JVC AV-21F3 Schematic

3

B

SERVICE MANUAL

COLOUR TELEVISION

AV-21F3

AV-21FR

AV-21FMG3

BASIC CHASSIS

AV-21F3

AV-21FR3

AV-21FMG3B

[ RM -C9 0 ]

[ RM-C3 64GY]

[RM-C 364]

CG

CONTENTS

! SPECIFICATIONS ････････････････････････････････
! SAFE TY PRECAUT IONS ････････････････････････････････
!

FEATURES････････････････････････････････

! FUNCTIONS ････････････････････････････････
!

MAIN DIFFERENCE LIST

!

SPECIFIC SERVICE INSTRUCTIONS

! SERVICE ADJUSTMENTS ････････････････････････････････
!

PARTS LIST

★

OPERATING INSTRUCTIONS

★

STAND ARD CIRCUIT DIAGRAM

1

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

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

COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD.

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･････････････････････ 15

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33

2-1

7
8

No. 52024

Jun. 2002

A

V-21F3

A

A

V-21FR3
V-21FMG3B

SPECIFICATIONS

ITEM

Dimen sions( W×H×D) 619mm×458mm×486.5mm

Mass 22kg

TV RF Syst em B/ G, I, D/K B/ G, I, D/K, M

Colour System

Telet ext System FLOP (Only for AV-21FR3) ×

Pi ctur e Tube

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

Receiving Frequency VHF (VL) 46.25MHz～168.25MHz

Intermediate
Frequen cy

Col ou r S ub C arr ier Fr e q uen cy

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

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

Visible size: 51cm measured diagonally

VHF (VH) 175.25MHz～463.25MHz

UHF 471.25MHz～863.25MHz

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

CATV

VIF Carrier 38.0MHz

SIF Carrier

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

32.5MHz (5.5MHz)

31.5MHz (6.5MHz)

32.0MHz

PAL (4.43MHz),
SECAM (4.40625MHz / 4.25MHz)

NTSC (3.58MHz / 4.43MHz)

AV - 21 F3

AV - 21 FR3

(6.0MHz)

CONTENTS

AV-21FMG3B

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

31.5MHz (6.5MHz)

32.0MHz

(6.0MHz)

Power Input Rated Voltage

Power Co nsumpti on

Speaker

Audio Output

Aer ial In pu t Termi n al

Input

Output Video 1V(p-p), 75

Headphone jack 3.5mm mini jack

Remote Control Unit

Video 1V(p-p), 75Ω (Front / Rear )

Audio

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

AC110～240V, 50 / 6 0Hz

90W (Max) / 60W(Avg)

6cm×12 cm, Oval type×2

3W (monaural )

75Ω Unbalanced

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

Ω

[AV-21F3]
: RM-C364G Y
[AV-21FR3]
: RM-C90

(Batter y size : AA / R06 / UM- 3×2)

Design and specifications are subject to change without notice.

RM-C3 64
(Batter y size : AA / R06 / UM- 3×2)

2

No. 52024

A

3

A

A

SAFETY PRECAUTIONS

V-21F

V-21FR3

V-21FMG3B

1. The d es ign of th is prod uct c on ta ins sp eci al har d wa re , many
circuit s and components specially for safety purp oses. For
con tinu ed pr ot ection , n o c han g es sh ou ld b e ma de to the o ri g i nal
d esi gn un less auth or ized in w riti n g by th e ma nu fact urer.

Replacem en t par ts must b e id ent ic al to thos e u sed in th e or i gi n al
ci rcu its. Servi ce sho ul d b e per formed by qu alif ied p ers on nel
on ly.

2. Alte rati on s of t he des i g 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 ill f urth er r el i eve t he manu factu rer
of r esp onsi b ility for perso na l injury or pr op erty dam ag e r es ult in g
th erefr om.

