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cD-320
v
r'
5B-8 Recordins Currênr Adiustmcnr (Tsmpoi.t)
S E T U P
.
50/60 Hz AC volrâgÊ rared tor the unrr ro oe
u s e d i n â m a r k e t c o u n t r y .
.
D C 6 V
2 . I n p u r s i g n a l : I k H z , 6 0 d B s i g n a l
3 . T A P E s e l e c t o r s w r l c h p o s r t , o n s . N O R M A _
4. Loadi
Nlearufing instrument input imp€dance
P B O C E D U R E S
1 . S t o p l h e . € c o r d i n g b i a s c u r r e n t o s c i a t i o n b y
d r s c o n n e c r i n g
t h e b i â s c i r c u i t + B r e s i s t o r { R 3 1 4 ) .
2. Disconnecr the recording head shietding ,eaos
(sroùnding leads) âr J302 {L channet) ând J302
( R € h â n n e l ) . I n s e n â 1 0 O r e s i s t o r b e r w e € n t h e
rerpective leads and rerminak. Connect â VTVM
âcrors each resistor. Set the CD-320 in the recording
mode of operarion. Adiun the semiJixed .esastors
R 1 4 6 ( L c h a n n e l ) a n d R 2 4 5 { R c h â n n e l ) u n t i t t h e
VTVM reads 0.45 mV eâch chônnet.
3. P.oceed both for the righr and tefr chânnek in rhe
4. Afrer adiustmenr, r€tease rhe reco.ding biâs current.
(é_4ff.*.-,
Larâî llfn ,e'a-.a.
*€T "."
ffi"^.iëi
.:ô?i'..
5Bg
R.cording Bi.t Curr.nt Adju.r|nânr lT.meord)
SET UP
1- Power voltage: Only wh€n the 6 V DC pow€r
voltagE is primary for fie unit ônd this pow€r
voltage as unavailable, use AC power suppty.
2. TAPE selecror switchr NORMAL
PBOGEDURES
1. Dkconnect the recording h€ad ,hiêtding reao,
(groundins l€ads) at J302 {L ch.nnet) and J3O2
{R ch.nnel}. Inser âr lO O .etistor bêtw€en ùs
respective reâds and rerminah. Connecr a VTVM
âc.ors eâch resisror. Ser the CD,320 in the reco.ding
mode of op€.ation. Adjun the semijixed resirtors
R166 (L chânnel) and R266 {R chânne untit the
VTVM reads 3.2 mV in eôch channet.
2. For rhe CO-320 êquipped with thê TAPE setector
rwrtch, make cerrâin thar thê VTVM reads âoorox,
imately 4.2 mV with ir set to rhê CrO, position.
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