

MENU buttons

1

CHANNEL －/＋ buttons

2

VOLUME －/＋ bu tto ns

3

AI ECO s en sor

4

REMO TE CON T R OL s ens or

5

ON TIMER lamp

6

POWER lamp

7

MAIN POWER button

8

A/V INPU T terminal

9

HEAD PHONE j ack

10

V-21LMT3/AV-21LTR

V-21LT3/AV-21LMG

V-2105EE

10 9 1 2 3 4 5 6 7 8

■

REAR TERMINAL

1

ANT Terminal

1

2

3

4

5

VIDEO INPU T Term i nal

2

VIDEO OUTPUT Terminal

3

AUDIO INPUT Termin al

4

AUDIO OUT PUT Terminal

5

No. 52030

5

A

V-21LMT3/AV-21LTR3

A

A

V-21LT3/AV-21LMG3
V-2105EE

■

REMOTE CO NT ROL UNIT

RM-C90 : AV-21LMT3 / AV-21LTR3

1

2

3

4

5

6

7

8

9

10

12

ECO S ENSOR ke y

1

COLOUR SY STEM ke y

11

13

14

15

16

17

18

2

SOUND SYSTEM key

3

DISPLAY k ey

4

TV/VI DEO key

5

OFF TIMER key

6

PICTURE MODE key

7

CHANNEL SCAN key

8

RETURN＋key

9

CHA NNEL －/＋ key

10

POWER key

11

MUTING key

12

TV/TEXT key

13

MENU ke y

14

MENU ▲/▼ key

MENU / key

Number (CH.) key

15

－/－－

16

VOL UME －/＋ key

17

Teletext key

18

key

RM-C364GY : AV-21LT3 / AV-21LT3/AU / AV-21LMG3 / AV-21LMG3/-A / AV-210 5EE

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

ECO S ENSOR ke y

1

SOUND SYSTEM key

2

COLOUR SY STEM ke y

3

TV/V IDEO key

4

OFF TIMER key

5

CHA NNEL SC AN k ey

6

RETURN＋key

7

DISPLAY key

8

CHANNEL key

9

POWER key

10

PICTURE MODE key

11

Number (CH.) key

12

－/－－key

13

MUTING key

14

MENU ke y

15

MENU ▲/▼ key
MENU －/＋ key

VOL UME－/＋ key

16

6

No. 52030

A

3

A

3

A

MAIN DIFFERENCE LIST

V-21LMT3/AV-21LTR

V-21LT3/AV-21LMG

V-2105EE

Part Name

Model Name

AV-21LM T3 SCG-1316-H2 RM-C90-1H GG10129-025A-H QMPR340-165-K2

AV-21LTR 3

AV-21LT3

AV-21LT3

AV-21LM G3 SCG-1317-H2 GG10129-025A-H QMPR340-165-K2

AV-21LM G3

AV-2105EE

/AU

/-A

Part Name

Model Name

AV-21LM T3

AV-21LTR 3

AV-21LT3

AV-21LT3

AV-21LM G3 LCT1196- 001A-H LCT1197- 001A- H

AV-21LM G3

AV-2105EE LCT1195- 001A-H BT-54012-2

/AU

/-A

Main PWB Remote Control Unit Front Cabinet Power Cord

SCG-1414-H2

SCG-1405-H2 RM-C364GY-1H GG10129-012A-H

SCG-1416-H2 GG10129-027A-H QMPG090-165-K2

SCG-1415-H2 GG10129-027A-H QMPR340-165-K2

Packing Case Inst Book Digest Manual Warranty Card

GG10044-045A-H LCT1174- 001A-H LCT1175- 001A- H

GG10044-047A-H LCT1188- 001A-H

GG10129-026A-H

QMPR380-165-K2

LCT1189- 001A-H

BT-56001-2

Item

Model Name

AV-21LM T3 B/G, I, D/K,M

AV-21LTR 3

AV-21LT3

AV-21LT3

AV-21LM G3

AV-21LM G3

AV-2105EE B/G, I, D/K

/AU

/-A

TV RF System

B/G, I, D/K PAL / SECAM

B/G, I, D/K,M

Co l our S yst em

[RF Mode]

PAL / SECAM

NTSC3.58 / NTSC4.43

PAL / SECAM

NTSC3.58 / NTSC4.43

PAL / SECAM

Interm ediate

Frequency

[SIF C arri er ]

32.5MHz (5.5MHz)

33.5MHz (4.5MHz)

31.5MHz (6.5MHz)

32.0MHz (6.0MHz)

32.5MHz (5.5MHz)

31.5MHz (6.5MHz)

32.0MHz (6.0MHz)

32.5MHz (5.5MHz)

33.5MHz (4.5MHz)

31.5MHz (6.5MHz)

32.0MHz (6.0MHz)

32.5MHz (5.5MHz)

31.5MHz (6.5MHz)

32.0MHz (6.0MHz)

OSD Language

E / R / A / P

E / R

E / C / M / I

E / R / A / P

E / R / U

No. 52030

7

A

V-21LMT3/AV-21LTR3

A

A

V-21LT3/AV-21LMG3
V-2105EE

SPECIFIC SERVICE INSTRUCTIONS

REMOVING THE REAR COVER

1. U np lu g t he power plu g.

$$$$

!!!!

.

and a

2. As sh own in f i gur e, remove t he 7 screws marked

screw marked "

3. W ithdr a w t he rear cover to ward you .

".

""

REMOVING THE MAIN PW BOARD

" After removing the rear cover.

1. Sl i ght l y ra is e the b ot h si de s of the M AIN PW BOAR D b y han d

an d r e mo ve t he PWB stop pe r mar ke d #
bottom.

2. W ithdr a w t he MAIN PW BOARD b ackw ar d.
(If necess ar y, ta k e off the wire c lamp, c onn ect or s etc. )

# f ro m t he c abine t

##

REMOVING THE SPEAKER

" After removing the rear cover.

1. As sh own in fi gu r e, remove the 2 scr ews marked

2. F ol low th e s ame s t eps when r em oving the oth er ha nd speak er.

CHECKIN G THE MAIN PW BOARD

1. T o ch eck the ba ck side of the PW B oar d.

1) Pu ll out the MA IN PW Bo ard. ( Ref er to RE MO VING THE MAIN
PW B oar d)

2) Er ect th e PW Boar d vert ic ally so th at you can easi l y c h eck th e
b ack side of th e PW Boar d.

[CAUTION]

"

W hen ere cti ng th e PW Boar d, be c ar ef ul s o that there w ill b e n o

con tact in g wi th other PW Board.

"

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

oth er co nne cto r ar e p r ope rly c onn ect ed.

WIRE CLAMPIN G AND CABLE T YING

1. Be sure t o cl amp th e wire.

2. N ever remo ve th e c able tie used f or ty i ng th e wi re s to ge ther.

Sh oul d i t be inad verte ntly r em ove d, be su re to ti e th e wires w it h a
new cable tie.

8

No. 52030

A

3

A

3

A

FRONT CABI.

