Marantz SD9000 - Page 4

MARANTZ MODEL SD9000 STEREO CASSETTE DECK
mute
monitor
timers
Pym
INTRODUCTION
This
service
manual
are
prepared
for
use
by
Authorized
Warranty
Station
and
contains
service
information
for
Marantz
Stereo
Cassette
Deck.
Servicing information and voltage data included in this
manual are intended for use by the knowledgeable and
experienced technician only. All instructions should be
read
carefully.
No
attempt
should
be
made
to
proceed
without a good undestanding of the operation of the
Cassette Deck.
The parts list furnishes information by which replacement
parts may be ordered from the Marantz Company. A
simple description is included for parts which can be
usually obtained through local suppliers.
.P.W. BOARD
As
can
be
seen
from
the
circuit
diagram,
the
chassis,
of
the
Model
SD9000
consists
of
following
units.
Each
unit
mounted
on
a
printed
circuit
board
is
described
with
in
the
square
enclosed
by
bold
dotted
line
on
the
circuit
diagram.
Pre-Amp......+-:-
mounted
on
P.W.
Board
PK11
Mic&
Line
Vol
.....
mounted
on
P.W.
Board
PK12
Output
Vol
........
mounted
on
P.W.
Board
PK13
Power
Supply
......
mounted
on
P.W.
Board
P400
Computer
.........
mounted
on
P.W.
Board
PK21
Remote
Jack
.......
mounted
on
P.W.
Board
PK26
Digital
&
Meter
LED
.
.
mounted
on
P.W.
Board
PK22
Program
Selector
....
mounted
on
P.W.
Board
PK23
Program
..........
mounted
on
P.W.
Board
PK27
Timer
Switch
.......
mounted
on
P.W.
Board
PK24
Rec
Mute
Switch
....
mounted
on
P.W.
Board
PK25
Relay
............
mounted
on
P.W.
Board
P800
Photo
Cuppler
......
mounted
on
P.W.
Board
P001
Mecha
Logic
Switch
..
mounted
on
P.W.
Board
PK31
Sensor
Stop
Switch
. ..
mounted
on
P.W.
Board
PK32
PK33
FF.
Rew
Gavernor
...
mounted
on
P.W.
Board
PMO1
Pre-Amp
for
Music.
.
..
mounted
on
P.W.
Board
P900
Interval DET
2. TEST EQUIPMENT REQUIRED FOR SER-
VICING REPLACEMENT
For
measuring
and
checking
the
Model
SD9000,
the
fol-
lowing
instruments
and
materials
are
necessary.
Audio Oscillator (AF OSC)
Attenuator (600 ohm)
VTVM
Distortion Meter
Oscilloscope
Bandpass Filter
Wow and Flutter Meter
Torque Meter (Cassette T ype)
Digital Frequency Counter
Blank Tape (Completely erased with bulk eraser)
m AC-211 (Normal)
* AC-511 (CrO2)
c CS-30 (Fe-Cr)
" AC-701 (Metal)
NOTE: If any doubt is noted in a measured value, use
a new tape.
Test Tape (New Tape)
MTT-111 . Wow and Flutter. Tape Speed.
MTT-212 . Measurement of output level and
(MTT-112)
MTT-150 . Adjustment of output level.
MTT-216 . Measurement of Frequency Response.
(MTT-116U) (For Normal)
MTT-316 . Measurement of Frequency Response.
(MTT-116K) (For CrO2, Fe-Cr)
MTT-121 . Cross Talk.
MTT-141 . Channel Separation.
MTT-112B . Playback Signal-to-Noise Ratio.
(W.T.D. only)