JVC AV21BF10EES, AV21BF10EJS, AV21BF10ENS, AV21BF10EPS Service Manual

S

S

S

SERVICE MANUAL

COLOUR TELEVISION

AV21BF10ENS
AV21BF10EES

AV21BF10EJS

AV21BF10 ENS

AV21BF10EE

AV21BF10EJ

AV21BF10EP

CONTENTS

AV21BF10EPS

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

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

!

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

! SPECIFIC SERVICE INSTRUCTIONS ････････････････････････････････
!

SERVICE ADJUSTMENTS

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

★ OPERAT ING INSTRUCTIONS
★ STAND ARD CIRCUIT DIAGRAM ････････････････････････････････

1

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

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

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

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

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

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

･･･････････････････････････････････

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

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

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

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

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

････････････････････････････････

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

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

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

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

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

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

COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD.

･････････････････････････････ 2

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

･･･････････････････････ 4

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

･･･････････････････････ 5

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

･･････････････････････

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

････････････････････････････････････ 17

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

･･･ 5

･･････

･････････････ 6

･･････････････････････････

････････････････2- 1

････････････････････････････････

9

No.518 84
Apr. 2002

A

V21BF10ENS

A

A

A

V21BF10EES
V21BF10EJS
V21BF10EPS

SPECIFICATIONS

Content

Item

Dimensions (W x H x D) 60cm x 45cm x 48cm

Mass 22.2 kg

TV RF System B/G B/G, D/K, K1 I/I’ B/G, L/L’

TV Mode PA L PA L / SEC A M PAL PAL / SECAM

Colour Sy stem

Teletext System Fast ext / TOP

Stere o Sy st em A2 / NICAM

Tuning System Fr equenc y Synt hes izer Tun in g S ystem

Numb er Of CH me mory pos ition 10 0 ch

Receiving Frequency

Intermediate Fr equency

Colour Sub Carrier Frequency PAL (4.43MHz), SECAM (4.43MHz), NTSC (3.58MHz/4.43MHz)

Aerial Input Termi nal 75 Oh m Un b al anc ed

Power Input AC 1 70V ~ 270V , 50H z

Power Consumpti on 95W (Max.) / 73 W (Avg.)

Pictur e Tube 21 inch measu red diag on al ly

Hi gh Vo lt ag e 27kV ( in cut-off serv ice mo de)

Speake r 57mm x160mm ellipse type x2

Au dio Output 8W+8W

Input

Output

Remote Control Unit VE-30015781 (RM-C85 ), Batte r y size :AA A/R03 x 2

Video Mode

VHF (VL) 46.25MHz ~ 168.25MHz

VHF (VH) 17 5.25MHz ~ 46 3.2 5MHz

UHF 47 1.2 5MHz ~ 86 3.25M Hz

CATV Super (S11-S20) & Hyper (S21-S41) bands receivable

VIF Carrier 38 .9 MHz

SIF Carrier

Vide o 1V(p-p), 75 Ohm

S/V ideo

Au di o (L/R)50 0 mV( rms) , H i g h Im pe dance

Vide o 1V(p-p), 75 Ohm

Au di o (L/R)50 0 mV(rms), Low I mp ed anc e

Rear Sid e

Front Side AV 3 ( Vi d eo/A udio)

Front Side

Rear Sid e

AV21 BF10 ENS AV21 BF10 EES AV 21BF10EJS AV21 BF10 EPS

PA L / N TSC 3. 58 /

NTSC4.43

32.4 MHz (6.5 MHz)

32.9 MHz (6.0 MHz)

33.4 MHz (5.5 MHz)

Y : 1V(p-p) Positive
C : 0.286V(p-p)

AV 1 ( Vi d eo/A udio/RGB)

AV 2 (Vid eo/A ud io/S-VHS)Input Terminal

Headph on e jac k (Ster e o m i ni jac k 3.5∅)

AV1 (V ideo/Audio)Output Ter minal

AV2 ( V i deo /Audio) ( Sel ecte d TV, AV1 o r AV3 )

PA L / SE C AM /

NTSC3.58 /

NTSC 4.43

PA L / NTSC3. 58 /

NTSC4.43

PA L / SE CAM /

NTSC3.58 /

NTSC 4.43

De sign & sp eci ficatio ns ar e su bje ct to change wi thou t no t ice.