SP EAKER

CRT SOCKET

PWB

MAIN PWB

V-21LMT3/AV-21LTR

V-21LT3/AV-21LMG

V-2105EE

D

××××

(

2)

SP EAKER

POWER

CORD

REAR

COVE R

(×××× 2)

D

PWB STOP PER

C

××××

(

1)

B

A

(×××× 7)

No. 52030

9

A

V-21LMT3/AV-21LTR3

A

A

S

U

/C

NUMBERS

U

U

V-21LT3/AV-21LMG3
V-2105EE

REPLACEMENT OF MEMORY ICs

1. MEMORY ICs

Thi s mod el u ses me mo r y I Cs. This me mo r y IC da ta are f or pr o per oper a tion of th e vide o and deflec t io n cir cuits.
When r ep la cing memory ICs , b e su r e to use ICs w r it ten w i th t he ini tial v a lu es of dat a.

2. PROCEDURE FOR REPLACIN G MEMORY ICs

(1) Power off

Switch the p ower of f and di sc o nn ect t he pow e r plu g f rom t he w al l out let.

(2) Replace ICs

Be sure to use memo ry ICs written with the init ial data values.

(3) Power on

Connect th e pow er plu g i nt o the wal l ou tl et and s w itch t he po we r on .

(4) C heck and s et SY STEM CO NSTA NT SET

・・・・ It must not adjust w ithout adjustment signals.

1) Press th e DI SPLAY key and the PICTURE MODE key of the REMOTE

CONTROL UNIT simultaneously.

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

3) W hi l e th e SE RV IC E M EN U is di splay ed , again press the DI SPLAY ke y and

PICTURE MODE ke y si m ulta neo usl y, an d t he S YSTEM CONSTA NT SE T

screen of Fig. 2 w ill b e di splayed.

4) Check the s ettin g val ue s of the S YSTE M CO N STANT SET of T able 1 If th e

val u e is diffe re nt, select the sett ing item with the MENU ▼/▲key, and set

th e co rrect valu e with t he MENU - / + k ey.

5) Press the DISPLA Y key twi c e, and r etu rn t o the n or m al sc r ee n.

(5) Receive channel of setting

Refe r to th e OPE RATI NG I NST RUCTIONS an d set th e r ece ive cha nn el s

(chan nels prese t) as descr i be d

(6) User Setting

Check t he us er s etti n g v alu e of T ab l e 2, a nd if setti ng v al ue is di f fer en t, set

th e co rrect valu e.

For setting , refer to the OPE RATI NG INSTRUCTIO NS.

(7) Setting of SERVICE MENU

Ve rif y the s et ting it ems of th e SE RVIC E M ENU, and reset w he r e n ecessa r y.

For setting , refer to the SERVICE ADJUSTMENTS.

NOTE

Alth ou gh th e k ey p osi tion of t he RM-C90 re mote control unit is diff erent fr o m

th at of t he RM-C36 4GY remot e con trol unit, th e function s of bo th units are the

sam e So pl e as e use th e attac hed d iagram for t he RM-C90 remote control

uni t fo r the R M-C36 4GY.

By t he way, MENU -/ + Key fu nction s in t he sam e ma nn er as for / key.

1.IF 2.V

3.DEF 4.VSM PRESET

5.PRESET

6.SETUP TOUR OFF

1-6 SELECT DISP : EXI T

******

****** *****

************

SYSTEM CONSTANT SE T 1

: SELECT

- / + : OPER ATE DISP : EXIT

SYSTEM CONSTANT SE T 2

ERVICE MEN

***** **

* *.****

* * * *

****

********

** ***

** ***** ***

**********

*** ** **

*** ** ** ** ***

*** ** ***** ** **

Fig.1

SY STEM C ON STA NT- ⅠⅠⅠⅠ

COL O UR :
BILIN GUAL : N O

NE R : M

T
ECO SENSOR : YES
LANG U AG E :

/

***

***

SY STEM C ON STA NT- ⅡⅡⅡⅡ

B/B SO UND :
LOCK : 180

COL OUR AU TO :
QSS : MINT

ALC : NO
TEXT R ATE : 2 0

: SEL - / + : OPE DISP : EXIT/

***

***

SY STEM C ON STA NT-

ⅢⅢⅢⅢ

10

KEY ASSIGNMENT OF REMOTE CONTROL UNIT

DI SPL A Y k ey

MENU

/ key

PICTURE

MO DE k e y

MENU

▼/▲

key

(RM-C90)

key

No. 52030

SYSTEM CONSTANT SE T 3

AMP TUNER : NO
VNR : YES

TEXT TABLE :
VOLUM PWM : POS

: SEL - / + : OPE DISP : E XIT

/

Fig.2

***

A

3

A

3

A

SE TT ING OF SY STEM C ON STANT SET

A

Setting item Setting contents

AV-

21LMT3

AV-

21LTR3

AV-

21LT3

Setting value

AV-

21LT3/AU

AV-

21LMG3

V-21LMT3/AV-21LTR

V-21LT3/AV-21LMG

V-2105EE

AV-

21LMG3/-A

AV-

2105E E

COLO UR

BIL INGUAL

TUNER

AI ECO S ENSOR

LA NG UA G E

B/B SOU ND

LO CK

COLO UR AUTO

QSS

ALC

TEXT RAT E

AMP TUNER

VNR

TEXT TABLE

VOL UM PW M

MUL TI .

TRIPLE

PA L

YE S NO

MU

MA

YE S NO

E/R/A /P

E/C/ M/I

E/R

E/R/U

ON OFF

YES 10 20

～

25 0 2 40 230 ～

YE S NO

MI NT MQ SS

YE S NO

10 20 40 80

YE S NO

YE S NO

RA CYL

POS

NEG

TRIPLE

MU L T I

NO

MU

YE S

E/R/A /P E/R E/C/ M/I E/R/A /P

OFF

18 0

NO

MI NT

NO

20

NO

YE S

ARA CYL

POS

Table 1

. . TRIPLE

E/R/U

ON OFF

YE S NO

USER SE T TING V ALU ES

Setting item Setting value Setting item Setting value

SUB POWER ON LANGUAGE ENGLISH

CHA NNEL PO SITIO N 1 PO SITIO N CHA NNEL P RE SET Refe r t o OPE RATIN G I NS TRUCT ION

VOL UME About 10 AI ECO S ENSOR OFF

TV/V IDEO

ON SCR EEN DI SPLAY

TV VNR OFF

POSITION INDICATION AUTO SHUTOFF OFF

COLO UR SYSTEM PAL ON TIMER PR1 0:00

SOUND SYSTEM B / G BLUE BACK OFF

OFF TIMER OFF OSD.Shows 00 CHILD LOCK OFF

PICTURE MODE (VSM) BRIGHT SETUP TOUR ON

Table 2

No. 52030

11

A

V-21LMT3/AV-21LTR3

A

A

)

)

V-21LT3/AV-21LMG3
V-2105EE

INITIAL SETTING VALUE OF SERVICE MENU

1. Ad ju st men t of t h e SERVIC E M EN U is made o n th e bas is o f the initial s etting va lues ; h owev er, t he new setting va lues w hi ch
set the scree n in its optim um condition may differ from the initial setting.