3. M an y electr i c al an d m ech anic a l p ar ts in th e prod ucts ha ve
special safety-related characteristics. These characteristics are
oft en not e v iden t f rom vi sual insp ec ti on n or c a n t he pro tec t io n
aff or de d by th em nec e ssar i l y be ob tai n ed b y u sing rep lacem en t
com po ne nts ra ted f or hig he r voltag e, w att ag e, etc. Rep lacem en t
p arts whic h ha ve th ese sp eci al s afet y charact erist ics ar e

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

components having such features are ide ntified by shading
on t h e sche mat ics and by (!!!! ) on the parts list in Service
manual. T he us e of a sub sti tu te rep lacem en t whic h do es n ot

h ave th e s ame saf ety ch ar act erist ics as t he reco mm en de d
replac em ent part sh own i n th e parts li st of Ser v ice m an ual m ay

cause shock, fire, or other hazards .

4. Do n't short between the LIVE s ide ground and ISOLATED

(NE UTRAL) 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 GN D, 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 sur ing a ppa ratus ( os cil lo scop e etc.)
th e LI VE si d e GND an d IS OLA TED(N E UTRAL ) sid e G ND or
EARTH side GND at the s ame time.
If above not e will not be kept, a fuse or any parts will be broken.

5. If any repair has been made to the chassis, it is recommended
th at t he B1 set ting shou l d b e c h ecke d or adj u ste d ( See
ADJUST M ENT OF B 1 POW E R SUPPL Y).

6. The hi gh v ol ta ge applie d t o th e pi ctu r e tube mu st con form with
th at s p ec ifi ed i n S er v ice m an ual. E xcess ive h igh vo lt ag 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 ever e arc ing occur s, r em ove t he AC power

immed i ate ly and de termine th e cause b y visua l insp ect ion
(inc or r ect install at ion, cr ac ke d or mel te d high vo lt age har n ess,
p oor so lder i ng, et c.) . T o m ai nt ain the p r ope r mi n im u m le vel of
sof t X- R ay emis si on, c omp on ents in th e high voltag e cir c uitr y
incl ud i ng t he pict ur e tube must b e t he exac t r ep l aceme nts or

alte rn at ives ap prov e d b y th e manuf act ur er of th e c omplet e
prod uct.

7. Do n ot c hec k high volt ag e by drawing an ar c. Use a hi gh volt ag e
meter or a hi g h v ol tag e probe wit h a V TVM . Di s cha rge th e
picture tube before attempting meter connection, by connecting

a cl i p lead to the grou nd frame a nd conn 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. When service i s r equ ire d, ob s er ve th e or i gina l lea d dress. Ex tr a
prec aut ion sh ou ld b e given t o assure correct l ea d dress in th e
high vol tag e ci r cui t a r ea. W her e a s hor t circui t h as occ u rr e d,
th ose co mpon ent s tha t i ndi ca te ev ide nce of ove r hea ting sho ul d

b e r e pl ace d. A lwa ys use th e ma nuf act urer's r ep l acemen t
components.

9. Isolation Check

(Safety for Electrical Shock Hazard)

Af ter re-ass emb ling th e pr odu c t, alw ays per f orm an i solat 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, s cr ew he ads, ea rph one jack, c on tr ol shaf ts, etc.)
to be s u re the p r odu c t i s s af e t o o perate with ou t d an ger of
elect rical s hoc k.

(1) Dielectric Strength Test

The is o l ati on be tween the AC pr im a ry ci rcu it an d all me tal p arts
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 chas s is should withs tan d a volt age of 3 000 V
AC (r.m.s.) for a period of one second.

(. . . . W iths tan d a vo lt ag e of 1 10 0V A C ( r .m. s .) to an ap pl ianc e

rate d up to 12 0V , an d 3 00 0V AC ( r .m. s .) to an ap pl i an ce rat ed
200V or more, for a period of one second.)
This meth od of test requires a test equipment n ot g enerall y fou nd
in t he s er vic e trade.

