Playback Frequency Response Adjustment; Record-Playback Output Level Measurement - Marantz SUPERSCOPE CD-320 Service Data

cD-320
5&15 Pl.yb.ck Fr.quoncy R.3ponr! M.â,urômcnt
SET UP
. 50/60 Hz AC voltage r.têd lor the unit to bê
used in a mârker country.
. D C 6 V
2. EOswitch position: 120,1S,70rrs
3. Ourput terminâl: LINE Ourput
4. Tên tape llsed: MTT-Il6U (120!S)
MTT.Ir6K { 70lrsl
?ROCEDUB€S
'L Pl.y ûe ter tape MTT-r16U and MTT'|16K back.
Ler the 31.5 Hz and 14 kHz outpui level b€ 0 dB
ô! rêference level.
2. Reôd the 31.5 H: to 14 kHz outpul leveldifferences
trom the 315 Hz 0 dB reference level.
3. Pro.e€d both for the right and lelt chânn€le in the
4. For ths above meôsurenEnt, us€ thê te$ tôpê MTT'
I l6U for the EO 120 gS position ônd MTT l l6K
lor the EO 70 lrs position.
CAUTIOiI
Since the te3t tâpes ussd may involve 3am€ h€ad
azimuth difterence, lhs he.d azimuth thould be
corrected ai rh€ highen lrêquency ol €ach tert tâpe
befor€ measuremcnl,
STA]IOARO
In r€ference îo rhe 315 Hr, 0 dB signal output lsvê|,
+ 4 t o 4 â t 4 0 H z
+4 to -6 at 12.5 kHz
5B-16 Rlcord'Playb.ck Output Lsr€l M..tursrmnt
{.r LlirE OUTI
SEl UP
. 50/60 Hz AC voltage rated for rhe unit to b€
uæd in â mârket counùy.
. D C 6 V
2. Input: I kHz, 60 dB sisnal
3. Loâd: Meâsuring instrumênr input impedance
4. Lèvel conùol position: SRL lor recording opera-
5. TAPE selector switch position: NORIVAL, CrOl
and Fe.Cr
6. Meâsu.ing output terminal' LINE OUT
7. Cassêtte tape used: TDK AC21l, AC5ll and
soNY cs,30
PROCEOURES
L Record the 1 kHz, _60 dB signâl in the normal
2. Rewind the recorded part of tape and play it
back. Fead the VTVlvl indication.
3. P.oceed for the NORMAL' CrO, and F€-Cr posi-
tionr each in the same mânner.
4. Proceed boih for the right ând lett channelr in the
STAt{OARDS
1. NORIVIAL posirion: 560 mV 12 dB
2. CrO, poriîion: 560 mV 12 dB
3. Fe-Cr positionr
560 mV 12 dB
!
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