Technics SH-4020 User manual

ORDER NO. SD82032153C2
ervice
Manual
Audio Timer
SH-4020
[EG ],(EF],(EK],[EH],
(EB],(DX],{
EW],[DM],
[Ei]
Areas { * [EG] is availablein F.R. Germany. * [DX] is available in Scandinavia.
* [EF] is available in France. * [EW] is available in Switzerland
* [EK] is available in United Kingdom. * [DM] is available in Denmark.
* [EH] is available in Holland. * [Ei] is available in Italy.
* [EB] is available in Belgium.
English
Specifications
(Specifications are subject to change without notice for
further improvement.)
Power capacity
for Denmark and Switzerland
Total 6OOW Max or each 275W Max (110V, 120V)
Total 1200W Max or each 550W Max (220V, 240V)
for other areas
6OOW Max (110V, 120V), 1200W Max (220V, 240V)
Dimensions (W<H*<D)
for Denmark and Switzerland 430 « 53 & 167 mm
(16-15/16" * 2-3/32" * 6-9/16")
430 « 53 * 156 mm
(16-15/16" & 2-3/32” * 6-5/32")
Single pole-single throw
Synchronizes with frequency
of power source
Timer accuracy O ~ +0.02 second against preset time
Clock 24-hour indication
Sleep timer 1 min. ~ 1 hour, 59 min.
Setting intervals 1 min. ~ 23 hours, 59 min.
Power supply AC 50 Hz/60 Hz, Weight
110V/120V/220V/240V for Denmark and Switzerland
7W for operation of timer for other areas
Switch construction
Clock accuracy
for other areas
1.8 kg (4.0 lb.)
Power consumption 1.9 kg (4.2 Ib.)
Deutsch
TECHNISCHE DATEN
(Spezifikationen KOnnen infolge von Verbesserungen ohne
Ankiindigung geandert werden.)
Stromstarke
Danemark und Schweiz
Total 6OOW max. oder je 275W max. (110V, 120V)
Total 1200W max. oder je 550W max. (220V, 240V)
andere Lander 600W max. (110V, 120V)
1200W max. (220V, 240V)
Doppelpol-Einrichtschaltung
Uhrenprazision
Mit
der
Stromfrequenz
synchronisiert
Timerprazision
0
~
+0,02
Sekunden
zur
eingestellten
Zeit
Uhr
24-Stunden-Anzeige
Sleep
timer
1
Min.
bis
1
Std.
59
Min.
Einschaltdaurer
1
Min.
bis
23
Stdn.
59
Min.
Netzspannung
Wechselstrom
50
Hz/60
Hz,
110V/120V/220V/240V
7W fur den Gebrauch des Timers
Schaltung
Abmessungen (BXHXT)
Danemark und Schweiz
andere Lander
Gewicht
Danemark und Schweiz 1,8 kg
andere Lander 1,9 kg
430 « 53 X 167 mm
430 « 53 X 156 mm
Stromverbrauch
Fran¢ais
CARACTERISTIQUES
Agencement des commutateurs type bipolaire a une direction
Précision de l’horloge Synchronisee avec la frequence
de la source de courant
Précision de du chronorupteur 0 ~ +0,02 seconde pour le Danemark et la Suisse
Horloge Affichage base sur le systeme des 24 heures pour d’autres régions
Sleep timer 1 min. ~ 1 hour, 59 min. Poids
De 1 minute a 23 heures, 59 minutes pour le Danemark et la Suisse 1,8 kg
CA 50 Hz/60 Hz, 110V/120V/220V/240V pour d’autres régions 1,9kg
7W pour le fonctionnement
(Sujet 4 changement sans préaris.)
pour d’autres régions
6OOW Max (110V, 120V), 1200W Max (220V, 240V)
Dimensions (LXH*<Pr)
430 « 53 K 167 mm
430 < 53 & 156 mm
Intervalles de reglage
Alimentation
Consommation
du chronorupteur
Pouvoir de consommation
pour le Danemark et la Suisse
Total 6BOOW Max or each 275W Max (110V, 120V)
Total 1200W Max or each 550W Max (220V, 240V)
"Technics
Nota:
La Societe NATIONAL-PANASONIC-FRANCE, importateur du
matériel MATSUSHITA-ELECTRIC déclare que cet appareil est
conforme aux prescriptions de la directive 76/889/C.E.E.