2. Do not change the initial Setting Values of the Setting (Adjustment) items not listed In “ADJUSTMENT”.

2. V/C

Initial set ting v al ue

Setting item

2. DRI VE

3. BR IG HT

Colour sy stem

RED

GREE N1. CUT OFF

BL UE

RED

BL UE

Variabl e

range

-128 ～+127

-128 ～+127

-127～+127

PA L SE CAM NT SC 3. 5 8 NT SC 4.4 3

0

0

0

4. CONT .

5. COLOUR -63～+63 0

TV

6. TINT

7. SECAM BL ADJ . -31～+31

8. SHARP

3. DEFLECTION

1. VER. POS ITION -04 ～ +03 -1 -3

2. HOR. POSITION

3. VER. HEIGHT

4. VE R . L INE AR ITY

5. VER. SWCURVE

6. H OR. V C O AD J UST

VI DEO

Do Not Ad j.

Setting item Variabl e range

MATSUSHITA

MURATA

TV - 5(Fixe d

VI DEO

Do Not Ad j.

-63 ～+63

-63 ～+63

-32～+31

-16 ～ +15

-64 ～ +63

-32 ～ +31

-32 ～ +31

-63 ～ +62

0

0 0

+5 0

+8 0

0

+15(Fixed

Initial set ting v al ue

fv : 50Hz MODE fv : 60Hz MODE

+3 +3

-35 +1

+15 -1

-32 +0

+0 +0

4. VS M PRESE T

12

VS M pr eset

VSM mode

Setting item

TINT SETTING VA LUE +1 5

COLOUR SE TTIN G VA LUE +15

BR IG HT SET TING VA LUE +1 5

CONT . SE TTING VA LUE +30 +15 +11

SHARP SE TTIN G VA LUE + 1 5 +1 2

BRIGHT STANDARD SOFT

No. 52030

A

3

A

3

A

5. PRESE T

The items in the following table, it is no requirem ent for adjustment.

If va lues had changed by t he miss operation, se t the initial settin g v alue s i n the f ollo wing table.

Colour Sy stem Do Not Adju st

V-21LMT3/AV-21LTR

V-21LT3/AV-21LMG

V-2105EE

Setting item

1. C TRAP FIX 1 1 1 1

2. SHARP PEAK 0 0 0 0

3. A BL 1 1 1 1

4. GAMMA 0 0 0 0

TV 0 2 2 3

5. Y. DELAY TIME

VI DEO 0 2 0 2

6. BL AC K EX P STAR T

TV 1 1 0 0

7. C-BPF

VI DEO 1 1 1 1

8. CW / SC P 0 0 0 0

9. VIF DET LEVEL 0 0 0 0

11. IF AGC MIN 0 0 0 0

12 . VIF AGC 0 0 0 0

13. VIF PM OD 0 0 0 0

19 . VN R 15 15 15 15

PA L S E CAM NT SC 3.5 8 NT SC 4.4 3

＋3 ＋3 ＋3 ＋3

Initial set ting v al ue ( Fix ed v alue)

20 . R GB LIM 1 1 1 1

21. RGB LIMIT LEVEL 2 2 2 2

23. TEXT H. POS ITION -3 -3 -3 -3

24. READ DATA

Sound System D o Not Ad j u s t

Setting item B/G I D/K M

10. SIF DET L EVEL ＋0 ＋0 ＋0 ＋0

14. SIF BP F BW ADJUST

15. SIF TRAP FO ADJUST ＋0 ＋0 ＋0 ＋0

16. SIF TRAP FO ADJUST 2 ＋0 ＋0 ＋0 ＋0

17. SIF -TRAP 0 0 0 0

18. SIF -BPF 1 0 0 0

22 . SIF SW 0 1 1 1

＋

0

＋

0

＋

0

＋

0

No. 52030

13

A

V-21LMT3/AV-21LTR3

A

A

V-21LT3/AV-21LMG3
V-2105EE

REPLACEMENT OF IC301 (IF V/C DECODER)

" For the IC 301(I F V/C DEC ODER) of this mode l, a ll data are written in the micr o-computer. So, wri te the data in the micro-

computer in accordance with the following procedures before starting adjustment.

PROCE DURES

(1) T ur n t he POW E R O F F.
(2) R ep lace t he IC 30 1 w ith a n ew o ne .

(3) W hil e pr essi ng ME NU bu tto n a nd VO L+ bu tto n ON the FRO NT CABIN E T simul t ane ous ly, turn th e POW ER O N. Wh en th e POWER is

turn ed ON, th e d at a is w ritten in the m icro-compute r immed iately.

LOCATI ONS OF FRONT PANEL BUTTONS AND LAM PS

MENU buttons

MENU buttons

1

1 2 3 4 5 6 7 8

CHANNEL ･ / ･ buttons

CHANNEL －/＋buttons

2

(ME NU ･ / ･ bu tt ons)

(ME NU －/＋butto ns)

VOLUME －/＋ buttons

VOLUME －/＋ buttons

3

(MENU －/＋ bu tto ns)

(MENU －/＋ bu tto ns)

AI ECO sensor

AI ECO sensor

4

REMOTE CONTROL sensor

REMOTE CONTROL sensor

5

ON TIMER lamp

ON TIMER lamp

6

POWER lamp

POWER lamp

7

MAIN POW ER but ton

MAIN POW ER but ton

8

14

No. 52030

A

3

A

3

A

SERVICE ADJUSTMENTS

BEFORE STARTING SERVICE ADJUSTMENT

1. There ar e 2 w ay of ad ju s ti ng t hi s T V: One i s wi t h the
REMOTE CONTROL UNI T and the other is the conventional

method using adjustment parts and components.

2. The adjustment with the REMOTE CONTROL UNIT is made
on the basis of t he initia l se tting v alue s. T he setting values

which adjust the screen to its optimum condition may differ
from t he initia l s etting values.

3. Make s ur e th at conn ect i on i s c orr ect l y ma de t o AC p ow er
source.

4. Turn on t he p ower of th e set an d eq uipm en t bef ore us e, an d
start t he adju stm en t proc edure s af ter waitin g at least 30 min utes.

5. U nless ot her w i se spec if i ed, p rep are th e mo s t suita bl e r ec epti o n
or inp ut si gn al for adj ust m ent.

6. N ev er t ouch a ny adjus tme n t part s, whi ch ar e n ot spe cif ied
in t h e li st f or thi s adjustme n t VRs , tra nsf or ms, c onde nser s,

etc.

7. Prep aratio n for ad justment
Unless oth erwis e specified in the adjustment instructions, preset

the following functions with the REMOTE CONTROL UNIT.