2

No.51884

A

V21BF10ENS

A

S

A

A

S

V21BF10EE

V21BF10EJS

V21BF10EP

■■■■21-pin Euro connector (SCART socket) : AV-1 / AV-2

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

Pin

Signal Designation Matching Value AV-1 AV-2

No .

1 AUDIO R o ut put 50 0mVr ms( N ominal),Low im pe dance

2 AUDIO R input 500mVrms(Nominal),High impedance ○○

3 AUDIO L o utput 50 0mVr ms( N ominal),Low im pe dance

4 AUDIO G ND

5 GND (B) ○○

○

(TV OUT)

○

(TV OUT)

○○

○

(TV/LINE OUT )

○

(TV/LINE OUT )

6 AUDIO L input 500mVrms(Nominal), High impedance

B-W

7B input

FUNCTON SW

8

(SLOW SW)

9 GND (G)

10 - NC -

11 G i n put

12

- NC -

13 GND (R)

14 GND (YS) ○ NC

15 R / C input

16 Ys in put L ow : 0 – 0. 4, Hi g h : 1 - 3 V, 75 Ω○NC

17 GND(V IDEO output)

18 GND(V IDEO input) ○○

19 VID EO outpu t

20 VIDEO / Y inp ut 1V

70 0mV

Low : 0-3V, High : 8-12V, High impedance

70 0mV

R : 700mV
C : 300mV

1V

, 75Ω○

B-W

, 75Ω○

B-W

, 75Ω

P-P

, 75Ω

S-W

(Negative going sync), 75Ω

S-W

(Negative going sync), 75Ω○○

○○

NC

○

○○

○○

○

(R/C)

○○

○

(TV)

NC

NC

○

(only C)

○

(TV/LINE OUT)

21 COMMON GND

○○

[Pin assignment]

No.51884

3

A

V21BF10ENS

A

A

A

V21BF10EES
V21BF10EJS
V21BF10EPS

SAFETY PRECAUTIONS

1. The d es ign of th is prod uct c on ta ins sp eci al har d wa re, ma ny
circuit s and components specially for saf ety purposes. For
con tinu ed pr ot ection , n o chan g es sh ou ld b e ma de to the o ri g inal

d esi gn un l ess auth oriz ed in writi n g by th e ma nu fact urer.
Replac em en t p arts m ust be ident ic al to thos e u sed in th e or i ginal
ci rcu it s. Serv ic e sh ou ld be pe rf or me d b y q ua lifie d perso nn el
on ly.

2. Alte r ati on s of the design or ci r cui try of t he prod ucts sh ould not be
made. Any design alterations or additions will void the
manufact ur er 's warrant y and will f urth er r eliev e t he ma nu factu r er
of r esp onsi b ility for per so na l injur y or p r op er ty d am ag e r esult ing
th erefr om.

3. Man y e lectr i cal an d mech ani cal parts i n the products ha v e
special safety-related characteristics. These characteristics are
oft en no t e v ident f r om v isua l i nsp ection n or ca n t he pr o tec t io n
aff or de d by th em nece ssar i l y be ob tain ed b y u sin g r ep l acement
com po ne nts ra ted f or hig he r vol tage, watt ag e, etc. R ep l acem en t

p arts whic h ha ve th ese sp eci al s afet y ch ar ac t er ist ics are
ide ntified i n the parts list of Servic e manua l. El ec tric al

components having such features are ide nti fied by shading
on t he sche mat ic s an d by (!!!! ) on the parts list in Service
manual. The us e of a sub s ti tu te rep lacem en t whi ch does n ot

h ave th e same saf ety ch ar act er ist ics as t he r eco mmen de d
replac em ent part sh own i n th e p ar ts lis t of S er vic e man ual may
cause shock, fire, or other hazards .

4. Don't shor t between the LIVE side 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 the GN D is sh own by the LI VE si de G ND, the
ISO LATED(NEUT RAL) side GND a nd EA RTH si de GND. Don' t
sh ort b etw ee n the L IVE si de GN D a nd IS OLAT E D( NEUTR AL)

si de GN D or EA R T H side GN D an d ne ver meas ur e w i th a
measu ring app ar atu s (osc illosc ope et c.) th e LIVE si d e GND an d
ISOLATED(NEUTRAL) side GND or EARTH side GND at the
same time.
If above note will not be kept, a fuse or any parts will be broken.

5. If any repair has been made to the chassis, it is recommended
th at t he B1 set ti ng s hou l d b e ch eck e d or adju ste d ( Se e
ADJUST MENT OF B1 POWE R SUPPL Y) .

