Sony ICF-SW22 User manual

~ SERVICE MANUAL
ICF-SW22
AEP Model
UK Model
E Model
Tourist Model
TUNE »
Frequency range
Speaker
Power output
Output
Power requirements
Battery life
Dimensions
Mass
Accessories supplied
SPECIFICATIONS
FM : 87.6-107.5 MHz (AEP, UK, Italian, Saudi Arabia Model}
76-108 MHz (E, Tourist Model)
IF: 10.7 MHz
SW1: 5.775-6.425 MHz
SW2: 6.875-7.525 MHz
SWS: 9.375-10.025 MHz
SW4: 11.615-12.265 MHz
SWS: 15.00-15.65 MHz
SW6: 17.50-18.15 MHz
SW7: 21.325-21.975 MHz
1st IF: 10.7 MHz
2nd IF: 455 kHz
MW : 531-1602 kHz (AEP, UK, Italian, Saudi Arabia Model)
§30-1710 kHz (E, Tourist Model)
IF: 455 kHz
Approx. @ 40 mm (1 5/8 inches) 7.2 Q
100 mW (at 10% harmonic distortion)
Earphone jack (minijack)
3 V DC, two R6 (size AA) batteries.
Approx. 22 hours with Sony SUM-3 (NS)
Approx. 116.5 x 72.5 x 28 mm (w/h/d)
(4 1/2x2 7/8 x 11/8 inches)
Approx. 200 g (7.1 02) incl. batteries
Short wave guide (1) bet
UK, E, Tourist, Italian, Saudi Arabia Model : Earphone, carrying case
Design and specifications are subject to change without notice.
Features —
* Handy FM/SW1-7/MW 9 band receiver with high sensitivity and selectivity.
* Band spread system enables you to easily tune in SW stations.
* Dual conversion circuit effectively reduces SW bands interference from
other SW stations.
FM/MW/SW1-7
9 BAND RECEIVER
SONY.

TABLE OF CONTENTS
Section Title Page
Specifications eet ee eee eee eee er ee eee eee eee Cer eee eee rere cee rere reer ee rer, l
1. GENERAL
Location of Controls eee errr reer ree ree eee err rrr rr eee eee eee ee eee ey ?
Installing the Batteries eee errr ee eee rere cece eee ee eee ee ee ee ee 3
Operating the Radio eee eee eee err ee ee eee ee eee eee eee ey 3
5 DISASSEMBLY seriiaacsierieeesis eee dees at 4
3. ELECTRICAL ADJUSTMENTS + sccseececceeeeceeerereerenees 5
4. DIAGRAMS
4-] : Printed Wiring Boards PETERS REREER TEER ETRE eRe CN 7
4-2. Schematic Diagram cede Ra VE SEe a CENA R OES ARR RR RR TER Cad Ee ces 9
5B. EXPLODED VIEW sos:ccscccsctscasecdsccccacscsscesecsoavenevece’s 11
6G. ELECTRICAL PARTS LIST <-::ccescccesceeesseeeveeeeseeenees 12
SECTION 1
GENERAL This section is extracted from
instruction manual.
| Molter: 1i(e)a me) mere) al ine) ty See A.
SW BAND selector Set it to the direction of the arrow:
TUNE (tuning indicator) When listening, to avoid accidental
The indicator lights up when signal is change of the functions.
received. When not using, to prevent accidental
3 ; pressing to turn the power on.
Fa 3) Boece
@) (earphone) jack
Hand strap _ TONE (MUSIC/NEWS) selector
|6] Band selectors and indicators (FM/SW/ MUSIC: for listening to the music
MW) NEWS: for listening to news, etc.
The unit turned on with the band selectors. VOLUME dial
alis)
OFF (power off) button Telescopic antenna
18} HOLD switch

Battery compartment
R6 (Size AA) battery x 2
Installing
the
Batteries
See
B.
Insert two R6 (size AA) batteries with correct polarity.
When to replace the batteries — Note
When the batteries are weak, the band When the unit is not to be used for a long period of
indicators will glow faintly and the sound will time, remove the batteries to avoid damage caused
be
become
distorted
or
unstable.
In
this
case,
_‘
by
battery
leakage
and
corrosion.
replace both batteries with new ones.
