Marantz CP230 User manual

MARANTZ DESIGN AND SERVICE
Using superior design and selected high grade components, MARANTZ company has created the ultimate in stereo sound.
Only original MARANTZ parts can insure that your MARANTZ product will continue to perform to the specifications for
which it is famous.
Parts for your MARANTZ equinment are Snes available to our National Marantz subsidiary or Agent.
ORDERING PARTS:
Parts can be orderéd either. by mall or by telex.
mail, fulfil MARANTZ order forms.
MARANTZ S.A.
EUROPEAN PARTS DEPARTMENT
(2, Avenue Léopola tii.
B-7120 PERONNES-lez-BINCHE .
BELGIUM.
TWX: 57589 SEPLT B
In both cases, MARANTZ part number has te be specified, If you order by
The following information must be supplied to eliminate delays in processing your order:
1. Complete address
. Description of parts
Way of shipment.
SO ee
PARTS ORDERING:
Complete part numbers and quantities required
Model number for which part is required
Parts may be ordered fram the following addresses:
MARANTZ S.A.
326 Avenue Louise Bte 32
1050 Bruxelles
Belgium
' MARANTZ AUSTRIA Ge.M.B.H.
25 Franz Liszigasse
2380 Perchtoldsdorf
Ausiria ~
MARANTZ FRANCE
4 Rue Bernard Paltssy
92600 Asniéres
France
MARANTZ REDERLAND &.¥.
Wagenmackersweg 3
3449 H.V. Woerden
’ Netherlands ©
EUROPE
MARANTZ AUDIO U.K. LTD
Unit 15/16 - :
Saxon Way !ndustrial Estate
Moor Lane
Harmondsworth UB7 OLW
Great Britain
MARANTZ BELGIUM
‘45 Rue Auguste Van Zande
-4080 Brussels
Belgium
MARANTZ GERMANY G.NM.B.H.
Max Planckstrasse 22
6072 Dreieich 1
Germany|
MARANTZ SVENSKA A.B.
Svartviksvagsn 56
Traéneberg
Bromma
Sweden
Signature: any order form or aeex must be signed otherwise such.part order will be aonaideted as null and void.
MARANTZ AUSTRALIA PTY
19 Chard Road ;
Brookvale, NSW 2100,
Australia
MARANTZ DENAAARK
Bregneredvej 132b
3460 Birkerad ©
Denmark -
MARAMT2Z ITALIANA S.p.A,
Via Monte Napcleone 10
~. 20121 Milano
ttaly oe
All
of
the
above
locations
are
fully
equipped
to
taxe
care
of
your
total
service
ned:
Because
various
countries
have
differing
-
configuration
requirements,
it
is
necessary
that
you:
contact
the
service
facility
in
your
particular
country.
{nm
the
event
that
there
is
no
service
location
listed
for
your
country,
please,
contact
the
nearest
facility
for
a
necessary
assistance.
[~ In case of difficulties; do not hesitate ta contact the Technical
Department at abovementioned address.
oe
‘SER eR eocn ERED:

SECTION
INTRODUCTION pe ee
1,
2.
3.
oo N O
io
‘ELECTRICAL ADJUSTMENTS
P.W.BOARDS ........
TEST EQUIPMENT FO
MECHANISM AN
3.1 Overload Prote
3.2 MIC AMP and
3.3 Auto: PLAY and- Aw
3.4 Auto Stop.
3.5. Pitch Contral, shave
a Record/Playba “Freque
4.10 Alignment. Points Mirae
DIAGRAMS. eee &
5.1 Block/ Level Diagrarns, arson
5.2 Chip Component Locations
5.3 Wir i "g Diagrams. .
EXPLODED VIEW. AND PARTS LIST
ELCTRICAL PARTS LIS
TECHNICA’ ICA
SCHEMATIC DIAGRAM
TABLE OF CONTENTS:
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MODEL CP230 STEREO CASSETTE RECORDER
ee ng
aa
INTRODUCTION. NIE
"SERVICING
This service manual are prepared for use by Authorized
Warranty Station and... contains service information for
Marantz Stereo Cassette.Recorder.
Servicing information and voltage data included in this —
manual are intended for use by the knowledgeable and ex- ‘Audio Oscillator (AF osc)
perienced technician. only. All instructions should be read + Attenuator. {600 ay
carefully. No attempt should be’ made to proceed without a- - @ Oscilloscope »
good, understanding. of 1 the opeaue: of the Cassette ;
Recorder: 8 woos, Boag ° at 4 :
The parts ist furnishes frttonttiation’ ‘by: ‘which, rebiscanene
parts may be ordered from, the, Marantz: Company. Asimpie
description is included for parts: which can be usually ob-”
tained through local suppliérs.
1.
PW.
BOARDS
As ‘can be seen from the ‘circuit diagram, the chassis of
your Cassette Recorder consists of the following units.
Each
unit,
mounted
on‘a
printed
circuit
board
is
described
ee
Hes
re
vor
le
Tape
See
d
oo
within
the
squaré
enclosed
by
a
bold
dotted
line
on
the
cir-
‘MTT-112
‘ 2
remerits
of
Output
Level
cuit
clagtar.
MIT-112B
MTT-150. of Output Levet ae}
on
P.W.
Board
P100
MTT-256
tor
Nerina
MT¥=121
MTT-4441
_
imounted
on
P:
W.
“Board
P700
:
mounted
on
P.W,
Board
P800
“I
motinted
.on P.W:
Board
P900.

