Sony IGF-M50RDS User manual

_IGF-MOORDS
SERVICE MANUAL AEP Model
UK Model
SBEND seen sea
SPECIFICATIONS
Time display: Note
UK: 12-hour system This appliance conforms with EEC Directive 87/
Other countries: 24-hour system 308/EEC regarding interference suppression.
Frequency range: These instructions cover two models:FM/MW /
LW or FW/MW/SW
—— The band for each model and the area where the
Band _Frequency range Channel step model is available are shown balow.
FM 87.5 - 108 MHz 0.05*MHz(fixed) _—
MW 531 -1,602 kHz 9kHz(fixed) Where available Band
LW 153-279 kHz 9kHz(fixed) UK FM/MW/LW
Sw 5,800 - 6,400kHz — 5kHz(fixed) Other countries FM/MW/LW
FM/MW/SW
* The frequency display is raised or lowered by a
step of 0.1MHz.(Example: Frequency 88.05MHz
is displayed as “ 88.0MHz“.)
Intermediate frequency:
FM: 10.7 MHz, MW: 450 kHz
Speaker: Approx. 9.2 cm (3 5/ inches) dia. 8Q
Power output: 450 mW (at 10% harmonic
distortion)
Output: Earphone jack (minijack)
Power requirements: U.K.:240 V AC,50 Hz
Other counties:220-230 V AC, 50 Hz
6 V DC, four R6(size AA) batteries
Battery life: Approx. 15 hours listening for 4
hours a day at a normal volume using Sony
batteries SUM-3 (NS)
Dimensions: Approx. 240 x 116 x 61 mm
(w/h/d) (Approx. 9 1/2 x 45/8 x 2 1/2 inches)
not incl. projecting parts and controls
Mass: Approx. 900 g (2 Ib)incl. batteries
Accessories supplied: AC power cord (1)
FM antenna coupler (1) (Models for
Netherlands, Switzerland,Belgium and
Scandinavia only)
.
Design and specifications subject to change FM /MW/LW aBand RDS Radio
without notice.
FM/MW/SW 3Band RDS Radic
SONY.

TABLE
OF
CONTENTS
Section
Title
Page
Te:
“GENERAL:
ssseecsteetsacnseevesisresaveteinvadeosiitesehsdavetiondean
3
2.
ADJUSTMENTS.
«-000-0::ccesesssssssscsessccscsserseseserssaceserseesece
4
3. DIAGRAMS
3-1. IC Pin Function
©
IC101
(System
Control)
UPD75308GF-R90-3B9
-srs+esssseeesseneseeees
6
3-2.
Semiconductor
Lead
Layouts
srsrettseeeeerscsccesesevsensecescncensees
q
3-3.
Printed
Wiring
Boards
crorrsssseccscsecssescceccessecscascctsnsseecsecs
8
3-4.
Schematic
Diagram
vrrerereeeresescsccecnccecsceteevecsvcecssatesceessees
11
4.
EXPLODED
VIEW
4-1
7
Cabinet
Section
COSCO
tee
r
ener
ea
rremerereeneee
me
reeserresseaseserenestonee
1§
SAFETY-RELATED
COMPONENT
WARNING!!
COMPONENTS
IDENTIFIED
BY
MARK
A
OR
DOTTED
LINE
WITH
MARK
A
ON
THE
SCHEMATIC
DIAGRAMS
AND
IN
THE
PARTS
LIST
ARE
CRITICAL
TO
SAFE
OPERATION.
REPLACE
THESE
COMPONENTS
WITH
SONY
PARTS
WHOSE
PART
NUMBERS
APPEAR
AS
SHOWN
IN
THIS
MANUAL
OR
IN
SUPPLEMENTS
PUB-
LISHED
BY
SONY.