(2) Leakage Current Check

Plug th e AC l in e c ord d ir ect ly into the A C ou tlet (d o n ot use a lin e
isol ati o n transf orm er dur in g this check .) . Usin g a " Leakag e

Curr ent Teste r", me asure th e lea kag e current f rom each exp osed
metal p ar t of the ca bi ne t, p art icu lar l y any e x pos ed me tal p ar t
h avi ng a re turn pa th to t he ch as sis , t o a kn ow n go od eart h
grou nd (wa ter pi p e, e tc.) . An y l eaka ge cur r en t must not e x ceed

0.5mA AC (r.m.s.).
Howev e r, i n tropic al ar ea , th is mus t 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 ir ect ly into the A C ou tlet (d o n ot use 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 ore sens it i vity in th e fo llow i ng
mann er . C on nec t a 1 50 0Ω 10W res ist or para lle led b y a 0 .15µF

AC-type c apacit or bet ween an expo sed met al pa rt and a kno wn
g ood e ar th gro un d ( wa ter pi pe , etc.). M eas ure th e AC volt ag e
acr oss th e r es ist or with th e AC vo ltm eter . Move th e r esi s tor
con nec ti on to each ex p ose d me tal par t, p art i cularly a ny exposed

metal p ar t hav in g a r etu rn pat h to the ch ass is, an d m easu re th e
AC vol tag e ac ro ss the r es ist or . Now, re vers e th e plu g in th e AC
ou tl et and repe at eac h m ea s ur em en t. An y vol t age measu red
must no t e xceed 0 .7 5V AC (r.m.s.). This c orresponds to 0.5mA
AC (r.m.s.).

Howeve r, in tropica l area, this must n ot exceed 0.3V AC ( r.m. s.) .
This corresponds to 0.2mA AC (r.m.s.).

AC VOLT METER
(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.52024

3

A

V-21F3

A

A

V-21FR3
V-21FMG3B

FEATURES

"

New c h assi s d esign enabl es us e of an int eractive on-scr ee n c ont ro l.

"

Wide ran ge volt age ( 1 10V～240V) AC power input.

" With AUDIO / VI DEO INPUT & OUTPUT te rminal.
"

MUT IN G button can r ed uce th e audi o level to z er o i nst ant l y.

" Func t ion al r em ote contr ol t o oper a te T V set (f or chann el se lect, volum e con tr ol , p ower ON /OFF , etc. ) f rom a d ist anc e.
"

I2C bu s con tr ol ut ilizes single chi p ICs for IF, V /C, DE F. VSM PR ES ET, PRESET & SETUP T OUR.

" By m eans of AUTO PR OGRA M, th e TV s tatio ns c an b e s electe d automatica lly a nd th e TV chann el s c an al so b e r ear r an ged a utom atically.
" The TELETEXT SYSTEM has a built-in FLOP system. (Only for AV-21FR3)
"

Built- in ECO MODE (ECONOMY, ECOLOGY)

In acco rdanc e with the br ig ht nes s in a roo m, th e brig ht ness and / of con tr ast of th e p ic tur e c an b e a djus t ed autom at ically to mak e the

op ti mu m pictu re whi c h is eas y on the e ye.

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

SYSTEM BLOCK DIAGRAM

"

