Sony CDX-616 Bedienungsanleitung

MICROFILM

SERVICE MANUAL

REVISED

Discard the SERVICE MANUAL (No. 9-926-404- )

previously issued.

COMPACT DISC CHANGER

AEP Model

UK Model

CDX-616

Model Name Using Similar Mechanism CDX-605

CD Drive Mechanism Type MG-250C-137

Optical Pick-up Name KSS-521A/J2N

SPECIFICATIONS

– 2 –

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.

TABLE OF CONTENTS

1. SERVICING NOTES ................................................ 3

2. GENERAL

Installation....................................................................... 5

Connections ..................................................................... 6

3. DISASSEMBLY ......................................................... 7

4. MECHANISM DECK ASSEMBLY..................... 13

5. MECHANICAL ADJUSTMENTS....................... 15

6. ELECTRICAL ADJUSTMENTS......................... 16

7. DIAGRAMS

7-1. Block Diagram

– SERVO/DA CONVERTER Section – ......................... 19

7-2. Block Diagram – CD TEXT DECODER/

BUS CONTROL/POWER SUPPLY Section – .............. 21

7-3. Note for Printed Wiring Boards and

Schematic Diagrams ....................................................... 23

7-4. Printed Wiring Boards – RF/SW Boards –.................... 25

7-5. Schematic Diagram – RF/SW Boards – ......................... 27

7-6. Printed Wiring Board

– MAIN Board (Component side) – ............................... 29

7-7. Printed Wiring Board

– MAIN Board (Conductor side) –................................. 31

7-8. Schematic Diagram – MAIN Board (1/2) – ................... 33

7-9. Schematic Diagram – MAIN Board (2/2) – ................... 35

7-10. Printed Wiring Board – JACK Board – .......................... 37

7-11. Schematic Diagram – JACK Board – ............................. 38

7-12. IC Pin Function Description ........................................... 44

8. EXPLODED VIEWS ................................................ 47

9. ELECTRICAL PARTS LIST ............................... 52

– 3 – – 4 –

SECTION 1

SERVICING NOTES

NOTES ON HANDLING THE OPTICAL PICK-

UP BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suffer electro-

static breakdown because of the potential difference generated by

the charged electrostatic load, etc. on clothing and the human body.

During repair, pay attention to electrostatic breakdown and also

use the procedure in the printed matter which is included in the

repair parts.

The flexible board is easily damaged and should be handled with

care.

Laser Diode Properites

• Material: GaAlAs

• Wavelength: 780 nm

• Emission Duration: continuous

• Laser Output Power: less than 44.6 µW*

* This output is the value measured at a distance of 200 mm

from the objective lens surface on the Optical Pick-up Block.

CAUTION

Use of controls or adjustments or performance of procedures

other than those specified herein may result in hazardous ra-

diation exposure.

Flexible Circuit Board Repairing

• Keep the temperature of the soldering iron around 270 ˚C dur-

ing repairing.

• Do not touch the soldering iron on the same conductor of the

circuit board (within 3 times).

• Be careful not to apply force on the conductor when soldering

or unsoldering.

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.

DISC MAGAZINE GETTING OUT PROCEDURE

ON THE POWER SUPPLY IS OFF

Remove the CASE (LOWER) assembly beforehand

1) Press the lever (ML) assy to arrow direction.

2) Removal the magazine assy.

Note: Take out the magazine only when the tray is completely within the

magazine. If the disk or tray is sticking out, turn on the power and

eject the magazine.

SECTION 2

GENERAL This section is extracted from

instruction manual.

Magazine ass’y

Lever (ML) ass’y

– 5 – – 6 –

– 7 –

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

COVER (UPPERT), FRONT PANEL ASS’Y

SECTION 3

DISASSEMBLY

MECHANISM DECK (MG-250C-137)

screw

(PTT2.6

screw

(PTT2.6

cover (upper T)

screw

(PTT2.6

screw

(PTT2.6

screw

(PTT2.6

lever (FLT)

front panel ass’y

tension spring (FL)

two dampers (250)

jack flexible board

(CNJ901)

mechanism deck (MG-250C-137)

– 8 –

JACK BOARD

MAIN BOARD

Remove the jack board of

the arrow.

ground point screw

(PTT2.6

jack board

main flexible board

(CNJ12)

three screws (FP)

main board

connector

(CNP301)

screw

(PTT2

heat sink

two precision screws

(P1.7

2.5)

– 9 –

ELEVATOR MOTOR ASS’Y (M104)

ESCUTCHEON (T)

screw

(PTT2

bracket (EVM)

elevator motor ass’y

(M104)

Remove the claw

of the arrow

Remove the ditch

of the arrow

Remove the escutcheon (T)

of the arrow

ditch

claw

two claws

screw

(M2

– 10 –

CASE (UPPER) ASS’Y

CHASSIS ASS’Y

three screws

(PTT2

two screws

(PTT2

Remove the case

(upper) ass’y of

the arrow

Remove the edge

of the arrow

screw

(PTT2

chassis ass’y

two polyethylene washers

– 11 –

RF BOARD

SLED MOTOR ASS’Y (M102), OPTICAL PICK-UP (KSS-521A/J2N)

two screws

(PS2

connector

(CNP52)

two connectors

(CNP11, 53)

RF board

two screws

(PS2

OP flexible board

(CNJ11)

two screws

(ESCUTCHEON)

Turn at the direction of the

arrow, then remove

shaft (sled) ass’y.

sled motor ass’y

(M102)

optical pick-up

(KSS-521A/J2N)

– 12 –

SW BOARD, SPINDLE MOTOR ASS’Y (M101)

CHUCKING MOTOR ASS’Y (M103)

two screws

(P1.7

2.2)

spring (chucking)

retainer (disc)

screw

(P2

2.2)

bracket (CP)

Remove the spindle motor ass’y (M101)

of the arrow.

SW board

screw

(P2

2.2)

two screws (P2

2.5)

chucking motor ass’y

(M103)

connector

(CNP51)

retainer (CHM)

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