3.
MECHANISM
ANDES
CIRCUIT
T
DESCRIPTION:
J tl en--thi AC ‘adapto
possible. that the volt é@ will exceéd this amoun
level
for
the.
collector
bécomes
HIGH,
setting
amo?
to
‘ON
’
_ and causing the current to flow to the b
setiing QM05 to ON.
exceeds
5.5
olts,.
current
flows
at
‘the.
basé-of:
Qimo6
“the
signal
Jevel
at
the
collector:
becomes:
LOW:
and
QM07.
shuts:
OFF.
‘Current
low
into:
‘QM05.:
-The
‘current
is
output
at
Vo:
by
‘stabilized.
‘power.
constructed
in
OMO04
‘and:
amos,
The:
voltage
aches.
srproximarely:
4.5:
yore
by
the
voltage
from
Qmo
3.
ae
phase ampli
adjusti
op oO the amplifier, ‘When OaB
nters by way of: @ and @ at
-SIQF
0111, 211, ari2and O21
At —15dB the level beco nés HIG
¢
circuit:
t:
for
the
mic
‘amp
is
a
low
noise,
positive:
.
2and maximum en is achieved.
fe rewin
pressed
and
docked
in.
‘place,
the.
lock
‘releases.
w
counter.
reaches:
“900”
and
the
PLAY
mode
is
ente
When
the
tape.
has
finished
*
“winding:
in
both
‘modes,
before
the
counter
reaches
the
respective
‘positions,
‘the
AUTO"
STOP
function
and
all
buttons.
are.
released,
Also:
when
the
RE-
WIND
butto
! "9997", The’ same _abolies
ast: foward : ‘Operation. which Stops at 900", Whi
counter: ‘Ts: between: “900'”°and “1999"" ‘bo
‘ing F utton will
lock
welt
preésed:
‘When:
counter:
reaches:
999,
he
rewind
-
tock:
celeases-
and
the
PLAY,
ope
s
SR erence emery Se ynm ne ee cent es
er ts eee
Trea came annie Pest se ay
es

4, ELECTRICAL. ADJUSTMENTS ay
é Precautions for Adjustment and Measurement ae
2. Do riot place the test tape on any mea
3. Do not. put the test tape’ near, a pl
used.
ng instrument,
re ‘the ‘eraser is
4. Method of Demagnetization: ; Turn. hee eraser power.
switch on at a position. far. awa} the heads, Bring
the eraser close to the heads, caps n and. other parts to-
be demagnetized, and move: it and. down four o¢ five
times to’ demagnetize. Slowly separate the eraser far —
away from the parts, and twrn.the: power. switch off.
5. Do not use any magnetized adjusting tool, hi necessary, :
3. After Lannuhene: japent the slavbak and stop settings
several times to Leann no 3 alliage deviation. .
4.2 ae Speed Ad peels
Mode: ‘Playback meade
Frequency.
Test. requ
te ae Counter ©
|. SkHz
‘Line Guiput
: ies Piay the 316H2 ‘signai oft thet test tape MTT 256 back.
; The VIVM at tlio
4.4 Playback Level Adjustment
1. Adjust the a ‘Selector Switch t ‘to ) NORMAL and turn
the NR switch OFF, us :
- 2. Play the test tape MTT-150 back; Adjust RIMO{L}. and
R210(R) so that the voltage. of OA02 © pin and @ pin .
™ ke sure, the voltage ‘of -
is 100mV. In this. operation,
LINE OUT reads 550mV + 10B.
NOTES: ve 3S
1. Proceed both for the nic
way.
2. For: details refert to :
Mode: Palyback. ; ; | HRN a OME ae :
Test Tape. 2. 2 YTV
MTT-150 : ott ey
I
ey
steneyeerpen ie eet
ge Raia

