SONY STEX880 - Service Manual Immediate Download

MICROFILM

SERVICE MANUAL

FM STEREO/FM-AM TIMER TUNER

AEP Model

UK Model

ST-EX880

E Model

Tourist Model

ST-MS717

SPECIFICATIONS

ST-EX880/MS717

ST-EX880/MS717 are the tuner section

in DHC-EX880MD/MD717.

Photo: ST-MS717

TABLE OF CONTENTS

SERVICING NOTES ............................................... 2

GENERAL ................................................................... 3

DISASSEMBLY ......................................................... 5

ELECTRICAL ADJUSTMENTS ......................... 6

DIAGRAMS

5-1. Note for Printed Wiring Boards and

Scehmatic Diagrams ....................................................... 7

5-2. Printed Wiring Board MAIN Section

(ST-EX880) ..................................................................... 9

5-3. Printed Wiring Board MAIN Section

(ST-MS717) ..................................................................... 11

5-4. Schematic Diagram MAIN Section (1/2) ................. 13

5-5. Schematic Diagram MAIN Section (2/2) ................. 15

5-6. Printed Wiring Board PANEL Section ..................... 17

5-7. Schematic Diagram PANEL Section ........................ 19

5-8. Schematic Diagram RDS Section (ST-EX880) ........ 21

5-9. Printed Wiring Board RDS Section (ST-EX880) ..... 21

5-10. Schematic Diagram POWER Section ...................... 22

5-11. Printed Wiring Boards POWER Section .................. 23

5-12. IC Pin Function Description ........................................... 25

EXPLODED VIEWS ................................................ 29

ELECTRICAL PARTS LIST ............................... 31

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK

! OR DOTTED

LINE WITH MARK

! 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

SERVICING NOTES

KEYs FLUORESCENT INDICATOR TUBE/LEDs

CHECK MODE (Work a separately)

1. Press [POWER] button.

2. Press two buttons [POWER] and [SLEEP] simultaneously.

3. LEDs are all turned on, the fluorescent indicator tube displays

"KEY/FL/LED", and the check mode is set.

1 All LED indicators light on mode

2 All Fluorescent indicator tube light on mode

3 ST segment mode

4 RDS segment mode

5 Encoder and key check mode

Note:

All LED light on mode is kept, when buttons which is pressed to

enter all LED light on mode, release same time.

When release them separate timing, it is moved to next All Fluores-

cent indicator tube light on mode.

After all LED light on mode, light on point remove one by one, when

any button pressed or [MULTI CONTROLLER] knob turned.

Under KEY check mode, every time buttons pressed numerical value

of "KEY=" in FL tube increase.

And that time, numerical value of "ECDR=" increase when

[MULTI CONTROLLER] button turn to + direction, and it decrease

turn to direction.

To exit from this mode, disconnect the power cord.

TUNER CHECK MODE (Work a separately)

1. Press [POWER] button.

2. Press two buttons [POWER] and [ENTER/YES] simultaneously,

and the tuner check mode is set.

3. System power on, set up the tuner function, and test condition

inactive.

Press two buttons [POWER] and [ENTER/YES] simultaneously

to exit, and system power off.

COLD RESET (Work a complex)

The cold reset clears each unit microcomputer memory to initial

conditions.

1. Press [POWER] button to turn the set OFF.

2. Press three buttons [MENU/NO], [PRESET], and [POWER]

simultaneously.

3. A message "COLD SET OK" is displayed on the fluorescent

indicator tube two seconds.

4. Press [POWER] button to turn the set OFF.

5. Remove power cord after the clock is displayed on the fluo-

rescent indicator tube.

6. Connect power cord, press [POWER] button to turn the set

ON, and the set is reset.

4-995-091-1: Hong Kong, Singapore, Malaysia

4-995-091-2: AEP, UK

4-995-091-3: Tourist

MODEL IDENTIFICATION

Back Panel

SECTION 2

GENERAL

This section is extracted from

instruction manual.

LOCATION OF CONTROLS

Front Panel

Rear Panel

1 I/u (POWER) button

2 REMOTE CONTROL receiver

3 ONCE, DAILY, REC, SLEEP indicator

4 REC button

5 DAILY button

6 ONCE button

7 CLOCK/TIMER SET button

8 STEREO/MONO button

9 SLEEP button

!º MULTI CONTROLLER knob

!¡ ENTER/YES button

!TM MENU/NO button

!£ BAND button

!¢ RESET button

! Fluorescent indicator tube

!§ AUTO/n button

!¶ MANUAL/N button

!· DISPLAY button

!ª TUNER OUT terminal

@º FM/AM ANTENNA terminal

@¡ AU BUS terminal

@TM SYSTEM CONTROL terminal

@£ AC OUTLET (for TA-MS717)

@¢ POWER cord

MAIN BOARD

Note: Follow the disassembly procedure in the numerical order given.

SECTION 3

DISASSEMBLY

3 case

0 three screws

(BVTP3

× 10)

1 two screws

(case3 TP2)

4 flat type wire (19 core)

(CN102)

!¡ claw

7 two claws

6 two screws

(BVTT3

× 6)

7 claw

8 front panel ass'y

5 connector

(CN104)

!¡ claw

!TM MAIN board

9 two screws

(BVTP3

× 8)

1 two screws

(case3 TP2)

2 screw

(BVTT3

× 6)