6. The hi gh v olta ge app li e d t o th e pictu re tu be mu st confor m wit h
th at s p ecified in S ervi ce manual. E xcessi ve high volt ag e c a n
cau s e an i ncr e ase i n X- R ay em i ssi on , ar c ing an d possi b 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 occ ur s, r emove t he AC pow er
immed i ate ly an d de ter m i ne th e c a use b y visua l insp ec t io n
(inc or rect ins tal lat i on, cracke d or melte d high vo ltage har n ess,
p oor so lder i ng, et c.). To maint ai n the p roper min im u m le vel of
sof t X- R ay emi ssi on, c omp on en ts i n th e hi gh v oltag e cir c uitr y
incl ud ing t he pi ct ur e tu be must be t he e xact r ep l aceme nts or

alte rn at i ves ap pr ove d b y th e ma nuf act urer of th e c om pl et e
product.

7. Do not c hec k high volt age b y dr awing an ar c. Us e a high vol t age
meter or a hi g h v oltag e pr ob e wit h a V TVM. Discharge th e

picture tube before attempting meter connection, by connecting
a cl i p lead to th e gr ou nd f ra me and c onn ectin g th e other end of
the lead through a 10kΩ 2W resi sto r to the anod e butt on .

8. When se rvice i s requ ire d, ob ser v e th e or i gi na l lea d dress. E xtr a
prec aut ion sh ou ld b e g iven t o ass ur e corr ec t l ea d dr ess i n the
high vol tag e c ircui t a r ea. W her e a s hort ci r cuit h as oc cu rre d,
th ose co mp on ent s tha t i ndi ca te evide nce of ove r hea ting sho ul d

b e r e pl ace d. A l wa ys u se th e ma nuf act urer's r ep l acem en t
components.

9. Isol ation Check

(Safety for Electrical Shock Hazard)

Af ter re- ass emb l in g th e pr odu c t, al w ays per f orm an i sol at ion
ch ec k on the expo sed metal parts of t he c abin et ( a ntenn a

ter m inals, video /audio inpu t and ou tput t erminals , C on trol kn obs,
metal cabinet, screwheads, earphone jack, control shafts, etc.)
to be s u re th e p roduct is s af e t o ope r ate with ou t dan ger of
elect ri cal s hoc k.

(1) Dielectric Strength Test

The iso l ati on be tween the AC pr imary ci rcuit an d all metal parts
exp osed t o th e us er , p arti cular l y any e xp os ed met al p art having a
retu rn p ath to t he chass is sho uld withs tan d a vol t age of 3 000 V
AC (r.m.s.) for a period of one second.

(. . . . W it hs tan d a v o lt ag e of 1 10 0V A C (r.m. s.) t o an applianc e

rate d up to 12 0V , an d 3 00 0V AC ( r .m. s.) to an ap pl ian ce r at ed
200V or more, for a period of one second.)
This meth od of test requi res a t est equ ipment n ot g enerally found
in t he servic e trad e.

(2) Leakage Current Check

Plug th e A C line c ord d irect ly into th e AC ou tlet ( d o not use a line
isol ati o n tr ansf or m er du r in g thi s ch eck.). Usi n g a " Lea kage
Curr ent T este r", me asur e th e lea kag e cu rre nt f rom each exp osed
metal p art of the cabinet, p art icu larly any expos ed me tal p ar t
h avi ng a re tur n path to the c h assis , t o a kn own go od ea rt h

ground (water pip e, e tc.) . An y l eaka ge curren t m ust n ot e xceed

0.5mA AC (r.m.s.).
Howev e r, i n tr op ic al area , th is must no t exce ed 0.2 mA AC
(r.m.s.).

"""" Alternate Che ck M et hod

Plug th e A C line c ord d irect ly into th e AC ou tlet ( d o not use a line
isol ati o n tr an s for m er dur ing t hi s che c k.). U se an AC vo lt me ter
h avi ng 1 00 0 ohms pe r volt or mor e s ens itivi ty in th e fo ll owing
manner. Con 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 expo sed met al pa rt a nd a known
g ood e ar th gro un d (water pipe , etc.). M eas ure th e A C volt ag e
acr oss th e res ist or w ith th e AC vo ltm eter . Move th e r esis tor

con nec ti on to each exp ose d metal part, part ic ularly a ny exp os ed
metal p art havin g a retu rn pat h to t he ch as sis , an d m easu re th e
AC vol tag e ac ro ss the res ist or . No w, re vers e th e pl u g i n th e AC
ou tl et and re pe at eac h mea s ur emen t. Any volt ag e me asured
must no t e xceed 0 .75V AC (r.m. s.). This c orre spo nds to 0.5mA
AC (r.m.s.).

