Mitsubishi E-45P User manual

MITSUBISHI
AIJDIO SYSiTEMSi
SERVICE
MANUAL
INTELIGENT
AUDIO
SYSTEM
E-45P
CONTENTS i
i
sPEctFtcATloNS... ..i... 2
FRONTPANELTERMTNoLoGYANPFUNCTIONS
. . . . . . 3
I
r RECEIVER
SECTION
:MODEIO4NTSP
orsAssEMBLypRocEDURE...l'.. ....... 6
ADJUSTMENTPROCEDURE
...1:. . ....... 7
INTERNAL
DIAGRAMS
AND I
PINOUTOFINTEGRATEDCIRCUITS .....lO
BLocKolAcRAM ....:. .......14
WTRTNGDTAGRAM ........16
SCHEMATICOIAGRAM .....19
PFINTEDCIRCUITBOARD ........25
EXPLODEDVIEWOFCABTNÉ1 ......31
PARTSLIST ......32
AUTO-REVERSETIMINGCHART ....52
WIRINGDIAGRAM .,.....53
SCHEMATICDIAGRAM .....56
PRINTEO
CIRCUITBOARD . . .62
EXPLODEDVIEW
OF MECHANISM . . . 65
MECHANISMPARTSLIST. ....,..66
EXPLODEDVIEWOFCABINET ......67
CABINETPARTSLIST.. ...68
PARTSLIST.. ...69
r RECORD PLAYER SECTION :MODEL LT-45P
DISASSEMBLYPROCEDURE .......71
ADJUSTMENTPROCEDURE .,.....73
INTERNAL DIAGRAMS
AND
PINOUTOFINTEGRATEDCIRCUITS .....71
WIRINGDIAGRAM ...75
SCHEMATICDIAGRAM .....78
PRINTEDCIRCUITBOARD .......81
EXPLODEDVIEWOF TONEARM SECTION . . . . 83
PARTSLIST.. ...84
EXPLOOEDVIEWOFCABINET .. ...85
PARTSLIST,. ...86
PACK|NG|NSTRUCTTONS.... .....88
TSYSTEMCOTIMANDER
SCHEMATICDIAGRAM...
PRTNTED
CIRCUIT
BOARD.
EXPLODED
VIEW
OF
CABIN
35
37
39
40
PARTS LIST
PINOUTOF
INTEGRA
TCASSETTE
TAPE DECK TIOOELDT45P 41
DISASSEMBLY
PROCEOURE
.
DISASSEMBLY
OF MECH
ADJUSTMENT
PROCEDURE
I
TNTERNAL
DIAGRAMS
43
AMlr ELECTRIC
CORPORATION

E.45P
SPECIFICATIONS
DA-RII5P
RECEIVER
AMPLIFIER
SECTION
Min. RMS
pou,êr
output
lnput iensitivity/|
mpedance
AUX
Mlc
TUNER
SECTION
FMtec.tion
Tuningrarge
Usable
sensitivity
(lHF)
Signal
to noiseratio(lHFl
MONO
STEREO
DECK
35 watts oer channel into 8 ohms
loadat 1 kHz with no more than
0.5% total harmonic distortion
150 mV/SOk ohms
1.5
mV/lOk ohms
87.5 - 108 MHz (50 kHz step)
10.8dBf (1.9pv)
80dB
73dB
o.2%
0.5%
1.5
dB
35
dB
50
- 15,000
Hz,
t1 dB
522
- 1,61
1
kHz
(9
kHz
step)
30O
pvlm
35
dB
50dB
155
- 353
kHz
(9
kHz
step)
ACCESSORIES ',
:
GENERAL
Power
supply
Powerconsumption
Dinænsions(WXHxDl
DA-R45P
DT.45P
LT.45P
Weight
DA.R45P
DT.45P
LT-45P
;. T-shap€d FM antenna (aeriall
AM loop antenna
(aerial)
AM loop antenna (aerial)holder
45 BPM adaptor
Batleries
BasLine Cable
22O
V -5O Hz
150W
350
x 118
x 280
mm
(13-3/4x4-518x11"1
350 x 70x 28O
mm
113-314x2-314x11"1
350x 91 x 320mm
113-314x
3-5/8x
11")
7.9kg (17.5 lbs)
3.6kg
(8 lbs)
3.8
kg ( 8.4 lbs)
Total
harmonicdistortion
(75
kHzdwiationl
MONO
STEREO
Capture
ratio
Steroo
3€paration
1
kHz
Frequency
responso
MW3.c{ion
Tuning
range
Senaitivity
(lHFl
Soloctivity
Signalto noise
ratio
LW3cction
Tuningrange
DT.45P
CASSETTE
TAPE
Type
Tapespeed
Signal
to noiseratio
Dolby
NRout
Dolby
NR-8in
DolbyNR-C
in
Frequency
ræponso
Normal
Special
Metal
LT.45P
TURNTABLE
Typ€
Drive
systom
Wow& flutter
Signâl
to noiso
ratio
Tonærm
Cartridge
Tracking
force
4-track. 2-channelstereo
4.76 cm/sec.
(1-7l8 ios)
58dB
68dB
78dB
30- 16,OO0
Hz
30
- 17,000
Hz
30- 18.OOO
Hz
Lineartracking
Beltdrive
O.O4%Wrms
70dB (DrN-B)
Linear lracking, straight, static balance
VM type
1.5
gr
* NoiseReduction
Systern
manufacturedunderlicensefrom
Dolby LaboratoriesLicensingCorporation.
'Dolby' andthe
double-D symbol are trdemarks of Dolby Laboratori€s
LicensingCorporation.
Spæifications
of this unit areaubject
to changewihtout noticefor improvement. Under
License
of
StaarS.4.,
Brûssels,Belgium.
-2-

