JVC AV-21BF11ENS User manual

No.52055
AV-21BF11ENS
AV-21BF11EE
S
AV-21BF11EP
S
AV-21BF11EJ
S
1COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD.
Jul. 2002
AV-21BF11ENS
AV-21BF11EES
AV-21BF11EPS
AV-21BF11EJS
CONTENTS
!SPECIFICATIONS ････････････････････
････････････････････････････････････････
････････････････････2
!SAFETY PRECAUT IONS ･･････････････
････････････････････････････
･･････････････4
!FEATURES･･････････････････････････
････････････････････････････････････････････････････
･･････････････････････････ 5
!MAIN DIFFERENCE LIST ･･････････････
････････････････････････････
･･････････････5
!SPECIFIC SERVICE INSTRUCTIONS ････
････････
････ 6
!SERVICE ADJUSTMENTS････････････
････････････････････････
････････････ 11
!PARTS LIST ･･･････････････････････
･･････････････････････････････････････････････
･･･････････････････････ 21
★
OPERATING INSTRUCTIONS
★
STANDARD CIRCUIT DIAGRAM ･･･････
･･････････････
･･･････ 2- 1
SERVICE MANUAL
COLOUR TELEVISION

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SPECIFICATIONS
Content
Item AV-21BF11ENS AV-21BF11EES AV-21BF11EPS AV-21BF11EJS
Dimensions ( W×
××
×H×
××
×D ) 60 0m m×4 48m m×4 76m m
Mass 22 .2 kg
TV RF System B/G B/G , D/K , K1 B/G , L/L’ I/I ’
TV Mode PAL PAL / SECAM PAL / SECAM PA LColour Sy stem
Video Mode PAL / SECAM / NTSC 3.58 / NTSC 4 .43 (EES/E PS MODEL)
PAL / NTSC 3.58 / NTSC 4.43 (ENS/EJS MODEL)
Sound System German + NICAM
Teletext System Fast ext / Topte xt
Receiving Frequency
VHF(VL) 46 .25 MHz ～1 68. 25 MHz
(VH) 17 5.2 5MHz ～46 3.2 5MHz
UHF 47 1.2 5MHz ～86 3.2 5MH z
CATV S01-S41 & S75-S79
Intermediate Frequency
VIF Carrier 38.9 MHz (B/G , D/K , L , I ) / 33.9MHz(L’)
SIF Car rier 33. 4MHz ( 5.5MHz:B/G) / 32. 9MHz (6 .0MHz:D/ K , I ) / 32 .4MHz (6. 5MHz: L) / 40 .4MHz (6 .5MHz:L’)
Colour Sub Carrier Freq.
PAL 4.43MHz
SE CAM 4.43MHz
NT SC 3.58MHz / 4.43MHz
Power Input AC 2 20V ～240V , 50Hz
Power Consumption 85W(Max) ,2 .5W(Standby)
Aerial Input Term 75 Ωun ba lanc ed, C oaxial
Picture Tube Size Vi si ble si ze : 5 1cm , M eas ur ed di a gon all y
Hi g h Vo lt age 27 .7 kV
Spe ake r 5.7 cm ×16cm Oval type×2
Au dio Output 6.5 W ×2
Vide o 1V p- p, 75 Ω
S/V ideo Y : 1Vp- p Po sit i ve
C : 0 .2 86V p- p
Input
Au di o ( L/ R) 50 0mVr ms, H igh Imp ed an ce
Vide o 1V p- p 7 5Ω
Output
Au di o ( L/ R) 50 0mVr ms, Lo w Impe da nce
Rear Side AV 1 ( Vi d eo/A ud i o/RGB)
AV 2 (Vid eo/A ud io/S- VHS)
Input Terminal
Front Side AV 3 ( Vid eo/A ud io)
Front Side Hea dph on e j ac k (S ter e o m ini jack 3.5 φ)Output Ter minal
Rear Side AV 1 ( Vi d eo/A ud i o)
AV 2 ( Vid eo/A ud io) (S elect ed TV,A V1 or AV 3)
Remote Control Unit VE -3 00 177 63 (RM- C 11 00) , (A A/R0 6 d ry b at tery×2)
Design & speci ficatio ns ar e su bje ct to cha nge wi thou t notice.