Howeve r, in tropica l are a, 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

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FEATURES

V21BF10ENS

V21BF10EE

V21BF10EJS

V21BF10EP

1. It is a remote controlled color tele vision.

2. 100 programs fr om VH F , UHF b an ds or cable cha nn el s can be

pres et.

3. It c an tun e c able cha nn el s.

4. Cont ro llin g the TV is ver y easy by its m en u driven s yst em .

5. It has two Eurocon n ector s ock ets fo r exte rnal device (such as
vi de o r eco rder, vid eo ga mes , a udio set, e tc.)

6. Fr ont AV Inp ut av aila ble.

7. St ereo s ound s ystem s (German + Nic am) ar e a vail ab l e.

8. Full fu nction Tele text (Fast ext, Topte xt).

9. It i s possible to connec t head phon e.

10. Direct channel access.

11 . APS (Aut om at ic Programming System).
12 . All programs ca n b e nam ed .
13 . Forwar d o r backw ard au to ma tic tu ni ng .

14 . Au tomat ic sou nd mu te wh en no tran smission.
15 . 5 mi nu tes aft er the br o adc asting (cl osedown), the T V s witch es

itsel f automatica lly t o st and -by mod e.

MAIN DIFFERENCE LIST

MODEL No.

Parts Name

MAIN PW B VE-2 00738 51 VE -2 00 738 61 VE -2 00 73856 VE -2 00 73866

AV21BF10ENS AV21BF10EES AV21BF10EJS AV21BF10EPS

MULTISOUND PWB VE-20078991 VE-20079020

INST B OOK VE -5 00 246 64 VE -5 00 24666

TV RF system B/G B/G, D/K, K1 I/I’ B/G , L /L’

Colour s ystem
(TV MODE)

PA L PAL / SECAM PAL PAL / SECAM

VE -5 00246 70 VE -500 24668

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SPECIFIC SERVICE INSTRUCTIONS

DISASSEMBLY PROCEDURE

REMOVING THE REAR COVER

1. Remove th e 6 screws marked A.

2. Withdraw t he R EAR COV ER t owar d you.

REMOVING THE FRONT AV + HEADPHONE JACK
PWB

" Take out t he rear co ver.

1. Remove th e 2 s c re ws ma r ked B, an d remove th e FRONT A V +
HEAD PHONE J ACK P WB.

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REMOVING THE SPEAKER

" T ake ou t t he rear co ver.

1. R em ove the 4 screws marke d C as sh own in the fig ure.

2. R em ove th e sp eake r.

3. Rem ov e th e othe r hand spe ak er same step.

REAR COVER

MAIN PWB

PI CTUR E TUB E

C

B

FRON T CABI NET

FRON T CABI NET

SPEAKER (LEFT & RIGHT)

FRON T AV +
HEADPHONE JACK PWB

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SETTING OF THE LAST MEMORY FOR SHIPMENT

■■■■ USER SETTING VALUES

Setting Item Setting Value Setting Item Setting Value

SOUND MENU FEATURE MENU

BA SS CEN TER SLEEP TIMER OFF

TR EBL E

↑

CHILD LO CK OFF

V21BF10ENS

V21BF10EE

V21BF10EJS

V21BF10EP

BALANCE

EFFECT OFF

PICTURE MENU INSTALL TV CONFIG. MENU

BRIGHT NES S LANGUAGE ENGL ISH

COLOUR COUNT RY ?

CONTRAST AV-2 OUTPUT TV

SHAR PNES S

HUE (only NTSC)

PICTURE MODE AUTO

Thes e ad j ust a re aut om atic a lly

restor ed wh en A PS bi t in S ervic e

menu is set .

The p ro ced ure for sel l ing AP S

bit is described bellow.

↑

■ SETTING APS BIT IN SERVICE MENU

1) En ter s ervi ce menu in TV mode by pressing “INFO” and “ M UTI NG ” keys si mu lt an eou sly . Se rvice Men u will app ear.

2) Se le ct OP TION S by press ing Up /D ow n keys on r em o te c ont ro l un it .

3) Enter OP TIONS by press in g Left /Right ke ys on rem ote control unit.

