500mVrms ( -4dBs ), High Impedanc e (RCA pin jack) [AV-27330/S,R AV-27S33/S,R]
Low impedance (400Hz when modulated 100%) (RCA pin jack)
RM-C 25 5 (AA /R6/U M- 3 b attery×2) [AV-27330/S,R A V-27S3 3/S ,R]
p-p
(bu rst si gnal, when t erminated wi th 75Ω)
De sign & speci f icatio ns ar e su bje ct to cha ng e wi thout no t ice.
2
No.51937
A
A
A
SAFETY PRECAUTIONS
V-27320
V-27330
V-27S33
1. The d esign of t hi s p rodu ct c ont ai ns spec i al h ardw ar e, man y
ci rcu its and c o mp on ent s s pecially for s af ety pur p oses. F or
continued protection, no changes should be made to the
origina l des ign u nless a uth ori zed in wri ting by t he man ufactu re r.
Replacem en t parts must be id ent ic al t o thos e u sed in the
origina l c ircui t s. S ervic e sho uld be per f or med b y qu al i fied
p ers onnel o nly.
2. Al te rati on s of th e des ig n o r circu i tr y of the produ cts s houl d n ot
b e m ad e. A ny de si gn al te rations or ad ditio ns will vo id th e
manufacturer's warranty and will further relieve t he
manu fact ur er of resp ons ib i lit y f or pe rs ona l in jury or p r ope rt y
d am age r es u lt in g t heref rom .
3. M an y electrical an d m ec h an ic al pa rt s in th e p rodu cts h ave
sp ecial saf ety-relat ed c haract eris tics. Th ese charac teri stics ar e
oft en not e vid en t from visu al in s pe cti on no r can t he prote c ti on
aff orde d by th em n eces s ar ily be obtained b y usi ng
replac ement compon ent s rated for h igher voltag e, w a ttag e, etc.
Replacem en t pa rt s wh ic h h ave t hes e s p ec ial s afet y
ch aracteristic s a re i d enti fie d in th e par ts list of S ervi ce m an ual.
Electrical components ha ving such featur es are identified
by shading on the schematics and by (!!!!) on the parts list
in S erv ice manual. Th e use of a su bst itu te re plac emen t whi c h
does not have the same saf et y characterist ics as the
reco mmen de d replac em en t pa rt sho wn i n the pa rts l i st of
Se rvi c e ma nu al may c aus e shock , f ire, or o ther haz ards.
4. U se isola tio n tr ansforme r when hot ch ass is .
The chassis and any sub-chassis contained in some products
are c onnect ed to on e si de of th e AC p ower line . An is ol a ti on
tr ansf or m er of ad equ ate cap acity s h ou ld be ins er t ed bet we en
th e p rodu ct and t he AC p ow er su pp l y p oint w hi l e p er forming
an y ser vice on so me pr o ducts wh en th e HOT ch assis i s
exp ose d.
5. Don't short between the LIVE side ground and I SOLATED
(NEUTRAL) side ground or EARTH s ide ground when
repairing.
So m e mod el 's power c ircuit is par t ly dif feren t in the GND. Th e
diff er enc e of t he GND i s sh own by th e LI VE : (") side GND,
th e ISO LATED(N EU TRA L) : (#) sid e GN D an d EARTH : ( $)
si de GND. Don 't s ho rt betw ee n t he LIVE sid e GND a nd
ISO LATE D(N EUTR AL) si de GN D or EAR TH side GND a nd
never mea sure with a meas uring apparatus (oscilloscope etc.)
th e LI VE side GND a nd ISO LATED ( NEUT RAL) sid e G ND or
EARTH side GND at the s ame time.
If above note will not be kept, a fuse or any parts will be broken.
6. If any re pa ir h as bee n m ad e to the ch assi s, i t i s re commend ed
th at t he B1 se tti n g s h ou ld b e chec ked or ad j us te d (S ee
ADJUSTM ENT OF B 1 POW ER SUPPLY).
