Marantz ST440 User manual

EINGEGAN6Eti 2 p. Mârt 1985.
" MANUAL

MARANTZ DESIGN AND SERVICE
Using superior design and selected hi gh 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 equipment are generally available to our National Marantz Subsidiary or Agent.
ORDERING PARTS:
Parts can be ordered either by mail or by telex. ln
both cases, MARANTZ part number has to be specified. If you arder by
mail, fulfil MARANTi arder forms.·
MARANTZ S.A.
EUROPEAN PARTS DEPARTMENT
2, Avenue Léopold
Ill
SUPERSCOPE NATIONAL PARTS DEPARTMENT
20525 Nordhoff Street
Chatsworth, California 91311
B-7120 PERONNES-lez-BINCHE
BELGIUM Phone: [phone]
Phone: [phone]
TWX:
57589 SEPLT 8
The following information must be supplied to eliminate delays in processing your order :
1. Complete address
2. Complete part numbers·and quantities required
3. Description of parts
4. Madel number for which partis required
5. Way of shipment
6. Signature: any arder form or telex must be signed otherwise such part order wrll be considered as null and void.
PARTS ORDERING:
Parts may be ordered from
the following addresses:
EUROPE
MARANTZ S.A.
MARANTZ DENMARK MARANTZ BELGIUM
European Parts Department Bregnerllldvej 1
32b
45 Rue Au gu ste Van Zande
2. Avenue Léopold Ill 3460 Birkeqild 1
080 Brusse ls
B
-7 120 Péronnes-lez-Binche Denmark Belgium
Belgium Telex: 39137
Telex: 57589
MARANTZ S.A.
MARANTZ FRANCE
MARANTZ SVENSKA A.B.
326 Avenue Louise Bte 32 4 Rue Bernard Pal
issy
Svartvi ksvage n 56
1 050 Bruxelles
92600 Asnièr es
Traneberg Bromma
Belgium Fran
ce
Sweden
Telex: 26602 Tel
ex : 611651 Telex: 13449
MARANTZ AUDIO U.K. LTO.
Unit 1 5/ 16 AUSTRAL!A
Saxon Way 1ndustrial Estate
Moor L
ane
Harmondsworth UB7 OLW
Great Britain
Tel
ex : 935196
MARANTZ AUSTRALIA l'TV ., L TD .
19 Chard Roa d
Brookvale,
NSW 2100
Australia
Telex: 24121
MARANTZ NEDERLAND B.V.
Wage nmackersweg 3
3449
H.V. Waerden
Netherlan
ds
MARANTZ ITALIANA S.p.A.
Via Mo nt e Napoleone, 10
20121 Milano
ltalia
U.S.A.
MARANTZ COMPANY, INC.
Nation al Service Dept.
P.O. B
ox 577
Cha tsworth, CA 913 11
U.S.A.
T
el ex: 4720284
MARANTZ AUSTRIA Ge .M.B.H.
25 Franz Liszt gasse
2380 Perchtoldsdorf
Austria
Telex: 113583
MARANTZ GERMANY G.M.B.H.
Max-Pianckst rasse 22
6072 Dreieich 1
Germany
Telex:
4185316
JAPAN
MARANTZ JAPAN, INC.
35-1. 7 -c home, Sagam iono
Sagami h ara-s hi, Ka n agawa
Japan
Telex: 22878
Ali of the above locations are fully equipped to take care of your total service needs. Because various countries have differing
configuration requirements, it is necessary
th at you contact the service facility in y our particular country. ln the event that
there is np service location listed for your country , please, contact the nearest facility for the necessary assistance.
NOTE-FOR U.S.A. ONLY
ln case of difficulties,
do not hesitate to contact the Technical
Department
at abovementioned address.
Parts for
your MARANTZ stereo are generally available within 72 hours throughout the nation via a toll-free line to our
National Parts Depot in California. The sales professionals who take your cali immediately refer to their own desk top
computer terminal and can quickly determine the availability and priee information you require. If, for sorne reason, your
arder should exœed our available stock, we usually can instantly provide an alternate replacement part or current delivery
information. When the
arder is placed and confirmed, the computer simultaneously generates "hard copy" orders at the
distribution center. As hard copies come directly from the computer to the national parts depot , your requested stock is
assembled and prepared for shipment and placed on the first available carrier for delivery to you.
Phone orders will eliminate mail delays, and we encourage
the use of this method. If you arder by mai l, use MARANTZ
parts
arder forms which are available from SUPERSCOPE NATIONAL PARTS DEPARTMENT.
••• .._ .. .._ ... z ®

SECTION
INTRODUCTION
TABLE OF CONTENTS
PAGE
1. SHOCK, FIRE HAZARD SERVICE TEST .......................................... 1
2. P.W. BOARDS ..... . ............................................................ 1
3. TEST EQUIPMENT REQUIRED FOR SERVICING ................................... 2
4. TUNER ALIGNMENT PROCEDURES .............................................. 2
5. TEST POINT AND ALIGNMENT POINTS .......................................... 4
6. CIRCUIT DESCRIPTION .......................................•................. 5
7. VOLTAGE CONVERSION ........................................................ 8
8. BLOCK DIAGRAM .............................................................. 9
9. SCHEMATIC DIAGRAM AND COMPONENT LOCATIONS ........................... 10
9.1 Power Switch Assembly
(PUOO) Schematic Diagram and Component Locations ........................ 10
9.2 Preset
Key Switch Assembly (PSOO) Schematic Diagram and Component Locations ..................... 10
9.3 Tuner Assembly (P100) Schematic Diagram and Component Locations
........ . ..................... 12
10. EXPLODED VIEW AND PARTS LIST ............................................ 18
11. ELECTRICAL PARTS LIST ..................................................... 20
12. TECHNICAL SPECIFICATIONS .................................................. 24
13. SCHEMATIC DIAGRAM ........................................................ 26