4) Select OP TION 8 by pressing Up/Down ke ys on remote control unit.

5) Selecte d bit in one OPTI ON is shown by bli nking ch aracter. Se lect B 2 b y press ing L eft /Rig ht keys on remote con trol unit .
DO NOT CHANGE ANY OT HER BIT.

6) Press digit key “1” to set APS bit .

7) Pr ess “ ST A NDARD” key on rem ot e contr ol unit t o exit ser vic e mo de .

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REPLACEMENT OF CHIP COMPONENT

! CAUTIONS

1. Avoid heating for more than 3 seconds.

2. Do n ot rub t he elect rodes an d t he r esis t p ar ts of the patt ern.

3. When r emovi ng a c hip part, mel t th e s older ad equate ly.

4. Do n ot reuse a chip part after removi ng it .

! SOLDERING IRON

1. Us e a hi g h i ns ulati o n solder ing iron with a t hi n po in ted end of it.

2. A 3 0 w s older ing iron is rec omm end ed for easil y remov ing p ar ts .

!

REPLACEMENT STEPS

1. How to remove Chip parts

# Resi st ors, ca pacitors, et c .

(1) As sho wn in th e fi gur e, pus h the pa rt with tweezer s a nd

alte rn at el y melt th e s older at each en d.

2. How to install Chip parts

# R esi st o rs, capacitors , et c .

(1) Apply solder to the patt ern as indicate d in the fig ure.

(2) Sh if t w i th tweezers an d rem o ve th e chip part.

#

Transist ors, diodes , varia bl e resist or s, etc.

(1) Ap ply e xt ra solder to ea ch le ad.

SOLDE R

(2) As sho wn in th e fi gur e, pus h the pa rt with tweezer s a nd

alte rn at el y melt the sold er at e ach le ad . Shi ft and remove

the chip p art.

SOLDE R

(2) Grasp th e ch ip p art with t w eez ers and p lac e it on th e

sol d er . Th en h eat and me lt th e s o ld er at b oth ends of the
chip part.

#

Transist ors, diodes , varia bl e resist or s, etc.

(1) Apply solder to the patt ern as indicate d in the fig ure.

(2) Grasp th e ch ip p art with t w eez ers and p lac e it on th e

solder.

(3) First s older lead A as indicated i n the fi gure.

A

B

C

(4) The n solder l e ads B and C .

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B

Note : After removing the part, remove remaining solder from

the p atte rn.

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SERVICE ADJUSTMENTS

/C

ADJUSTMENT PREPARATION

1. You ca n ma ke t h e nece ssa ry adjust ments f or this u nit wit h

either the Remote Control Unit or With the adjustment tools

and parts as given below.

2. Adjustment with the Remote Control Unit is made on the

basis of the initial setting values, however, the new setting
values which set the screen to its optimum condition may

differ f rom the initia l sett ings.

3. M ake sur e that AC p ower is turned o n c orrec tly.

4. T urn on th e pow er for s et an d test eq uip ment bef or e use , and

start t he adj ustmen t p r oced ures aft er waiting at leas t 30 m in ut es.

5. U nl ess o the rwise s pec if i ed, pr ep ar e t he mo st su itab le recep tion

or inp ut si gn al for adjust ment.

6. N ever tou ch any ad j ustm en t p arts wh ic h ar e n ot sp eci fi ed in t he
list for t his adjustment - variable resistors, transformers,

condensers, etc.

7. Pr es etti ng b efore adj ustm en t.

Unles s ot her wis e spec if i ed i n t he a dj ustm e nt i nstr uct ions, p r eset

th e f ollo wing f uncti ons with th e r e mo te c ont ro l un it :

VIDEO STAT US STA NDARD

TINT/COLOR

PICTURE/BRIGHT

DETAIL

V21BF10ENS

V21BF10EE

V21BF10EJS

V21BF10EP

CENTER

ADJUSTMENT EQUIPMENT

1. DC voltmeter (or digital voltmeter)

2. Si gn al g en er at or (P att ern g ener ator) ［PAL/SECAM/NTSC］

3. Remote control unit

MAIN PARTS LOCATIONS

REMO CON
RECEIVER

LE D

IC50 2

ME MO RY IC

ME NU

IC50 1

MI CO M

（＋）

（＋） （－）

（＋）（＋）

PROG

h.