7. The hig h volt ag e app lied t o the pictu re tu be mu st co nfo rm with
that specified in Service manual. Excessive high voltage can
cau se an incr ea se i n X-R a y emi s sion , a rci n g and p ossi bl e
com po nent d am ag e, th er ef or e op er atio n un der excess iv e high
vol ta ge c ondit i ons s h ou ld be k e pt to a m in i mu m, or sh ou l d be
preve nt ed. I f seve re arc ing occ u rs, r em ov e th e AC p ower
immediately and determine the cause by visual inspection
(incor r ect i nsta lla ti on , cr ac ked o r melte d hi gh v oltag e h arness,
p oor s olderin g, etc. ). T o ma in ta in the pr op er m i ni m um le vel of
soft X-Ray emission, components in the high voltage circuitry
incl ud i ng the pi ctu r e tu be mu st be the exa ct r ep l acemen ts or
alte rn at ives a ppro ved b y the manuf actu r er of th e co mp l ete
prod uct.
8. Do n ot c hec k high vol ta ge by d rawin g a n arc. U s e a hi gh
vol ta ge mete r or a hi gh volt age pro be w i th a VTVM. Dis char ge
th e p ictu r e tu be bef ore a tte mpting me ter c o nne c ti on , b y
con nec ting a c l ip lead t o th e gr ou nd frame a nd con n ecti ng the
oth er e nd of t he lead th roug h a 10k Ω 2W resi st or to t he anode
bu tton.
9. W hen s e rvic e i s r equ i r ed, ob ser v e th e o ri g in al l ea d dr ess.
Extra p r ecau ti on sh ou l d be gi v en to assu r e correct lea d dres s
in the hi gh volta ge c ircu it ar ea . W her e a sh ort cir cuit ha s
occu rr e d, th ose c ompon en ts th at ind ic ate eviden ce of
overheating should be replaced. Always use the
manu fact ur er 's r eplace ment comp on ents.
10 . Isolation Check
(Safety for Electrical Shock Hazard)
Af ter re-a ssem bl i ng th e prod uct , always pe rf orm an iso lati on
ch eck on th e expo sed m eta l p ar ts of th e c abin et (ant en na
ter m i na ls, vi de o/a ud i o in pu t and out put ter mi n al s, C on trol
knobs, metal cabinet, screwheads, earphone jack, control
sh afts, etc .) to be s ur e the pr o duct is saf e t o op erat e w i th out
d ang er of elect ri cal shoc k.
(1) Dielectric Strength Test
The is olat io n b etwe en the AC prima ry circu it and al l m eta l par ts
exp osed t o the us er, par t icu lar l y an y expo sed m etal p art h aving
a re tur n pat h to the ch as sis sh ou ld w ithst and a vol ta ge of
11 00V AC (r .m .s .) for a per i od of on e sec ond.
(. . . . Withstand a voltage of 1100 V A C (r.m.s.) to an applian ce
rate d up to 1 20V , and 3 00 0V AC ( r.m. s.) t o an ap plianc e ra ted
200V or more, for a period of one second.)
Thi s m eth od of tes t r e qu ires a t est eq uip ment n ot g en er al l y
fou nd in t he servi ce t ra de.
(2) Leakage Current Check
Plug t he A C li ne c or d di r ect ly i nt o th e AC ou tlet ( do not u se a
line is olati on tra nsf ormer dur i ng thi s che ck.). Usi ng a " L eakage
Current Test er", mea sure t he l ea k ag e c ur r en t fr om each
exp ose d m eta l part of th e ca bi ne t, p ar tic ul ar ly an y expo sed
metal part having a retu r n path to t he ch assis, to a known good
ea rt h gr o und (water p i pe, etc.) . A ny l ea kag e curren t m us t not
exce ed 0.5m A AC ( r .m. s.) .
Howev e r, in t ropical a rea, thi s must no t e xceed 0 .2mA AC
(r.m.s.).