User mode positi on

PICTURE MODE (VSM) BRIGHT

VNR OFF

TINT / COLOUR / BRIG HT
CONT. / SHARP

BLUE BA CK OFF

OFF TIMER OFF

AI ECO S ENSOR OFF

AUTO SHUT OFF OFF

V-21LMT3/AV-21LTR

V-21LT3/AV-21LMG

V-2105EE

CENTER

MEASURING INSTRUMENT AND FIXTURES

1. DC voltmeter (or digital voltmeter)

2. Oscilloscope

3. Si gn al g en erat or (P att er n g ener at or) [ PAL / S EC AM / NT S C]

4. Remote control unit

ADJUSTMENT ITEMS

Adjustment it em Ad just ment item

B1 POW E R SUPPLY

FOCUS adjustme nt VSM P RESET setting

IF ci rc uit a djust ment

V/C (Video / Chroma) circuit adjustment

DEFLECTION c ircuit adjustment

PURITY/ CO NV ER GEN C E adj us tm ent

No. 52030

15

A

V-21LMT3/AV-21LTR3

A

A

3

V-21LT3/AV-21LMG3
V-2105EE

BASIC OPERATION OF SERVICE MENU

"

The adjustment using SERVICE MENU

The f ollowi ng adjus tme nt it ems u se t he SE RV ICE MENU in the ser i es of the adju stment . The adjustm ent s are made on the bas is of the
initial s e tting val u es. The ad ju stm ent valu es whic h ad ju st t he scr een to th e o ptim um co ndit io n c an be diffe rent from the i n iti a l sett in g values.

With th e SER VICE ME NU, various s ett in gs c an be made , a nd the y are broa dl y c l ass ifi e d i n the f ollowin g ite ms of s etti n gs.

1.I F ････････････････････ ･･･ Adjustmen t of th e IF ci rcuits.

2.V /C ･･････････････････････ Ad ju stmen t of th e VID EO /CH RO MA circui t.

3.DEF ････････････････････ ･ Adjustm ent of the DEFL ECTION circ uit.

4.V SM PRES ET ･･･････ ･････ Ad ju stmen t of th e init ia l sett in g va lue s of VSM cond it i on as STA NDARD, SOF T a nd BR IGHT.

(VSM : Video Status Memory)

5.PRESET

6.SETUP TOUR OFF ････････ It s hou l d be abl e to s elect mode (LANGU AG E a nd AU TO CH PRESE T).

"

Key operation of the SERVICE MENU

[Enter to SERVICE MENU]

Press the DI SPLAY key and the PICTURE MODE key of the REMOTE CONTROL

UNIT s imult an eou sly. Th en enter the S ERVICE ME N U mod e as sh own in Fig.1 .

[Exit from SERVICE MENU]

When complete th e ad just ment w or k, press th e DI SPLAY key to r eturn t o th e

SERV ICE MENU.
An d th en pr es s the DISPLA Y ke y ag ain, retur n to the n or m al sc r een .

[ Se lec t fr o m SE RV IC E ME NU ]

In SER VI CE M ENU, pr ess t he n umber ( 1 ～6) ke y of th e r emo te c ont ro l un it , to select

an y of th e ad j ustm en t ite ms.

The colours w hi ch se le cte d i te m ch aract ers are ch ang ed.

･･･････ ･･････････

Adjustment of the RF circ uit [Do not adjust].

[Shou ld be O FF].

SE RVICE M EN U

1.IF 2.V/C
.DEF 4.VSM PRESET

5.PRESET

6.SETUP TOUR OFF

1-6 SELECT DISP : EXI T

******

****** *****

***** **

************

* *.****

**********

* * * *

*** ** **

*** ** **** ***

*** ** ***** ** **

** ***

** ***** ***

Fig.1

****

********

KEY ASSIGNMENT OF REMOTE CONTROL UNIT

DI SPL A Y k ey

MENU

/ k ey

PICTURE

MO DE k e y

MENU

key

▼/▲

NUMBERS

key

(RM-C90)

KEY ASSIGNMENT OF REMOTE CONTROL UNIT

DI SPL A Y k ey

MENU

－/＋key

PICTURE

MO DE k e y

NUMBERS

key

MENU

▼/▲ key

(RM-C364GY)

16

No. 52030

A

3

A

3

A

[Method of setting]

1. IF

[1. VCO]

① 1 Key ･･･････ ･････････････ ･････ Select 1.IF.
② 1 Key ･･･････ ･････････････ ･････ Select 1.VCO
③ The VCO (CW) screen will be displayed a allow mark when the AFC voltage is at a certain level.
④ DISPLA Y Key･･･････ ･･･････････ As you press this key twice, you will return to the SER VIC E ME NU.

[2. DELA Y P OINT]

① 1 K ey･･･････ ･････････････ ･････ Select 1.IF.
② 2 K ey･･･････ ･････････････ ･････ Select 2.DELAY P OINT.
③ ME NU - /+ K ey ･･･････ ･･････････ Set (ad just) th e se tting valu es o f th e settin g it ems.
④ DISP LAY Key･･･････ ･･･････････ W hen th is is pr esse d twice, you will r et urn t o the SE RV ICE MENU .

2.V /C, 3.DEF and 4 .VSM PR ES ET

① 2~4Key ･･･････ ･････････････ ･･･ Select one from 2. V/C , 3. DEF an d 4. VSM PRE SET.
② MENU ▼/ ▲ Key ･･････････････ Select setting items.
③ MENU -/+ Key ･･･････ ･･････････ Adj u st th e va lues of t he i tem s.
④ DISPLA Y Key ･･･････ ･･･････････ W hen this is pr esse d, re turn t o t he SE RVICE M EN U.

V-21LMT3/AV-21LTR

V-21LT3/AV-21LMG

V-2105EE

6.SETUP TOUR

① B y pressing th e 6 key, you can ch ange t he ON or OF F ( should be OFF).

(Should be OFF)

%･

The JVC’s logo will be shown about 15 seconds automatically.

② MENU -/+ Key ･･･････ ･･････････ Select Language.
③ MENU ▼ Key･･･････ ･･････････ Au to Se arch.

If it is ON, th en you tu rn the TV power off, w h en you are t ur n t he TV p ower o n a gain .

No. 52030

17

A

V-21LMT3/AV-21LTR3

A

A

S

U

6.SETU

JUS

6.SETU

ON /

50

(R)

50

O

V-21LT3/AV-21LMG3
V-2105EE

SERVICE MENU FLOW CHART

SE RVICE M EN U

ERVICE MEN

1.IF 2.V/C

3.DEF 4.VSM PRESET

5.PRESET
P TOUR OFF

1-6 SELECT DISP : EXI T

******

****** *****

***** **

* *.****

************

**********

*** ** **

*** ** **** ***

*** ** ***** ** **

P TOUR

* * * *

****

********

** ***

** ***** ***

FF

(By pr essi ng 6- ke y)

OFF

SU B ME NU 1. I F

IF

1. VCO

2. DELAY POI NT

1-2 : SELECT DISP : E XIT

SU B ME NU 2. V /C

V/C PAL

1. CUTOFF
(G)

(B)

50Hz

/ :SELECT

- / + : OPERATE DISP : EXIT

* **
* **

* **

VCO (CW)