Concerning the battery life, see
“Specifications”.
f
( For SW reception
@ TUNING
ee
1234567 OW BAND
Operating the Radio See C .
1 <D If the HOLD switch is set to arrow ; foe
direction, release it. To improve receiving
2) Select a desired band FM, SW or MW. iti
The radio is turned on and the condition
corresponding indicator lights up.
(3) For SW reception, select a desired See 9.
band with the SW BAND selector. FM: Extend the antenna for better reception.
2 J) Turn the TUNING dial to tune a SW: Stand the antenna vertically. :
desired station. MW: Rotate the unit horizontally for optimum
2
Adjust
the
volume
with
the
VOLUME
reception
eae
dial.
A
ferrite
bar
antenna
is
built
into
the
unit.
To turn off the radio, press the OFF button.
To listen with the supplied
earpnone
See [i].

SECTION 2
DISASSEMBLY
FRONT
AND
REAR
CABINET
Note:
Follow
the
disassembly
procedure
in
the
nemerical
order
given.
@
+BTP2
x
8
(2
pcs.)
front
cabinet
e
eatnaetob
rear
cabinet
tuning shaft
@ tuning knob
@+BTP2 x8
claw
Be careful
not to break off
claws at 7 portions.
DIAL POINTER SETTING
@17x5
@
dial
scale
plate
Om1.4x3
@ Match the hole with
setting the variable
Ay capacitor gear gap in
the
arrow
@
direction.
©
switch
board
@ tuning belt
1) Turn the
variable capacitor
fully counterclockwise.
center of
scratched lines i
@
First,
turn
the
tuning
shaft
fully
in
the
arrow
®
direction.
Move
only
the
dial
pointer
in
the
arrow
@)
direction
and
set
it
on
the
center
of
the
scratched
lines
on
the
dial
scale plate.
Apply
suitable
locking
compound
to
@
portion.

SECTION 3
ELECTRICAL ADJUSTMENTS
procedure :
no mark : AEP, UK, Italian, Saudi Arabia model
( ) :E, Tourist model
BAND switch :MW
AM FF signal
geveraiol, Put the lead-wire
Td antenna close to
the set.
(Cy
30% amplitude modulation by 400Hz
signal.
Output level: as low as possible
procedure :
BAND switch :SW
AM PF signal
generator
0.01 uF
(= }_ telescopic
antenna
; : terminal
30% amplitude modulation by
400Hz signal.
Output level : as low as possible
procedure :
BAND Switch :FM
FM PF signal
generator
0.01 uF
(C7 ——F [- telescopic
2 a terminal
22.5kHz frequency deviation by
400Hz signal.
Output level : as low as possible
set
1
er
phones jack
@ Repeat the procedures in each adjustment several times,
and the frequency coverage and tracking adjustments
should be finally done by the trimmer capacitors.
@ SW1 to 7 Tracking Adjustment frequencies are in a line
on the scale.
Therefore, on adjusting, first SW 6.1MHz and after adjust
SW2 to 7 Tracking without moving the dial pointer.
MW IF ADJUSTMENT
Adjust for a maximum reading on VTVM.
455kKHz
SW IF (1) ADJUSTMENT
Adjust for a maximum reading on VT VM.
10.6MHz
SW IF (2) ADJUSTMENT
Adjust for a maximum reading on VTVM.
45SKHz
SW1 FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on VT VM.
5.75MHz
6.45MHz
SW1 TRACKING ADJUSTMENT
Adjust for a maximum reading on VT VM.
SW2 TRACKING ADJUSTMENT
Adjust for a maximum reading on VTVM.
SW3 TRACKING ADJUSTMENT
Adjust for a maximum reading on VTVM.
9.7MHz.
SW4 TRACKING ADJUSTMENT
Adjust for a maximum reading on VTVM.
11.94MHz
SW5 TRACKING ADJUSTMENT
Adjust for a maximum reading on VT VM.
15.325MHz
SW6 TRACKING ADJUSTMENT
Adjust for a maximum reading on VTVM.
17.825MHz
SW7 TRACKING ADJUSTMENT
Adjust for a maximum reading on VITVM.
21.65MHz

FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on VTVM.