MODEL ST440/ST440L STEREOPHONJC TUNER
••
INTRODUCTION
This service manual was prepared for use by Authorized
Warranty Stations and contains service
inlbrmation for
the Marantz Mode! ST440/ST440L Stereophonie Tuner.
Servicing
information and voltage data included in this
manual
are intended for use by knowledgeable and ex-
perienced personnel only. Ali instructions should be read
carefully. No attempt should be made to proceed without
a good understanding of circuitry operation.
The parts list furnishes complete ordering
information.
Most replacement parts should be ordered from the
Marantz Company. However, a simple description
is in-
cluded
for parts which can be obtained locally.
1. SHOCK, FIRE HAZARD SERVICE TEST:
CAUTION: After servicing this appliance and prior to
returning to customer, measure the resistance between
either
primary AC cord connector pins (with unit NOT
connected to AC mains and its Power switch ON). and the
face
or front Panel of product and controls and chassis
bottom.
Any resistance measurement less than 1 Megohms should
cause unit to be repaired orcorrected before AC power is
applied, and verified before return to user/customer.
Ref. UL Standard No. 1270.
Para. 66. 3. D (Mandatory
Test after servicing Electrical Appliances, effective 7-1-88).
2. P.W. BOARDS
As can be seen from the circuit diagram the chassis of
Mode! ST440/ST440L consists ofthe following units. Each
unit mounted on a printed circuit board is described within
the square enclosed by a bold dotted line on the circuit
diagram.
1. Tuner .......... .. mounted on P.W. Board P100
2.
Preset Key Switch . ... mounted on P.W. Board PSOO
3. Power Switch . ...... mounted on P.W. Board PUOO

3. TEST EOUIPMENT REOUIRED FOR SERVICING
Item
Use
AM Signal Generator Signal source
for AM alignment
Test
Loop
Use with AM signal generator
FM Signal Generator Signal source
for FM alignment
MPX Signal Generator Stereo separation alignment and
trouble shooting
Distortion Analyzer
Distortion measurements
Audio Oscillator Sinewave and squarewave signal source
ACVTVM
Voltage measurements (AC)
Oscilloscope Waveform analysis and
trouble shooting and ASO alignment
Frequency
Counter
MPX oscillator adjustment (VCO)
Circuit Tester
Trouble shooting
DCVTVM Voltage measurements (OC)
AC Wattmeter
Monitors primary power to tuner
Line Voltmeter Monitors potential of primary power to tuner
Variable
Autotransformer (0 ~ 140V AC, 10A) Adjusts level of primary power to tuner
4. TUNER ALIGNMENT PROCEDURES
A dummy resistor of 47 kohms must be connected across the tuner output terminais before alignment.
4.1
FM Alignment Procedures (Function switch in the "FM" position, MODE switch in the MONO position.)
1.
FMRFAiignment
Step Signal Source Signal
lndicator Set the Digital
Adjust:
Connection
Frequency
Connection Readout Frequency
FM signal generator to FM
antenna terminal (300nl
through matching network
VTVM to Lor R
FRONT END IFT(L8)for
1 Set
the SG RF output
98 . 00 MHz chnnel output
98 . 00 MHz
maximum output and
level so
that sorne noise
can be observed on
the
(J102)
minimum distortion.
upper and lovver side of
the output waveform .
FM signal generator 1 mV
output to FM antenna
"0 " center meter
terminal (300nl through or OC current meter
L201 (Primary) core so
2 matching network
98 . 00 MHz in 100 1-1A range 98 . 00 MHz
th at the meter ind icates its
Modulation Level between center
or may read "0" .
DIN 40kHz
DEV .
(J201, J202)
IHF
75kHz OEV .
FM signal generator 1 mV
Distortion meter to
L201 (Secondary) core
3
output to FM antenna
98 . 00 MHz L or R channel output 98 . 00 MHz
for minimum distortion .
terminal (300n) through
matching network.
(J102)
2

4.2 Muting Level Alignment (Function switch in the "FM" position, MODE switch in the "AUTO STEREO" position.)
Step Signal Source Signal
lndicator
Set the Digital
Adjust:
Connection Frequency Connection
Readout Frequency
FM signal generator
12.5~JV output to
VTVM to Lor R
1
FM antenna terminal
98.00 MHz
channel output
98 . 00 MHz
Adjust R216 until
through matching
(J102)
output is developed.
network
(300 ohm , balanced)
4.3 Multiplex Alignment Procedures (Function switch in the "FM" position, MODE switch in the "AUTO STEREO" position.)
Step Signal Source Signal
lndicator
Connection Frequency
Connection
FM signal generator Frequency
counter
1 1
mV output modulated
No modulation
to (J301 l
by MPX signal generator
to FM antenna terminal
Stereo left
VTVM to right
(30011) through
2 matching
network
(1,000 Hz) channel
output
Modulation Leve! (J102 R ch)
OIN 40 kHz+8 % Pilot OEV .
VTVM to left
3
IHF 67. 5kHz+9 % Pilot OEV . Stereo right
channel output
(1 , 000 Hz) (J102
Lch)
4.4 AM Alignment Procedures (Function switch in the "AM" position.)
1.
AM 1F Alignment
Step Signal Source Signal
lndicator
Connection
Frequency
Connection
1 Sweep gener
ator to
450 kHz marker Oscilloscope
to
AM Antenna Terminal.
(JA01)
2. AM Local Oscillator Alignment
Step Signal Source Signal
lndicator
Connection
Frequency
Connection
OC voltmeter in
1 ---
---
3V range to
(J501, J502)
3. AM RF Alignment
Step Signal Source Signal
lndicator
Connection Frequency Connection
1
Apply the signal to the
603kHz
AM loop antenna from
(600kHz)
VTVM to Lor R
the AM signal generator channel
output
2 using
the test loop .
1,404 kHz
(J102)
(1 , 400 kHz)
3 Repeat steps 1 and 2.
Set
the Digital
Readout Frequency
98 . 00 MHz
Set the Digital
Readout Frequency
---
Set the Digital
Readout Frequency
522kHz
(520kHz)
Set the Digital
Readout Frequency
603kHz
(600kHz)
1.404 kHz
(1,400 kHz)
4. LW Local Oscillator Alignment (Function switch in the "LW" position) ST440L Only
Step Signal Source Signal
lndicator
Set the Digital
Connection Frequency Connection
Readout Frequency
OC voltme ter in
1 3 V range
to
153kHz
(J501, J502)
3
Ad just :
R303 so that
Frequency may precisely
read
19,000 kHz ± 10 Hz
R317 or same separati on
in both channels.
Ad just :
LAOS
for maximum and
symmetric response.
Ad just :
LA01 for 1.0 V
Ad just:
LA03 for
max i mum ou t put .
CA01-1
for
maximum output;
Ad just:
LA02 for 1.5 V.