"""" Alte rn at e Che ck M et hod
Plug t he A C li ne c or d di r ect ly i nt o th e AC ou tlet ( do not u se a
line isolation transformer during this check.). Use an AC
vol tm et er h aving 100 0 o hms per volt or m or e sen si ti v it y in the
follo win g manne r. Con nec t a 150 0Ω 1 0W resi s tor pa rall e l ed
by a 0.15μ F AC-typ e cap acitor b etw e en an exp ose d m eta l
p art and a kno wn g o od earth gr ou nd ( w ate r pip e, et c.).
Measu re th e A C voltag e acr oss th e r esis t or w it h t he AC
voltmeter. Move the res istor connection to each exposed m etal
part, particularly any exposed metal part having a return path to
th e ch assis , an d m ea sur e t he A C vol ta ge acr oss th e resi sto r.
Now, reve rs e th e plu g in t he A C out let a nd r ep eat e ac h
measu rem en t. An y volta ge meas u re d m us t not exce ed 0.7 5V
AC (r.m. s.) . This corresp onds t o 0.5mA AC (r.m. s.) .
Howev e r, i n trop ic al ar ea, thi s must not ex cee d 0 .3V AC
(r.m.s.). This corr esp onds t o 0.2mA A C (r .m .s.) .
AC VOLT METER
(HAVING 1000 Ω/V,
GOOD
EARTH
GR OUND
11 . High voltage hold down circuit check.
Af ter rep ai r of th e hi gh volt ag e h old d ow n c ircui t, th is circu i t
sh all be c hecked to op er ate correctly .
See item "Ho w to check the high voltage hold downcir cuit".
This mark shows a fas t
operating fuse, the
letters indi cated below
show the rating.
0.15μF AC-T YPE
1500Ω 10W
OR MOR E SENSIT IVITY)
PLACE THIS PROBE
ON E A C H EX PO SE D
ME T AL PA RT
A V
No. 51937
3
A
V-27320
A
A
V-27330
V-27S33
FEATURES
New chas sis design en abl es use of a si ngl e boar d with si mp lif ied
"
circuit ry.
User s can m ak e fun to c onnect th e Digi tal Video Disk pl ayer wit h
"
the component vi deo signal i npu t termi nal .
Provid ed w ith mi niatu re tuner ( TV/CATV ).
"
Multif unct ion al remote con tro l p erm its pictu re adj ustm ent.
"
Ad opti on of the CHANNEL GU AR D fu nction pr events th e speci fi c
"
chan nels from being selec ted, unless th e “ID nu mbe r” is k ey in .
2
"
I
C bus control utilizes single chip I Cs.
"
Adoption of the VIDEO STATUS f unc tion.
"
Adoption of the ON/OFF TIMER fun ction.
Built-in V-CHIP system.
"
With 75ΩV/U in c omm on ( F-Type) ANT Ter m in al.
"
SLEEP TIMER for setting in re al time.
"
"
Clos ed-caption b roa dcasts can be viewed.
"
Bu ilt - in MTS sys tem.
"
Built-in HYPER-SU RROUND system.
S-VID EO input termi nal for taki ng bes t advantag e of S uper VH S .
"
Variable Au di o outp ut terminal.
"
3 L IN E D i gi tal Comb f ilter Im proved pi ctu re q ual ity.
"
HOW TO IDENTIFY MODELS
The differenc e between AV -27 320 /S and AV -2 732 0/R i s in th e PICT U R E TUBE.
As t he res ult of the diffe ren ce in pic tu re tube, the MAIN PW B al so dif fer s.
In the sam e w ay, the d if ference between 2 7330/S and A V- 27330/R ,2 7S3 3/S and 27S3 3/R i s in the PICT URE TUBE t oo.
!
Parts na me
MODEL
AV-27320 /S
AV-2733 0/S
AV -2 7S3 3/S
AV-27320 /R
AV-2733 0/R
AV -2 7S3 3/R
!RAT ING L ABELLC31 139 -001A-A←←←←
Ind icat ed AV -27 230
or AV-27 330
or AV-27S33
Indic ated “S”
Ind icat ed AV -27 230
or AV-27 330
or AV-27S33
Indic ated “R”
4
No.51937
A
A
A
MAIN DIFFERENCE LIST
V-27320
V-27330
V-27S33
!!!!