SECTION 1
GENERAL
This section is extracted
from instruction manual.
KEY PROTECT POWER
STANDBY AC OPERATIONO
MHz/kHz PRESET
STATION NAME © CLOCK AUTO ALTERNATIVE TRAFFIC INFO
ADJUST SEARCH
STATION R
Ce
_ ©
CLOCK
BAND
———_ PRESET TUNING —————
e
OOOO?
EYRADIO) BUZZER STANDBY MODE
(O oa TUNE/
ENTER/CLOCK _> TIME SET
- Telescopic antenna
Antenne télescopique
Teleskopantenne
R6(AA)x4 |

SECTION 2
ADJUSTMENTS
AM SECTION
AM RFF signal
generator
put the lead-wire
antenna close to
MO the set
(Games
400Hz, 30%
AM modulation
Output level: as low as possible
FM SECTION
FM RF signal
generator
telescopic antenna
input
(aes
400Hz, 30% FM modulation
frequency devition +22.5kHz
Output level: as low as possible
AM IF ADJUSTMENT
Adjust for a maximum reading on VOM.
450 kHz
MW VCO ADJUSTMENT
Adjustment Frequency
Part Voltmeter
Lg
Confirm
LW VCO ADJUSTMENT
Adjustment Frequency Reading on Digital
Display Voltmeter
Part
CT5
Confirm
153 kHz 2.3+0.1 V
279 kHz 8.341V
LW TRACKING ADJUSTMENT
Adjust for a maximum reading on VOM.
L10 (LW) 162 kHz
243 kHz
EARPHONE jack
digital voltmeter
[_]
Jw9 =e
@ Repeat the procedures in each adjustment several times, and
the tracking adjustments should be finally done by the trimmer
capascitors.
SW VCO ADJUSTMENT
Part . Display Voltmeter
| is] MHz | 8t0lv |
Part Display Voltmeter

Adjustment Location
LW Tracking 162 kHz LW VCO 153 kHz FM Tracking 108 MH
z
MW
Tracking
1,404
kHz
MW
VCO
531
kHz
LW
Tracking
243
kHz
SW
VCO
5.8
MHz
FM
Tracking
87.5
MHz
SW Tracki .4 MH i
MW Tracking 621 kHz Packing Bee Mz SW Tracking 5.8 MHz
N\
UT SS NTT cu gts
Tae > CIEEPET PEPE T ETE TE J @
L10 : -
Oct =| c11®
L5
@)cta cts@)
L918
11
AM IF 450 kHz

SECTION 3
DIAGRAMS
3-1. IC PIN FUNCTION
@ IC 101 (SYSTEM CONTROL) vPD75308GF-R90-3B9
$12 10 $20
21 to 24 | COMO to COM3
BIAS
26 to 28 | VLCO to VLC2
29 to 32 | KSO to KS3
=
25
TIMER
(H : Alarm operation at radio, turn up the volume slightly when a traffic infomation is received)
[as [eermesr [0 [tstnirtcteyet
Tas [ws fe OCOC~—SSCSC“CSCSC“S*S*S~S~“S~S~SSS
[ar [wart [0 [Wi Wientiattopmaing Qos ——SSSCSCSC~“~*~*~*~*~*Y
Tap [ecm [0 | Recivingevelouputclck Wome)
[0 [otanx | 0 | Recivingievloupudan Wormed
Pa fve [hawt OSCSSSC“CSCOCSC*S
Te [ouwmos [1 [Rose SCSCSCS~SOSCSC‘S
[a [otamps [1 [eos SCSCSC~—~—SCSCS
[5 [sp | 1 | Satiosignl GsAtolesingsaionkese) SS
Fe
a
[—« [pre[o [pcm OOSCSC—C—CSCSCSCSCS
(fiat [0 [rtm OSCSC—SCSCSCSSCS
[50 [rowen | 0 | Poversupi ofnaio G@irowroy SSS
Psi [More | 0 [Mie imum SSCS
s2_[uatmx | 0 | Rescving evel oupuch Wome ——SSSSCSCSCSCSCS~*SY
| 53 [FM ss || | FM output (H: When FM receiving)
[se [vp — [romney oS)
Css [an —«df 7
Crystal oscillation (32.768kHz)
a
ee Ee |
[so [xed Ceramic oscillation (2.62MHz)
(co ermone | 1 | chanieswicting wich (eAvionatineseting Hino
PS-MODE fede | PS indication switching switch (L : Frequency/station name indication, H : Present time indication)
Fe
Pane ee el
iow LCD indication segment
62 to 67 | KROto KRS
69 to 80 | SOtoSII1