87.35MHz (_75.0MHz)
CT11-2 108.05MHz (109.5MHz)
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on VTVM.
87.35MHz_(_80MHz)
CT11-1 108.05MHz_ (104MHz)
{PARTS ARRANGEMENT DIAGRAM FOR ADJUSTMENT)
— Conductor Side —
ANTI
FM
TELESCOPIC
ANTENNA
ANT IN
| RVI
|
L3 L4 Ls L6é L7 72
Sw3 SW4 SW5 SW6 SW7 MW L14 } MW Tracking
Tracking Tracking Tracking Tracking Tracking IF Adjustment c711-4{ Adjustment
Adjustment Adjustment Adjustment Adjustment Adjustment
T3
PN TT
Main board
= i = SW
aw
vounenenn
ee
T4
Frequency
Tracking
Z
CT1
|
Coverage
Adjustment
a
Z
Adjustment
MW
CT11-3 | Frequency
L17 Coverage
Adjustment
L15 -CT11-1
L2 TI ES FTES
swe SWIF (1) FM Tracking cT11-2) FM
Tracking Adjustment Adjustment Adjustment LI6 piped are x

ICF-SW22
SECTION 4 4-1. PRINTED WIRING BOARDS
DIAGRAMS
L14 MW FERRITE-ROO ANT
@ SEMICONDUCTOR
LOCATION
;
CFi-#,2
Noe:
ey
CTE)
* O— : parts extracted from the component side.
a ee
B-9
* @—-: parts extracted from the conductor side. A-8 T
‘ — ‘es o-— 4
* Hs: parts mounted on the conductor side. C-7 1 ‘ a
|
* @ _ : Through hole. C-8 a
o: : : Pattern on the side which is seen. B-3 epee eres
ae : | Pattern of the rear side. r --o12
. : D-8 1 are}
. CL] : Chip components extracted from the rear side. A-2 { } |
- | 1 |
D-9 (eee!
D aa 7 ( acne ='3
- 1 |
F-8 s Cates} |
| f ) |
te
F-
F t
aon
e IC BLOCK DIAGRAMS
t
ou
IC 101 CF77392NC
OATA
SELECTR OUTPUT
BUFFER
PULSE
GEN
CONTROL
1
Dowrp <r=O
\ 14
yoaaoan
| |
“NOM © ©
piles BOARD ]
'o4
oon 000 98000
i
IC 1 CX20091
——t END
FRONT END
@ SEMICONDUCTOR LEAD LAYOUTS
CF77392NS CX20091 2SA1162-G
pe DESCR en : i i SscaazaFi3"
2SD596DV345
DTC144EK
TUNING ee
(TOP VIEW) (Tor view)
6
[MAIN BOARD] ANTI
FM
TELESCOPIC
ANTENNA
RVI
i
DRY BATTERY
S EAA"
(IEC DESIGNATION R61
2PCS, 3V
SPI
SPEAKER
2SK209-G 2SK238-K16 XN4601 MA152WK 188119 1$$226 188279 GL-1PR102
2SK508-K51
2
cathode
cathode
3
cathode
:
<é
4
:
a
¢
.
&
anode
store
a
anode
231
anode

4-2. SCHEMATIC DIAGRAM ICF-SW22
1 2 3 4 5 6 7 8 9 10 11 12 13 14
[MAIN
BOARD]
27P
(E,
Tourist
Model)
15P
(E,
Tourist
Model)
7P
(E,
Tourist
Model)
20P
(AEP,
UK,
Italian,
Saudi
Arabia
Model) 30P
(AEP.