(arrete 14 Janvier 1980).
Matsushita Electric Trading Co., Ltd.
P.O. Box 288, Central Osaka Japan

Mi CONTENTS
Page
LOCATION
OF
CONTROLS
...........
UF
sil
Ah
Gite
dante
2
CIRCUIT
BOARDS
AND
WIRING
CONNECTION
PEATORES:
Ack
ims
6G
Be
beck
owe:
BR
OG
teak
Bea
ecole
2
DIAGRAM
.....
ee
ee
ee
ee
a
ee
a
HOW
TO
OPERATE
.................
gig
it
Wah
HG
3
BLOCK
DIAGRAM
.....................
DISASSEMBLY
INSTRUCTIONS
................
4
SCHEMATIC
DIAGRAM..................
REPLACEMENT
PARTS
LIST
EXPLODED
VIEWS
.................00.
Electrical Parts .........0...... 008 eee eeeae 4
Resistor & Capacitor
Cabinet & Chassis Parts .................. 9~ 10
Mi LOCATION OF CONTROLS
fast
slow Timer/Timer set
Digital display
reverse
Power indication lamp Mode selector
(outlet on)
clock
second set timer on set
(@ auto, . manual)
AC outlet selector time set timer off set
sleep
hold
|_-second set
reset
manual ( M@ off, = on)
Power frequency selector
6OHz + 50Hz
Voltage selector
AC outlet
Voltage selector Fuse
AC
outlet
Power
frequency
selector
(S7)
(S6)
(S1)
Mode
selector
fc
outlet
selector
i
| és
|
Power
transformer
|
'
Clock timer IC—-4
* This photo shows the [EG] area.
The
shape
of
AC
outlet
of
this
unit
differs
with
area.
Mi FEATURES
@ Once-a-day on-off function.
@ Sleep timer can be steplessly set in a range from 1 minute to 1 hour 59 minutes (display in minute only).
@ AC power socket (interlocked with switch) of B8OW max.
@ 24-hour indication (easy-to-read FL display).
® Commerical power supply frequency synchronizing system.

Mi HOW TO OPERATE
e Setting the timer (on/off time)
About the timer
The timer is used to turn the power on or off at preset times. If the AC outlet control is set to the ‘‘auto’’ (=~ HL) position,
the power will be turned on at the preset ‘‘on’’ time, and off at the preset ‘‘off’’ time.
3 “auto”:
(Note: In order to turn the AC 1
outlet on or off regardless of the
timer operation, set the AC outlet
control to ‘‘manual’’ and then
switch the power on or off by
using the button at right.)
e Setting the timer “on” time:
Set the mode selector to the
‘timer on set’ position.
e Setting the timer “off’’ time:
Set the mode selector to
‘timer off set’’ position.
4 “clock’’
2-1 Set the time.
e Set the hour and minutes. 2-2 @ Set the minutes precisely.
Note: If the ‘’fast’’ and ‘‘slow”’
buttons are pressed
simultaneously, the time
will be set to ‘‘0:00’’.
Notes:
1. If an amplifier, etc., is turned ‘‘on"’ by the timer and after one minute, the mode selector is set to the ‘‘timer on set’’ posi-
tion, the power and the timer-controlled operation will be turned off.
2. The timer will not operate if the mode selector is set to the ‘‘timer on set’’ position.
3. The timer will not operate if the ‘‘on’’ and “off’’ times are set to the same time.
@ Setting the sleep timer
About the sleep timer
The sleep timer is used to turn the power off automatically at a preset time. The sleep timer makes it possible to go to sleep
while listening to music. The timer will then turn the power of the audio unit off at the preset time.