ICF-M50RDS
3-2.
SEMICONDUCTOR
LEAD
LAYOUTS
CXA1019M
(TOP view)
CXD1118M
14 8
I 7
(TOP VIEW)
S-80728AN
S-80736AN
S-80745AN
~
V
ae
Output
S-81230PG
S-81240PG
1
Oo t
1 Wp Our
Vss
SAA6579T
(TOP VIEW)
UPD75308GF-R90-3B9
(TOP VIEW)
2SA1162-G
2SB1295-UL6
28C2712-YG
2SC2714-Y
2SC3395
DTA144TK
DTC144EK
BD
2SC2001TP
m
=
.@)
uo
02DZ13-TPH3
10—}q-—0 2
10E2
CATHODE
ANODE
1$S355
1T362
ANODE |
CATHODE
—p>t—.
2
2 3 !
GL3PR8
~ : short
anobe cathode
¢ Semiconductor Location
I I 1 I I
=a =-—2 =] OA =~ st rH OMOON WA OO BR WO WO
MONMNNMNND NY
NM ©
B
B
C
B
B
D
E
E
Cc
D
D
B
C-
C
D
D
Cc
Cc
Cc
D
Cc
D
C
I i] ! I I I t l
I 1 I 1 tf 4 I I
—~- + OOAAWWAATHKAWNN AA AGA O NM @®w ODWDONOUOMMIANTDVTIAINNIANIANINONO
i
t

3-3. PRINTED WIRING BOARDS
i.
tk
ee
EO
ee
ee
ee
ee
he
ANT \
TELESCOPIC ANTENNA
[MAIN
BOARD]
[KEY
BOARD)
pe eee IO bl
| MW I TYPE2,G,IT
Jl
18
DRY
BATTERY
am
alts
(es
Bem
oC
A a
/
Ae-to
wii
oe
Oe
(IEC
DESIGNATION"R6)
aa
ba
el
let
slet
BY)
a
VS
fete
4PCS,6V \ &
REO
Seen
653
—
213—
tae
SPI —653-2]0—
SPEAKER =pes7 eis i
Note:
@ o—-: parts extracted from the component side.
: Pattern from the side
F which enables seeing.
(The other layers’patterns are not indicated. )
Caution:
Pattern face side: Parts on the pattern face side seen from
(Conductor Side) the pattern face are indicated.
Parts face side : Parts on the parts face side seen from the
(Component Side) parts face are indicated.
e Abbreviations
G: German aed ps 1: FM, MW, LW
IT: Italian TYPE 2: FM, MW, SW
—8-
—9-
—10—
— —