（－）

（－）（－）

（＋）

（＋） （－）

（＋）（＋）

VOL

（－）

（－）（－）

MAIN POW ER SW

FBT

MULTI SOUND PWB

SCAR T

jack

TUNER AV-1 AV -2

SCAR T

jack

No. 51884

(Ind ic ated [1 50 /11 5V]

B1

on th e bott om s ide)

UPPER : FOCUS VR
LOWER : SCR EEN VR

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SERVICE MENU SCREEN

ADJUS

V21BF10EES
V21BF10EJS
V21BF10EPS

BASIC OPERATION SERVICE MENU

■■■■ HOW TO ENT ER THE SERVICE MODE

1) Press the INFORMATI ON key and MUTING key of REMOTE
CONTROL UNIT, simultaneously.

■■■■ SELECTION OF ADJUSTMENT ITEMS

1) Press the UP ( ) or DOWN ( ) key and select

th e se rvi ce menu item .

2) Press the LEFT ( ) or RIGHT ( ) key and

enter ADJUSTMENT SCREEN.

3) Se le ct t he AD JUST N o., use UP ( ) / DOWN ( )

key of r em ot e c ontr o l un it.

4) T o chan ge th e se lected par amet er, us e LEFT ( )

an d RIGHT ( ) key.

SE RVICE
ME NU ITEM

PA RAMET ER
VA LUE

SERVICE

ADJUST…..

OPT IO NS…..

ADJUST *** ******

** *

OU T UP

T No.

PA RAMET ER

■ HOW TO EXIT SERVICE MODE

1) Press the STANDARD Key on REMOTE CONTROL UNIT.

■■■■ ADJUS TMENT SERVICE MENU

ADJUSTMENT ITEM

AGC 03 AGC

IF-PLL NEGATIVE 04 IF-PLL Negative

IF-PLL PO SITIV E 05 IF -PLL P ositiv e

4 : 3 HORIZONTAL SHIFT

VERTICA L SLOPE

VERTICA L AMPLITU DE

ADJUST

No .

00 White Point RED

01 White Point GREENWHIT E BA LANCE

02 White Point BLUE

06 Y-Delay PAL

07 Y-Delay SECAMLUMINANCE DELAY

08 Y-Delay NTSC

12 4 : 3 PICT U RE MO DE

23 16 : 9 PICTURE MODE

13 4 : 3 PICT U RE MO DE

24 16 : 9 PICTURE MODE

14 4 : 3 PICT U RE MO DE

25 16 : 9 PICTURE MODE

DISCRIPTION

MUTING key

UP / DOWN

/

(

) key

ADJUSTMENT SCREEN

REMOTE CONTROL UNI T key NAME

STANDARD key

LEFT / RIGHT

/

(

) key

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INFORMATION
key

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ADJUSTMENTS

Item

SCREEN
VOLTAGE
adjust ment

Measuring

instrume nt

Signal
generator

Remote
control

unit

SERVICE

ADJUST…..

OPT IO NS…..

Test point Ad justment part Description

SE RVICE M ENU

SCREEN VR

[FBT]

OPTI ON 02

V21BF10ENS

V21BF10EE

V21BF10EJS

V21BF10EP

1. Receive a PA L co lour b ar.

2. En ter th e opt ion s etti n gs in th e SE RV ICE MEN U .

3. Press the UP / DOW N ( ▲/ ▼) key, and Enter Option 02.

4. To c h an ge bit 6, c om e o n t o it b y usi n g L / R (

make it “1 ” b y pres si n g “1” whit e b it 2 is b li nki ng .

5. Ob serve t he th in horizon tal blu e- white line in t he m i dd l e o f the

screen , and ad ju st t he SCR EEN V R of t he FBT , u ntil th e line is
in its thinnest visib le thickness.

6. The n m ake Op tion 02 b it 6 “ 0” , b y p re ss ing “ 0” on the re mo te
control unit, although you do not see any picture.

/

) key and

FOCUS
adjust ment

SELECT OP TION menu

FBT

FOCOUS

SCR EEN

Signal
generator

FOCUS VR

[FBT]

1. Receive a PA L cir cl e patt ern.

2. Ad just th e FOCUS VR of t he FBT , un til y ou get th e o pti m um

foc us, the sharp est picture.

B1
VOLTAGE
che ck

DC
voltmeter

Marked

[150/1 15V]

on the
MAIN PWB

No. 51884

1. Check whet her the vo ltag e at th e p oint n am ed an d s ilk
screen ed as “150 / 11 5V” o n the MAIN PWB is 150 V DC.