IC702

MEMORY

IC701

SCL2/SDA2 TCL/TDA

MICRO

COMPUTER

IC301

VIDEO/CHROMA

DECORDER

SCL1/SDA1

IC821

TEXT DECORDER

Only f or AV-21FR3

TU001

TUNER

4

No. 52024

A

3

A

A

FUNCTIONS

■

FRONT PANEL

MENU buttons

1

CHANNEL －/＋ buttons

2

VOLUME －/＋ bu tto ns

3

AI ECO sen sor

4

REMO TE CONTR OL s ens or

5

ON TIMER lamp

6

POWER lamp

7

MAIN POWER button

8

A/V IN PUT t ermin al

9

HEAD PHONE jack

10

V-21F

V-21FR3

V-21FMG3B

10 9 1

■

REAR TERMINAL

1

3 4

2

5 6 7 8

2

3

4

5

ANT Terminal

1

VIDEO INPUT Term i nal

2

VIDEO OUTPUT Terminal

3

AUDIO INPUT T ermin al

4

AUDIO OUT PUT Terminal

5

No. 52024

5

A

V-21F3

A

A

t

V-21FR3
V-21FMG3B

■

REMOTE CO NTRO L UN IT

RM-C90 : AV-21FR3

1

2

3

4

5

6

7

8

9

10

ECO S ENSOR ke y

1

COLOUR SY STEM ke y

11

12

13

14

15

16

17

18

2

SOUND SYSTEM key

3

DISPLAY key

4

TV/VI DEO key

5

OFF TIMER key

6

PICTURE MODE key

7

CHANNEL SC AN key

8

RETURN＋key

9

CHANNEL －/＋ 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-21F3 RM-C364 : AV-21FMG3B

1

2

3

4

5

6

7

8

9

Exc e pt f or diff er enc e i n bo dy colo ur, t he Rem ote Contro l Uni

RM-C 36 4G Y and RM-C3 64 ha ve exac tl y t he s am e Fu nctions.

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. 52024

A

3

A

A

MAIN DIFFERENCE LIST

V-21F

V-21FR3

V-21FMG3B

Part Na me

Model Name

AV-21F3 SCG-1411A-H2

AV-21FR3

AV-21FMG3B SCG-1432A-H2

Item

Model Name

AV-21F3

AV-21FR3 B/G, I, D/K PAL / SECAM

AV-21FMG3B B/G, I, D/K,&M

Main PWB Front Cabinet Remote Control Unit Pos,Serial Label

LC10394-038A-H RM-C3 64GY-1H

SCG-1402A-H2 LC10394-037A-H

LC10394-039A-H RM-C364-1H CM47385-00B-H

TV RF Syst em Col our Sy stem

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

PAL / SECAM

NTSC3.58 / NTSC4.43

RM-C90-1H

Interm ediate

Frequency

(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)

Teletext System

FL OP

No. 52024

7

A

V-21F3

A

A

V-21FR3
V-21FMG3B

SPECIFIC SERVICE INSTRUCTIONS

DISASSEMBLY PROCEDURE

REMOVING THE REAR COVER

1. Unp lug the po wer pl u g.

####

!!!!

.

an d a

2. As s h own i n f igur e , remove t he 6 screws marked

screw marked "

3. Wi thdr a w t he r ear c o ver to wa rd you .

".

""

REMOVING THE MAIN PW BOARD

" After removing the rear cover.

1. Sli ght ly r ai se t he both si d es of t he MAIN PW BOARD b y ha nd .

2. Wi thdr a w t he M AIN PW B OARD b ackw ar d.

(If necess ar y, ta k e off the wire c lamp, c onn ect or s etc. )

REMOVING THE SPEAKER

"

After removing the rear cover.

1. As sh own in fi gu re, r em ove th e 2 screws marked

2. Follow th e s ame st eps wh en r em oving th e oth er ha nd sp eak er.

CHECKIN G THE MAIN PW BOARD

1. To ch eck the ba ck s ide of the PW B oar d.

1) Pu ll out the MA IN PW Bo ard. ( Ref er to RE MO VING TH E MAIN

PW B oar d)

2) Er ect th e PW Boar d vert ic al l y so th at you ca n easil y ch eck th e
b ack side of th e PW Boar d.

[CAUTION]

" W hen e re cting th e PW Boar d, be caref ul s o t hat ther e w ill b e n o

con tact in g with ot her PW Boar d.

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

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

WIRE CLAMPIN G AND CABLE TYING

1. Be sure to cla mp the wir e.

2. Never r em o v e th e cable ti e use d f or tying th e wires to gethe r.
Sh oul d i t be inad verte ntly r em ove d, be su re to tie th e w ires w it h a

new cable tie.

