Marantz 75DC1010/1B - 7, Electrical Adjustment

Q¢-EARILESRBAH
@
2D
Model
FHENMEF
zyYVFTFSDICRO4
OBLET
Fo
4-74 A 5GRH (AF OSC)
7YFR-F (6000)
VTVM
Bea
AYUOAI-TS
D9, IIVI-R-I—
hVyrx—-9— (ALY bB)
FUI VERRY —
TIVIF-TF
NVYA
LV
-+—-
CHEKBELE
SOD)
AC-224
(Normal)
|
AC-712
(Metal)
AC-513
(CrO2)
OO0O0ODO0C000
iEM :
LRP
RED
LUMBS
LUT
-
SEER
LTCES
>
O FAbhF-TF
TCC-112
+
MTT-111..000.....
79-79%
F-TSAE-F
TCC-140 - MTT-112B.......... S/N It
TCC-130 + MTT-150........... BA Av se
TCC-161 - MTT-256............ BEEZ (Normal FA)
TCC-261 + MTT-356.....0-- FABER (Cr O2/Metal Fi)
TCC-192 + MTT-121........... PARP
TCC-194
+
MTT-141............
Fevaweny-vav
TCC-174A + MTT-255M.....7 VV Aga
(A-BEX) - (TEAC)
O Ay FBELUAA F7-Y (M-300)
24; (64 1) ee Ay Ky 4 FR
CROs
Cc
Ale
ONE LNZEA
1)
FARF-TRRELPTVOT,
MAT
SAMS
FY
Rae
PRIVEEA
VHT
THA
IRL
TC
REM.
2)
FARF-TUbIYAAMOMB
BE?
4
-—F-OTC
VEC ICItBEDEO TK PSV
WROREL
LC.
ty
bPoPPRNAACTL—-+—
DALIFRANAY
FL
EX
TAP
VIMO
EP
4
~5
MHL.
Pot
OMLRSHCTPOAL
IF
EDO
TKRSW
4)
PAP
SURSRRLTOEOIL,
BAN
ITL-F
—
CH
LT
(
HSV..
|)
ARAFAERMRVUT
KIA
VS,
BNRDOME/
ACHE
LTC
REV.
)
AU-K,
TUF,
CY
hOWEORB
CME
F
=
Y
AULT RSW
Ry
Foy
7aPRel,
AMKHRSs*vV
FNM
LEERY EFERBLTC REV.
3)
ACHREE,
4-74
TRB
RBES
I,
102~3
0
ELAN
PFeryVILT
RSW.
3
peed
T
a
25
6.
TEST
EQUIPMENT
REQUIRED
FOR
SERVICING
For
measuring
or
checking
your
Cassette
Deck,
the
following
instruments
and
materials
are
necessary.
¢ Audio Oscillator (AF OSC)
¢ Attenuator (600Q)
¢ VTVM
* Distortion Meter
¢* Oscilloscope
¢ Wow and Flutter Meter
¢ Torque Meter (Cassette Type)
* Digital Frequency Counter
*
Blank
Tapes
(Completely
erased
with
bulk
eraser)
AC-224
(Normal)
AC-513 (CrO2)
AC-712 (Metal)
NOTE:
If
any
doubt
is
noted
in
a
measured
value,
use
new
tape.
¢ Test Tape
TCC-112:MTT-111
TCC-140:MTT-112B
TCC-130:MTT-150
TCC-161 -MTT-256
Wow and Flutter, Tape Speed
Signal-to-Noise Ratio
Level Adjustment
Frequency Response
(for Normal)
Frequency Response
(for CrOz2 and Metal)
TCC-192-MTT-121 Cross Talk
TCC-194-MTT-141 Channel Separation
TCC-174A:MTT-255M Azimuth adjustment
(A-BEX): (TEAC)
° Mirror cassette 12m padiless
TCC-902-MTT-902 Tape travel check
¢ Head and guide gauge (M-300)
THG-801
TCC-261 -MTT-356
7. ELECTRICAL ADJUSTMENTS
(A) Remark for adjustment
1)
Test
Tapes
damp
easily.
Erase
magnetism
of
heads
and
capstans,
etc.
completely
with
head
erasers
before
using
them.
Keep
away
from
measuring
instruments
have
transformer
inside
and
tape
eraser.
The
method
of
magnetism
erase:
turn
the
head
eraser
on
a
little
away
from
the
sets.
Then,
close
heads
and
capstans
and
move
up
and
down
4
-
5
times.
Turn
them
off
after
making
distance
slowly.
4)
Tools
you
are
going
to
use
should
not
be
magnetized.
Erase
magnetic
them
by
bulk
eraser
sometimes.
Adjust
semi-fixed
resistor
for
adjustment
and
variable
coil,
etc.
spin
and
the
number
of
times
as
less
as
possible.
Adjust
and
check
SPEED
and
WOW,
etc.
by
normal
sets
condition.
A little bond lock and pay attention to sticking around
and flowing.
Check
AC
voitage
input
and
audio
Oscillator
output
voltage
2
-
3
times
per
day
to
operate
as
normal.
_
3
—
5
~—
6
=
=
8
—
PCS 79 713