Parts Name
MAIN PW BSFE-10 06A -M2SFE-10 07A -M2
!
ITC TU BEA6 8QD N 891 X001A6 8ADT 25 X01
!
POW ER KN OBLC30376 -0 01A- A
!
PUSH KNOBLC30271 -0 01A- A
!
REAR COVE RLC10082 -0 04A- A
!
FR ONT CA BINETLC10 081 -0 05B- A
JVC M AR KCM48006-0 06- C
REMOTE CONTROL UNITRM-C205-1C
!!!!
Parts Name
MAIN PW BSFE-10 04A -M2SFE-10 05A -M2
!
ITC TU BEA6 8QD N 891 X001A6 8ADT 25 X01
!
POW ER KN OBLC30376 -0 01A- A
!
PUSH KNOBLC30271 -0 01A- A
!
REAR COVE RLC10082 -0 03A- A
!
FR ONT CA BINETLC10 081 -0 04B- A
Model name
Model name
AV-2 7320/SAV-2 7320/R
AV-2 7330
/S
AV-2 7330
/R
JVC M AR KCM48006-0 06- C
REMOTE CONTROL UNITRM-C255-1H
!!!!
Parts Name
MAIN PW BSFE-10 04A -M2SFE-10 05A -M2
!
ITC TU BEA6 8QD N 891 X001A6 8ADT 25 X01
!
POW ER KN OBLC30376 -0 04A- A
!
PUSH KNOBLC30271 -0 04A- A
!
REAR COVE RLC10082 -0 03A- A
!
FR ONT CA BINETLC10 081 -0 08A- A
JVC M AR KCM48006-0 07- C
REMOTE CONTROL UNITRM-C255-1H
Model name
AV -2 7S 3 3/SAV -2 7S 3 3/R
No.51937
5
A
V-27320
A
A
V-27330
V-27S33
FUNCTIONS
■■■■
FRONT PANEL CONTROL
2
1
36
58
4
7
INPUT2 VIDEO terminal [AV-2 7320/S,R]
1
INPUT3 VIDEO terminal [AV-2 7330/S,R AV-27S33/S,R]
INPUT2 AUDIO L MONO ter minal [AV-27320/S,R]
2
INPUT3 AUDIO L MONO ter minal [AV-27330/S,R AV-27S33/S,R]
INPUT2 AUDIO R ter mi nal [AV-27320/S,R]
3
INPUT3 AUDIO R ter mi nal [AV-27330/S,R AV-2 7S33/S,R]
4
MENU button POW ER button
■■■■
REAR TERMINAL
[[[[
AV-27320/S,R]
CHANNEL -/+ buttons
5
OPERATE / buttons
6
VOLUME
7
ON TIMER LED
8
[[[[ AV-27330/S,R AV-27S33/S,R]
-/+
buttons
1
AUD I O O UTPUT (L, R) t erminals
1
INPUT1 (S,V/Y, PR, PB, L, R) terminals
2
VHF / UHF ter minal
3
2
6
3
No.51937
1
2
3
4
12
AUD IO O UTPUT (L, R)t erm ina ls
INPUT1 (S, V, L, R) terminals
INPUT2 (V/Y, PR, PB, L, R) terminals
VHF / UH F te rminal
3
4
A
A
A
■
REMOTE CONTROL UNIT
[RM-C205] AV-27320/S,R
1
2
3
4
V-27320
V-27330
V-27S33
11
1
5
6
7
8
9
10
12
VI DEO STATUS key
DISPLAY key
2
MUTING key
3
MENU key
4
5
POWER key
INPUT key
6
CHANNEL keys
7
V-CHIP key
8
FU NCTI ON ( ▼/ ▲, / ) Keys
9
EXIT key
10
SLEEP TIMER key
11
VCR CONTROL keys
12
[RM-C2 5 5] AV-27330/S,R AV-2 7S33/ S,R
15
16
1
2
3
4
5
6
7
8
INPUT key
1
DISPLAY key
2
3
SLEEP TIMER key
HYPER SUR. key
9
10
11
12
13
14
4
VIDEO STATUS key
5
6
MUTING key
7
FUNCTION (VOL-/+, / )keys
MENU key
8
POWER key
9
CHANNEL keys
10
V-CHIP key
11
FUNC TI ON ( CH-/ +, ▼/ ▲) keys
12
EXIT / PIP OFF key
13
VCR CONTROL keys
14
15
VCR / DVD switch
TV / CATV switch
16
The CH-/+ and VOL-/+ keys ope rate CHANNEL
and VOL UM E n orm al ly.