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■
■■
■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 No. Signal Designation Matching Value AV-1 AV - 2
22
2
1AU DIO R o ut put 50 0m Vrms( Nom ina l) ,
Low impedance
○
(TV OUT)
○
2AU DIO R in put 50 0m Vrms( Nom ina l) ,
Hig h i mpe da nce ○○
3AU DIO L o utp ut 50 0m Vrms( Nom ina l) ,
Low impedance
○
(TV OUT)
○
4AUDIO G ND ○○
5 GND (B) ○○
6AUDIO L input 500mVrms(Nominal),
Hig h i mpe da nce ○○
7B in put 70 0m VB- W , 75Ω○NC
8FUNCTION SW
(SLOW SW)
Low : 0-3V, High : 8-12V, High
impedance ○○
9 GND (G) ○○
10 SCL3 NC NC
11 G in put 70 0m VB- W , 75Ω○
NC
12 SDA3 NC NC
13 GND (R) ○○
14 GND (YS)○○
15
R / C input R : 700mVB- W , 75Ω
C : 300mVP- P , 75Ω
○
(only R)
○
16 Ys input Low : 0 - 0.4, High : 1 - 3V, 75Ω○ NC
17 GND(VIDEO output) ○○
18 GND(VIDEO input) ○○
19 VIDEO output 1V P- P( Nega tive g oin g sync ), 75 Ω○
(TV)
○
20 VIDEO / Y input 1V P- P(N ega tive g oi n g sync ), 75 Ω○ ○
21 COMMON G ND ○○
[Pin assignment]

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SAFETY PRECAUTIONS
1. The d esi gn of th is prod uct con ta in s sp ecial har d wa re , ma ny
circuits and components specially for saf ety purposes. For
con tinu ed prot ection , n o chan g es sh ou ld b e ma de to the o ri g inal
d esi gn un less a uth or ized in writin g by th e ma nu fact ur er.
Rep lacem en t p ar ts m ust b e i d ent ic al to thos e u sed in th e or igi n al
ci rcu it s. Se r vic e sh ou ld be pe rf or me d b y q ua li fie d per so nn el
on ly.
2. Al te r ati on s of t he desig n or cir cuitr y of t he pr od ucts sh oul d not be
made. Any design alterations or additions will void the
m anu fact ur er's w arr a nt y and wi ll f ur th er r elieve t he ma nu factu r er
of r esp onsi b ili ty for per so na l injur y or p r op erty d am ag e r esul t in g
th er efr om .
3. M an y e lectr ical an d m ech anica l p ar ts in th e prod ucts ha ve
special safety-related characteristics. T hese characteristics are
oft en no t e viden t f r om visua l insp ection n or ca n t he pro tect io n
aff or de d by th em nece ssar il y b e ob tain ed b y u sin g rep lacem en t
com po ne nts ra ted f or hig he r vo ltag e, watt ag e, etc. R ep lacem en t
p arts wh ic h ha ve th ese sp eci al s afet y ch ar act er ist ics ar e
identified in the parts list of Servic e manual. El ec tric al
components having su ch features ar e identified by shading
on the sche matic s and by (!
!!
!) on the parts list in Service
manual. The us e of a sub sti tu te rep la cem en t which do es n ot
h ave th e sam e saf ety ch ar act er ist ics as t he r eco mm en de d
r eplac ement par t sh own in th e p arts li st of S er vice man ual m ay
cause shock, fire, or other hazards .
4. Do n't shor t between the LIVE side ground and ISOL ATED
(NEUTRAL) side ground or EARTH side ground when
repairing.
