Luxman K-12 Service Manual

,J0.
]TEI6
TAPE
REQUI
REN
SELECIOR POSITIO.I
EQ Sw
I
Br.{s
SW 1NPUT SIG{AL
ALIG.IMENT
PROGUJRE LIMIIED
SPEC REI'IARKS
(2)
Set
the BIAS
sw to
"CrO2",
and
preset
the
BIy'S
currcnt
to
400!4.
rrinnner
Pot for
cro2
Brr'ls
*j
--
ks w31;
(5)
Set
the
BIAS
sw to
"EX',
and
preset
the BIAS
current
to
650uA.
Trirmer
Pot for EX BIAS Adj.
--
Lch \T203a
Rdr \R201b
CrO2 400uA
(=4nV,
at 10
ohns)
EX 650u4
(=
6.5mV,
at
10 ohrns)
4.
Peaking Adjust
at
MC. EQ.
AN,IP
NORI{AL
cfz
EX
NOFMAL
18kHz
l0onv
(
- 18dBn)
201412
2IkHz
To
keep out the
action
of
B1AS
OSC,
insed a tj.p of
paper
in the leaf switch connected
in series with
the
power
slpply to the
oscillator. (The
leaf Sw
is
placed
near the nain solenoid.) Then
put
the deck
into
the
"REC'node.
(1)
Set
the Equalizer
Sw
to the
iNoRN[AI"
position,
and
apply l8kllz 100rnv signal to LINE II\'PUT.
Adjust
the
peaking
coil for NoRMAL to obtain
the
maxirRm
output
at the
10-ohn
resistor of
the R/P
neao.
Peakjng
Coil
for
NoRI4AL
---
Lch L105a
Rch L106b
(2)
Set
the Equalizer
Sw to the
"CrO2"
position
and
apply 20kHz 100rnv
signal to LINE INPUT.
Adjr.rst
the
peaking
coil for CrOT to obtain
the naxiflun
readins
on the VTVNI,
Peaking
Coil
for
CrO2
---
Lch
Ll04a
Rch
L104b
(5)
Set the Equalizer
Sw
to the
"Etr'
position
and
apply 2tkHz 10OnV
signal to LINE INPUT,
Adj ust
the
peakirg
coil for
EX to obtain the naxijntnn
readins on the
\]T\4,1.
Peaklng
Coil for
EX
---
Lch 1106a
Rch L106b
Eadr
peaki-ng
leve1
at
the respective
rcde, NOR{AL
CrO2
and EX should
be apprcxinately
20dBn
at
18kJ1z, 20HIz, zlldlz,
conpared
with that of lkHz
(4)
Do not forget
to
renrve
a
piece
of
paper put
on
the leaf
switdr.
Adj ust
peaking
for
NoRI.1AL
node
by use of
l8kHz
signal
Adj ust
peaking
for
CIOZ
node
by use of
20kHz signal
Adjust
peaking
for EX node
by
use of 211clz
s ignal
Output
should
be
measured
across the
10
-
ohn
reS1stor.
.5.
REC
Gain
Adj
ustnent
(NOR'IAL)
AC-22r
NOFI''AL NOFMAL
400H2, 100mVl
3dB(-i8dBn:icB)
Output 1eve1
at
LINE OUT, noni-
toring
source,
should be
580rnv
Adj ust
the REC
Gain trinner
pot
to obtain LINE oUT
output level of 580nv(-2.5dh) when
the AC-ZZI
tape
400H2
si$al is
recorded
and
played-back.
NOR iAI REC
Gain
Adj Lrstnent
Lch \Rl10a
Rcn !R110b
-
2. s
:0.5
dBn Input
Level
at LINE IN
should.be
-18dB
:
3dB.

Luxman K-12 Specifications

General

Brand	Luxman
Model	K-12
Category	Cassette Player
Language	English