2-1 Set the time.
When the button ts pressed, the
time display starts counting down
from 1:59 to 0:00. 2-2
@ Set the hour and minutes. @ Set the minutes precisely.
Release the button just before Note: If the ‘’fast’’ and ‘’slow”
buttons are pressed
simultaneously, the time
will be set to “0:00”. 1 “sleep’’
the desired tine.
3 “auto” 4 “clock”
(Note: In order to turn the AC
outlet on or off regardless of the
timer operation, set the AC outlet
control to ‘‘manual’’ and then
switch the power on or off by
using the button at right.)
Notes:
1. The sleep timer operates only once. It must be reset each time it is to be used.
2. |f the timer operation (on/off) and the sleep timer operation overlap, the sleep timer operation will take priority.
20:00 21:00 22:00 23:00 0:00 1:00
Timer operation : Timer “otk
Timer
“On”
—PLLO02L2
; :
1 When the sleep timer is set to operate for
90 minutes, starting at 21:00
Sleep timer operation
Turns off at 22:30

Mi DISASSEMBLY INSTRUCTIONS
How to remove the printed circuit board.
Remove the 2 setscrews (Fig. 1: @, @) of the cabinet.
Remove
the
1
setscrew
(Fig.
1:
@)
of
the
FL
bracket
and
move
the
FL
bracket
in
the
direction
of
the
arrow
®
in
Fig.
1.
Remove
the 3
setscrews
(Fig.
1:
@
~
@)
of
the
front
panel, and
move the
front
panel in
the
direction of
the
arrow
©
in
Fig. 1.
4. Remove the 3 setscrews (Fig. 2: @ ~ ©) of the printed circuit board.
(Raise the printed circuit board when repairing.)
Cy Rear panel
1) Be
SS Lift it up
S straight
NN
ei
Cabinet
Printed circuit board
os.
\\
Printed circuit
board
FL bracket
Fig. 1 Fig. 2
M@ REPLACEMENT PARTS LIST .... . Electrical Parts
Notes: 1. Parts numbers are indicated on most mechanical parts. Please this part number for parts orders.
2. Important safety notice:
Components identified by AA mark have special characteristics important for safety.
When replacing any of these components use only manufacturer's specified parts.
3. The ’’S”’ mark is service standerd parts and may differ from production parts.
4, Unless other wise specified.
All resistors are in OHMS(Q2 ), K=100082, M=1000k{2.
All capacitors are in MICROFARADS(u F), P=MHF.
INTEGRATED CIRCUIT TRANSFORMER
TRANSISTORS FLUORESCENT DISPLAY TUBE
2SA733—P1 Swiching es ee
FUSE
Fy
A|
XBAS2C025T1A|
250V,
T250mA
Fl1~14
A]
XBA2C63TRO
|
250V,
T630MA
[EG]
only
SWITCHES
S1
SSR175 Mode
RELAY
S234
SSGQ
Timer
Set
SVDSR1K2
Rectifier
RLY]
Al
ssysi
AC
Onin
S5,
6
SSH2007
AC
Outlet
SVDMZ406B
6V,
Zener
S7
ESD14116
Allocation
MA162A
Switching
(50/60Hz)
SVDMZ409B
QV, Zener
A|
ESE3787
Voltage Adjust
Numbering
System
of
Resistor
Numbering
System
of
Capacitor
Example Example
ERD
25
T
J
104
ECKD
1H
103
Z
F
Type
Wattage
Shape
Tolerance
Value
Type
Voltage
Value
Tolerance
Peculiarity
ECEA ie 5 101
Type Voltage Peculiarity use Value
eo ae en
RESISTORS
R1
ECEA : Electrolytic P : +100%, —O%
ECKD : Ceramic ; Z : +80%, —20%
CAPACITORS
ECKD1H1032F
ECEA1VS471
ECEA1ES101
ECKD1H1032ZF
A\| ECKDKC103PF
ERD25TJ104
ERD251.3333
ERD25FJ103
ERD25TJ563
R5

Mi CIRCUIT BOARDS AND WIRING CONNECTION DIAGRAM
Ground (Earth) lines
GROUND
POINT
AC OUTLET AC OUTLET AC OUTLET
S38
VOLTAGE SELECTOR
T1
Power
= f
(fee S| Transformer eCuIE
110/120/220/240V
(50/60Hz)
White
Brown
Orange
Segment 4 Segment 3 Segment 2 Segment {
$7
—
8
—
$5
Freguency
ae
REVERSE
FAST/
|
OUTLET
CONTROL
|
Fluorescent
selector
Sit
63
HOLO | |PRESET Bubley Tube 50HR =~ LOH
(F.L)
(On .