5. LW RF Alignment (Function switch in the "LW" position) ST440L Only
Step
Signal Source
Signal
lndicator Set the Digital Adjust:
Connection
Frequency
Connection
Readout Frequency
1 Apply
the signal to the
270kHz
270kHz
CA29-2 for
VTVM
to Lor R maximum
output.
AM loop antenna from the
channel output
RF generator using the
(J104) LA04 for
2
test loop. 170kHz 170kHz
maximum output .
3 Repeat steps 1
and 2 as necessary to obtain maximum sensitivity.
6. AM Signal Alignment (Function switch in the "AM" position)
Step
Signal Source Signal
lndicator
Set the Digital Adjust:
Connection Frequency
Connection Readout Frequency
Apply a signal to the
Adjust RA14 so that
1
AM loop antenna from the
999kHz
-- -
999kHz
RF generator via the test
5 signal LEDs light.
test loop. 5 mV signal
5. TEST POINT AND ALIGNMENT POINTS
4

6. CIRCUIT DESCRIPTION
• TC9158P C-MOS DigitaiiC Silicon Monothilic
1. Dynamic Driver TC9158P (OS01)
for indicating reception frequencies
TC9158P
is a driver for indicating reception frequencies developed for use in DTS-6/8. The driver latches seriai data
transfered from system controller LSI,
computes and corrects intermediate frequency, and indicates data. With built-in
driver, there
is no need for additional transistor.
• Maximum Ratings (Ta=25°C)
Characteristic
Supply Voltage
Input Voltage
Output Voltage
Output Current (Note)
Power Dissipation
Operating Temperature
Storage Temperature
• Block Diagram
ose
DATA
CK- 1
CK-2
voo
GND
DECORDER
COUNTER
Symbol Ratings Unit
Voo
7 v
viN
-0.3 "' V DO+ 0.3 v
VoL
loH
Po
Topr
Tstg
Tz T3
T4
DIGIT OUTPUT
GENERATOR CIRCUIT
Voo -35
v
50
mA
350
mW
-30"' 75
oc
-55"' 125
oc
A 8 c
MULTIPLEXER
INDICATION REGISTER
D
BINARY TO BCD/IF OFF SET/MARK DATA ROM
5
• Pin Connections
GND voo
ose
Tl
DATA
T2
CK- 1 T3
CK-2 T4
G T5
F A
E 8
D c
E F G
LATCH

• Pin Description
Pin No.
Na me
Functional Description Remarks
2
ose
One-terminal oscillation-circuit input terminal
for digit signal output.
3
DATA
Receiving frequency data signal input.
CK-1
4,5
CK-2
Timing clock signal input.
Input circuit
6~ 12
A~G
Segment drive signal output.
Built-in high
pressure-resistant
13 ~ 17 T1
~T
5
Digit signal output terminal. transistor.
1, 18
Voo
Power supply GND.
GND
• Electrical Characteristics (Unless otherwise specified, V
00
=5V, Ta=25°C)
Characteristic Symbol Test
Circuit Test Condition Min.
Typ. Max. Unit
Operating Supply Voltage
Voo
-
Ta=-30 ~ 75°C 4 5 6 v
Operating Supply Current
loo
-
No load
tose=50kHz
-0.2 1.0
mA
"H" Level
ViH
-
DATA, CK-1, eK-2 4.0 -5.3 v
Input Voltage
"L" Level
ViL
-
DATA, CK-1, CK-2 -0.3
-1.0 v
"H" Level
IIH
-
DATA, CK-1, CK-2, ViW5V
- - ±1 p. A
Input Current
"L" Level
IlL
-
DATA, eK-1, CK-2, V1L=OV --
±1 p. A
Timing Input Frequency
fopr
-
DATA, CK-1, CK-2
-25 100 kHz
OSe Oscillation Frequency
tose
-
Rx=24KU, Cx=1200pF
-50 -kHz
T1 ~Ts. Vow3V
3 5 -
mA
Output Current
loH
1
A~G. VoH=3V 10 15 -
mA
Leak eurrent
loL
-T1 ~
T5, A~ G, VoL =-27V
- - ±10 p. A
6