FRONT PANEL TERMINOLOGYAND FUNCTIONS
TURNTABLE LT45P
1. Tumtoblo Platter
2. Tonearm
3. Function indicator (PHONO)
This indicator
will lightup whenthe player is
operating.
4, SPEED
This indicator shows.therotational speed
of the turntable
5. INVERSE
Normally the unit will automatically be set to 33-l/3 rpm for
30 cm recordsand 45 rpm for 17 cm records. Hon'ever,lhe ro-
tational speed
can be elected manually by presing this button.
6. SENSITIVITY lSenritivity S.læ1 Stflitch)
CASSETTE
TAPEOECK OT45P
7. Function indicrtor (TAPEI
This lndlcator wlll llght up when the rape deck isoperaing.
8. SYIICHRO (ùndrro Rccording Indicrtorl
9, DOLBY t{R BC irdhrtor
Lights when the DOLBY NB switch is set to the "B" or "C"
position.
10. A-stDE-B
Right
hand
arrow ( F )will light up whensrdeA
isoperating
Left handarrow ( € ) will light up when sideB is
operating.
11. REIY (trpe rowind buttonl
Pressthis button to rewind thetape
12. DOLBY NB IDOLBY NB rwitch)
13. TAPESELECTOR
Special: For special
or chrome tape.
Normal: For normal
tape
lretel: For melal taqe
T4. BEAT CANCEL
When recording MW or LW broadcasts,
setto the posilion where
the beat sound isheardthe leasl.
l4
l3
12
1l

INTERNAL
DIAGRAMS
AND PINOUT
OF
lGt:LAl235
(Tuner
Circuit)
INTEGRATED
CIRCUIT
lG3:
[At245
(Tuner
Circuit]
lC2:
L43370
(Tuner
Gircuitl
lG4:
M54927P
(Tuner
Gircuitl
Berel+
cPs-+
lÉM+
retFM+
tAM.+
refair.+
Sl+
GNO
Vcc
+-X.tN
eX.OUT
NC
->AM/FEi
-+Læk
+PD
eTest
ouT