Pin No. 303 32 33 34

[>] Hi BLOCK DIAGRAM
Power frequency selector
S7
j Ov IC 1 50Hz 60H2
MN6076
Clock timer
5V/D!IV 5msec/cm (60Hz)
AC LINE
y
transformer
OFF-time adi. ]
;
j.
‘i Twin [a |
23
Timer ON ES Timing
output OFF EReset comparator
outlét
AC outlet selector
manual!
AC outlet ~_
selector | op
Ss6 ©
S4
nee
O
4 3
6500 |;
©) {>
S1 Mode selector
| : cH S1-1 cf
time set /
second set /
clock Go gig th AB ee fe rt at a ED BP OAS nae aa, ans Ea af
timer on. set
timer off set
sleep
OaBWND —

Wi
SCHEMATIC
DIAGRAM
z
:
g
5
4
3
2
(This
schematic
diagram
may
be
modified
at any time
with the
development
of
new
technology.)
(Fluorescent
Display
Tube)
FL
aos
sah
F
-
Filament
Op
—
Dot
G
—
Glid
a~g
—
Segment
A-—-
on
*
The
part
No.
of
transistors,
|1C
and
diodes
mentioned
in
the
schematic
diagram
stand
When
segment
2
indicated
OV
a4
for
production
part
No.
Regarding
the
part
No.
without
©
mark,
the
production
When
segment
is
not
indicated
—20V
F
Dp
Q@
Col
G
94
e4
b4 c4
#3
g3
a3
b3
d3
c3
e3
G
f2
g2
d2
a2 b2 e2
c2
fl
gi
al
bi el
cl
dl
F
A
part No. are different from the replacement part No. Therefore, when placing an
order for replacement parts, please use the part No. in the replacement parts list.
SSTUPTTTile Lee lL LL
ae
AC 50/60Hz
110/120/220/240V
SVDMZ409B
9V ZENER
* This is the basic circuit diagram
(for DX, EK, EF, EB, EH, Ei) of
this unit.
Note that part of the circuit Is
subject to change depending on
the areas.
@ Power source circuit
[EW] and [DM] areas.
Notes:
1.81 : Mode selector switch in ‘’time set’’ position ( 4) time set,
second set, (3) clock, @ timer on set, (5) timer off set, oy
) sleep). | SVDSRIK2
2.S2~S4_ : Timer/time set switch
piper tine set (S2 : fast, S3.: slow, S4: peverseld
second set (S2 : reset, S3 : hold) bide te
3. $5 : AC outlet selector switch in ‘‘auto’’ position. (auto <> manual) SVDMZ406B
4. $6 : AC outlet selector switch in ‘off’ position. (on <> off) 6V ZENER
5. $7 : Power frequency selector switch in ‘’50H2z"’ position. (50Hz <-> 60Hz) Cl 0.0l B
6. $8 : Voltage selector switch in ‘'220V” position.