UK,
Italian,
Saudi
Arabia
Model)
-—«12P
(AEP,
UK,
Italian,
Saudi
Arabia
Model)
=
(a
114
-ROD
6
A
ANTI
MW
HERMITE
AO!
ae
FM
<
TANTENWAS
°
R12
%
r
1
c20
c21
b
(0)
B
%
if
R93
0.7
|
3.9%
t
ws
7“
¥
oe
Toy
33k
")
HSE
=
SIE
a8
5
2802223
D3
oe
nn
OL
te
SS
aE
nso
ee
De
MW
SHUNT
188279
St ai
Tap 2a 3 mp 4up5 wd Gap 7
3 WHEN OFF BUTTON
st-1 IS PRESSED : 0.5
5
=
uu L2 L3 Lé LS L6 L7
Swi sw2 SwW3 SW4 SW5 SW6 SW7
ANT ANT ANT ANT ANT ANT ANT
AMRF FM
1 RF
(1.3)
cx20091 13)
FM/AM FRONT-END/ AMP/DET
AM AMP
"hac Foc Out
fo ps | 05 + tk
0. "eT ss279 “ey o1
Q6,7
SW AGC
AMP
AMIF FMIF
IN i]
NC OMETER
E, Tourist
o
+
\o]
te
x8 Seo
¢—11
/k#-—->
>
> [-—>
R26
He 19
Q7 +
23, 28C 1623, R29
) CD as
0.
Ro
N a
iO PD S
Baio S,
o
(0) |
((0.4)) D8
Nssia
34H R22
7 oN 220k:
ie 270 16.8 5 2S, 2d 26%80526 S05
. Wie in Win “ine We Ma
R2t
PNe)
a
aio
258815
SWITCHING
(2:3)
a +
val
Ss s
te)
wo
+
LED ON: 0.1
(EARPHONE)
R60
(3)
ae
ai
* C)
PRE
w3y
s2
TS
|
sreaxer
R39 NEWS @ MUSIC
&. Bk (?
tak
DRY BATTERY
SIZE “AA”
(IEC DESIGNATION R8)
G
¢
;
‘2PCS,
3V
SWO BAND ALL _HCM
29
6
H
2:9)
€F7739 (2.9)
> <0 CONTROLLER ED ONL ON
FM MW SWI NC OFF «=RES)s-RXOOCRO)OTP USS
a ()
D103 (0) 3 <=
GLIPRI
1!
oe
(2.9)
4
104 1.4 MAW
BLIPRITI(Y) y (¥) 6 ye
[sw]) aw) % abby
TOTAL CURRENT
pai
[ FM | | 11mA__ |
[Mw | mA |
[SWITCH BOARD]
WR
My
i a
C108
0.010
——
:
0
Ne
0.\On2e
C49
2.90} (On } on (3) 4.7k
3
Q>
Q>
>
7
i
2301823
29 | LOW-PASS
eae R42
|
(i)
6
(9)
oy
—_
8
FILTER
1K
2.
2.4
H bb bar 'L
: of) oat’ ata w | 13.5mA
RIPPLE ((2.3) Los DTC144EK .
| FILTER SWITCHING
0 C56
SW PUSH: 2.8) BY Bee ak,
—
Note :
: ; + Power voltage is dc 3V and fed with regulated dc power supply - Voltages are taken with a VOM ( tnput impedance 10M Q ).
* All capacitors are in I F unless otherwise noted. pF: uF from battery terminal. Voltage variations may be noted due to normal production
eae Bre nol idicated except tar slectiovtice and * Voltage and waveforms are dc with respect to ground under tolerances,
no-signal ( detuned ) conditions. * Signal path.
- All resistors are in 2 and %W or less unless otherwise no mark : FM i c> :FM
specified. ( >: MW
* A : internal component. « )) :SW
* [eee : B+ Line ( ) : OFF

SECTION 5
EXPLODED VIEW
NOTE:
@ -XX, -X mean standardized parts, so
they may have some difference from the
original one.
@ The construction parts of an assembled
part are indicated with a collation
number in the remark column.
Example :
@ Color indication of Appearance Parts
KNOB, BALANCE (WHITE)....(RED)
t t
Parts color
Cabinet’s color
@ Items marked “ * "are not stocked since
they are seldom required for routine
service. Some delay should be antici-
pated when ordering these items.