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MODEL DA.RISP
No. Measured
item Input/Outputand
procedure Point
of
adjurtment Adjurtment for Remarks
10 LW
Coveraç
Adlustment
o Setthe
function
to theLW
position
and
200kHz
inthestateof reception.
o ConnecttheDCvoltmeter
to TP9
and
TP3
(GND).
L99 Adjust sothat
the voltage
becomes
1.0v10.05
11 a As in the above
step,
set
the unit in the
reception
statewhose
maximum receiving
frequency is
400kHz.
TC99 Adjust so that
the output
voltagebecomes
9.0vt0.1v.
12 Adjustbyrepeating
the
steps
10
and
11alternately
sothat
the
output
voltage
becomeswithin
the
specified
range.
13 LW
Tracking
Adjustment
o Radiateeachof thetracking point
frequencies
given
below
from theAM testloopantennato
L98.
(signal
level60dB/m)
o Receive
eachof thetracking
point
freguencies
given
below
by meansof the
Tenkey
or Tuning
Up/Down
Switch.
o ConnecttheACvoltmeter
to TPI (Lch)
or
TP2
(R
ch)
and
TP3
(GND).
' Tracking
point
frequency
344kHz
200kHz
161
kHz
L98
TCg8 Adjustsothat
the
output
is
maximized
at
each
tracking
point.
14 Repeatadjustmentateach
tracking
point
alternately.
15 AM IF
Wave
form
Adjustment
o Setthe
function
to theMW
position
and
999kHz
in
the
state
of reception.
o Connect
the
AMtestloop
antennato the
output
terminalof thesweep
generater
and
radiate
the
450kHz
signal
to theL8.
Connect
the
input
terminalof genescope
between
theTP7andTP3andcheck to ensure
thatthewaveform
showsasymmetrybetween
theright
and
left
with450kHzas
itscenter.
T1
T2 Adjust sothat right and left
are
symmetrical
and the trough
ismaximized.
lf not
symmetrical,
readjust
by
varying
Tl and
T2 within the
ranç of
450kHztl kHz
to movethe
crestsothat a
symmetry is
obtained
between the
right and left
andthe trough
is
maximized.
16 FM MPX
FrecRun
Frequency
Adjustment
. SettheFM
signal
generator
to 98.00MH2
and
connect
it to theFM
antenna
terminalthrough
the
300f2balanceddummy.
(signal
levell mV)
o Setthefunction
to theFMposition
and
98.00MH2
inthestate of reception.
. Connect
the
frequencycountcr
to TPl0 and
TP3
(GND).
VRl Adjustsothat
the
frequency
becomesl9kHz
+0.5kH2.
17 Separation
Adju*ment . Connect
thestereosignalmodulator
to theFM
signal
generator.
Connect
the
98.00MH2lmV
signal
to theFM antennaterminal
throughthe
300O balanceddummy.
. Setthe
function
to theFMposition
and
98.00MH2inthestateof reception.
o Connect
theAC
voltmeter
andoscilloscope
to TPI (L
ch),
TP2
(R
ch)
andTP3
(GNDl.
VR2 Adjustso
that
LchandRch
scparationis
maximized.

40
39
38
3736
59
v575655
49
48
SYSTEM
COMMANDER
36. POWER lPowcr
rwitchl
37. PHONO
Pressthis
butlon when
youwishto listen
to records.
38. CD
Pressthisbuttonwhen
youwish
to listen to compact
disks.
39. TAPESIDEA
Pressthisbuttonto reprodr.lceoractivatesideA of thetape.
'IO. TAPESIDE
B
Pressthisbuttonto reproduceoractivate
sideBof thetape.
41. FM
Pressthis
buttonto listento FMbroadcasts.
42. l,lw
Pressthis
buttonto receive
MWbroadcast.
r*t- Lw
Pressthisbuttonto receiveLWbroadcasts.
rl4. AUX
Pressthis button to listen to the devicesconnected to theex-
terrial
input
terminals
(AUX
1,2,
3I on the
reâr
panel.
45. STOP
Press
this button to carrcelall operations or recordingof the
sourceselectedbytheFUNCTION
button.
46. REPEAT/REVERSE
Pressingthis
buttonwillalternate
playback
between
PHONO
and
CD.lt isalso used
for theauto-reverse
playback
functionof sides
A and
Bof thetape.
47. VOLUME (volumc control buttonl
Pressing
thisbutton will cause
thevolumele\æl
to hre
displayed
on the indicator
(21)-
Thevolumecanbeadjusted
by onelevel
each
time the button ispressed.
Holding
it down
will allowcon-
tinuousconrol overthe
volume
âdjustment.
.18. ÙIANUAL (Mrnud Acccbuttonl
Thls button allows
the deslred
selectlon
ln the PHONO,CD,
or
TAPE mode to be selected.lt chsngps
the FM, irlWor LW re-
c€ptionfrquency onestepeach
tlm€ lt lspress€d.
109. AUTO ACCESS(Aulo Ar bunon)
Thls
button EllouB
playback
to begln
from thebeginnlngof the
pr€sent
selectlon
or th€ next selectlon
ln the PHONO,
CD,or
TAPE mode.lt alsoallows
for automatlc
selectionof FM, MW
or LWstations.
50. REC
START(REC
nert buttonl
Recording
will start when
this
buttonis
pressed.
5'. AUTOPAUSE
Pressing
thisbuttonwill automatically
create
afive
second
blank
space
on the taperecording,
and setthe unit to the recording
standby
modeor theSynchrorecording
mode
52. TIMEADJUST
Pressing
this
buttonenables
the
present
time
to be
adjusted.
53. SLEEP
Pressing
this button enables
thetimesetting
of thesleeptimer
to be
made.
54. WAKE
UP
Pressing
this button €nables
the time setting
of theWAKE Up
timer
to be
made.
55. TUNING
iIEiIORY
Pressingthis bulton enables
radiôbroadcaststations
to been-
teredintothepresets.
56. TUNER
REC1
Pressing
this button enables
absenteerecordings
to be made
at
thepreset
time.
57. TUIIIER RÊC2
Pressing
this button enables
absenteerecordings
to b€made
at
thepresel
time.
58, TEN
KEYS.
Press
thesekeys
when
setting
thêtime,selecting
a tune,selecting
a broadcast
station,or when
selecting
devices
connected
to the
auxiliary
inputterminals.
se.
E] x"v
Whensettingthe time. press
this key beforeprogressing
to the
next
step.
lf this key isused
asa value
of ten for the
program
select
func-
tlonsor RECORD,
CD or TAPEfunctlons,
up to plece
number
15canbeselected.
60. lndir:rtor
Thislndlcator
will lightup when
anyof thesystem
commander
buttonssrepressed.
-5-

