Technics RS-DC10 User manual

Pl.lse tlla rnd u39 thlE supplement manurl togelhor
wlth the seralco m.nual lor Modsl No. BS'DClo' Ordor
No. AD9209339C1 (PP), AD9209340C8 (EB' EG' G).
Nol.: Thls supplEm€nt is intsnded to provide additlonal
lnformatlon or corrections lo lhe sxlstlng Seryice
manual lor Model No RS'DCI0 B€ sure to updat€
you. seryice manual for fuiure roforonce.
FOR USE OF ADJUSTMENT
!CONTENTS P.g.
cAuTroN r ...- ..... ....... . ... ......'. ....... . -... .... .-.. 2
PnEpaRAflOI FOF ADJUSTlrENT..... .....'." ..................".-..'., 3
EXAiIPLES OF PNOEIEXS WTIICH hEOUIRE
aoJusTuElr.......... .......'.......'.-..... a
wltAi You sHouLo Kllovv EEFoRE ADJUSTf ENT............'. 5
aoJusrilE[r .,...........". ....-....'........'.. 7
r. zrEc aoJusTlrENT............. ...................'..............'.'...'. ...'. 7
2. OPTITUM DCC RECOBOING CURRENT
aoJUsTf,El{T.. .-.. ...."...........' l0
3. t cc PLAYEACK LEVEL ADJUSTilENT" ...........". ........'... ll
a. ANALOG OUTPUT LEVEL AOJUSIUENT..'...'.'. --........ .. .. la
Sullir lo.
Modol No Area Colo!r
(PP) USAicaneda
(K
(EB Groai Brltaln
(EG) Gormany, ltaly and
Europe
(G Aala. Latin Amerlca,
Middle Near Easl
and Alrica
Prg.
5. CONFINTATION OF A'{ALOO OUTPUT
DtsToRTrota ^oJUsTfENT.........................----.....'14
oFoEF NO A@3072r09
RS.DClO
Colour
t(Kl---Jl""k'rlr" I
Aroa
6. OOLBY LEVEL ADJUSTXEI{T
,. ANALOG PLAYBACK FREOUEXCY
nESPOISE A}jUSTUENT.,.. ..........................,....,...... t6
s. TIPE SPEED AOJUSTf,Eilr...... ...-....,,.. ....,... ... .. .. .. 16
9. OUTCK REVERSE SEt{SO9 ADJUSTMETT ..............,........ 16
'r0. PLL ADJUSTmENT...... .... ..... 1f
fi. F.L. LEVEL I{ETEn SEN$rlVlTY ADJUSTI|ENi... .. .. .... 17
T2.DCCTESTF|XTUBESUaT..,,. ....,.......,,,,13
13. TnouBrEsHdorltc a ourcK sEFvlcE lNFoR lATloN zl
NOTE : Please put this Supplement-'l (AD9307210SO1 in the
place of Supplement (ADS212389C8).

RS.DClO
ICAUTION !
I Conn."t a wrist slrap (RFKZfiXr6) to the mstor's ground terminat. Always woat a w]tst
straP wh€n replaclng the haads or lnspectlng or repalrlng a P.C.B. to prev€nt electrostatic
breakdown. -q
Reai!tor
0 Mo)
plus. Fig. 1
p wn"n r9m1v]1s the head Fpc from the READ/wFtrE p.c.B., arways attach a shorting
clip to the FPC to prevent electrostatic breakdown.
.c
Head eo!'y
lnllallatlon gcDw
Hoad ass'y
FPC bqrd
(H.ndh ii c.r.lully )
Flg.2
l! u"" the unmagnetized adiusting screw driver (RFKZ0037) for replacing the head and for
AZTEC adjustment.
Cfhe head may be damaged by an oxternal magnetic field.)
lamlnal fo, m€e6ureoonl, bc aura
to use a powe, oord wilh 3-prong
C oullet
Ground te,mlnal
sl16p (RFKZ@35)
(Antl-stallc bracet6t)
**.""*^,*:ll
Msssudng lostrumonl
(Et: Dlgtortion Factor Mot.rl

I RS.DCI0
! PREPARATION FOR ADJUSTMENTS
. How to use Exlenslon cables (RFK20029, RFKZ0030, RFKZ0031) lor AdJustment
Extenrlon cable PCg loPcB
FFKZ0029
RFKZ0030
FFKZ0031
Main P.C.B. - M4h.nlEm Elock (JW02/05/OO) (S€e FlO. 3)
PASC P C E. - Rerd/Wrlte P.C.B. (S€o FlO.4)
Maln P.C.B - PASC Olgllal P C B. (S.e Flo. 4)
ffi"""*'''""u
Tr--r-Y'***
Orgital P C.B
Fig. 3
. Necessary Tesl tapes lor each adlustment
Part No Name Use
ozzcac lokHz Test tape AZTEC Ediu6lmeol
QZZCaO Mirror tape
RFKZ0033 OCC Blank tape Opllfrum DCC racordlnO curranl adlustmsnl
occ-s1 DCC Characteristlcs tepe DCC playb.ck lovel adiullmont and Error R.lo
ch@k
QZZCFtt ACC Tesl tape
AnaloC leedback adlustm.nt
Mlnlmum analoO outpul dl!todlon .dluatmcnl
Analog oulpui lr6quoncy re!9on3€
ch.racte,aslics edlustm€nl
RFKZ(x)38 Oolby level lape Dolby level 6dlustmont
ozzcwAT 3 kHz Test lape Tap€ spood adlultmcnl
J.06
Use FFt(zoo30 lz
Fig. 4