TOO HIGH
ABOV E REFERENCE
JUST REF ERE NCE

BELOW REF ERE NCE
TOO LOW

AFT AD
VCO ADJUST
FINE

AGC TAKE- OVER

- / + : OPERATE DISP : EXIT

***.**

T

DELAY POINT UHF

MH z

** *(* *)

** *(* *)

** *(* *)** *(* *)
** *(* *)

** *(* *)

** *(* *)** *(* *)

DISP : EXIT

**

SU B ME NU 3. D EF

DEF

1. VER. POSITION

/ :SELECT

- / + : OPERATE DISP : EXIT

PAL

**

Hz

SUB ME NU 4. V SM PR ES ET

BRI GHT

TINT
COLO UR
BRI GHT

CONT.
SHARP

/ :SELECT

- / + : OPERATE DISP : EXIT

**
**

**
**

**

SUB ME NU 5. P RE SET

18

PRESET

PAL

1. C-TRAP FI X

Hz

/ :SELECT

- / + : OPERATE DISP : EXIT

B/K

*

No. 52030

A

3

A

3

A

ADJUSTMENT LOCATIONS

V-21LMT3/AV-21LTR

V-21LT3/AV-21LMG

V-2105EE

TOP

MAIN PWB

F901

CRT SOCKET PWB

TP-47R /G

TP-47G /R

T

IC701

(SOLDER SIDE)

U

TP-47B

TP-E

E1

CRT EARTH WIRE
(BRAIDED ASS'Y)

FRONT

IC702

MEMORY IC

DEG

PW

IC821

S

[Only for AV-2 1LMT3 / AV-2 1LTR3]

IC301

TU00 1

T

1

S

1Pin TP-91(B1)
2Pin NC

HV

U

HVT

UPPER:FOCUS
LOWER:SCREEN

3Pin X-ray2
4Pin X-ray1

5Pin TP-E( )

No. 52030

19

A

V-21LMT3/AV-21LTR3

A

A

)

adjust

V-21LT3/AV-21LMG3
V-2105EE

ADJUSTMENTS

B1 POW ER SUPPLY

Item

Check of
B1 Powe r

Measuring

instrume nt

Signal
gener ator

Supply

DC Vo lt ­meter

FOCU S ADJUSTMENT

Item

Ad j ust men t
of FOCUS

Measuring

instrume nt

Signal
gener ator

IF CIRCUIT ADJUS TMENT

Item

Measuring

instrume nt

Test point Ad justment part Description

TP-91 ( B1)

####

TP-E (

)

1. Inp ut a wh ole black sig na l.

2. Connect a DC volt meter to TP-91(B1) and TP-E (#).

3. M ake sure t hat the vol t age i s DC1 16.5±2.0 V.

Test point Ad justment part Description

FOCUS VR

[In HV T]

1. Input a cross-hatch signal.

2. W hil e watch ing the scr e en, adjust the FOCUS VR to make the

ver ti cal and ho rizo ntal l in es as f in e a nd sharp as possi b l e.

3. M ake sure t hat whe n the s creen is d arkened, the l i nes rem ain in

g ood focu s.

Test point Ad justment part Description

Ad j ust men t
of VCO(CW

Signal
gener ator

Remote
control unit

VCO (CW)

TOO HIGH
AB OVE REFEREN CE

JU ST REF ER ENCE
BEL OW R EFERE N CE
TOO LOW

AFT AD JUST
VCO ADJUST
FINE

DISP : EXIT

ADJUSTMENT AT THIS POINT IS USELESS

***.**

MHz

** *(* *)

** *(* *)

** *(* *)** *(* *)
** *(* *)

** *(* *)

** *(* *)** *(* *)

ADJUSTMENT POINT

1. VC O

YE LLOW

Do not

TOO HIGH

ABOVE REFERENCE

J US T R E FE RE NC E

B ELO W RE F E RE NC E

TOO LOW

●Please use signal generator which is correct proof about the

sen ding fr eque nc y.

1. Inp ut th e PA L f ull col o ur b ar (2 10 .2 5MHz) s ig nal .

2. En ter th e SER VICE ME NU.

3. Se lect 1.IF f rom the SERV ICE MENU.

4. Press 1 key and s elect 1.VCO.

5. Select VCO ADJUST with MENU ▲/▼ key.

6. Press MENU -/+ key until the colour of the characters TO O
HIGH ch an ges b lue to yellow . Th en gr ad ually pr ess th e MENU

-/+ key u ntil the TOO LOW ch ang es yellow . At thi s t ime, conf ir m
th at t he val u e of VCO ADJUST is n ear + 00 .

7. Select AFT ADJUS T with MENU ▲/▼ key.

8. Press MENU -/ + key until the characters JUST REFERENCE
ch ang es bl ue to y ellow.

9. Press the DI SPLAY key three times to return to normal screen.

20

No. 52030

A

V-21LMT3/AV-21LTR

3

A

3

A

(

)

V-21LT3/AV-21LMG

V-2105EE

Item

Ad j ust men t

of DELAY

POI NT

(AGC)

Measuring

instrume nt

Signal
gener ator

Remote
control unit

DELAY POINT UHF

AGC TA KE-OVER

- / + : OPERATE DISP : EXIT

Test point Ad justment part Description

**

DELAY P OINT

(AG C TAKE-O VER)

1. Inp ut a bl ac k an d wh it e sign al (col o ur of f).

2. En ter th e SER VICE ME NU.

3. Select 1. IF f rom t he SERVI C E M EN U.

4. Select 2 . DELAY P OINT b y pr essi n g the 2 key on the remote

control unit.

5. Se t th e in it i al sett i ng v alue s of th e se tting item s as sh own b ellow

tabl e.

6. Then adjust the MENU - or + key until video noise disappears.

7. T ur n to oth er ch an nel s and m ake sure th at the r e ar e n o

irregularities.

Setting It e m Va riabl e range Initial set ting v alue

DELAY P OINT

(AGC TAKE OVER)

NT SC 3.5 8

OTHER

0～127

ALPS

QAU0282-001

47

35

No. 52030

21

A

V-21LMT3/AV-21LTR3

A

A

(B)

V-21LT3/AV-21LMG3
V-2105EE

VIDEO / C HROM A CIRCUIT ADJUSTMENT

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

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

Do not c hang e the initial setting v alue s of the sett ing items not liste d in “A DJUSTMENT”.

Item

Ad j ust men t

of WHITE

BALANCE

(Low light)

Measuring

instrume nt

Test point Ad justment part Description

Signal
gener ator

Remote
control unit

V/C PAL

1. C UTO FF

50Hz

/ :SELECT

- / + : OPERATE DISP : EXIT

(R)
(G)

(B)

* **

* **

* **

KEY ASSIGNMENT OF REMOTE CONTROL UNIT

CU TO FF O F F

(H.LINE OFF)

CU TO FF O N

(H.LINE ON)

R. CUTOFF( )

R. CUTOFF( )

▲
▲

R. DRI VE( )

▼

R. DRI VE( )

▼

123

4

7

56

8

9

RGB

1. CUT OFF (R)

CUT OFF (G)

CUT OFF (B)

SCREEN VR
[IN HVT]

G .C UTOFF ( )

B. C UTOF F( )

B. D RIV E( )

B. C UTOF F( )

B. D RIV E( )

G .C UTOFF ( )

▲
▲

▲

▲

▲

▲

1. Inp ut a bl ac k an d wh it e sign al (col o ur of f).

2. En ter th e SER VICE ME NU.

3. S elect 2. V/C from the SERVICE MENU, then selec t 1 . CUT OFF

(R), (G) and (B) .

4. Set each value to initial setting value with 4～9 keys of the

remote control unit.