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V21BF10EJS
V21BF10EPS

Item

WHITE

BALANCE
adjust ment

AG C
adjust mentDCvoltmeter

Measuring

instrume nts

Signal

generator

Test point Adjustment part Descrip t io n

ADJUST 00

(White point

- RED

ADJUST 01

(White point

- GREEN

ADJUST 02

(White point

- BLUE

ADJUST 03 1. R eceive a any bro adc ast.

[LOW LIGHT]

1. Rec eive a wh ol e bl ac k signa l.

2. Adjus t th e <Ad just 00>, <Adju st 01 >, <A dj ust 02> , i n th e

SE RV ICE M EN U so that th e ent ire s creen do n ot s h i ne bl ack .

[HIG H LIGHT]

1. Rec eive a wh i te a nd bl ac k si gn al (col ou r off ).

2. Adjus t th e <Ad just 00>, <Adju st 01 >, <A dj ust 02> , i n th e

SE RV ICE M EN U s o th at th e whiten ess in t he sc re en bec om e
sharp.

2. Select < A DJ US T 03 > from S ERVICE MENU

3. C on nect a DC vo lt me ter to p in 1 of the tu ne r. Ch an ge the

AGC p ar am ete r unt il yo u s ee 3.7 0V DC on vol tm et er dis pla y.

IF-PLL

NE GA T IVE
adjus tment

IF-PLL
POS ITIVE
adjus tment

ADJUST 04 1. Select < A DJ US T 04 > from S ERVICE MENU.

2. Adjustm en t value is s et t o 8 0 as a def ault value.

ADJUST 05 1. Select < A DJ US T 05 > from S ERVICE MENU.

2. Adjustm en t value is s et t o 8 0 as a def ault value.

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Item

LUMINANCE

DE L AY

adjust ment

Measuring

instrume nts

Signal
generator

Test point Ad justment part Description

Adjust 06 [ Y- Delay P AL ]

1. Receive a PA L co lour bar si gn al .

2. Select <Adjust 06> from SERVICE ME NU.

3. Adjust Y-D el ay PAL till the colour transien ts on the colour

b ar of th e pa tter n beco me a s sh arper a nd col ou rs b etwe en
tr ansi e nts do no t mi x wit h each oth er as pos si bl e.

Note : If th e S AW fi lt er is one of th e G1 965M , J 1 95 1M , K295 8M,

K2 962 M, G395 7M, K 6256K , K6 259K or M1 96 3M, th ere i s
con stan t g roup de lay d is tortion , so for an equal d el ay of

th e l um ina nce and chromin ance si gn al th e d ela y mus t b e
set at a value of 160nS. This means the adjustment must

be set to the maximum value.

Adjust 07 [ Y- Delay SECAM ]

1. Receive a SE CAM colour bar si gn al .

2. Select <Adjust 07> from SERVICE ME NU.

3. Adjust Y-Del ay SECAM till t he col o ur tr an s ients on th e
col o ur b ar of th e p atter n b ec o me a s sh ar per an d c ol ou rs

b etw een t ransien ts d o n ot mix wi th eac h o the r as p oss ible .

Note : If t he SAW filter is one of th e G1 965 M, K 29 58M ,

K2 962 M, G395 7M, K62 56 K or K 62 59K , th er e is c on stan t
group d elay d ist or ti on , s o for an e qu al de lay of t he

lumi nan ce and chr omin anc e signal th e d el a y must b e
set at a valu e of 160 nS. This m ea ns th e adj u stment m ust

be set to the maximum value.

Adjust 08 [ Y- Delay NTSC ]

1. Receive a NT SC co lour b ar si gn al.

2. Select <Adjust 08> from SERVICE ME NU.

3. Adjust Y- Del ay NT SC t ill the col ou r tr ansie nts on th e co lour
b ar of th e pa tter n beco me a s sh arper a nd col ou rs b etwe en

tr ansi e nts do no t mi x wit h each oth er as pos si bl e.

Note : If th e SAW filt er is M1 963M , there is constant group delay

disto rt ion, so f or a n e qu al de l ay of th e l u min anc e an d
chr o mi n ance si gn al th e d elay mu st b e s et a t a val u e of

16 0ns . This me an s th e ad ju stment m ust b e set t o the
maximum value.

