Sony CDX-616 Manuale utente
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)
1
screw
(PTT2.6
×
6)
1
screw
(PTT2.6
×
6)
2
cover (upper T)
1
screw
(PTT2.6
×
6)
1
screw
(PTT2.6
×
6)
1
screw
(PTT2.6
×
6)
3
lever (FLT)
3
lever (FLT)
4
front panel ass’y
2
tension spring (FL)
2
tension spring (FL)
1
two dampers (250)
1
two dampers (250)
3
jack flexible board
(CNJ901)
4
mechanism deck (MG-250C-137)
– 8 –
JACK BOARD
MAIN BOARD
Remove the jack board of
the arrow.
1
ground point screw
(PTT2.6
×
6)
2
jack board
1
main flexible board
(CNJ12)
6
three screws (FP)
7
main board
2
connector
(CNP301)
3
screw
(PTT2
×
3)
4
heat sink
5
two precision screws
(P1.7
×
2.5)
– 9 –
ELEVATOR MOTOR ASS’Y (M104)
ESCUTCHEON (T)
1
screw
(PTT2
×
3)
2
bracket (EVM)
3
elevator motor ass’y
(M104)
2
Remove the claw
of the arrow
A
.
4
Remove the ditch
of the arrow
B
.
A
B
5
Remove the escutcheon (T)
of the arrow
C
.
4
ditch
3
claw
C
3
two claws
1
screw
(M2
×
3)
– 10 –
CASE (UPPER) ASS’Y
CHASSIS ASS’Y
1
three screws
(PTT2
×
4)
1
two screws
(PTT2
×
4)
2
4
Remove the case
(upper) ass’y of
the arrow
B
.
3
Remove the edge
of the arrow
A
.
1
screw
(PTT2
×
4)
A
B
3
chassis ass’y
1
two polyethylene washers
2
2
– 11 –
RF BOARD
SLED MOTOR ASS’Y (M102), OPTICAL PICK-UP (KSS-521A/J2N)
2
two screws
(PS2
×
4)
4
connector
(CNP52)
4
two connectors
(CNP11, 53)
5
RF board
2
two screws
(PS2
×
4)
1
OP flexible board
(CNJ11)
3
1
two screws
(ESCUTCHEON)
4
Turn at the direction of the
arrow, then remove
shaft (sled) ass’y.
2
sled motor ass’y
(M102)
3
optical pick-up
(KSS-521A/J2N)
– 12 –
SW BOARD, SPINDLE MOTOR ASS’Y (M101)
CHUCKING MOTOR ASS’Y (M103)
8
two screws
(P1.7
×
2.2)
7
3
spring (chucking)
6
retainer (disc)
4
screw
(P2
×
2.2)
5
bracket (CP)
9
Remove the spindle motor ass’y (M101)
of the arrow.
2
SW board
1
screw
(P2
×
2.2)
2
two screws (P2
×
2.5)
4
chucking motor ass’y
(M103)
1
connector
(CNP51)
3
retainer (CHM)
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1
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