5. Press the 1 key of th e remote contr ol un i t to sh ow th e s ingle

horizontal line on screen.

6. T ur n t he SCREEN VR fully counter-clockwise, then slowly turn it

cl ockw is e to where on e of a red , bl u e or gr e en c o l our is f aint l y

vis ible.

7. Use keys 4～9 of th e r em ote c ontrol unit an d ad ju st the oth er 2

col o ur s which e x cept th e ap pea r ed col o ur to whe r e th e s in gl e

h oriz o nt al l in e app ea rs whit e.

8. Turn the SCREE N VR to where t he s in gle h or iz ont al line glows

fain tly.

9. Press the 2 key to turn of f th e single horizontal line.

10. Press the DISPL AY key t wi ce to r eturn to th e normal screen.

Adjustment it em

R

G

Variabl e

range

-128 ～+127

-128 ～+127

Initial set ting

value

0

01. CUT OFF

B -128～+127 0

Ad j ust men t

of WHITE

BALANCE

(Hi gh light)

Signal
gener ator

Remote
control unit

2. DRI VE (R

DRI VE ( B)

)

1. Inp ut a bl ac k an d wh it e sign al (col o ur of f).

2. En ter th e SER VICE ME NU.

3. S elect 2. V/C from the SERVICE MENU.

4. Select 2. DRIVE (R) / (B) with MENU ▼/▲ key, and set each

val u e to ini tial setti ng val u e with 4 and 7 or 6 an d 9 k eys of th e

remote control unit.

5. Use the keys 4 and 7 or 6 and 9 t o p ro duc e a white sc r een

V/C PAL

* **

2. D RIV E

50Hz

/ :SELECT

- / + : OPERATE DISP : EXIT

(R)

* **

22

6. Press the DISPLAY key t wice to r etu rn to th e n omal scr een.

Adjustment it em

Variabl e

range

R - 128～+127 +0

2. DRIVE

B

-128 ～+127

No. 52030

Initial set ting

value

+0

A

V-21LMT3/AV-21LTR

3

A

3

A

V-21LT3/AV-21LMG

V-2105EE

Item

Ad j ust men t

of

SUB BRIGHT

Ad j ust men t

of

SUB CONT.

Ad j ust men t

of

SUB
COLOUR ⅠⅠⅠⅠ

Measuring

instrume nt

Remote
control unit

Remote
control unit

Remote
control unit

Test point Ad justment part Description

3. BR IG HT 1. R eceiv e an y broadc ast.

2. En ter th e SER VICE ME NU.

3. Select 2. V/C f rom S ERVIC E MENU.

4. Select 3. BRI GHT with the MENU ▼/▲key.

5. Set the initial sett ing value wit h the MENU - / + key.

6. If the brightness is not the best with the initial set value, make

fine adjustment until you get the best brightness.

4. CONT . 1. Rec ei ve any br o adc ast.

2. En ter th e SER VICE ME NU.

3. Select 2. V/C f rom S ERVIC E MENU.

4. Select 4. CONT. with the MENU ▼/▲key.

5. Set the initial sett ing value wit h the MENU - / + key.

6. If the co ntrast is not t he best with the initial s et value, mak e f ine

adjustment until you get the best contrast.

5. COLOUR [Method of adjustment without m easuring instrument]

PAL COLOUR

1. R eceiv e a PAL broadc ast.

2. En ter th e SER VICE ME NU.

3. Select 2. V/C f rom t he SERVI CE M EN U.

4. Select 5. COLOUR with the MENU ▼ /▲ key.

5. Se t th e initi a l setting value for PAL COLOUR with the MENU

- / + key.

6. If t he c o l our i s not th e be st with th e i n iti a l s et valu e, m ak e fin e

adjustment until you get the best colour.

SECAM COLOUR

NTSC 3.58 COLOUR

NTSC 4.43 COLOUR

1. R eceiv e a SECAM b roadc ast.

2. M ake fi ne adju stmen t of SE CA M CO LOU R as previ ou sly .

1. R eceiv e a NTS C 3.5 8M H z broa dca st.

2. M ake si m ilar fin e ad ju stm ent of NTSC 3.58 CO LOU R as

previ ously .

When NTSC 3.58 adjustment completed, NTSC 4.43 will be

automatically set at t he resp ective values.

No. 52030

23

A

V-21LMT3/AV-21LTR3

A

A

))

))

g

V-21LT3/AV-21LMG3
V-2105EE

Item

Ad j ust men t

of SUB

COLOUR

ⅡⅡⅡⅡ

W

Measuring

instrume nt

Signal
gener ator

Oscillo­sc ope

Remote
control unit

Y

Cy

Test point Ad justment part Description

TP-47G/R

TP-E (####)

[CRT S OCKET
PWB]

M

5. COLOUR [Method of adjustment using measur ing instrument]

R

(A)

PAL COLOUR

B

(－)

0V

(＋)

1. Inp ut a PA L full fiel d colou r bar signal (7 5% w h it e) .

2. En ter th e SER VICE ME NU.

3. Select 2. V/C f rom S ERVIC E MENU.

4. Select 5. COLOUR with the MENU ▼/ ▲ key.

5. Set the initial sett ing value of PAL COLOUR with the MENU

- / + key.

6. C on nec t the os c illosc ope be tw ee n TP -4 7G /R a nd TP- E (#).

7. Ad jus t PAL COL OU R to br i ng the val u e of (A) in the illustratio n

to + 12V (W - G) . (Vol t age v alu e b et ween (W) and ( G))

G

SECAM CO LOUR

1. Input a SECAM full field colour bar signal (75% white).

2. Set the initial setting value of SECAM COLOUR with the MENU

- / + key.

3. Ad jus t SE CAM CO LOU R to b rin g th e valu e of

illu str ati on to + 10V(W-G). (Voltage value between (W) a nd (G

(A)

in the

NTSC 3.58 COLOUR

NTSC 4.43 COLOUR

24

1. Inp ut a N TSC 3. 58 full fi e ld colo ur b ar si gn al ( 75 % whi te).

2. Set the initial setting value of NTSC 3.58 COLOUR with the

MENU - / + key.

3. Ad jus t N TSC 3.5 8 C OL OUR to br ing t he val u e of (A) in th e

illu str ati on to + 10V(W-G). (Voltage value between (W) a nd (G

When N TSC 3.5 8 i s set, NT SC 4. 43 will be automatica lly se t at t he

resp ec ti ve val ues .

No. 52030

A

V-21LMT3/AV-21LTR

3

A

3

A

y

g

(B)

V-21LT3/AV-21LMG

V-2105EE

Item

Ad j ust men t
of TINTⅠⅠⅠⅠ

Ad j ust men t
of TINTⅡⅡⅡⅡ

Measuring

instrume nt

Signal
gener ator

Remote
control unit

Signal
gener ator

Oscillo­sc ope

Remote
control unit

Test point Ad justment part Description

6. TINT [Method of adjustm ent without m easuring instrument]

TP-47G/R
TP-E (####)

[CRT
SOCKET
PWB]

NTSC 3.58 TINT

NTSC 4.43 TINT

6. TINT [Method of adjustm ent using measur ing instrument]

NTSC 3.58 TINT

1. Inp ut a N TSC 3. 58 full fi e ld colo ur b ar signal (75% w hi te) .

2. En ter th e SER VICE ME NU.

3. Select 2. V/C f rom S ERVIC E MENU.

4. Select 6. TINT wi th t he MENU ▼/▲ key.

5. Set the initial setting value of NTSC 3. 58 wit h the MENU - / +

key.