Thes e keys are also used to na vigate MEN U
system.
No.51937
7
A
V-27320
A
A
V-27330
V-27S33
SPECIFIC SERVICE INSTRUCTIONS
DISASSEMBLY PROCEDURE
REMOVING THE REAR COVER
1. Disc onnec t t he po wer plu g f ro m wa ll out le t.
2. As s hown i n th e Fig.1, rem o ve the 7 screws marked
[For AV -2 73 20/ S,R]
3. As s hown i n Fig.1 , r emo ve t he 3 screws marked
[For AV -2 73 30/ S,R AV- 2 7S3 3/S ,R]
3. As sh own in Fig.1 , r emov e the 4 screws marked
4. Then remo ve th e REAR COVER toward you .
""""
""""
!!!!
.
.
.
REMOVING THE MAIN PWB
"
After r emovi ng the REAR COV ER.
1. Pick th is s ide of the MA IN PWB an d r ai se on e slig htly, take of f the
PW B stopp er mar ked #
2. W i thdr a w t he chass is backw a rd .
(If n ecess ary , r em ov e t he w ire clamp, c onnec t ors etc.)
# f rom th e cabin et b ott om .
##
REMOVING THE SPEAKER
" After removing the rear cover.
1. As shown in Fig. 1, removing the screws marked
remove the speaker.
2. Foll ow the s ame st eps wh en removi ng the oth er ha nd speak er.
NOTE : When removing the screws marked
remove th e lower si de scr ew fir s t, an d th en rem ov e the
up per one .
$$$$
$$$$
, then
of th e sp eak er ,
CHECKIN G THE PW BOARD
To check the PW Board from back side.
1. Pull out the ch assis ( refer t o REM OVI NG THE MAIN PWB ).
2. Erect th e chas sis ver ti c a lly s o th at you c an ea s i ly ch eck th e bac k
si de of the PW Boar d.
CAUTION
"
When e recti ng th e ch assi s, b e c ar ef ul so tha t th ere w ill b e no
contacting with other PW Board.
"
Befor e tu rni ng o n p ower, m ake s ure th at t he wire con nec tor is
prop er l y c on nec ted .
"
When conducting a check with power supplied, be sure to
confirm that the CRT EART H WIRE (BRAIDED ASS’’’’ Y) is
connec ted to the CRT SOCKET PW boar d.
WIRE CLAMPIN G AND CABLE TYING
1. Be sure t o clamp th e wir e.
2. Never remove the c able tie used for tyi ng the wires to gether.
Should it be inadverte ntly removed, b e sur e to tie the wir es with a
new cable tie.
8
No.51937
A
A
A
FRONT CABINET
CRT
CRT SOCKET PWB
SP EAKER
V-27320
V-27330
V-27S33
Thi s exp lode d vi ew des cr ibe s ab out th e
AV -2 73 30/S,R a nd AV-2 7S33/S ,R .
Alth ou gh t he AV-27 32 0/S ,R i s sl i g htly
diff er ent f r om th is fi gu re, you c an u s e th e
exp lode d vie w f or d is assem b lin g t he AV27 32 0/S, R i n th e sam e s t ep as f or thi s
on e.
MAIN PWB
REAR COVER
SP EAKER
$$$$
$$$$
HV T
####
PWB STOP PER
""""
!!!!
POWER CORD
Fig .1
No.51937
9
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