RECEIVER
SECTION:
MODELDA-R4SP
DISASSEMBLY
PROCEDUREFORDA-R4sP
1. Removing the top cover
1) Removethe seven
top cover fixing screwsCas shown
in Fig. 1.
2) The top cover can now be removedby pulling it for-
ward.
Fis.I
2) As shown
in Fig.3, after thetwo tuner
circuitboard
fixingscrews
@ n.u" beenremoved,
thefront panel,
together
with the indicatorassembly
andthegraphic
equalizercircuitboard.
canbe
pulled
forward.
3) Once
the flat cablesand
therespective connectors
are
removed,thefront panel
canberemoved.
Tun€r circuit board
Graphic
equalizer
circuit board
Indicator
assemblv
Fis.3
2. BemoYing
thefront panel
1) After the top cover has been removed.removethe
threefront panel
fixing screws
@ andthefour screws
@as shown
inFig. 2.
sc.e*sO

ADJUSTMENT
PROCEDURE
FOR DA.R4s,P
Beforeadiustmont
. Set
themodulation
of theAM signal
generator
to 4OOHZ,
3096.
ConnecttheAM testloop
antenna
to theAM signal
generator.
o Setthe
modulation
of theFM
signal
çneratorto 1kHz,
1OO%.
Each
set
cannotbe
adjusted
Thecommander
isnecessary
indipendently.
The
setsmust
be
connected
with thesignafcable.
for operation.
No. Measured
item InpuVOutput andprocedure Point
of
adiustment Adiustment for Remarkt
1AM
IF
Adjustment
. Setthe AM signal
generator
to 999kHz
t0.SkHzandradiate
to LBby means
of the
AM testloopantenna.
(signal
level100d8/m)
o Connect
the
ACvoltmeter
to TPI(Lch)
or
TP2
(R
ch)and
TP3
(GND).
. Set
thefunctionto the MW
position
and
999kHz
inthestateof reception.
T1
12 Adjust sothat
theoutput is
maximized.
2FM
IF
Adjurtment
o SettheFM
signal
generator
to 98.00MH2
and
connectit to the FMantenna
terminal
through
the
300S1
balanced
dummy.
(signal
levell mV)
o Setthefunctionto the FMposition
and
98.00MH2
inthestateof reception.
o Connect
thedistortionmeter
to TPI (L ch)or
TP2
(R
ch)and
TP3
(GND).
. Connectthe DCvoltmeter
to TP4and
TPS.
L3 Adjust
so
that
theoutput
voltage
becames
0vr 0.05v.
3L2 Adjust
so
that
thedistortionis
minimized.
4Adjustby repeating
thesteps2 and3alternately
sothat theoutput voltage
becomes
within the
specified
range
andthedistortionisminimized.
5MW
Cover4e
Adjustment
. Withthefunction setto the MW
position,
set
theunit in thereception
statewhoseminimum
receivingfrequency
is
522kHz.
o Connect
the DCvolmeter
to TPGand
TP3
(GND).
L7 Adjustsothat
theoutput
voltage
becomes
1.0vr0.05v.
6o Asin theabove
step,
settheunit inthe recep-
tion statewhosemaximumreceiving frequency
is
161
l
kHz.
TCl Adiust
sothat
theoutput
voltage
becomes
9.OVr0.1V.
7Adlustby repeating
thesteps5and
6 alternatelysothat theoutput voltagebecomes
within the
specified
range.
IMW
Tradcing
Adjustment
o Radiate
each
of thetracking
pointfrequencies
given
belowfrom the AM testloopantenna
to L8. (signal
level56dB/m)
o Receive
each
of thetracking
point frequencies
given
belowby means of theTenkeyor Tuning
Up/DownSwitch.
. Connectthe ACvoltmeter
to TPl (L chl or
TP2
(R
chlandTP3
{GND).
' Tracking
pointfrequency
1404kHz
999kHz
603kHz
L8
TC2 Adjust sothat
theoutput
ismaximized
at each tracking
point.
IRepeat
adiustment
ateachtracking
pointalternately.
-7