Hs-l,te ru I
. Necossary lools and measurlng lnslrumonts
lTooial
Unmagnotlzed adlusting er€w driver (RFKZq)37)
C0 player (EX: SL.PS700, SL.PS900 €lc.)
tMe;sr,Jinglnstrumontl-l
Oscilloscop€ (30MHz or Hlghe4
Olslorlion Faclor Meter
Frequency Counter
Electrlc Volt Mel€r (AC/OC)
IEXAMPLES OF PROBLEMS WHICH
Probl.n or Rcprlr nlqslrlng Adruslmnt
REOU!RE ADJUSTMENT
Adluslm.nt hm
ACC tape pl.yback lovel l@ low.
Dille.ent ACC lape plEyback tdol! b9tw6n
L.nd Flch ANALOG OUTPUT LEVEL AOJ.
Oilteront ACC tEpg playback lov.lo b€twesn
FWD and REV PLAY mod$.
Distorllon ln ACC tep6 pleyback output
DCC tsp6 pleybeck output drop-out.
Proorcm! prlrsordod on r DCC trp€ ,6motn
alle, ov.rr@ordlng on lhc srma tapc
DCC tape playbaok levol too low.
PASC Oigilel PC.B ha3 ben repalred du6 to
DCC playb6ck oulput dropout
FL l€vol mgler ha6 bogn rgplaosd. LEVEL METER SENSITIVITY AOJ
Molor, belt, or llywhel has b€en replecod
Splndlo Eqdo lslls lo l@kin.
-____- HEAD AZIMUTH AOJ.
r__l Boad/Wril6 P C B
H6rd replecement
o,..FFFFFFFF,,
ffi l---f I I Re6d,wrlroP.C.B.
rl
I I Ro.drwrlte P.C.a-
tt
1---J-
TAPE SPEEO ADJ
Oulck rdorsa machanish mallunctions ANALOG FREOUENCY RESPONSE AOJ

IWHAT YOU SHOULD KNO\it' BEFORE ADJUSTMENT
The DCC head block €mploys the AZTEC mechanism.
AZTEC plays an important role in stabilizing the running of the tape relative to the head.
Sido viow
FATG
The Flxed Azimuth Tape Guldance (FATG) has a diflerent shape above and below the tape.
The upper part @ ls the gulding surface for the tape's upper edge. The slanted area of
the lowe. part (9 is structured so that the lape moves itself upwards. The tape usually runs
along the upper guidlng surlace @.
When lhe head has been replaced, be sure to adiust the AZTEC.
x lf condlilon o or @ occurs, adiust the azimuth screws to obtain the correct position
(as shown in O).
Curllng
*"{nr'"-
O Head and laP€ hub aie corectly allgnsd.
Fig. 3
O Head is too high rolatlvo to lho tape hub.
O Head is too low lolalive to lhc i.pe hub'
Fis.2
I

I ns.ocro
o Fronl Panel
. Rear Panel
. P,C.B. Locltlon
@ BEAD/WF|TE P.C.B.
o PASC DtctTAL P.C.B
o rRAY P.C B.
(, MA|N P.C B.
4+1:
-t- .i.
@@
E _Etl-o'mm nm'I 6-@-
Flg. 5
Fls. 6
-6-
@
#
t-ri.spF,H 1--@ m
rlO@()llTrHixiEr
"l ooollo@pr@ --l-
Itl___-_r--t_ lan\
--------------- F lts

I RS-pc1o
IADJUSTMENT
Pr€96,ation! T.!t S.tup
Tools & Jlgs Mesurlng lnslrumcnt!
1 Mlilor l8p€ (OZCRO)
2. lokHz T6l l.Pr (OZZCACI
3 Unmaonotlz.drdlulting
scrow dtlvo. (RFKZm37)
,a W.l.t !lr!p (RFf\ZdXtr)
1 Oscllloscope
(30MHz or hloheo
FIX OUT(ANALOG) LCH - O8cllloscop6 CH1
RCH - Oscllloicogo CH2
Fig. 1
. Adlustmant StcPr
(1) Trlg0oronCHl.
izi n"iri*" rn" tape control lover lrom the tray mschanlsm'
Sprln0
Fig. 3
. Rough Adluslm.nt
rcTEFn
1. Uslng tho Mlror tapo (OzzCRD):
Adiu;t lhe Azlmuih scrcws so that th€ Mlrror tape
(oizcnO) runs orer lho c€ntor ol the heed'
2 Nol uslng the Mlrror laP6 (OZZCBD):
while pli'ylng back tho lokHz Test tapo (OZCAC)'
adiusi the Azimulh sct€ws to altain a peak on one
channel (ROH) onlY.
I
aln . P"k
1. AZTEC ADJUSTMENT
Fig.2
\E