(110V <> 120V «> 220V<—> 240V) 5
7.RLY 1 : Relay in ‘‘off (normal open)” position. 2
rr
VOLTAGE ete tee
SELECTOR 4! 240ov_ BLK J 1_BRN @
ca Aw le -
P AC 21 otis 9
| | | }
Qa
Cc
er ee a ee
a2
b2 62 c2 f | gi al bl
e3 f2 g2
MN6O76
d2
Ic | CLOCK TIMER
SLEEP
OUT
12/24Hr 50/60
IHz SELECT BLANK SELECT
-— TIMER—
Hz—-4
IN FF/REV SLOW FAST MS! MS2 MS3 Vss Voo OFF IN ON IN OUT
© Power source circuit [EG]
wo
SENEC ORG: SELECTOR ; 240V BLK AT. =0.8, eS 0,
Oo
D
A cor D3,07 ~p9 When mode switch is in ‘‘sleep’” position,
110/120) 110/120/ © MAI50 * Relay(RLY 1) — ON: OV
220/240V
220/240V
:
5 on Relay(RLY 1) — OFF: —0.7V
06 Bee OD off $2. FAST/RESET
: $3 : SLOW/ HOLD
© MAI50 2SAl 33 ae ‘Cee $4 REVERSE
RELAY DRIVE
Product for Scandinavia and Denmark. Product for F.R. Germany.
@ Terminal voltage of IC1 (MN6076) when the © Terminal voltage of 1C1 (MN6076) when the e Terminal guide of transistors,
- é ape oe an ar ae . Tap = . . Ps
fluorescent display is (=: i; (_; (Unit: V) fluorescent display ; ; | | : | | repeats blinking. (Unit: v) IC’s and diodes
Pin, MODE:time set__| MODE :time set__ || MODE :time set | MODE time set pin| MODE time set_ Sines MN6078 :
No| outlet outlet No| outlet = hep ont POMEL gc cen hp. q . outlet.
Reach :manual/off Ras ar :manual/on ‘ anol :manual/on :manual/off pa :manual/on ae
Same as wave form | Same as wave form 50/60Hz SELECT
@ of terminal @. of terminal @9. 1:
Same as wave form j| Same as wave form oe . :
@ of terminal @9. of terminal @9. a ae vee ne im
a ea S| (MODE) 2SA733
Same as wave form | Same as wave form @® time set as
of terminal @9. of terminal 69. second set oy
29) . timer on. set 04.05
-
timer
off
set
:
(
20
a
©
sleep
he)
MA
|50
:
F
Same as wave form
of terminal 69.
Same as wave form
of terminal @9.
B
8. [____Jindicated voltage values are the standard values for the DC electronic SVDMZ312B, SVDMZ309A
circuit tester (high impedance) with the chassis taken as standard. Therefore,
there may exist some errors in the voltage values, depending on the internal bof
impedance of the DC circuit tester.
4 1 Indicated voltage values are relay on. =D
Q, mums Negative (—B) lines
10. Important safety notice:
Componetns identified by AV mark have special characteristics important
for safety. When replacing any of these components, use only manufacturer’s
—10
[nee ee
iE:
(1Hz)
Same as wave form -
of terminal @9.
Terminal 62 with S2 depressed is OV.
Same as wave form
of terminal @9.
|
to
oh
S| © esis)
|
;
—
Terminal @2 with S2 depressed is OV.
Terminal 63 with S3 depressed is OV.
Terminal @) with S4 depressed is OV.
Terminal @3) with S3 depressed is OV.
Terminal @) with S4 depressed is OV.
specified parts.

SH-4020 SH-4020
Mi EXPLODED VIEWS
Voltage Adjuster
Power Transformer
(T1)
e AC Outlet and Rear Panel
[EK] can For United Kingdom.
