Playback Signal To Noise Ratio Measurement; Playback Output Level Measurement - Marantz SUPERSCOPE CD-320 Service Data

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5&13 Phyb.ck Sign.lro l{oir. Reiio M..rur.mnl
SET UP
. 50/60 Hz AC voltage râtêd for thê unit to bê
usêd in a rfiarket country,
. o c 6 v
2. EO rwitch position: 120ils,70gS
3. Output terminalr LINE Ourput
4. Tesi tâpê used: MTT-I 12
PROCEOURES
t. Load the test tap€ MTT.I 12. Ssr up th€ unrr to ûe
normal plâyback siate with the use of th, LE.C. A-
2. Read playback ouçur as a 0 dB rsterênce. Thsn
. playback blânk tape and note thê output tevet drop
in dB.
3. Pro.eed both for the right ând lefr chânoek in rhe
4. Rep€at the abovê m€asurement for eâch tap€ setec-
lor iwirch position.
SlAI{OARD
Gr€ater than 54 dB
cauTtoNs
L Arr.ng€ the unh pow€r cord lor hinimum hum
2. Eftec1 by induction nois€s thouldbê minimtzed tor
ths measurem€nt.
58.14 Phybâck Orilpul L.v!l l$.3ur.|rl.nt
SEI UP
.
50/60 H: AC voltage rated for the unit to De
usêd in â market counùy.
. D C 6 V
EO swatch position: 120lrs
Outpui têminat:
LINE Outpur
Tert tâp€ uæd: MTT-'I l2
PROCEOUBES
L PIây lhe taps back in th€ normât ptaybâck srâts.
Read rhê VTVM indication.
2. Procoed borh lor the fighr and t€ft channsls in the
sTAt0an0
Within 860 mV
t