6. If you c a nn ot get th e best tin t wi th the in iti al s ettin g va lue, ma ke

fine adjustment until you get the best tint.

When N TSC 3.5 8 i s set, NT SC 4. 43 will be automatica lly se t at t he

resp ec ti ve val ues .

1. Inp ut a NTS C 3.5 8 f ul l fi el d colo ur b ar signa l (75% white) .

2. En ter th e SER VICE ME NU.

3. Select 2. V/C f rom S ERVIC E MENU.

4. Select 6. TINT wi th t he MENU ▼/▲ key.

5. Set the initial setting value of NTSC 3. 58 wit h the MENU - / +
key.

6. C on nec t the os c illosc ope be tw ee n TP -4 7G /R a nd TP-E. (#).

7. Adjust NTSC 3.58 TINT to bring the value of (B ) in the

illu stration +9V(W- Cy). ( Vol ta ge v al ue be twee n ( W) an d ( Cy))

W

B

R

M

(－)

0V

Y

C

G

(＋)

NTSC 4.43 TINT

When N TSC 3.5 8 i s set, NT SC 4. 43 will be automatica lly se t at t he

resp ec ti ve val ues .

No. 52030

25

A

V-21LMT3/AV-21LTR3

A

A

V-21LT3/AV-21LMG3
V-2105EE

Item

of SECAM
BL AC K

OFF SET

KEY ASSIGNMENT OF REMOTE CONTROL UNIT

COLOUR

ON

COLOUR

OFF

Measuring

instrume nt

Remote
control unit

Signal
gener ator

12 3

Test point Ad justment part Description

7.SECAM

BL ADJUST

[Method of adjustment using measur ing instrument]Ad j ust men t

1. Inp ut a SE CAM fu ll f ield c olour b ar sign al.

2. En ter th e SER VICE ME NU.

3. Select 2. V/C f rom S ERVIC E MENU.

4. Select 7. SECAM BL ADJUST with MENU ▼/▲ key.

5. Set the initial sett ing value wit h the MENU - / + key.

6. Switch the ①ke y (c ol ou r OF F ) an d ②key (c ol ou r ON ) on the

remote contr ol an d ma ke sur e th at th ere i s no colo ur on th e

blac k an d w h it e scr ee n.

7. If t he black an d w hi t e s creen is no t b est with th e ini t ial sett ing

value, make fine adjustment u ntil you get t he best black and

white screen .

8. W hi l e w atch ing th e s cr e en, adj us t th e val u e t o be th e s am e

col o ur b etwee n O N & OFF b y t en key on t he r em ote c ontr o l

un it.

9. Press the DISPLAY key t wice to r etu rn to th e n ormal screen.

4

7

56

8

9

26

No. 52030

A

V-21LMT3/AV-21LTR

3

A

3

A

V-21LT3/AV-21LMG

DEFLECTION CIRCUIT ADJUSTMENT

"

The re ar e 2 m od es of adju stm ent (s etting va lue) - ----- ① 50 Hz m od e and ② 6 0Hz m od e ----- de pe ndi n g upo n th e kind of s igna ls

(ver tic al freq uenc y 5 0Hz / 60Hz) .

"

When ad j uste d i n mod e ① , mo de ② will be automatically set.

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

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

V-2105EE

Item

Ad j ust men t

of V.HEIG HT

&

V. POSIT I ON

Screen

size

92%

Measuring

instrume nt

Test point Ad justment part Description

Signal
gener ator

Remote
control unit

SU B ME NU 3. D EF

DEF

1. VER. POSITION

50Hz

/ :SELECT

- / + : OPERATE DISP : EXIT

Scre en size

1. VE R. POSITION

3. VE R. HE IG HT

PAL

***

Picture
size
10 0%

1. Inp ut a circle p att ern signal.

2. En ter th e SER VICE ME NU.

3. Select 3. DEF. from SERVICE MENU.

4. Select 1. VER. POS ITION with the MENU ▼/▲ key.

5. Set the initial sett ing value wit h the MENU - / + key.

6. Adjust V and V’ to be equal with the MENU - / + key as sh own in

Fig.2.

7. Inp ut a cr os s -hatc h s ign al.

8. Select 3. V. HEIG HT with the MENU ▼/▲ key.

9. Set the initial sett ing value wit h the MENU - / + key.

10. As shown in Fig.1, adjust VE R. HE IGH T and m ak e th e verti cal
screen size 92% of the pi ctu r e siz e with t he MEN U - / + keys of

remote control unit.

Ad j ust men t

of HOR .

POSITION

Pic ture size 1 00%

Fig.1

Signal

2.HOR. POSIT ION 11 . Input a circle pattern signal.

gener ator

Remote

control unit

HH"

V

V'

Fig.2

No. 52030

12. Sele ct 2. HOR POSITION with the MENU ▼/▲ key.

13 . Se t th e initi a l sett i ng value of 2. HOR. POSITION wit h the

MENU - / + key.

14. Adju st 2. HOR. POSITION to make H= H" as sh ow n in Fi g. 2

with the MEN U - / + ke y.

27

A

V-21LMT3/AV-21LTR3

A

A

V-21LT3/AV-21LMG3
V-2105EE

Item

Ad j ust men t

of VER. LI N.

& VER .

SCURVE

Measuring
instrume nt

Signal
gener ator

Remote
control unit

Fig .3

Test point Ad justment part Description

4. VER. L IN.

5. VER. S CU RVE

TOP

CEN TER

BOTTOM

●●●● Whe n the v ert ic al linearit y ha s b ee n det e rio rat ed

remark ably, perform the followi ng steps .

15 . Input a cross -hatch sign al.

16. Sele ct 4 . VER. LIN. with the MENU ▼/▲ key.

17. Set the initial s etting value of 4. VER LIN. with the MENU - / +

key.

18. Sele ct 5 . VER. SC URVE with th e MENU ▼/▲ key.

19. Set th e init ial setting value of 5. VER . SCURV E wi t h t h e ME NU

- / + key.

20. Adju st 4. VER. LIN. an d 5. VER. SCURVE so t hat th e sp aces

of each lin e as sh own i n Fi g. 3 on TOP, CENTER and

BOTTOM become uniform.

Make su r e th at th e a djus t ment is pr o per l y do ne on t he sc r e en of

60 Hz mode .

[NOTE]

"

Adjust to make both 50Hz & 60Hz are the same v. size and

fine straight lin e.

"

When ad j ust aga in, adju st 5 0H z m ode fi r s t.

"

When adjust in 60Hz mode, only 60Hz mode is adjust.

VSM PRESET SETTING

Item

Setting of

VS M

PRES ET

Measuring

instrume nt

Remote

control unit

TINT
COLO UR
BRI GHT

CONT.
SHARP

/ :SELECT

- / + : OPERATE DISP : EXIT

Test point Ad justment part Description

TINT

COLOUR

BR IG HT

CONT .