8

No. 52024

A

3

A

A

FRONT CABI .

V-21F

V-21FR3

V-21FMG3B

SP EAKER

C

CRT SOCKET

PWB

MAIN PWB

SP EAKER

C

POWER

CORD

REAR

COVER

B

A

No. 52024

9

A

V-21F3

A

A

S

U

/C

QSS

OLU

OS

V-21FR3
V-21FMG3B

REPLACEMENT OF MEMORY ICs

1. MEMORY ICs

Thi s mod el u ses me mo r y I Cs. This memo r y IC da ta are f or pr o per opera tion of th e vide o a nd defl ect 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 memory ICs written with the initial 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 CONSTAN T SET

・・・・ It must not adjust without 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 le th e SE RV ICE MEN U is d is play ed , ag ain p r ess the DISPL AY key and

PICTURE MODE key simultaneously, and the SYSTEM CONSTANT SET

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

4) Check th e s ettin g value s of the S YSTE M CON ST AN T S ET of T able 1 If th e

val u e is diffe re nt, sel ect the sett i ng it em wi th the MENU ▼/▲key, and set

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

5) Press the DI SPLAY ke y twice, and r etu rn to th e n or m al scr ee n.

(5) Receive channel of setting

Refe r to th e OPE RATING INST RUCTIONS and set th e r ece i ve c ha nn el s

(chan nels prese t) as descr i be d

(6) User Setting

Check t he us er s ettin g valu e of Tab le 2, a nd if se tti ng value is di f feren t, s et

th e co rrect valu e.

For setting , refer to the OPE RATING INSTRUCTIO NS.

(7) Setting of SERVICE MENU

Ve rif y the s et ting it ems of th e SER VICE MENU, and r eset whe r e n ecess a 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 r e mote control unit is diff erent fr o m

th at of t he RM -C36 4GY & R M -C3 64 remot e co ntrol unit, the fu nctio ns of bo th

un its are th e same S o pl eas e us e th e at tach ed diagr a m for th e RM-C90

remote control unit for the RM -C36 4GY & RM-C364.

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

KEY ASSIGNMENT OF REMOTE CONTROL UNIT

ERVICE MEN

1.IF 2.V

3.DEF 4.VSM PRESET

5.PRESET

6.SETUP TOUR OFF

1-6 SELECT DISP : EXIT

******

****** *****

***** **

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

**********

*** ** **

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

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

**.***

****

** ***

** ***** ***

***

******

Fig.1

SY STEM C ON STA NT- ⅠⅠⅠⅠ

SYSTEM CONSTA NT SE T 1

COL O UR :
BILIN GUAL : N O

TUNE R : MU
ECO SENSOR : YES

LANG U AG E :

: SELECT

/

- / + : OPERATE DISP : EXIT

***

***

SY STEM C ON STA NT-

SYSTEM CONSTA NT SE T 2

B/B SO UND : O F F
LOCK : 180

COL OUR AU TO : NO

ALC : NO
TEXT R ATE : 2 0

: SELECT

/

- / + : OPERATE DISP : EXIT

: MINT

SY STEM C ON STA NT- ⅢⅢⅢⅢ

SYSTEM CONSTANT SET 3

AMP T UNER : NO
VNR : YES

TEXT TABLE : CYL

M PWM : P

V

ⅡⅡⅡⅡ

: SELECT

/

- / + : OPERATE DISP : EXIT

DI SPL A Y k ey

MENU

/ key

MENU

▼/▲

key

Fig.2

NUMBERS

PICTURE

MO DE k e y

key

(RM-C90)

