(02~06) 54 MHz~88MHz
(07~13) 17 4M H z~ 21 6MH z
(14~69) 47 0M H z~ 80 6MH z
(02~06, A-8) by (02~06 &01)
(07~13) by (07~13)
(A~1) b y (14 ~22)
(J~W) by (23~36)
(W +1~W+ 28) b y (3 7~64 )
(W +29~W + 84) b y (65~1 25)
(A8, A4~A1) by (01, 96~99 )
18 0 Ch an nels
45 .75 MHz
41.25 MHz ( 4 .5MHz)
3.58MHz
Power Consumption87W
Pictur e Tube
Hi gh Vo l t ag e
Speake r
Audio Powe r Output1W1W1W+1W
Input
Video Input
Au dio Input
Au dio Output1550mVrms(-4dBs)
Headphone Jack
An ten na Ter mi nal
Remote Control UnitRM-C205
21 (51cm) Measured
Diag onal ly
26 .5kV ±1k V ( at zero b eam
current)
5×9cm
Ova l type×1
1V p- p, 75Ω ( RCA pin jac k)
50 0m Vr ms ( -4dB s ) , Hi gh
Im pe da nce (RCA p in jack )
3.5 mm mi n i j ac k
(Sou nd is mon aural)
75(VHF/UHF) Terminal, F-
Ty pe C on nect or
(AA/R6/UM-3 b atte ry×2)
5×9cm
Ova l type×2
Low impedance (400Hz
when m od ul at ed 10 0%
(RCA pi n ja ck)
3.5 m m st er eo min i jack
(Sou nd is ste re o)
2
No. 51991
A
3
SAFETY PRECAUTIONS
C-N21310
C-N21103
V-N2120
1. The d esign of t his p rodu ct c ont ains spec ial h ar dw ar e, man y
ci rcu its and c o mp on ent s s peci al l y for saf ety pur p oses. F or
continued protection, no changes should be made to the
origina l des ign u nless a uth or i zed in wri ting by t he man ufactu re r.
Replacem en t par ts m ust be id ent ic al t o t hos e used in th e
origina l circui t s. S er vic e s ho ul d be perf or me d b y qu ali fied
p ers onnel o nly.
2. Al te rati on s of th e des i g n o r circu itr y of the p rodu cts s hou ld n ot
b e m ad e. A ny de sign alte ra tions or ad di ti o ns will vo id th e
manufacturer's warranty and will further relieve the
manu fac t urer of resp ons ibi lit y f or pe rs ona l i n ju r y or p r ope rt y
d am age r esult ing t heref rom .
3. M an y e lectrical an d mec h an ic al pa rt s in th e produ cts h ave
sp ecial s af ety-r elat ed charact eris tic s. Th ese charac teri sti cs ar e
oft en not e vid en t fr om visu al in spe ction no r can t he prote cti on
aff orde d by th em n ecess ar ily be o bta ined b y usi ng
replac ement compon ent s rated for h ig her vo l tag e, wa ttage, etc.
Replacem en t pa rt s wh ic h h ave t hes e sp ec ial s afet y
ch aracter istics a re i d entifi e d in th e par ts l ist of S ervic e man ua l.
Electrical components having such features are identified
by shading on the schematics and by (!!!!) on the parts list
in S erv ice manual. Th e us e of a su bst itu te re plac emen t whic h
does not have the same saf ety characteristics as the
reco mmen ded replac emen t pa rt sho wn i n the pa rts lis t of
Se rvi c e ma nu al m ay c ause sh ock, f ire, or o th er haz ards.
4. U se isola tio n tr an sf orme r when hot c hass is .
The chassis and any sub-chassis con tained in s ome products
are c onnect ed to on e side of th e AC p ow er l i ne . An i sola ti on
tr ansf or m er of ad equ ate cap acity sh ould be inser t ed bet ween
th e p rodu ct and t he AC p ow er s u pp ly p oi nt while p er for m i ng
an y ser vice on so me pr oducts when th e H OT ch assis is
exp ose d.