2. Function
If reception frequency is renewed by system controller LSI, timing signais indicated below and seriai data are transferred
by one cycle only.
CK- 1
CK-2
DATA
START SIGNAL
2.1 Data signal
FREQUENCY DATA SIGNAL
1 CYCLE= 1.8 ms
RECEPTION
BAND
SIGNALS
Data signal is composed of 17 bits, of which 12 bits are for frequency data and 5 bits are for reception bànd signais (LW/
FMJ/FM U/ AM9/ AM 1 0).
DO D1 D2 . D4 D8 Dl6 D32 D64 Dl28 D2!16 DSI2 DI024 . LW FMJ FMU/E AM9 A MIO
DATA
FREQUENCY DATA 12a
2.2 Timing signais (CK-1, CK- 2)
Data signais are loaded with the timing shown below.
DATA
x
DO
x
CK- 1
_j
Lil
n
CK- 2
1~
5b
-1 blblblblbl-
7
Dl
5b
a =100)J sec
x D2
n
RECEIVING BAND
DATA 5a
x D4
n
-1
b= 20p sec

7. VOLTAGE CONVERSION
• EUROPEAN MODEL ONLY
To convert the unit to a different power source voltage,
change
the position as illustrated in the drawing below. CAUTION
DISCONNECT POWER SUPPLY CORD FROM AC
OUTLET BEFORE CONVERTING VOLTAGE.
Voltage Conversion
Chart
220-
240 V"'
II0-
120V"'
VOLTAGE
SELECTOR
Note on safety: Symbol & Fi re or electrical shock hazard. Only original parts
should be used
to replace any part marked with symbol & .
Any other component substitution (other than original
type). may increase risk of tire or electrical shock hazard.
8

8. BLOCK DIAGRAM
-
1 75.!1 o-n '
FM
,...
L 1
FM RF
300.tl
,...
AMP
~
G
~
AM
~
-
cr==-
-
AM
LOOP ANTENNA
Y
AM RF
AMP
L......------1
AGC
FM
MIXER
FM IF
AMP
FM
DETECTOR
MUTING ~
SEPARATION
LEVEL ~~
ADJ.
FM 1
LOCAL
L--o;.,s~c-.j
1 BUFFER L
AMP ~
1
AM SUB
IF AMP
AM 1 1 AM IF
MIXER jHI--~~~ AMP
Y
FM J- STATION
DETECTOR
AM ~~
STATION
DETECTOR
ADJ.
~
PLL- MPX ...À
STEREO 1 / 1
DECODER
l
POST
J
AMP STEREO
LED
'1 MUTING 1
CIRCUIT
L~
L CH
OUTP
fo
R CH
'--
FROM R CH
SIGNAL STRENGTH LED
j SIGNAL ~++~~~~~~~]
L-----~----~ LED ~ ~ ~ ~ ~ 1
1 DRIVER 1
11/30 I/32JI ___ ..,
IPRE. SCALERj
-
_L_ X' TAL
c:::::J
-y- 7.2MHz
-.-
1 BUFFER 1
AMP
'------1~ PLL SYNTHESIZER 1---
CONTROLLER
UT
1
MW
LOCAL
ose
1
L-_Lg;.,rr-'~-L__,
1
ri L. P. F :~-----------__J
LJ D1S PL AY ~t-------,
Î DRIVER 1
CONTROL KEY SWITCH
UP
DOWN
MEMORY c:::::!!::::::.
PRESET 0 0
FM.
MW. LW.
9
-
FM 1 1 1 LI n ~
r: 1 Cl Uo 0 éi ttf:z

C DIAGRAM AND COMPONENT LOCATIONS
9.1 Power Switch Assembly (PUOO)
Schematic Diagram and Component Locations
~~'
if J}~
POWER
STAND8Y
10
,, '" ""' '. ,l
'T ""'l'" G··~~~ ·~i ~i'ï'j""
L:: L
: '
'
'
'
' '
' i
' '
: 1
1
1
'
i
'
' '
' 1
l _ __ _j
t
~~'" " o
0501
. <V
OFF{-,l<fV )
<tf . -IV
RSO.? .J,evr;? QS03
r ov~ .f.•v
ME~ RY F OVI
LJ:____.________. __
11

1,
1
1
1
"
0. 02
b __
C$14
0.0 1
;,,.,
ro.oz
..
"'
t--
. ·~
llO•...., 120k
I[J.t,
flf )
CIS ISp
8
ltiOI
----- ________ ____j
CA05
470p
~C.t.06
r • ap
":t'---- ------'
1t520 •n
~
;""
33/16V
tltto6 • o•
L ___ _j
12
"'
·"
0502
(.~~ ~"·~J
~~rr
"" r1C!!10'7 csoe ._ L-
47 UOIIOV 2200P r CSIS
,.
JCSOI~
r.2 .. T
13