10

No. 52024

A

3

A

A

SE TT ING OF SY STEM C ON STANT SET

Setting item Setting contents

COLOUR

BILINGUAL

TUNER

AI ECO S ENSOR

LA NG UA G E

B/B SOU ND

LO CK

COLOUR AUTO

QSS

ALC

MUL TI . PA LTRIPLE

YE S NO

MU MA

YE S NO

E/R/A /P E/R

ON OFF

YES 10 20 ～ 230

250 240

YE S NO

MI NT MQ SS

YE S NO

V-21FMG3B

AV-21F3 AV-21FR3 AV-21FMG3B

TRIPLE. MULTI

NO

MU

YE S

E/R

OFF

18 0

NO

MI NT

NO

Setting value

E/R/A /P

V-21F

V-21FR3

TEXT RAT E

AMP TUNER

VNR

TEXT TABLE

VOL UM PW M

USER SE T TING V ALUES

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 TRUCTION

VOL UME About 10 AI ECO S EN SOR OFF

TV/V IDEO

ON SCR EEN DI SPLAY

COLOUR SYSTEM PAL ON TIMER PR1 0:00

SOUND SYSTEM B / G BLUE BACK OFF

OFF TIMER OFF OSD.Shows 00 CHI LD LO CK OFF

PICTURE MODE (VSM) BRIGHT

10 20 40 80

YE S

YE S NO

ARA CYL

POS NEG

NO

TV VNR OFF

POSITION INDICATION AUTO SHUTOFF OFF

20

NO

YE S

CYL

POS

Table 1

Table 2

No. 52024

11

A

V-21F3

A

A

)

V-21FR3
V-21FMG3B

INITIAL SETTING VALUE OF SERVICE MENU

1. Ad justmen t of t he SE RVICE MENU is m ad e o n th e bas is o f the initial setti ng va lues ; howev er, the new setting va lues w hich
set the screen in its optimum 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

-50

+ 0

+ 0

4. CONT .

5. COLOUR -63～+63 + 0

TV

AV -21F3

6. TINT

7. SECAM BL ADJ.

8. SHARP

3. DEFL ECTION

1. VER. POS ITION

2. HOR. POSITION -16 ～ +15 +1 + 4

3. VER. HEIGHT - 64 ～ +63 -40 + 0

4. VE R . L I NE ARIT Y -32 ～ +31 +13 - 3

5. VER. S WCURVE - 32 ～ +31 -32 + 0

6. H OR. VC O AD J UST

VI DEO

Do Not Ad j.

Setting item Variable range

AV -21FR3

AV -2 1FMG3B

TV - 8(Fixed

VI DEO

Do Not Ad j.

-63 ～+63

-63 ～+63

-31 ～+31

-32～+31

-04 ～ +03

-63 ～ +62 + 0 + 0

+ 0

+ 0 + 0

+0 + 0

+8 + 0

+ 0

+15(Fi x ed )

Initial set ting v al ue

fv : 50Hz MODE fv : 60Hz MODE

- 2 - 3

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 LU E +15

BR IG HT SET TING VA LUE +1 5

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

SHARP SE TT IN G VA LU E +1 5 +1 2

BRIGHT STANDARD SOFT

No. 52024

A

3

A

A

5. PRESE T

The items in the following table, it i s no requirement for adjustment.

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

Colour Sy stem Do Not Ad j u st

V-21F

V-21FR3

V-21FMG3B

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. DE LAY TIME

VI DEO 0 2 0 2

6. BLACK EX P START

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 L EVEL 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 SE CAM NT SC 3.5 8 NT SC 4.4 3

＋3 ＋3 ＋3 ＋3

Initial set ting v al ue ( Fixed value)

20 . R GB LIM 1 1 1 1

21. RGB LIMIT LEVEL 2 2 2 2

23. TEXT H. POSITION -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. 52024

13

A

V-21F3

A

A

V-21FR3
V-21FMG3B

REPLACEMENT OF IC301 (IF V/C DECODER)

" For the IC301(IF V/C DECODER) of t his mode l, a ll data are written in the micro-computer. So, wri te the data i n the micro-

computer in accordance with the following procedures before starting adjustment.

PROCEDURES

(1) Tur n the POWE R O F F.
(2) Replace t he IC301 with a n ew o ne.