5. Don't shor t between the LIVE side ground and I SOLATED
(NE UTRAL) side ground or EARTH side ground when
repairing.
So m e mod el 's p ow er c irc ui t is par t ly dif feren t in the GND. Th e
diff er enc e of t he GN D is s h ow n by th e LI VE : (") side GND,
th e ISO LAT ED(NEU TRAL) : (#) side GND an d EAR T H : ( $)
si de GND. Don 't sho rt be tw ee n t he LIVE s id e GN D a nd
ISO LATE D(N EU TR AL) si de GN D or EART H si de GN D and
never measure with a measuring apparatus (oscilloscope etc.)
th e LI VE s ide GND a nd ISO LATED( N EUTRA L) si d e G ND or
EARTH sid e 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 b ee n mad e to th e c h assi s , i t i s re c om m end ed
th at t he B1 se tti n g s h ou ld b e chec ked or ad jus te d (S ee
ADJUSTM ENT OF B 1 POW E R SUPPLY).
7. The hi g h v olt age a pplied t o the pictu re tu be mu st co nform wi th
that specified in Service manual. Excessive high voltage can
cau se an incr ease i n X-R a y emission , arcin g and possi bl e
com po nent d am ag e, th eref or e op er atio n un der ex cess ive hi gh
vol ta ge c ond it i ons sh ou ld be ke pt to a min i mu m, or sh ou ld be
preve nt ed. I f seve re arc ing occu rs, r em ove th e AC p ower
immediately and determine the cause by visual inspection
(incor r ec t i nsta lla ti on , crac ked o r m el te d high vol tag e har ness,
p oor s olde rin g, etc. ). T o ma in ta in the pr op er mi ni m um l e v el of
soft X-Ra y emission, components in the high voltage circuitry
incl ud i ng the pi ctu r e tu be mu s t be the ex a c t r ep lac em en ts or
alte rn at ives a ppr o ved b y th e ma nuf actu r er of th e c o mp l ete
prod uct.
8. Do n ot c hec k high vol ta ge by d r awing a n ar c. U s e a hi gh
vol ta ge m ete r or a hi gh volt age p ro be wi th a VT VM . Disch arge
th e p ictu r e tu be bef ore a tte mp ti ng meter co nne cti on , b y
con nec ting a cl i p lead to th e gr ou nd frame a nd con n ec ti ng t he
oth er e nd of t he lead th roug h a 10 kΩ 2W resist or to t he ano de
bu tto n.
9. W hen s e rvice is r equ i r ed, ob s er ve th e orig inal l ea d dress .
Extra p r ecau ti on s h ou ld be giv en to assu r e cor re ct lea d dr es s
in the hi gh volta ge c ir cu it ar ea . W her e a sh ort ci r cuit ha s
occu rr e d, th ose c ompon en ts th at i nd ic ate ev i den c e of
overheating should be replaced. Always use the
manu fac t urer 's r epl ace m ent com p onents.
10 . Isolation Check
(Safety for Electrical Shock Hazard)
Af ter r e- a s sembling th e pr od uct , always pe rf or m an is o l ation
ch eck on th e expo sed m eta l p ar ts of th e c abi n et ( ant en na
ter m i na ls, vide o/a udio input and out put t er mi n al s, C on trol
knobs, metal cabinet, screwheads, earphone jack, control
sh afts, etc.) to be s ur e th e pr o duc t is saf e t o op er at e wi th out
d ang er of elect ri ca l shoc k.
(1) Di electric Strength Test
The is olat ion b etwe en the AC primary c ircu it and al l m eta l parts
exp osed t o the us er, par t icu l ar l y an y ex po sed metal p ar t h aving
a re tur n pat h to the ch as sis sh ou ld w i ths t and a volta ge of
11 00V AC ( r .m .s.) f or a p eri od of on e sec ond.
(. . . . Withstand a volta ge of 1100 V A C (r.m.s.) to an applian ce
rate d up to 1 20V , and 3 000V AC ( r .m. s.) t o an appl i anc e ra ted
200V or more, for a period of one second.)