3-4. SCHEMATIC DIAGRAM
2
3
4
5
6
7
|
8
9
10
11
PH TYPE2 GIT.
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fe
KV1560-TROO
VT
:
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9
ne
BAR-ANTENNA
,,©
a
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RB
tpl
FM
if
10K
C12
100K
"00K
10K
!
ROD~
ANTENNA
1000P
B
0.01
B
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2SA812-TI-M5M6
\
L9
Q7TIMERSWITCH
1
150P
SL
z
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3S
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(
i
105
2
R48
100K
\
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t t
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= 68P SL l
1
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|
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[MAIN
—_— os i ee eee oe
BOARD] 7 7
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t
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4
1000P SL
5 a ont pd rt TE eI oe ned
FM AM AM
F.E. FM
IF
OUT
GND
RF
IN
ANT
RF
Osc osc
C101
AF
10
BANO
AN
FM
F
AFC(U)
AFC(J)
DET
AF
RIPPLE
AF
gies
SELECT
iF
IN|
FIN
METER
GND AGC
AGC
OUT
WW
FILTER
VCC
OUT
CXDINBM-T4
0.1
F
C104
|
Burial
LAT CLK VB8B woop B
DIN
pPD75308GF 53
SYSTEM CONTROL
(3
R106 100K
slim
GND DET Rie
%
C38
0.022
p:TYPE2,6,IT
Serene
aeeeeerisoeeme
eel
%C32 0.0ly =TYPE2,G,IT
Ol =TYPE!,UK
LOW PA
2S8C1623-Ti-L5L6
28C1623-T1-L5L6
% C33 0,047p:TYPE2,6,1T AM oF
0.01 =TYPEI,UK
SWITCH
2SC1623-T1-L5L6
% C74: TYPE2,G,IT
za wu o
= nN
C62 0.01 B
K
{ ee =
=
t
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=
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=
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EXCEPT
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x
=
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es
z
iS
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ry
a
KR3
csa
2
Ps
=
1F
ps
FF
$105
IN4002AT-93
=
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$-81230PG-PB-T1
|
2SC1623-T1-L5L6
2SC1623-T1-L5L6
dail
ty
POWER
D0/D CONVERTER SWITCH
KRS
cit4
$-80728AN-DR-T1
TYPE 1, UK
mmr
mb
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poe
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MW
LW
BARANT
KVIS63MTL-2,3
1
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¢
KV1563MTL-2,3
L
|
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VT
|
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oe
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con
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|
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WB
BE
oak
he
ey
eee
4
T
EW
ASS
Spr
SS
KS3
~ TEST LCD&KEY
ENT/CLOCK
:
NE—- / TIME SET—
UNE+/ TIME SET+
4
AND
RAFFIC INFO
LTERNATIVE SEARCH
RESET TUNING I/A RADIO
RESET TUNING2/B BUZZER
PRESET TUNNING4
PRESET TUNNINGS/STAND BYMODE
ENTER/ CLOCK

®@ Voltages of Semiconductors
1C1 1C2 1101 C106
ome Ate] (age Faceicre| [equ Fafa] [en FoR
L FM | MW | FM | MW | LW | SW | FM | MW | FM | Mi
beh 1010) ae ee ae a
| 3 | (Of =O] ot
| 4 | 3] 13) 0.1
| 29) | =O | 5 | tO
ae eee | 6 | 0.8] 0.8/ 0.8} 0.8} [| 30 | Of 0 ae ae a a
a Cae eC) a) a ae a) ae)
| 8 | 1.3] 13 ae ae) a ed | 32 | Ol ae ae ee) ea)
| 9 | 1.3] 1.3] a) ee) ae a ee) ee)
a ae a) |) | 10 | Of 0
eae aa Ka 35 |" 20). 0 a a a)
| 12 [04] 0 | 36 | | 12 | 4] 0
a ee ee) | 37_—| SC eee eee)
| 14 | 13] 0.2 es a a)
| 39 | 0.9] 0.9)
| 16 | oO] 0 | 40 0.9] 0.9) 0.2
ee ee ae
ee a
a7 a
a a)
| 24 | lo} iE
c= Ol 0)
ae a
Fee ee eel | ee)
Note:
e@ All capacitors are in wF unless otherwise noted. pF: uur
50WV or less are not indicated except for electrolytics
and tantalums,
Note: The components identified by mark A or dotted eee BOA one Sedan ee |
. line with mark are critical for safety. Ref No. | FM | MW | L¥ | FM | MW] L¥ | FM | MW [ LY |
Replace
only
with
part
number
specified.
ae
a
a
Ee
es
ee
es)
e : B+ Line
@ Power voltage is dc V and fed with regulated dc power
supply from external power voltage jack.
e Voltage and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
e@ Voltages are taken with a VOM (Input Impedance 10M°).
Voltage variations may be noted due to normal produc-
tion tolerances.
@® Signal path.
c> : FM
@ Abbreviations
G:German AEP Pe 1: FM, MW, LW
IT : Italian TYPE 2: FM, MW, SW
[Ref No. | B | E |
| O12 | 0.4] 0)
| 13 | 0.6] 0)
| O14 [5.3] 6
| O15 | 0.7] 0)