14 15

rl!O I
1
1
l
1
1
R7
2.7k
Cl6
33P
Rt
330
-
~10
330k- 1210k
o'i'J =~
81
R202 1 10
1 [l.t . IV]
'~>'" 1.
1
1
R218
1004<
C203
0.01
CA27
0.01
CA30
2210p
C30~
1
470p
R30! ~
11
R304 15k
[0.6V) 0203
R221 61k - ~~V~)...---~-+---f-+----t---,
RA210
61k
4)JA03
C304
~v
R316
47k
R319
47k
~:18
ov!?~OYV'----------l
0302
!uMANUAL AUTO
0 MUTE
OFF
ON
ov
~0304
Jl02
,---
IAIOI_ · - 5
------- ------ · ------ ____J ,
~AIS
l!lk •
RAil
: 100
RA22 ~
68k ~2~0A03
RA~
22k (0.4VJ RA~
L
RA2!1 RA21
8tf''"
QA05
RA26 r
IOk ;:!;;,
5102 IIMON~TEAEO
~~ J
~H-+-1-+++---~- ... -- ---------------------------------- _- _- -- ----_-_ ...... --' ----- ----- .
CA35
0.47/50V
+n
RAH
lOOk
QA09
RA36
IOk
\::!;
RA!I
l OOk
fW -~~- - -w- ---- ~---~-
RA02
CAOli.,OOI lOOk JAOI
.. -; !le 'A~~'
~ sr ~~~ CA09 0A02
CA0!_.t0. 01 - ~ ,.. J ~~ '\
1 ! .. \t:J
r- j 1 fO.WJ
OAOI i:r l RAO!
L ___ _/ lM
!,CAIO
Lo . O.I
.......
UOII"'""'! ~_î
CA34 c OA03 RA!O
+ 0. 47 / !IOV QAOl i ~ ~- IOk
FA~
RA31
IOk
~!! f~ 0508(~ ~:09
rr
OA07 ~
1 /Uo4
/' LA03 '-r--1~-"1
0506
(5}J+!o::.:·""~----11-+-----...;;;.~l!O~e ~~ .... • --------if---+--t--,
o
1
CAOI J R~~~--~~~ - ~~~~----~------~----------~----------~---+--r---r---~,_-------------------r--r--rt--r~~
CAOI-2 Ï6p_;-
2
- - CAOI-1
[tiV"'I.0VJ +~l R~
AA34 10k~6 fi . OV~I.OVJ 2. 27l!Ov . lk
L++----rÀ-~ .... --+ ...----+-- ... -- .. _ _. LW/ . $1'-l'JV ..___.iL~---' OA04
~ C!IIO 0.0&8·.----_..:.--I-J------------"'""-------ol--t*""t--t---+--f-t-+-------------t-;;::;::;:"
~" ~~
1 2
.. ceo5 r •0809 R!l:8.,: ,-
1 +-220/IOV '----~,..(~~ 5
R520 4711
(/<# , IV/
---r\ A(i:,. .w]
!r•w'f ~ 05<>
4
~
C513
33/ l fV
, R8011 IOk
uv o;;~...._'~~~~&,.,.~e--<~0-t@-1:0
t-~-80-2---~-0V"""~""'P'-IIV_Q_80 __ 3-, R517 ~~ .. :.:.~-"------!1-++--------jH-'
680 rt IOk tRSI'
12WI 14•6V R804 lk f'47k
&, Re~i .>r---f=~----Yt\----+-----'------1-+1
0502
u _v <V uvu~
· ,~ ' 7
R503 :--J:t CW7 1 CliO&. , l.__
47 : · p
20110
v zzoo,·- : ~c~s ·
Rll05 10tfi4..W.
!!!Cl!OI
r47p
[4:'V]~
[p . 6V] 0503 : ~~~2 ..__ __ ~--'
fOVJ X!IOI ëé:;
Rll04 7.2M . =;=
47k _l_
~--~r----------10-~~
~~ "+
6 0801
1
,1, 0804
Wl03 1 :>
:>05·---- ____ ..., ---------- ____ ._,oz_ , ~bb s
Lt. 0803
R807
310 -HV
_.,6v~-341'
l Lt. 0802
CI/2WJ
L __ ........___j
16 17

10. EXPLODED VIEW AND PARTS LIST
• [P01-99] Front Panei/Chassis and Packing Materials
ST440L, ONLY
~soo
~ / ~ ·
PACKING
REF.
Q'TY
PART NO.
DESCRIPTION
DESIG. u N A
REF.
Q'TY
PART NO.
DESCRIPTION
DESIG. U N A
A 1 1 1
448H248400
Front Panel Assembly [ST440]
001S 1
448H801020
Packing Case [ST440]
Al 1
449H248400
Front Panel Assembly [ST440L]
001S 1 1
448H801010
Packing Case [ST440]
001B 1 1 1
448H248010
Front Panel [ST440]
001S 1
449H801010
Packing Case [ST440L]
001B 1 449H248010
Front Panel [ST440Ll
002S 1 1 1
417H809010
Cushion, R
002B 1 1 1 448H063020
Escutcheon 003S 1 1 1
417H809020
Cushion, L
003B
1 1 1
448H158010 Window
004S 1 1 1
9090808030
Polyethylene Sheet
008B
2 2 2
158T355010
Lens, Band Select [ST440]
005S 2
9526019010
Seriai No . Card [ST440]
0088 3 158T355010
Lens, Band Select [ST440Ll
005S
4
9526019060
Seriai No . Card
005S 4
9526019030
Seriai No. Card (ST440]
006S 1
2918107390
Sheet, ACCord
006B 1 1 1 158T270010
Button, Power Stanby
007B 2 2 2
448H270010
Button, Band Select (ST440]
001T 1 1
448H851310
User Manual
007B 3
448H270010
Button , Band Select [ST440Ll
002T 1 1
448H851320
User Manual, Spec.
009B 1 1 1 242H270020
Button, Scan/Mode
003T
1
448H856010
Circuit Diagram [ST440 ]
010B
1 1 1
448H125010 Joint 003T
1
449H856010
Circuit Diagram [ST440L]
011 B 8 8 8 448H270020
Button, Memo 1 ~ 10
004T
1
9631000090
WarrantyCard [ST440]
012B
1 1 1
448H270030
Button, Memory 005T
1
448H851210
User Manual [ST440)
0138
1 1 1
448H127510
Control Board, Tuning UP/Down
006T 1
448H851220
User Manual, Spec. [ST440)
021B
1 1 1 51280306BO B.H. Tapped Screw B3 x 6
007T
1
103H854010
Warranty Card [ST440)
OOST
1
2225813010
Envelope [ST440)
001G 1 1 1 448H105010
Chassis, Front
002G 1 1 1 448H118010
Spacer, LED
009T
1
9650000050
S. Station Card [ST440)
010T
1 101
K854210
Warranty [ST440)
003G 1 1 1 448H258010
Hook, Disitron
004G 1 1 1 448H056010 Butter, Disitron
001V
1 1 1
ZA02000070
EXT. Antenna
005G 1 1 1
448H303010
Mask, Disitron
002V 1 1 1
ZD01000170
Connective Cord
006G 2 2 2 51280308BO B.H. Tapped Screw B3 x 8
007G 2 2 2 51280308BO B.H. Tapped Screw B3 x 8
.1> W001 1
ZC01805010
A.C. Power Cord
&W001 1
ZC01604010
A.C. Power Cord [ST440)
18