Thi s m eth od of test r e qu ires a t es t eq uip ment n ot g en er ally
fou nd in t he servi c e t ra de.
(2) Leakage Current Check
Plug t he A C line cord direct ly i nt o th e AC ou tlet ( do not u s e a
line is olation transf ormer during t his che ck.) . Using a " L eakage
Current Test er", m ea s ur e t he leakag e cur r en t fr om each
exp ose d m eta l par t of th e c a bi ne t, p ar tic ul ar l y an y expo sed
metal part having a retu rn path to t he ch assis, to a kn own good
ea rt h gr o und ( water p ipe, etc.) . A ny l ea k ag e c ur r en t must not
exce ed 0.5m A AC ( r .m. s.) .
Howev e r, in t ro pical a rea, this m ust no t e xc eed 0 .2m A AC
(r.m.s.).
"""" Alte rn at e Che ck M et hod
Plug t he A C line cord direct ly i nt o th e AC ou tlet ( do not u s e a
line isolation transformer during this check.). Use an AC
vol tm et er h av i ng 100 0 ohm s per vol t or m ore s en s iti vity in the
follo win g ma nne r. Connec t a 1 50 0Ω 1 0W resi s tor pa ralle l ed
by a 0.15μ F AC - typ e cap acitor b etwe en an ex p ose d m eta l
p art and a k no wn go od earth gr ou nd (wate r pi p e, et c .).
Measu re th e A C vo ltag e acr os s th e r esist or wit h t he AC
voltmeter. Move the res istor connection to each exposed metal
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 volta ge acr oss th e r esisto r.
Now, reve rs e the plu g i n t he A C out let a nd r ep e at e ach
measu rem ent. An y volta ge measu red m us t not exce ed 0.7 5V
AC (r.m. s.) . This corresponds t o 0 .5 mA AC ( r.m.s.).
Howev e r, in tr op ic al ar ea, this m ust n ot excee d 0.3V AC
(r.m.s.). This corr esp on ds t o 0 .2mA A C (r.m.s.).
AC VOLTMETER
(HAVING 1000 Ω/V,
GOOD
EARTH
GR OUND
11 . High voltage hold down circuit check.
Af ter rep ai r of th e high vol t age h ol d d own c i r cuit, th is ci rcu it
sh all be c hec ked to op er ate cor rectly.
See item "How to check the high voltage hold downcir cuit".
This mark shows a fast
operating fuse, the
letters indicated below
show the r ati ng.
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
POWE R CORD
REPLACEMENT WARNING.
Co nne c t ing t he w hite l ine s ide of pow er
cord t o “WHT” character side .
A V
No. 51991
3
C-N21310
A
(
)
p
C-N21103
V-N21203
FEATURES
" N ew chas sis d esign enab les us e of a s ingle board wit h simpl i fi ed
circuit ry.
"
Provid ed w ith miniatu re tuner (TV/CATV ).
" Mult if unct ion al rem ote c on trol perm i ts pi ctu re a dj ustm ent.
" Ad option of the CHANNEL GUAR D fun cti on prevent s th e s pecifi c
chan nels from being selected, unl ess th e “ ID nu mbe r” is k ey in.
"
I2C bus control utilizes single chip ICs.
" SYSTEM BLOCK DIAGRAM
MEMORY IC
SCL
SDA
" Ad opti on of the VID EO ST AT US f unc tion .
"
Adoption of the ON/OFF TIMER function.
"
With 7 5ΩV/U in c ommon ( F-Type) AN T Ter minal.
"
SLEEP TIMER for s etting in re al t ime.
" Clos ed- capti on b roa dc asts can be view ed.
" Au di o Vi deo i np ut te rm in al.
"
Au di o outp ut te rminal.(On ly f or AV-N2120 3)
"
Built- in MTS sys tem.(On ly for AV-N21203)
REMOTE
IF1
CONTROL
TUNER
TU NER
CONTRO L
CPU
MAIN M ICON
SCLSDA
TONE
AFC
1Chi
DECO DER
4
No.51991
A
MAIN DIFFERENCE LIST
Model
!!!!