21
19
#1
Part No. Remark
Description
1-641-084-21 SWITCH BOARD
2 X-3367-284-1 CABINET (FRONT) ASSY
(AEP, UK, Italian, Saudi Arabia)
2 X-3367-285-1 CABINET (FRONT) ASSY (CE, Tourist)
3 3-904-503-01 BUTTON (BAND SELECTION)
4 3-900-137-01 BUTTON (OFF)
h) 3-880-990-00 SCREW (1. 7X3), FLAT, (+) SPECIAL
6 3-900-155-11 SCALE, DIAL
7 3-900-138-01 BUTTON (HOLD)
8 3-900-143-01 GEAR, MIDWAY
9 3-900-154-01 BEARING
10 3-900-160-01 POINTER
11 3-900-156-01 BELT (TUNING)
12 3-900-157-01 PULLEY
13 3-892-318-00 SCREW, SMALL
14 3-900-146-01 SPRING, DIAL
15 3-900-145-01 GEAR (B), TUNING CAPACITOR
16 3-900-144-01 GEAR (A), DIAL
_ 8-900-162-01 CHASSIS
18 3-900-142-01 PANEL, SW BAND INDICATION
19 3-900-159-01 KNOB (SW)
* 20 A-3661-854-A MAIN BOARD, COMPLETE
(AEP, UK, Italian, Saudi Arabia)
* 20 A-3661-856-A MAIN BOARD, COMPLETE (E, Tourist)
21 3-893-926-01 SPRING, COMPRESSION
22 3-900-150-01 KNOB, VOL
se
SPI
Part No. Description Remark
9-911-845-XX CUSHION (A)
3-311-815-11 WASHER, POLYETHYLENE
3-900-149-01 RETAINER
3-669-481-04 PIN (DIA. 1X12), PARALLEL
3-900-147-01 SHAFT, TUNING
3-900-151-01 SPRING, RING
3-900-148-01 KNOB, TUNING
3-900-158-01 STRAP, HAND
3-900-152-01 SPRING
3-900-153-01 TERMINAL, BATTERY
3-900-141-01 PLATE, CONTACT, ANTENNA
3-318-203-71 SCREW (Bl. 7X5), TAPPING
4-356-741-31 SCREW, TAPPING (BIND 2X8)
4-356-741-41 SCREW, TAPPING (BIND 2X20)
3-900-161-11 CABINET (REAR)
9-911-815-01 CUSHION (A)
3-889-802-71 LID, BATTERY CASE
X-3899-513-1 PLATE (F) ASSY, SHIELD
3-899-575-01 SHEET (STRAP)
9-911-841-XX CUSHION, CASSETTE LID
3-895-823-31 SCREW (Bl. 4X2. 3), TAPPING
1-501-432-11 ANTENNA, TELESCOPIC
8-719-812-41 LED TLR124 (TUNE)
1-402-434-11 ANTENNA, FERRITE-ROD (M¥)
1-504-318-11 SPEAKER (4CM)
@ The mechanical parts with no reference
number in the exploded views are not
supplied.
@ Hardware ( # mark)list is given in the
last of this parts list.

NOTE:
@ Due to standardization, replacements in
SECTION 6
@ Items marked “ * ”are not stocked since
ELECTRICAL PARTS LIST
When indicating parts by refer-
ence number, please include the
the parts list may be different from the they are seldom required for routine board.
parts specified in the diagrams or the service. Some delay should be antici-
components used on the set. pated when ordering these items.
@ -XX, -X mean standardized parts, so @ SEMICONDUCTORS
they may have some difference from In each case,u: 4 , for example:
the
original
one.
uA...
WA...
UPA...
2
PA...
@ RESISTORS UPB....: 44 PB.... , uPC....: {& PC....
All resistors are in ohms uPD....: & PD....