SHARP

1. En ter th e SER VICE ME NU.

2. Select 4. VS M PRESE T from the SERVICE MENU.

3. Se lect BRIG HT with th e P ICTURE MODE ke y.

4. Ad jus t t he M EN U ▼/▲ an d M ENU - / + ke y to b r ing the s et

val u es of TI NT

tabl e.

5. R esp ectively select th e VSM PR ES ET mod e f or SOFT an d

STANDARD, and make similar adjustment as in 3 above.

～～～～

SHARP to the values shown in the below

•••• VS M PRESET

BRI GHT

**
**

**
**

**

VS M
Setti ng It em

TINT +15

COLO UR +15

BRIGHT +15

CONT +30 +15 +13

SHAR P +15

BRIGHT STA NDARD SOFT

←

←

←←
←←

←

+12

28

No. 52030

A

3

A

3

A

PURITY / CONVERGENCE ADJUSTMENT

ug

PURITY ADJUST MENT

V-21LMT3 / AV-21LTR

V-21LT3 / AV-21LMG

V-2105EE

1. D em ag netiz e CRT w it h t he demagn eti zer.

2. L oose n th e re tain er scr ew of the d efl ec tion yoke .

3. Remove th e wed ge s.

4. Inp ut a g r een rast er sign al from the sign al generat or , and tur n

th e scr e en to g r een r aste r.

5. Move the deflection yoke backward.

6. Br i ng t he lo ng l ug of th e p ur i ty m agn ets on the sho rt lu g a nd
p osit ion t hem hor i zon tal ly. (Fi g. 2)

7. Adjust t he ga p be tween two l ug s so that the G REEN R AS TER
will come into the center of the screen. (Fig.3)

8. M ove the d eflec t i on y oke forward, and fi x th e pos itio n of th e
deflection yoke so that the whole screen will bec ome green.

9. Ins ert the we dge t o th e t op side of the def lec t io n yoke s o th at it
will n ot move.

CRT

WEDGE

PU R IT Y MAG NE T (P )

DEFL ECTION YOKE

46

P / C MA GNET S

CRT SOCKET PWB

# P/C MAGN ETS

P : PURITY M AGN E T
4 : 4 P OLES ( con vergence m agn ets)

6 : 6 P OLES ( con vergence m agn ets)

Fig.1

PURITY MAGNETS

10 . Inp ut a cross hat c h si g nal.

11 . Ve rif y that th e scr e en is horiz on tal.

12 . Inp ut r ed and b lue r as t er sign als, and make s u r e tha t pur i ty is

prop er ly ad juste d.

Shor t l ug

Long l

Bring t he long lug over th e short lug
and position them horizontally.

Fig.2

(FRONT VIEW)

CENTER

Fig.3

GREEN RASTER

No. 52030

29

A

V-21LMT3 / AV-21LTR 3

A

A

(

)

(

)

G

G

(

)

V-21LT3 / AV-21LMG3
V-2105EE

STAT IC CONVERGENCE ADJUST MENT

1. Inp ut a cross hat ch si g na l.

2. U sing 4 -po le con ver ge nc e m agn ets , ove rla p t he r e d a nd blu e
lines in th e c en ter of th e scr een ( F i g. 1) and tu rn the m to

mag ent a (r ed/ blue ).

3. U s ing 6-p ole con ver ge nc e ma gn ets, ove r la p the mage nta

(red/b l ue) an d gr ee n li nes in t he c ent er of the sc r een an d tu rn
them to white.

4. R ep eat 2 and 3 ab ove, an d ma ke b est c onve r ge nce.

Af ter ad justment, f ix th e w ed ge at the origin al p osition.
Fas t en the reta in er scr ew of the d ef lection yoke .

Fi x the 6 magn ets with g lu e.

FRON T V I EW

Fig.1

DYNAMIC (p eriphery) CONVERGENCE
ADJUS TMENT

After adjusting purity & static convergence.

*

1. M ove th e def lec ti on y ok e u p an d d ow n and ov er lap th e lin es in
the periphery. (Fig .2)

2. M ove th e def lection yoke left to ri gh t and over l ap t he lines i n the
p eri p her y. (F i g. 3)

3. R ep eat th e st eps 1 a nd 2 and obtain a n o pti m um co nverg enc e.

Af ter ad justment, f ix th e w ed ge at the origin al p osition.
Fas t en the reta in er scr ew of the d ef lection yoke .

Fi x the 6 magn ets with g lu e.

FRONT VIEW

BLUE

GREEN

RED

FRON T V I EW

GRE EN

RED

BLU E

RED

REENYHBLUE

REENBLUE

YH

Fig.2

RED

BLU E

GRE EN

RED

RED

GREEN

BLUE

RED
GRE EN
BLU E

Yv

Yv

BLUE
GRE EN
RED

Fig.3

30

No. 52030

A

3

A

3

A

REPLACEMENT OF CHIP COMPONENT

!

CAUT IONS

1. Avoid heating for more than 3 seconds.

2. D o n ot ru b the elect rodes an d t he resi st p ar ts of the p att er n.

3. W hen r em oving a c hip par t, m el t th e s ol der ad equate ly.

4. D o n ot r euse a ch ip p ar t afte r re mo ving it .

! SOLDERING IRON

1. U se a hi g h i ns ulati o n soldering ir on with a t hin poin ted end of it.

2. A 30 w s oldering iron is r ec omm ended for easil y removi ng p arts .

! REPLACEMENT STEPS

1. How to remove Chip parts

$$$$ Resi st o rs, capacitors , et c

(1) As sh own in t he f igure, pu s h th e pa rt with tw ee zers and

alte rn at ely m elt th e sol de r at each en d.

(2) Sh if t w i th tweez e rs and r emo ve th e ch i p p ar t.

$$$$ Trans ist o rs, dio d es , va ria bl e r esistor s, etc

(1) Ap pl y e xt ra so ld er to each lead .

SOLDE R SOLD ER

V-21LMT3/AV-21LTR

V-21LT3/AV-21LMG

V-2105EE

2. How to install Chip parts

$$$$

Resi st ors, ca pa cit o rs , etc

(1) Ap ply sold er to the patt ern as indicated in the figure.

(2) Gr asp t he c h i p p art with twee zers and pl ac e it on th e s old er.

The n hea t and me lt th e so lder a t b oth ends of t he chip part.

$$$$ Trans ist o rs, dio d es , va ria bl e r esistor s, etc

(1) Ap ply sold er to the patt ern as indicated in the figure.
(2) Gr asp th e ch ip p art wit h t we ezers an d pl ace it on the s o l der .

(3) First solder lead A as indicated i n t he figu re.

A

(2) As sh own in t he f igure, pu s h th e pa rt with tw ee zers and

alte rn at ely m elt th e sol d er at eac h le ad . S hift an d remov e the
chip part.

(4) The n so lder leads B and C.

Note : A fte r re moving t he part , remove r emaining solder fr o m the

pattern.

C

A

C

No.52030

B

B

31

A

V-21LMT3/AV-21LTR3

A

A

V-21LT3/AV-21LMG3
V-2105EE

32

No.52030