Parts Name
MAIN PW B SFV-108 0A- M2 SFV-108 1A- M2 SFV- 108 5A-M2
!
FRO NT CA BIN ET LC10109- 02 1A- A GQ1 0020-004A -A GG1 0020-002B -A
!
POW E R KNOB LC30 376- 00 4A- A GQ3 002 6-002A -A
!
PUSH KN OB
(CO NTROL KNOB)
!
REAR COVE R LC10 108-00 2E- A GQ1 001 3-003B -A GQ1 001 3-002B -A
C-N21310/SAV-N21103/SAV-N21203/S
LC30271- 00 4A- A GQ3 0025-002A -A
C-N21310
C-N21103
V-N21203
Dimensions (W×H×D)
Mass 19. 6 k g 20. 2 k g 20. 4 k g
Color / Sound S yst em
Aud io Power O utpu t 1W 1W 1W+1W
Audio Output
Spea ker
Headphone jack
50. 3cm×45 .2c m×49 .3cm 59. 2cm×45 .6cm×48 .7cm
NTSC-M
5×9cm
Oval type×1
3.5 mm mini jac k
(Soun d i s monaural)
NT SC-M / B TSC System
(Mul ti Chann el Sound)
15 50m Vr ms(-4dBs)
Low imp edance (400Hz
when modu late d 10 0%)
(RCA pi n jack )
5×9cm
Oval type×2
3.5 mm ster eo mini jac k
(Soun d i s stereo)
No.51991
5
C-N21310
A
C-N21103
V-N21203
SPECIFIC SERVICE INSTRUCTIONS
DISASSEMBLY PROCEDURE
REMOVING THE REAR COVER
1. Unp lu g t he po we r s upply cord .
[For C-N21310/S]
2. R em ove th e 5 scr e ws marked !
shown in Fig.1.
[For C-N21103/S ]
2. R em ove th e 9 scr e ws marked !
shown in Fig.1.
[For AV-N21203/S]
2. R em ov e the 9 scr ew s mar ked !
shown in Fig.1.
3. W i thdr a w t he REAR CO VE R t o wa rd you .
[CAUTION]
"
W hen reins t all in g the r e ar cove r, c arefu ll y pus h it i nw ar d af ter
inser ti n g the MA IN PWB i nt o the r ear c ove r gr oo ve .
!an d a scr ew ma rke d """"as
!!
!an d a scr ew ma rke d """"as
!!
!an d 2 s crews m ar ked """"as
!!
REMOVING THE MAIN PW BOARD
" After removing the rear cover.
1. Pic k t hi s side of t he MAIN PW B and rais e on e sligh tl y, tak e off
th e PW B s top per ma rke d #
2. Pu ll out the MAIN PW B as it is.
(If necessary, take off the wire clamp and connectors, etc.)
# from th e ca binet b ott om.
##
REMOVING THE SPEAKER
" Af ter r em oving th e MAI N PW boar d.
1. Rem ove the 2 scr ew s m ar ked
[For C-N21310/S and C-N21103/S]
SP EAKE R ( ×1)
[For AV-N21203/S]
SP EAKE R (×2)
$$$$
.
CHECKIN G THE MAIN PW BOARD
1. To ch eck the ba ck s ide of the MAIN PW Boa rd.
1) Pu ll out the MAIN PW B. ( R ef er to REM OVI NG T HE M AIN
PWB ) .
2) Erec t th e chass is verti ca lly so th at you ca n eas ily check the
backside of the MAIN PW Board.
[CAUTION]
"
When er ect in g t he M AIN PW B, be car ef ul so tha t th er e will be n o
con tact in g with ot her P W Board .
"
Befor e turning on p ower, make su re t hat the CRT e arth wir e and
oth er c o nn ecto rs are p rop er ly c onn ect ed.