METAL : Metal-film resistor @ CAPACITORS
METAL OXIDE: Metal oxide-film resistor uF: “FPF
F : nonflammable @ COILS
uH: wH
Ref.No. Part No. Description Remark Ref.No. Part No. Description Remark
* A-3661-854-A MAIN BOARD, COMPLETE C22 1-163-097-00 CERAMIC CHIP 15PF 5% 50V
(AEP, UK, Italian, Saudi Arabia) (E, Tourist)
Pst SESSSESS SSS SSS CSS OSI STOPES LISS LS SEL 22 3 C22 1-163-104-00 CERAMIC CHIP 30PF 5% 50V
(AEP, UK, Italian, Saudi Arabia)
k A-3661-856-A MAIN BOARD, COMPLETE (E, Tourist) C23 1-163-090-00 CERAMIC CHIP PF 50V
KARR KEK ER EERKERERERERERERERE RES (E, Tourist)
3-892-318-00 SCREW, SMALL C23 1-163-095-00 CERAMIC CHIP 12PF 5% 50V
3-900-150-01 KNOB, VOL (AEP, UK, Italian, Saudi Arabia)
C24 1-164-232-11 CERAMIC CHIP 0. OluF 50V
< FILTER > C25 1-162-637-11 CERAMIC CHIP 0. 47uF 16V
C26 1-126-163-11 ELECT 4, TuF 20% 50V
BPF1 1-235-170-00 FILTER, BAND PASS (E, Tourist)
BPF1 1-235-171-00 FILTER, BAND PASS C27 1-126-157-11 ELECT 10uF 20% 16V
(AEP, UK, Italian, Saudi Arabia) C28 1-163-037-11 CERAMIC CHIP 0. 022uF 10% 25V
C29 1-126-153-11 ELECT 22uF 20% 6. 3V
< CAPACITOR > C30 1-124-434-00 ELECT 220uF 20% AY
C31 1-163-077-00 CERAMIC CHIP 0. luF 10% 25V
C2 1-164-232-11 CERAMIC CHIP 0. OluF 50V
C3 1-163-077-00 CERAMIC CHIP 0. luF 10% 25V C32 1-162-638-11 CERAMIC CHIP luF 16V
C4 1-164-232-11 CERAMIC CHIP 0. OluF 50V C33 1-124-434-00 ELECT 220uF 20% 4V
C6 1-163-059-00 CERAMIC CHIP 0. OluF 10% 50V C34 1-126-154-11 ELECT 47uF 20% 6. 3V
CT 1-163-009-11 CERAMIC CHIP 0. 001uF 10% 50V C35 1-163-001-11 CERAMIC CHIP 220PF 10% 50V
C36 1-163-113-00 CERAMIC CHIP 68PF 5% 50V
C8 1-163-095-00 CERAMIC CHIP 12PF 5% 50V
C10 1-164-232-11 CERAMIC CHIP 0. OluF 50V C3T 1-163-003-11 CERAMIC CHIP 330PF 10% 50V
Cll 1-164-232-11 CERAMIC CHIP 0. OluF 50V C38 1-163-111-00 CERAMIC CHIP 56PF 5% 50V
C12 1-164-232-11 CERAMIC CHIP 0. OluF 50V C39 1-164-232-11 CERAMIC CHIP 0. OluF 50V
C13 1-164-232-11 CERAMIC CHIP 0. OluF 50V C40 1-163-116-00 CERAMIC CHIP 91PF 5% 50V
C41 1-163-111-00 CERAMIC CHIP 56PF 5% 50V
C14 1-164-232-11 CERAMIC CHIP 0. OluF 50V
C16 1-126-154-11 ELECT ATuF 20% 6. 3V C42 1-163-251-11 CERAMIC CHIP 100PF 5% 50V
C17 1~163-086-00 CERAMIC CHIP 3PF 50V C43 1-163-251-11 CERAMIC CHIP 100PF 5% 50V
(E,
Tourist)
C44
1-126-153-11
ELECT
22uF
20%
6.
3V
C18
1-164-232--11
CERAMIC
CHIP
0.
OluF
50V
C47
1-162-637-11
CERAMIC
CHIP
0.
47uF
16V
C48 1-163-037-11 CERAMIC CHIP 0. 022uF 10% 25V
C19 1-126-163-11 ELECT 4, TuF 20% 50V
C20 1-163-086-00 CERAMIC CHIP 3PF 50V C49 1-163-023-00 CERAMIC CHIP 0. 015uF 5% 50V
C21 1-163-100-00 CERAMIC CHIP 20PF 5% 50V C50 1-163-023-00 CERAMIC CHIP 0. 015uF 5% 50V
(AEP, UK, Itarian, Saudi Arabia) C52 1-163-037-11 CERAMIC CHIP 0. 022uF 10% 25V
Cat 1-163-103-00 CERAMIC CHIP 27PF 5% 50V C53 1-164-232-11 CERAMIC CHIP 0. OluF 50V
(E, Tourist) C54 1-126-153-11 ELECT 22uF 20% 6. 3V