• [P02-99] Main Chassis and General Parts
0020
~
0010
~>
~<~
~ 006R
L051 0020 008R
WOOI
OOIF
003R 014F ~
OOIF > ~ ~ ~
93
~~ -- ~ ~
- ~ 005R
FOR (U) ONLY
REF.
Q'TY
PART NO. DESCRIPTION
DESIG.
u N A
REF.
Q'TY
PART NO. DESCRIPTION
DESIG.
U N A
0010 1 1 1
417H257110 Lid, Top Cover
001R
1
2112265010
lndicator, Seriai No. [ST440]
0020
4 4 4 51280408UO B.H. Tapped Screw
84 x 8
001R
1 1 2112265110
lndicator , Seriai No .
002R 1
105H861010
Label, 2 Year
001F
1
448H105020
Chassis, Main [ST440]
003R 1 9511101070
Label, UL [ST440]
001F
1 1
448H105030
Chassis, Main [ST440]
005R 1
2457861040
Label, CSA [ST440]
001 F 1 449H105010
Chassis, Main [ST440L]
006R 1 1
2911861020 Label
006F 4 4 4 5128030880
B.H. Tapped Screw 83 x 8
007R
1 1
2911861110 Label
007F 2 2 2
5126030880 B.T. Screw
83 x 8
008R
2
117H861010
Label [ST440]
011 F 3 3 3 5128030880
8.H. Tapped Screw 83 x 8
012F 1 1 1 417H271020
Holder, Loop Antenna ,1, J091 1 1
BY05060060
Voltage Se l ector [ST440]
013F
2 2
5128030880
8.H . Tapped Screw 83 x 8
,1, J092
1 1
YP04000580 Plug, AC lnlet
[ST440]
,1, J093 1 YJ04000910
Jack, AC Outlet [ST440]
014F 1
1455259030
Bushing, AC Gord [ST440]
016F
4 4 4
415H057010 Leg
,1, L001 1
TS14138010
Power Transformer [ST440]
017F 4 4 4
5128040680
B.H. Tapped Screw B4 x 6
,1, L001 1 1 TS14138020
Power Transformer [ST440]
,1, L001 1 TS14138030
Power Transformer [ST440L]
007G 3 3 3 5128030880
B.H. Tapped Screw 83 x 8 L051 1 1 1
LA00035010
Coil, Loop Antenna
,1, W001 1
YC01900070
A.C. Power Gord [ST440]
19