4.6 Playback Noise Measurement
1. Set. the selector Switch to NORMAL and NR switch to
OFF. : : oe
2.. Play back the blank fape sand make sure that the noise
volume is below 2mV when the REC LEVEL Knob is
set to. both: maximum and minimum.
NOTES: sae
1. Perform measurements when the power hum is at mini-
mum, aera
2. Perform measurements under conditions where. induc-
tion noise will not affect measurements.
4.7 MPX Filter Measurement
po =
>
4.
. Adjust the Tape Selector Switch to NORMAL.
. Put the blank tape in the ‘cassette holder, and set the
recording conditions. (Dolby NR “ON”, MPX “ON”
positions):
. Add a 1kHz 20dB 5 signal to LINE IN. Adjust the Rec.
Volume knob to 0dB Level Meter reading.
. Set the input signal at 19kHz +10Hz. Adjust T101 (L)
and T201 (R) to the minimum level.
Mode: record
TONE: 1-kHz, 100mV
, Lk
Line Input Line Output
8 Record/Playback Level Adjustment
. Set the tape selector switch to NORMAL.
Insert the AC-212 test tape in the cassette holder and set
the specified recording condition (LINE OUT: 350mV).
Adjust R119(L) and R219(R) to the same level as the
monitoring level when the tere is s played back after
rewinding. ;
As for CrO;/METAL tapes, mikes measurements with
the AC-512 and AC-711 test tapes as described above.
9 Record/Playback Frequency | Response Ad-
justment
[NORMAL]
1.
~ NR “ON” and MPX “OFF")
Set the tape selector switch to NORMAL - (with Dolby
2.
insert the AC-212 test tape in the cassette holder and set
the recording conditions. Attenuate from 550mV_ to
25dB on Line Out with the attenuator and: record at
~ AKHz and 10KHz on an unrecorded section of the tape.
. Rewind the tape and adjust CBO1(L) and “CB02(R)
so that the level for 1KHz and 10KHz is brought within
+0.5dB for playback.
, After making these adjustment, record and slaybeck at
1KHz, 10KHz and 12.5KHz. Make sure @ results comply
with the following diagram.”
a
NR “OFF”.
lOKH2z::
apart i2SKHz 0
[CrO,
1.
2.
Set the tape selector switch to CrO,...:
Insert. the AC-512 test. tape in the cassette holder and
set the recording conditions. Attenuate from 550mV to
25dB: on Line Out’ with the attenuator and record at
1kHz, .10kHz, 12.5kHz and 7 Ke. on an unrecorded
section of the tape.
~ Rewind. the tape and. adjust CBO1(L) and CB02(R) so
that the level. for. 1kHz and 1OKH2 is brought. within
+0.5dB for playback:
. After making these adjustments, cord and playback at
1kHz, 10kHz, 12.5kHz and 15kHz.: Make sure results
comply with the following diagram.
NR
OFF”
Hz.
12, 5KHz
ISKHz
SdB .
250Hz 1OKHz
12, 5KHz
eee
scape meson

[METAL] : a ee
. Adjust the T ape Selector Switch to M ETAL. ce ne
2, Load the test tape AC-711 into cassette holder. Perform
_Measurements as with CrO,, and make sure they con-
_formwith the Chartinright. 7
NOTE:
Adjustment points for NORMAL, ‘CrOz, METAL are egies al PES
common
with
CBO1(L)'and
CBO2(R).
$48
; eh : se peo ES OR St oa tans
Alignment Points & |
ee eee

5. DIAGRAMS 52
5.1. Block/Level Diagrams
[RECORDING MODE]
LINE OUT
LINE IN
JO2
(dBV ) @)
(6)
[PLAYBACK MODE]
MTT-150
400Hz
200 nwb/m QAO! QAO HEAD PHONE
LINE AMP RVO!
Chip Component Locations
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5.3. Wiring Diagram
TAPE COUNTER
MOTOR MO7I
RIGHT
LEFT
so7l
YEL
POWER SW
YEL
PLAY SW
SO73-2
PAUSE SW
S074
STOP SW
SO73-}
ERASE HEAD
JH72
FF/REW
$o72
SPEAKER
NOO3
JO0O3
stp pig aeons
SUMIX3
JOO4