(3) While pr es sing MENU bu tto n a nd VO L+ bu tto n ON the FRONT CABIN E T simul t aneous ly, t urn th e POW ER O N. When the POW ER is

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

LOCATIONS OF FRONT PANEL BUTTONS AND LAMPS

MENU buttons

1

1 2 3 4 5

CHANNEL －/＋butto ns

2

(ME NU －/＋b uttons)

VOLUME －/＋ buttons

3

(MENU －/＋ bu tto ns)

AI ECO sensor

4

REMOTE CONTROL sensor

5

ON TIMER lamp

6

POWER lamp

7

MAIN POW ER button

8

7 8

6

14

No. 52024

A

3

A

A

SERVICE ADJUSTMENTS

BEFORE STARTING SERVICE ADJUSTMENT

1. There ar e 2 w ay of adjus ti ng thi s TV: One i s wi th t h e
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. The sett ing values

which adjust the screen to its optimum condition may differ
from the initia l s etting v al ues.

3. M ake s ur e th at connect ion is c orrec t l y made t o AC p ower
source.

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

5. Unl ess ot herwi se spec if i ed, prep ar e th e mo s t s uita bl e r ec epti o n
or inp ut si gn al for adj ust m ent.

6. Nev er t o uch any ad ju s tment parts, wh i ch ar e no t spe cif ied
in the li st for thi s ad justme nt VRs , tra nsf or ms, c ond e n ser s,

etc.

7. Prep ar ati o n for adj ustm en t
Unless otherwise specified in the adjustment instructions, preset

the following functions with the REMOTE CONTRO L UNIT.

User mode position

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 S HUT O FF OFF

V-21F

V-21FR3

V-21FMG3B

CENTER

MEASURING INSTRUMENT AND FIXTURES

1. DC voltmeter (or digital voltmeter)

2. Oscilloscope

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

4. Remote control unit

ADJUSTMENT ITEMS

Adjustment it em Ad justment item

B1 POW E R SUPPLY

FOCUS adjustment VSM PRESET setting

IF ci rc uit a djust me nt

V/C (Video / Chroma) circuit adjustment

DEFLECTION c ircuit adjustment

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

No. 52024

15

A

V-21F3

A

A

3

t

V-21FR3
V-21FMG3B

BASIC OPERATION OF SERVICE MENU

"

The adjustment using SERVICE MENU

The f ol lowing adjus tme nt it ems us e t he SE RV IC E M EN U in th e s er ies of the adj u s tm ent . The ad ju stment 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 s cr een to the o pti m 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 ollo win g ite ms of s etti n gs.

1.I F ･･･････ ･････････････ ･･･ Ad justment of th e IF cir cuits.

2.V /C ･･････････････････････ Ad ju stm en t of th e VID EO /CHRO MA cir cuit.

3.DEF ････････････････････ ･ Adjustmen t of th e DEFLECTION circuit.

4.V SM PRES ET ････････････ Ad ju stmen t of th e init ia l sett in g va lue s of VSM c o nd it ion as STA NDA RD, SOFT a nd BRIGHT .

(VSM : Video Status Memory)

5.PRESET

6.SETUP TO UR OFF ･･･････ ･ It s hould b e able to selec t m ode (LANGUAG E and AUT O 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 co m plete th e ad j ust me nt wor k , pr ess th e DISPLA Y key to retur n t o th e

SERVICE 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 charact ers a r e ch ang ed .

･･･････ ･･････････

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

[Should be OFF].

SE RVICE M EN U

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

5.PRESET

6.SETUP TOUR OFF

1-6 SELECT DISP : EXIT

******

***********

***** **

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

**********

*** ** **

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

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

**.***

****

** ***

** ***** ***

***

******

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

PICTURE

MO DE k e y

NUMBERS

key

DI SPL A Y k ey

MENU

MENU

▼/▲ key

－/＋key

(RM-C364GY)

(RM-C364)

Exc e pt for diffe re nc e in b ody col o ur , the Remot e Co ntr ol U ni

RM-C 36 4G Y and RM-C3 64 ha ve exac tl y t he s am e Fu nctions.