11. ELECTRICAL PARTS LIST
REF.
Q'TY
PART NO.
DESCRIPTION
DESIG.
u N A
REF.
Q'TY
PART NO.
DESCRIPTION
DESIG.
u N A
P100-TUNER CIRCUIT BOARD C212 1 1 1
EA10602530
Elect 10~-tF
25V
P100 1 1 1
YK448H1510
P.W. Board, Tuner
C213 1 1 1
OK18403320
Ceramic 0.04J.LF
1
ZZ448H1510
P.W. Board Assembly [ST440]
C214 1 1 1
OK18403320
Ceramic
0.04J.LF
1 1
ZZ448H8510
P.W. Board Assembly [ST440]
C215 1 1 1
OK18403320
Ceramic 0.04~-tF
1
ZZ449H8510
P.W. Board Assembly [ST440L]
C216 1 1 1
OK18403320
Ceramic
0.04~-tF
C217 1 1 1
OK18403320
Ceramic 0.04~-tF
P100-CAPACITORS
C218 1 1 1
EA10602530
Elect 10~-tF
25V
CA01 1 1 1
CT12000090
Trimming
16pF
[ST440]
C219 1 1 1 EA22505030
Elect
2.2J.LF
50V
CA01 1
CT21400010
Trimming
14pF [ST440L]
C220 1 1 1 EA10505030
Elect 1~-tF
50V
CA02
1
0015180370 Ceramic
18pF ±5%[ST440L]
CA03 1
OF15151550
Film
150pF ±5%[ST440L]
C301 1 1 1
EA10602530 Elect
10J.LF
25V
CA04 1 0015560370
Ceramic
56pF ±5%[ST440L]
C302 1 1 1
OF15473310
Film
0.047~-tF
±5%
CA05 1 1 1
OF15471550
Film
470pF
±5% C303 1 1 1
OF15471550
Film 470pF
±5%
CA06 1 1 1
0015180370
Ceramic 18pF ±5% C304 1 1 1
EA33505030
Elect 3.3~-tF
50V
CA07 1 1 1 OK18103310 Ceramic
0.Q1J.LF
C305 1 1 1
EA10505030
Elect 1J.LF
50 V
CAOB
1 1 1 OK181
03310
Ceramic
0.01J.LF
C306 1 1 1
EA47405030 Elect 0.47J.LF
50 V
CA09
1 1 1
0010030370
Ceramic
3pF ±o.25pF
C307 1 1 1
EA10701630 Elect
100~-tF
16V
C309 1 1 1
EA10602530
Elect 10~-tF
25V
CA10
1 1 1 OK181 03310
Ceramic 0.01J.LF
C310 1 1 1
EA10602530 Elect 10J.LF
25V
CA11 1 1 1
OK18102300 Ceramic
1000pF
C311 1 1 1
0015181370 Ceramic
180pF ±5%
CA12 1 1 1
OK18403320
Ceramic 0.04J.LF
CA13 1 1 1
OK18103310
Ceramic
0.01J.LF
C312 1 1 1
0015181370
Ceramic
180pF
±5%
CA14 1 1 1
OK18103310
Ceramic
0.01J.LF
C313 1 1 1
EA22505030
Elect 2.2J.LF
50V
CA15
1 1 1 OK18403320
Ceramic 0.04J.LF
C314 1 1 1
EA22505030 Elect 2.2J.LF
50 V
CA16 1 1 1
EA10701630
Elect 100J.LF
16V
C315 1
OF15223310
Film 0.022J.LF
±5%[ST440]
CA17
1 1 1 OK18103310
Ceramic 0.01J.LF C315 1 1
OF15153310 Film 0.015J.LF ±5%
CA18 1 1 1
OK18103310
Ceramic
0.01J.LF
C316 1
OF15223310 Film
0.022~-tF ±5%[ST440]
CA19 1 1 1
0015560370 Ceramic 56pF ±5% C316 1 1
OF15153310
Film
0.015J.LF ±5%
C317 1 1
OF15822310
Film
8200pF ±5%[ST440]
CA20 1 1 1
OK18102300
Ceramic 1000pF
C318 1 1
OF15822310
Film
8200pF ±5%[ST440]
CA21 1 1 1
OK18403320
Ceramic 0.04J.LF
C319 1 1 1
EA33601630 Elect 33J.LF
16V
CA22
1 1 1
EA47405030 Elect 0.47J.LF
50V C320 1 1 1
EA22505030 Elect 2.2J.LF
50V
CA23 1 1 1
OK18403320
Ceramic 0.04J.LF
CA24 1 1 1
OK18403320 Ceramic 0.04J.LF
CA25 1 1 1
EA10602530 Elect 10J.LF
25V
C501 1 1 1
0015470300
Ceramic
47pF
±5%
C502 1 1 1
0015470300
Ceramic
47pF
±5%
CA26
1 1 1
EA47405030
Elect
0.47J.LF
50V C503 1 1 1
EA22505030
Elect 2.2~-tF
50V
CA27 1 1 1
OF15103310
Film
0.01J.LF
±5% C504 1 1 1
EA22505030 Elect 2.2~-tF
50V
CA28
1 1 1
OF15223310
Film
0.022J.LF
±5% C505 1 1 1
EA22801630
Elect
2200J.LF
16V
CA29
1 OF15222310
Film
2200pF
±5%[ST440]
C506 1 1 1
OK18103310
Ceramic
0.01~-tF
C507 1 1 1
EA22701030 Elect 220~-tF
10V
CA29 1 1 OF15152310
Film
1500pF ±5% C508 1 1 1
OK18222300
Ceramic 2200pF
CA30 1 1 1
0015221370
Ceramic 220pF ±5% C509 1 1 1
OK18103310
Ceramic
0.01~-tF
CA31 1 1 1 OK18103310
Ceramic 0.01J.LF
C510 1 1 1
OF15683310
Film
0.068J.LF
±5%
CA32 1 1 1
OK18103310 Ceramic 0.01~-tF
CA33 1 1 1 OK18103310
Ceramic 0.01J.LF
C511 1 1 1 EA22505030 Elect 2.2~-tF
50V
CA34
1 EA47405030 Elect 0.47~-tF
50V[ST440L]
C512 1 1 1
OK18103310 Ceramic
0.01~-tF
CA35 1 EA47405030
Elect
0.47J.LF
50V [ST440L]
C513 1 1 1 EA33601630
Elect
33~-tF
16V
CA36 1 1 1
OK18403320 Ceramic
0.04J.LF
C514 1 1 1 OK18103310
Ceramic
0.01~-tF
C515 1 1 1 0015180370
Ceramic 18pF ±5%
C101 1 1 1 OK18403320 Ce ramie 0.04J.LF
C801 1 1 1
EA10803530 Elect 1000~-tF 35V
C201 1 1 1 OK18103310 Ceramic
0.01~-tF
C803 1 1 1
EA10602530 Elect
10~-tF
25V
C202 1 1 1
OK18103310 Ceramic
0.01~-tF
C805 1 1 1
EA22701030 Elect 220J.LF 10V
C203 1 1 1
OK18103310
Ceramic 0.01J.LF
C806 1 1 . 1
EA10705030 Elect
100~-tF
50 V
C205 1 1 1
OK18403320 Ceramic 0.04~-tF
C807 1 1 1 EA10603530
Elect
10~-tF
35V
C206 1 1 1 OK18403320 Ceramic 0.04~-tF
C812 1 1 1
OK18103310
Ceramic
0.01~-tF
C207 1 1 1 EA10505030 Elect
1~-tF
50V
C208 1 1 1 0015221370
Ceramic
220pF ±5% P100-RESISTORS
C209 1 1 1
OK18403320
Ceramic 0.04J.LF
(Ali Resistors are ±5% and %W)
C210 1 1 1
EA10602530
Elect
10~-tF
25V
RA01 1 1 1
G005104140 100K.!1
C211 1 1 1
EA10602530
Elect
10J.LF
25V
RA02 1 1 1 G005104140
100K.!1
RA03
1 1 1
G005105140 1M.!1
RA04 1 1 1 G005102140 1K.!1
RA05 1 1 1
G005221140
220.!1
RA06 1 1 1 G005682140
6.8K.!1
20