Some model's power circuit is partly different in the GND. The
diff erenc e of th e GND is sh own by t he LI VE : (") side GND, the
ISO LATE D(NEUTRAL) : (#) side GND an d EA RTH : ($) side
GND. Don't short between the LIVE side GND and
ISO LATE D(NEUTRAL) side GND or EARTH side GND and
n ever m ea sure wit h a m ea sur ing a ppa r atus ( osci llo scop e etc.)
th e LI VE sid e GN D an d IS OL ATED( NE UTR AL ) sid e GND or
EARTH side GND at the s ame 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 shou l d b e ch ecke d or adju ste d ( Se e
ADJU STMENT OF B 1 POW E R SUPPL Y).
6. The hi gh vol ta ge app lie d t o th e pictu r e tu be mu st con for m wi t h
th at sp eci fied i n S er vi ce m an ual. E xcessive h igh vo lt ag e ca n
cau se an incr e ase in X- Ray emi ssi on , ar ci ng 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 evere arc ing occurs, r emove t he AC power
immed iate ly an d de ter mi ne th e ca use b y visua l insp ect io n
( in cor rect in stal lat i on, cr acke d or m elte d high vo lt age har n ess,
p oor so ld er ing, et c.). To m aint ai n the p r ope r min imu m le vel of
sof t X- Ray em ission, c omp on en ts in th e high voltag e ci rcui tr y
incl ud ing t he pict ur e tu be must b e t he e xact r ep lacem e nts or
alte rn at ives ap prove d b y th e ma nuf act ur er of th e c ompl et e
pr od uct.
7. Do n ot c hec k high volt ag e b y drawing an arc. Use a high volt ag e
meter or a hig h v oltag e prob e wit h a VTV M. Dis char ge the
picture tube before attempting meter connection, by connecting
a cli p le ad to th e grou nd f ra me a nd c onn ectin g th e oth er end of
the lead through a 10kΩ2W resisto r to the an od e b utt on .
8. W hen se r vi ce is r equ ire d, ob ser ve th e origi na l lea d dress. E xtr a
pr ec aut i on sh ou ld b e g i ve n t o assur e cor rect lea d dr ess in th e
hig h voltag e cir cuit a r ea. W her e a s hort ci rcui t h as occu rre d,
th ose co mp on ent s tha t i ndica te evide nce of ove r hea ting sho uld
b e r e place d. A lwa ys u se th e ma nuf act ur er 's rep l acemen t
components.
9. Isolation Check
(Safety for Electrical Shock Hazard)
Af ter r e-ass emb l in g th e p rodu ct, always per f orm an i sol at io n
ch eck on the expo sed me tal p ar ts of t he cabi n et ( a nte nn a
ter m ina ls, vid eo /au dio inpu t and ou tpu t t er min al s, Con tr ol kn obs,
metal cabinet, screwheads, earphone jack , control shafts, etc.)
to be su re th e p r odu ct is s af e t o o pe r ate with ou t d an ger of
elect rical shoc k.
(1) Dielectric Strength Test
The iso l ati on be tw een the A C pr im a ry circu it an d all me tal p ar ts
exp ose d t o th e us er , p ar ti cular ly an y e xp os ed met al p art h aving a
r etu rn p ath to t he chass is sho ul d withs tan d a volt age of 3 000 V
AC (r.m.s.) for a period of one second.
( . . . . W it hstan d a vo lt ag e of 1 10 0V A C ( r.m. s.) t o an ap pl ianc e
r ate d up to 12 0V , an d 3 00 0V AC (r .m. s.) to an ap pli an ce rat ed
200V or more, for a periodof one second.)
This meth od of test requires a t est equipment not generally found
in t he servic e trade.
(2) Leakage Current Check
Pl ug th e A C lin e c ord d ir ect l y in to th e A C ou tlet ( d o n ot use a lin e
isol ati o n tr ansf or m er du r in g thi s ch eck.) . U sin g a " Lea kag e
Cur rent Teste r", me asur e th e lea kag e cu rr e nt f rom each exp osed
m etal p ar t of the ca bi ne t, p art icu lar ly any e xpos ed me tal p ar t
h aving a re tur n path to t he ch assis , t o a kn own go od ea rt h
gr ou nd (wa ter pi p e, e tc.) . An y leaka ge curr en t must n ot e xceed
0.5mA AC (r.m.s.).