WIRE CLAMPIN G AND CABLE T Y ING
1. Be sure c lamp th e wir e.
2. Never rem o ve th e cable ti e used f or tyi ng the w i re s to gethe r.
Sh oul d it be i n adv e rt ent l y rem ove d, be su r e to tie the wires with
a n ew c able tie.
6
No. 51991
A
3
FRONT CABINET
CRT SOCKET PWB
(Within MAIN PWB)
SPE AKE R
BRAIDED ASS’Y
C-N21310
C-N21103
V-N2120
DEG. COIL
REAR COVER
D
MAIN PWB
PWB STOP PER
C
Thi s expl od ed view des crib es
ab out the C- N213 10 /S.
Alth ou gh th e C-N21 10 3/S a nd
AV -N 21 20 3/S is sl ig ht ly dif fer en t
fr om thi s f ig ur e, you can u se t his
figu re for d isasse mblin g th e C-
N21103 /S an d A V-N21 203 /S in
the same steps.
B
A
Fig.1
No. 51991
7
C-N21310
A
C
S
[
]
C-N21103
V-N21203
MEMORY IC REPLACEMENT
1. Memory IC
This TV uses a memory I C.
Thi s m em or y IC st ores d ata f or pr oper o pera tion of the vide o and deflec ti o n cir cuits.
When replacing t he memory IC, b e su r e t o use an I C writte n with th e in itia l va lues of data.
2. Memory IC replacement procedure
ProcedureScreen display
(1) Power off
Switch off th e pow er an d di s con nec t th e p ow er c o rd fro m t he out let.
(2) Replace the memory IC
Be sure t o use a memory I C written with the initial settin g data.
(3) Power on
Con nect th e power cord to th e o utlet and switch on the power.
(4) System constant check and setting
" The adjustment should not be done without signal
1) Pr ess SLE EP TIMER key and, while the indication of “SLE EP 0 MIN.”
is being displayed, press DISPLA Y key and VIDEO STA TUS key on
th e r em ot e c ontro l u nit simu lt aneous ly .
2) The SERV ICE M ENU sc r ee n of Fi g.1 is d isp l ayed .
3) W hi l e th e SER VI CE M EN U is d is pl aye d, again simu ltan eou sly p ress
th e DISP LA Y and VIDEO STA TUS ke y s to di s play th e Fig.2 SYSTE M
CONSTANT screen.
4) Refe r to t he SYSTEM CONSTANT t abl e 1 and c hec k th e setti ng item s.
Wher e th ese di ffe r, s el ec t t he s etti n g i tem wit h th e M EN U UP /DOW N
key and adjust the s ettin g with th e MENU L EFT /RIGHT keys. ( Th e
letters of the selec ted item are displayed in yellow.)
5) Af ter ad justing, r el e ase t he ME NU L EF T /R IGHT k ey t o st ore th e set ti ng
value.
6) Press the EX IT key t wice to r eturn th e n ormal scr een.
(5) Rec eiv e channel setting
Refer to t he OPERATING INSTRUCTIONS(USER'S GUIDE) and s et the
receive channels (Channels Preset) as described.
(6) User settin gs
Check th e us er s ett ing it ems ac c ordi ng to Tabl e 2.
Wher e thes e d o not agree, r ef er to th e OP ERATIN G I NSTRUC TION S
(USER'S GU IDE) an d s et t he it ems as des crib ed.
SERVICE MENU
PIC TURESOUN D
GAME
LOW LIGHTHIGH LIGHT
RF AF C CHK
VCO(CW)
SELECT BYEXIT BY
OPERATE B YEXIT
Fig.1
SYST EM CO NST ANT
MODEL: *******
HI P: YE
VCAN V-CHIP:YES
********
********-*****
****************
SELECT BYEXIT BY
OPERATE B YEXIT
*****
**********
*******
**************
Fig.2
Only for AV -N21 20 3/S
Indicated Model Na me
(7) SERVICE MENU setting
Ve rif y what to s et i n th e SER VI CE M EN U , and s et what ever is
necessary.(F ig.1 ) Refer to t he SERV ICE ADJUSTM ENT f or settin g.
8
No. 51991
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