Leak Bias Measurement; Channel Separation Measurement; Cross Talk Measurement; Change Of Power Transformer Primary Voltage - Marantz SUPERSCOPE CD-320 Service Data

cD-320
58-21 Lêâk 8ia! Mêasursmônl
S E T U P
.
50/60 Hz AC voltage râted lor the unit 10 be
used in a markel country.
.
D C 6 V
2 . I n p u t :
1 k H z , - 6 0 d B s i g n a l
3. Loâd:
Measuring instrument inpul ampedance
4 . L e v e l c o n ù o l P o s i t i o n : S R L
5. Tâpe selector switch position: NORIVIAL CrO,
Pn0cE0u8Ês
1 . R e c o r d t h e 1 k H z i n p u t s i g n â l i n t h e n o r m â l r e c o r d '
ing state. Let the monitor outpû level .t $e LINÊ
.OUT lerminal be O dB at r€fercnc€ level. Read
difference of the output level having the Inpul
rignaldisconnected from the 0 dB refer€nce level
2. Proceed both lor the riqht and left channelt in the
slaf{ 0aR0
Lower than -47 dB
58.22 Cro$ Talk Mè$ur.(r|.nt
S E T U P
|
50/60 Hz AC voltage rarcd lor the unil to be
u s e d i n a m a r k e t c o u n t r Y .
.
D C 6 V
2 . T A P E s e l e g t o r s w h c h p o s i t i o n : N O R I V A L
3 . L o a d r
M e a s u r i n g i n s t r u m € n t i n p u t i m p e d a n c e
4 . l v l e a s u r i n g
o u t p u t t e r m i n â l : L l N E O u t p u t
5 . T e s t l a p e u s e d : M T T - I 2 1
P E O C E O U R € S
1. Playback the B channel on the side A of rhe 1est
tâpe N|TT 121. Assure lhal ùe output response at
I kHz b€ 0 dB as reference level
2 . l n t u r n , p l a Y b a c k t h e R c h a n n e l o n t h e s i d e B
o f t h e t e s t t a p e N I T T l 2 l . B e â d t h e o u t p u t l e v Ê l
deviâæd from the 0 dB reierence level
STAI{OARO
L e s s t h â n 5 5 d B
CHANGE OF POWER TRANSFORMER
pÀirvrÀiv vor-race (tor Europe Model onlv)
The CD.32O is wired ior 220V line volrâge ri 'an De
operaled wilh llOV AC bv changins the
power trâns'
l o r m e , l e â d w i r e a s i l l u n r a t e d
58-23 Channsl Sêparaiion Mâ$urem.m
SET UP
. 50/60 Hz AC vollâge rârcd for the unil to be
us€d in a mârket country,
. D C 6 V
2. TAPE selector swirch position: NORMAL
3. MONITOR switch Polition: TAPE
4. Load: Nleâsufing inslrument input ampedance
5. Meâsuring output telminâl: LINE Outpui
6. Tert tape used: MTT l4l
PROCEOURES
1. Playba.k the L channel ol rhe t€tt r.pe MTT'
141. Assume that the output reterence â1 I kHz
bê 0 dB at rêferencê level.
2. In rurn, playbâck the L channê|. Reâd the outpur
level lrom the 0 dB reference lêvel.
sra oano
Less than 34 dB
l 6