Howeve r, in trop ic al area , th is mu st no t exce ed 0.2 mA AC
(r.m.s.).
"
""
"Alte rnat e Che ck Met hod
Pl ug th e A C lin e c ord d ir ect l y in to th e A C ou tlet ( d o n ot use a lin e
isol ati o n tr an sfor m er dur ing t hi s che ck.). U se an AC vo lt me ter
h avi ng 1 00 0 oh ms pe r vol t or mor e sens it i vi ty in th e fo llow ing
m ann er. C on nec t a 1 50 0Ω10W res ist or par a lle le d b y a 0 .1 5µF
AC -type c apa cit or bet we en an expo sed met al pa rt a nd a kno wn
g ood e ar th gro un d ( wa ter pi pe , etc.) . Meas ur e th e A C vo lt ag e
acr oss th e r es ist or with th e AC vo ltmeter . M ove th e r esi stor
con nec ti on to e ach exp ose d me tal par t, p art i cular ly a ny exp osed
m etal p ar t havin g a r etu rn pat h to t he ch assis, an d m easu r e th e
AC voltag e ac ro ss the r es ist or . No w , re ver se th e plu g in th e AC
ou tl et and r e pe at eac h m ea sur emen t. An y volt ag e me asu re d
must not exc eed 0.75V AC (r.m.s.). This c orresponds to 0.5mA
AC (r.m.s.).
However, in tropical are a, this must n ot exceed 0.3V AC ( r.m. s.).
This corresponds to 0.2mA AC (r.m.s.).
0.15μF AC-T YPE
1500 Ω10W
GOODEARTH GROUND
PLACE THIS PROBE
ON E A CH EX PO SE D
ME T AL PA R T
ACVOLTMETER
(HAVING 1000 Ω/V,
OR MOR E SENSIT IVITY)

No.52055
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FEATURES
1. It is a remote controlled color television.
2. 10 0 prog r ams fr om VHF, UHF b an ds or cab le ch ann els can be
pres et.
3. It c an tun e c able cha nn els.
4. Cont ro llin g th e TV is ver y easy by i ts m en u dr ive n s yst em .
5. It h as two Eu r ocon n ector s ockets fo r exte r nal de vice (such as
vi de o r eco rd er, vid eo ga mes , a udi o set, e tc.)
6. Fr ont AV In pu t ava i labl e.
7. St ereo s ou nd s ys tem s ( Ger man + Nic am) are a vailab le.
8. Full fu nctio n Tele text (Fast ext, Topte xt ).
9. It is possi b le to con nec t h ead ph on e.
10. Direct channel acc ess.
11 . AP S ( Aut om at ic P r ogr amm ing Syste m) .
12 . Al l pr og rams ca n b e nam ed .
13 . For war d o r bac kward au to ma tic tu ning .
14 . Sl ee p ti me r.
15. Child Lock
16 . Au tom at ic sou nd mu te wh en no tr an smissi on .
17 . 5 minu tes aft er the br o adc asti ng (closed ow n), the TV s witch es
itsel f aut om ati ca lly t o st and - by m od e.
MAIN DIFFERENCE LIST
!
!!
!
Model Name
Part Name
AV-2 1B F11ENS AV-2 1B F11EES AV-2 1B F11EPS AV-2 1B F11EJS
MAIN PWB VE-20101119 VE-20101113 VE-20101120 VE-20101540
!RATING LABEL VE-20101395 VE-20101660
VE-20101560 (POLAND) VE- 20101548 VE-20101872
CARTON BOX VE-50028254 VE-50028331 VE-50028286 VE-50028413
!INSTRUCTION BOOK VE-50028252 VE-50028323 VE-50028287 VE-50028290