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E Model

Australian Model

ST-S90D is the tuner section in
MHC-S90D.

2003D0200-1

C

 2003.04

Tuner section
FM stereo, FM/AM superheterodyne tuner

FM tuner section
Tuning range

87.5 – 108.0 MHz

Antenna

FM lead antenna

Antenna terminals

75 ohm unbalanced

Intermediate frequency

10.7 MHz

AM tuner section
Tuning range
Pan American model:

530 – 1,710 kHz
(with the interval set at 10 kHz)
531 – 1,710 kHz
(with the interval set at 9 kHz)

European and Middle Eastern models:

531 – 1,602 kHz
(with the interval set at 9 kHz)

Other models:

531 – 1,602 kHz
(with the interval set at 9 kHz)
530 – 1,710 kHz
(with the interval set at 10 kHz)

Antenna

AM loop antenna

Antenna terminals

External antenna terminal

Intermediate frequency

450 kHz

Dimension (w/h/d)

Approx. 280 x 108 x 340 mm

Mass

Approx. 2.1 kg

Design and specifications are subject to change without notice.

2

................................................

2

Location of Controls .......................................................

3

3-1. Disassembly Flow ...........................................................

5

3-2. Case .................................................................................

6

3-3. Front Panel Section .........................................................

6

3-4. Panel Board, Sircs Board ................................................

7

3-5. Tuner Pack (FM/AM) .....................................................

7

3-6. Main Board ......................................................................

8

3-7. DSP Board .......................................................................

8

..............................................................

9

5-1. Note for Printed Wiring Boards and

Schematic Diagrams ....................................................... 10

5-2. Schematic Diagram  – MAIN Board (1/2) – .................. 12
5-3. Schematic Diagram  – MAIN Board (2/2) – .................. 13
5-4. Printed Wiring Board  – MAIN Board – ........................ 14
5-5. Printed Wiring Board  – DSP Board – ............................ 15
5-6. Schematic Diagram  – DSP Board (1/2) – ..................... 16
5-7. Schematic Diagram  – DSP Board (2/2) – ..................... 17
5-8. Printed Wiring Boards  – PANEL Section – .................. 18
5-9. Schematic Diagram  – PANEL Section – ....................... 19
5-10. IC Pin Function Description ........................................... 20

6-1. Case, Front Panel Section ............................................... 26
6-2. Chassis Section ............................................................... 27

............................... 28

Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-

aged by heat.

COMPONENTS  IDENTIFIED  BY  MARK  0  OR  DOTTED
LINE  WITH  MARK  0  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.

This set is a component of the MHC-S90D.
The MHC-S90D system configuration is as shown below, and
therefore it does not operate normally unless all four components
are connected.
In performing the repair, connect all components with the system
cables.
Note: The precaution to the users is described on the label stuck
on the back panel (DVD/video CD/CD player) and in the trouble-
shooting section in the Operation Manual.

POWER SUPPLY

AC IN

TA

MASTER & GRAPHIC 

µ

con

ST

TC 

µ

con

TC

DISPLAY

HTC & MB 

µ

con

DVP

POWER BLOCK

PART No.

MODEL

PART No.

E15 and Singapor models

4-244-854-0

[]

Australian model

4-244-854-1

[]

Saudi Arabia model

4-244-854-3

[]

•Abbreviation

E15  :  220 – 240 V AC Area in E model

3

1 ANTENNA terminal

2 SYSTEM CONTROL 1 connector (TO TA-S90D)

3 SYSTEM CONTROL 2 connector (TO TA-S90D)

4    SYSTEM CONTROL 3 connector (FROM DVP-S90D)

5 OPTICAL IN terminal

6 OPTICAL IN terminal (FROM DVP-S90D)

7 SYSTEM CONTROL 4 connector (TO TC-S90D)

8 OPTICAL OUT terminal

9 SUB WOOFER OUT jack

0 MD IN/OUT jack

qa VIDEO (AUDIO) IN jack

This section is extracted from
instruction manual.

1

2

3

4

5 6 7 8

0

9

qa

CLOCK/TIMER wj
DISPLAYqk
ENTERws
IR receptor wk
PRESET –/+ wf
STEREO/MONOql
TIMER SELECT wh
TUNER/BAND wg
TUNER MEMORY w;
TUNING –/+ wa

–

–

+

+

qk

qlw; wa

ws

wf

wg

wh

wj

wk

4

ANGLE es
AUDIO ws
CLEAR qs
CLOCK/TIMER SELECT 3
CLOCK/TIMER SET 2
DBFB ra
D.SKIP 9
DIGITAL rf
DISPLAY rj
DVD DISPLAY wd
DVD MENU wa
DVD SET UP ql
ENTER wj
EQ ea
EQ ON/OFF  wl
FILE SELECT +/– wh
FUNCTION rd
GROOVE rs
KARAOKE PON (Except for

North American and European
models) el

MD rh
Numeric buttons  8
PLAY MODE qa
REPEAT q;
RETURN O qd
SELECT DVD N eh

SET UP wf
SLEEP 1
SLOW t/T qk
SPECTRUM ANALYZER rk

STEP c/C ef
SUBTITLE ed
SUR e;
TAPE A nN ek
TAPE B nN qf
TITLE w;
TUNER/BAND ej
TV @/1 4
TV CH +/– 7
TV/VIDEO rl
TV VOL +/– 6
VIDEO rg
VOL +/– wg

x

M

m

>

.

nN

O

X

T

t

C

c

V

v

B

b

1 2 3 4 5

e;

es

ef

ej

eg

6

7

9

8

q;

qa

qd

qs

qf

qg

qj

qh

qk

ql

wa

wd

ws

wf

w;

wg

wj

wh

wk

ed

wl

ea

eh

el

rs

ra

rd

ek

r;

rg

rj

rl

rf

rh

rk

@/1 (power)  5
X (pause)  qj
x (stop)  qg
m/M (rewind/fast forward),

TUNING –/+  qh

./> (go backward/

go forward), PRESET –/+,
PREV/NEXT eg

O/o/P/p wk

>10 r;

This section is extracted from
instruction manual.