N14 Except for [DM, EW]
43)
Except for
[DM, EW] |
A2) ep) (N6)
“fj —
pos
:f
pat
<
(N14)x2
\except
for
3
>
SID
Gz
[DM,
EW]
~
~~
—
46) Except for
[DM, EK, EW]
Sy EW] only
one ail [DX, EB, EF, EH, Ei, EG].... Except for
United Kingdom, Denmark and Switzerland.
Rear Panel
* N8
ete
lees
AC Outlet
ae
a)
is\) prope?)
: 3)
|
Si
=
'
Allocation
Switch
Leen.
SS
p)
aw (S7) ~ “TH Loe \/
bh (2 SN Loa
>
E>]
*
Mode Switch
(S1)
N1
Mi REPLACEMENT PARTS LIST
...... Cabinet and chassis Parts
Notes: 1. Part numbers are indicated on most mechanical parts.
Please use this part number for parts orders.
2. Important safety notice:
Components identified by A mark have special
characteristics important for safety.
When replacing any of these components, use only
manufacturer's specified parts.
3. Bracketed indications in Ref. No. columns specify the area.
Parts without these indications can be used for all areas.
4. The ’’S,, mark is service standard parts and may differ from
production parts.
9.
The
parenthesized
number
in
the
column
of
discription
stand
for
the
quantity
par
set.
SJA103—1 AC Cord
(4)
XTBS3+8BFZ1
XTB3+8BFN
XSN3+6S
XTN3+8BFZ
XTB3+10BFN
XTB3+14BFZ
SNE2095
XSN3+6S
XTS3+8B
XTB3+10BFZ
XTB3+8BFN
Tapping, with Detent Plug Adapter, AC
Tapping, B 3x8 (1)
@ 3x6 (2)
Tapping, @ 3x8 (4)
Tapping, @ 3x10 (2).
Tapping, ® 3x14 (2)
Tapping (2)
@ 3x6 (2)
Tapping, B 3x8 (1)
Tapping, B 3x10 (4)
Tapping, @ 3x8 (1)
SYW541 Front Panel Ass’y
[SHS3259 Spacer
SBN993 Knob, Mode Switch
SBC409 Button, AC Outlet
SDU 101 Filter, FL
SHG1479 Rubber, FL
SUW 1887 Bracket
SJT 347 Holder, Fuse
SHE73 Spacer, P.C.B.
SHR5173 Spacer
SJAQ7 AC Cord
QFC1206M AC Cord
SJA111 AC Cord
Instructions Book (1)
Instructions Book (1)
16
(Except
|
SMxX619
Shield
Cover
for[DM,
EK,
EW))
17
SHR5073—1
Stopper,
Allocation
* [EG] is available in F. R. Germany.
* [EF] is available in France.
* [EK] is available in United Kingdom.
* [EH] is available in Holland.
* [EB] is available in Belgium.
* [DX] is available in Scandinavia.
* [EW] is available in Switzerland.
* [DM] is available in Denmark.
* [Ei] is available in Italy.
18 other SGPH4020D X Rear Panel
areas
Polyethylene Bag (1)
Pad, Left Side (1)
Pad, Right Side (1)
Pad, Upper (1)
Pad, Bottom
SMN 1635 Bracket, Switch
SHG64/ Rubber, Power
Transformer
12 (Except | SJT79I1 Terminal
for [DM,
EW]))
13 SKC910S Cabinet
SGPH4020DM Rear Panel
SGPH4020E Rear Panel
SGPH4020W Rear Panel
SGPH4020G Rear Panel
Carton Box
Spring, 3
Plain, 63 (4)
External Tooted (4)
Lock, $3
SKL227—4 Foot
SJS9225 Socket, AC Outlet
Carton Box
14 other SHR 131 Bushing, AC Cord
areas
14[DM,EW] |SHR127 Bushing, AC Cord
(Except for
[DM,EW])
SJS9321 Socket, AC Outlet
SJS9309 Socket, AC Outlet
Printed in Japan
[9]
82037800
®©
SH/TN