R$DC,O I
. Flne Adlusimont
ITTEF-I Forrrrd rldc ldlu3tm.nt
To adlust ln th6 tomard diroction, us€ the rlght sldo Azlmuth
screw.
Oo not touch tho laft slde Azlmuth Ecrew (Flg.5).
1. Run the lokHz Test lape (OZZCAC) to ils mtddlo. Prsss a
fingor on th6 shaded area (@) and run the tape. (fo ksep the
cassetls trom floating.)
2. Whlle kEplng your llnoor ln lhe posltlon given tn Flg. 0.
Pr63s another tlnoor on th6 head ol lho Supply rcel c8p, and
tuh the right sid6 Azimuth sorew to tha riohi. (Controt the
rengc ol momanl to lho l6li and rlght ot th6 CHi wayotorm.)
. Adlustmenl Polnts
t0kHz T.rt
iap.
(ozzcAc)
Top viry o, tho haad tlod(
IEF;]
lC+mondtscdoq!d!
a,rc, frc,n tt !E.
Foilard Plry Azrndl slrr
Ftg. 5
O Stop the right side Azimuth screw at ih6
poinl where only the CH2 waveform
starts to move C. $-"'Qg,
Side vl€w
AZIEC Fig.7
@ Turn the Azimulh screw to the l€fl unfll
th€ point whero lhe wavefotm starls to
move in lhe opposite direction (0.
@ Turn the Azimuth screw to halfway
belween O and @. :fir'8" Fis. e
-6-
Refference flgure

I nsocro
I3T-EF-31 tethod ol Ye.lllc.llon
1. Connocl ih6 oscllloscop€ to ths AZCHK isrmlnal ot lh€ PASO DIGITAL P.C B (Fig. 11).
2. Plsyback lh6 OCC Characteristlcs tape (OCC'S'|).
l, tho pulss wldih shown is within 1soUsc, th€ adlustm€nl is good (Flg. l0).
3. otherwise, ro-adlusl rlarlino wlih |:@ (Fot3r to peoe 7)-
PLLADJ R/t45
Div: O2V
Swe6p; o sms
Flg. 11
ISEFTI Bevcrsr 3ld. rdruslm.nl
To sdiust in the reverse dlrgction, uss th6 lelt slds Azimuth
aorew.
Oo not touch th€ .ioht sldo Azlmuth scrsw (Fig 12)
. Adlustm€nt Polnt6
1. Reverse playback tho 10kHz Test tape (OZZCAC).
(Control thB lape wlth your flnoer.)
2 Whlle r€vorss playing and keeping your flnoor plessed on
the Supply re€l cap (to apply a load), turn the lelt slds Azlmuth
sc.ew as was done for the lorwald sld6 adiustmonl (Flg. 13)
Unmagnetiz€d
adjusling screw driv€r
(RFKZ0037)
Azimuth
screw
Oo adiustmonl bY lollowin0
steps O-O-
Flg. l3
3 The method ol vorlrication i3 also th€ sam8
Oscilloocopo rsngo 50uE.
Wlthln t50Us
B SIOE , ooooo o oo
ezixx g
POINT
PASC DIGITAL P.C.B,
Top vlew ol lh6 head block
LNttoftI
Keep magnelizBd objets
amy trm thls u6..
Rev€rs Play Azimuth scr€w6
Flg. 12
-9-
I

Rs.pclo I
Proparallons T6sl SotuD
T@18 A Ji06 MeasunnO lnslrum6nls
1. CD play€r & CO
2 OCC Blenk t.p6 (nFK2O(B3) 1. Osclllosope
(3OMHz or hlCh60 'ir- F,G7
UO
2, OPTIMUM DCC RECORDING CURRENT ADJUSTMENT (READ/WRITE P.C.B.)
. Conneol tho C0 playol output lermlnsl wllh fhe DCC rocordlng iominal (aiih€r anelog lnpul, dlgital input, or
opllcal inpul). Record th€ CD sound onlo lhe DCC Blank tapo (RFlgdl3il). Thls recordlng givo3 A-ilme.
lHow to do A.tlmo ocordlngl
o@
Pr.!s REW lo ,rylnd
thr llpe to thc !t!rt
po!ltlon Ro
DCC Blank
Tape(RFKzoo3:l) o
16
F9
6jtumu6
dnd indicdr
d h.l ot FPC
Flg. 17
Fig. 15
. Adluslment Steps
(f) Put the unit in REC mode using en unrsordod section
of the DCC Blenk lape (RFKZoogt).
(2) Adlust polentiomotsr R167 to obtaln the optimum
voltage on thg oulput lsvsl ot J15l
t How to llnd lhs opllmum vottags
The blas current indiceted on lh€ beck ot the FPC ol
each head is lound using lhe lollowlng lormula;
v=txF151 (120)
tElmpiaT
When lhe blas current ls 160mA:
V=160mA x 12O= !920mV
Y:5(hv
Xll 0!8
PreO€:Xl 0
Tho blaa currant ig
dllt€r€nl lor oach hoad
-lo-
Orcillacop.
lr-l
@- ff"xl -o