16

No. 52024

A

3

A

A

[Method of setting]

1. IF

[1. VCO]

① 1 K ey ･･･････ ･････････････ ･････ Select 1.IF.
② 1 K ey ･･･････ ･････････････ ･････ 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 K ey･･･････ ･･･････････ As you press this key twice, you will return to th e SERVIC E M E NU.

[2. DELA Y P OINT]

① 1 K ey･･･････ ･････････････ ･････ Select 1.IF.
② 2 K ey･･･････ ･････････････ ･････ Se le ct 2.DELAY P OINT.
③ ME NU - /+ K ey ･･･････ ･･････････ Set (adjust) the setting valu es o f th e setting it ems.
④ DISPLAY K ey･･････････････････ W hen th is is presse d twice, you will r et urn t o the SE RVICE MENU .

2.V /C, 3.D EF and 4 .V SM PRES ET

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

V-21F

V-21FR3

V-21FMG3B

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

If it is ON , th en y ou tu rn th e TV po we r off , wh en y ou ar e t urn t he TV p ower o n a gain .

No. 52024

17

A

V-21F3

A

A

JUS

6.SETU

ON /

(By p

y)

G

(R)

S

U

O

V-21FR3
V-21FMG3B

SERVICE MENU FLOW CHART

SE RVICE M EN U

ERVICE MEN

1.IF 2.V/C

3.DEF 4.VSM PRESET

5.PRESET

6.SETUP TOUR OFF

1-6 SELECT DISP : EXIT

******

****** *****

***** **

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

**********

*** ** **

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

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

P TOUR

**.***

****

** ***

** ***** ***

FF

OFF

***

******

ressing 6-ke

SU B ME NU 1. I F

IF

1. VCO

2. DELAY PO INT

1-2 : SELECT DISP : EXIT

SU B ME NU 2. V /C

V/C PAL

1. CUTOFF

50Hz

/ :SELECT

- / + : OPERATE DISP : EXIT

(G)
(B)

* **

* **

* **

VCO (CW)

TOO HIGH
ABOV E REFERENCE

BELOW REF ERENCE
TOO LOW

AFT ADJUST
VCO ADJUST

FINE

DELAY POINT UHF

AGC TAKE- OVER

- / + : OPERATE DISP : EXIT

***.**

T REFERENCE

MH z

** *(* *)

** *(* *)

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

** *(* *)

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

DISP : EXIT

**

SU B ME NU 3. D EF

DEF

1. VER. POSITION

50Hz

/ :SELECT

- / + : OPERATE DISP : EXIT

PAL

***

SUB ME NU 4. V SM PR ES ET

BRI GHT

TINT
COLO UR

HT

BRI
CONT.
SHARP

/ :SELECT

- / + : OPERATE DISP : EXIT

**
**

**
**

**

SUB ME NU 5. P RE SET

18

PRESET

1. C -TRAP FI X

50Hz

/ :SELECT

- / + : OPERATE DISP : EXIT

PAL

B/ G

***

No. 52024

A

3

A

A

ADJUSTMENT LOCATIONS

V-21F

V-21FR3

V-21FMG3B

TOP

MAIN PWB

F901

CRT SOCKET PWB

TP-47R

TP-47G

T

IC701

(SOLDER SIDE)

U

TP-47B

E1

TP-E

CRT EARTH WIRE
(BRAIDED ASS'Y)

FRONT

IC702

MEMORY IC

DEG

PW

S

TU00 1

IC301

T

1

S

1Pin TP-91(B1)
2Pin NC

3Pin X-ray2
4Pin X-ray1

5Pin TP-E( )

HV

U

HVT

UPPER:FOCUS
LOWER:SCREEN

No. 52024

19