REF.
O'TY
PART NO.
DESCRIPTION
DESIG . U N A REF.
O'TY
PART NO.
DESCRIPTION
DESIG.
U N A
RA07 1 1 1
GD05152140 1.5Kn
R301 1 1 1 GD05473140
47Kn
RAOS 1 . 1 1
GD05332140
3.3Kn
R302 1 1 1
GD05473140
47Kn
RA09 1 1 1
GD05101140 lOOn
R303
1 1 1
RA04720600
4.7Kn , Trimm ing
RA 10 1 1 1 GD05471140 470n
R304
1 1 1
GD05153140
15Kn
RA11
1 1 1
GD05101140 lOOn R305
1 1 1
GD05102140
1Kn
RA12 1 1 1
GD05101140 lOOn
R306 1 1 1
GD05181140
180n
RA13
1 1 1 GD05153140 15Kn
R307 1 1 1
GD05223140
22Kn
RA14 1 1 1 RA02230600
22Kn . Trimming
R308 1 1 1
GD05223140
22Kn
RA15 1 1 1
GD05103140 lOKn
R309
1 1 1
GD05153140
15Kn
RA16
1 1 1 GD05103140 lOKn
R310 1 1 1
GD05153140
15Kn
RA17 1 1 1
GD05223140
22Kn
R311 1 1 1
GD05473140
47Kn
RA18 1 1 1
GD05102140
1Kn
R312
1 1 1
GD05473140
47Kn
RA19
1 1 1 GD05333140
33Kn
R313
1 1 1
GD05332140
3. 3Kn
RA20
1 1 1 GD05683140
68Kn
R314 1 1 1
GD05332140
3.3Kn
RA21
1 1 1 GD05103140
lOKn
R315 1 1 1
GD05473140
47Kn
RA22
1 1 1 GD05683140
68Kn
R316 1 1 1
GD05473140
47Kn
RA23
1 1 1
GD05473140
47Kn
R317 1 1 1
RA02240600
220Kn , Trimming
RA24 1 1 1
GD05102140
1Kn
R318 1 1 1
GD05102140
1Kn
RA25 1 1 1
GD05683140
68Kn
R319
1 1 1
GD05473140
47Kn
RA26 1 1 1 GD05103140
lOKn R320 1 1 1
GD05103140
10Kn
RA27 1 1 1
GD05102140
1Kn
R321 1 1 1
GD05154140
150Kn
RA28 1 1 1 GD05272140
2. 7Kn
R322
1 1 1
GD05472140 4. 7Kn
RA30 1 1 1
GD05103140 lOKn
RA31
1 GD05103140
10Kn
[ST440L)
R501 1 1 1
GD05333140
33Kn
RA32 1
GD05103140 lOKU
[ST440L)
R502
1 1 1
GD05333140
33Kn
RA33 1
GD05103140
10Kn
[ST440L]
R503 1 1 1
GD05470140
47n
RA34 1 GD05103140
lOKn
[ST440L]
R504
1 1 1
GD05470140
47n
RA35 1
GD05103140 lOKn
[ST440L)
R505 1 1 1
GD05103140
10Kn
RA36 1
GD05103140 lOKn
[ST440L)
R506 1 1 1
GD05473140
47Kn
RA37 1
GD05104140 100Kn
[ST440L]
R507
1 1 1
GD05103140
10Kn
RA38
1
GD05104140
lOOKn
[ST440L]
R508
1 1 1
GD05102140
1Kn
R509 1 1 1
GD05102140
1Kn
R201 1 1 1
GD05101140 lOOn
R510 1 1 1
GD05102140
1Kn
R202 1 1 1
GD05181140 180n
R203
1 1 1 GD05331140
330n
R511 1 1 1 GD05103140
10K n
R204 1 1 1
GD05272140 2. 7Kn
R512 1 1 1
GD05473140
47Kn
R205 1 1 1
GD05153140
15Kn
R513 1 1 1
GD05103140
10Kn
R206 1 1 1
GD05681140
680n
R514 1 1 1
GD05103140
10Kn
[ST440]
R207
1 1 1 GD05331140
330n
R515
1 1 1
GD05154140
150Kn
R208
1 1 1 GD05331140 330n
R516
1 1 1
GD05103140
10Kn
R209 1 1 1
GD05103140 lOKn
R517 1 1 1
GD05103140
10Kn
R210 1 1 1
GD05104140
lOOKn
R518 1 1 1
GD05103140
10Kn
R519 1 1 1
GD05473140
47Kn
R211 1 1 1
GD05101140 lOOn
R520 1 1 1
GD05473140
47Kn
R212 1 1 1 GD05222140
2. 2Kn
R213 1 1 1 GD05102140
1Kn
i!I R802 1 1 1
GA05681020
680n
2W
R214 1 1 1
GD05183140 18Kn
1!1 R803
1 1 1 NH05220140
22n
R215 1 1 1
GD05223140 22Kn
R804 1 1 1
GD05102140
1Kn
R216
1 1 1 RA04730600
47Kn, Trimming
R805
1 1 1
GA05271020 270n
2W
R217 1 1 1 GD05104140
lOOKn R806 1 1 1
GD05103140
10KQ
R218 1 1 1 GD05104140
lOOKn
i!I R807
1 1 1
GG05391120
390n Y:. W
R219 1 1 1
GD05103140
10Kn R808 1 1 1
GD05681140
680n
R220
1 1 1 GD05222140
2.2 Kn
R809 1 1 1 GD05332140
3.3Kn
R810 1 1
GD05394140 390Kn
R221 1 1 1 GD05683140
68Kn
R811 1 RC10225920
2. 2Mn
±10 %
Y:. W
R222
1 1 1 GD05473140
47Kn
R223 1 1 1 GD05472140
4. 7Kn
R224 1 1 1
GD05473140 47Kn
R225 1 1 1 GD05102140 1Kn
R226 1 1 1
GD05103140 lOKn
21