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Item

4 : 3
HORIZONTAL

SHIFT
Ad j ust men t

VERTICAL

SLO PE
Ad j ust men t

Measuring

instrume nts

Signal
generator

Signal

generator

Test point Ad justment part Description

Ad ju st 12 ( 4 : 3 )

Ad ju st 23 ( 16 : 9 )

Ad ju st 13 ( 4 : 3 )

Ad ju st 24 ( 16 : 9 )

1. Receive a RED t est pa ttern .

2. Se t < 4 : 3 as p ec t m od e >.

3. Select < ADJUST 12 > f rom S ERVICE MENU.

4. Change horizontal shift till the picture is horizontally

cen tered. C h eck w het her t his ad j ustmen t i s cor r ect after
com pl e ti ng Ser vice Mo de Ad ju stm en t.

5. Se t < 16 : 9 a sp e ct mo de >.

6. Ad justs with the step wh ic h i s t he sa me ab ove fro m 3 t o 4

ab out the 1 6 : 9 asp ect m od e, too.

1. Recei ve a cross-hatch si gna l .

2. Se t < 4 : 3 as p ec t m od e >.

3. Select < ADJUST 13 > f rom S ERVICE MENU.

4. Cha nge ve rt ic al sl op e t ill the si ze of squ ares on b oth t he
up per a nd l o we r part of tes t p att er n bec ome e qu al t o th e

squ ar es layi n g on the ver ti cal ce nter of th e te st pa tte rn.
Check and readjust VERTICAL SLOPE item if the

ad justm en t b ecomes i mpro per af ter s o me ot her geo metr ic
adjustments are done.

5. Se t < 16 : 9 a sp e ct mo de >.

6. Ad justs with the step wh ic h i s t he sa me ab ove fro m 3 t o 4

ab out the 1 6 : 9 asp ect m od e, too.

VERTICAL
AMPLIT UDE

Ad j ust men t

Signal

generator

Ad ju st 14 ( 4 : 3 )

Ad ju st 25 ( 16 : 9 )

1. Receive a PA L tes t patt ern sign al.

2. Se t < 4 : 3 as p ec t m od e >.

3. Select < ADJUST 14 > f rom S ERVICE MENU.

4. Cha nge ver ti cal s lo pe till ho rizo ntal bl ack l i nes o n bo th th e
up per an d lower par t of th e test p att ern bec om e v ery c lose

to th e u ppe r and lowe r horizonta l sid es of pict ur e tub e an d
n early ab out t o d is app ea r. Chec k and read just V ERTICAL

AMPL IT UDE item if t he adju stment be comes improper af ter
som e other geom et ric adjus tments are d on e.

5. Se t < 16 : 9 a sp e ct mo de >.

6. Ad justs with the step wh ic h i s t he sa me ab ove fro m 3 t o 4

ab out the 1 6 : 9 asp ect m od e, too.

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Item

S-CORRECTION

Ad j ust men t

VERTICAL
SHIFT
Ad j ust men t

Measuring

instrume nt

Signal
generator

Signal
generator

Test point Ad justment part Description

Ad ju st 15 ( 4 : 3 )

Ad ju st 26 ( 16 : 9 )

Ad ju st 16 ( 4 : 3 )

Ad ju st 27 ( 16 : 9 )

1. Receive a PAL circ le p att ern signal.

2. Se t < 4 : 3 as p ec t m od e >.

3. Select < ADJUST 15 > f rom S ERVICE MENU.

4. Change S-correction till the middle part of the circle is round

as possi b le .

5. Se t < 16 : 9 a sp e ct mo de >.

6. Adjusts with the step which is the same above from 3 to 4

ab out the 1 6 : 9 asp ect m od e, too.

1. Receive a PA L tes t patt ern si gn al ( o r the sym me tr ic al sign al
in the top and the bottom and on either side to find ).

2. Se t < 4 : 3 as p ec t m od e >.

3. Select < ADJUST 15 > f rom S ERVICE MENU.

4. Cha nge Ve rtic al Sh if t til l t he tes t pattern is vertical ly cent er ed ,
i.e. hor i zon tal line at the c e nte r patt er n i s in equal dist an ce

b oth to upp er and lower side of t he pi ct ur e tub e. Ch eck an d
readjust V ertical S hi ft ite m if t he adj u s tm ent bec om es

impr oper aft er s om e oth er g eom et ric a djust ments are d on e.

5. Se t < 16 : 9 a sp e ct mo de >.

6. Ad justs with the s te p w hi ch is the s a me ab ov e fr om 3 to 4
ab out the 1 6 : 9 asp ect m od e, too.

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[MEMO]

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