Sony MDXC-6500-X Service manual
MDX-C6500X
SERVICE MANUAL
• The tuner and MD sections have no adjustments.
SPECIFICATIONS
AUDIO POWER SPECIFICATIONS (US Model)
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
19 watts per channel minimum continuous average power into
4 ohms, 4 channels driven from 20 Hz to 20 kHz with no more
than 1% total harmonic distortion.
US Model
Canadian Model
E Model
Model Name Using Similar Mechanism NEW
Mini Disc Mechanism Type MG-164NZ-138
Optical Pick-up Name KMS-241C/J1NP
Other Specifications
MD player section
Signal-to-noise ratio 90 dB
Frequency response 10 – 20,000 Hz
Wow and flutter Below measurable limit
Laser Diode Properties
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.
Tuner section
FM
Tuning range US, Canadian model:
Antenna terminal External antenna connector
Intermediate frequency 10.7 MHz/450 kHz
Usable sensitivity 8 dBf
Selectivity 75 dB at 400 kHz
Signal-to-noise ratio 66 dB (stereo),
87.5 – 107.9 MHz
E model:
FM tuning interval:
50 kHz/200 kHz switchable
87.5 – 108 MHz
(at 50 kHz step)
87.5 – 107.9 MHz
(at 200 kHz step)
72 dB (mono)
Harmonic distortion at 1 kHz
0.6% (stereo),
0.3% (mono)
Separation 35 dB at 1 kHz
Frequency response 30 – 15,000 Hz
AM
Tuning range US, Canadian model:
530 – 1,710 kHz
E model:
AM tuning interval:
9 kHz/10 kHz switchable
531 – 1,602 kHz
(at 9 kHz step)
530 – 1,710 kHz
(at 10 kHz step)
Antenna terminal External antenna connector
Intermediate frequency 10.7 MHz/450 kHz
Sensitivity 30 µV
– Continued on next page –
Dolby noise reduction extension manufactured under license
from Dolby Laboratories Licensing Corporation.
“DOLBY” and the double-D symbol ; are trademarks of Dolby
Laboratories Licensing Corporation.
MICROFILM
FM/AM MINIDISC PLAYER
1
Power amplifier section
Outputs Speaker outputs
Speaker impedance 4 – 8 ohms
Maximum power output 50 W × 4 (at 4 ohms)
General
Outputs Audio outputs
Tone controls Bass ±9 dB at 100 Hz
Power requirements 12 V DC car battery
Dimensions Approx. 178 × 50 × 183 mm
Mounting dimensions Approx. 182 × 53 × 162 mm
Mass Approx. 1.2 kg (2 lb. 10 oz.)
Supplied accessories Parts for installation and
Design and specifications are subject to change without
notice.
(sure seal connectors)
Power antenna relay
control lead
Power amplifier control
lead
Telephone ATT control
lead
Treble ±9 dB at 10 kHz
(negative ground)
(7 1/8 × 2 × 7 1/4 in.)
(w/h/d)
(7 1/4 × 2 1/8 × 6 1/2 in.)
(w/h/d)
connections (1 set)
Front panel case (1)
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down 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.
NOTES ON LASER DIODE EMISSION CHECK
Never look into the laser diode emission from right avove when
checking it for adustment. It is feared that you will lose your sight.
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
(KMS-241C/J1NP)
The laser diode in the optical pick-up block may suffer electrostatic
break-down easily. When handling it, perform soldering bridge to
the laser-tap on the flexible board. Also perform m easures against
electrostatic break-down sufficiently bef ore the operation. The flexible board is easily damaged and should be handled with care.
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.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C during 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.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation exposure.
SAFETY-RELATED COMPONENT WARNING!!
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
P ART NUMBERS APPEAR AS SHOWN IN THIS MANU AL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
laser-tap
OPTICAL PICK-UP FLEXIBLE BOARD
ATTENTION AU COMPOSANT AYANT RAPPORT
LES COMPOSANTS IDENTIFIÉS P AR UNE MARQUE 0 SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES
SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT .
NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES
SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL
OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
À LA SÉCURITÉ!!
2
TABLE OF CONTENTS
1. GENERAL
Location of Controls................................................................ 4
Getting Started......................................................................... 4
Setting the Clock ..................................................................... 4
MD Player CD/MD Unit (optional) ........................................ 5
Radio ....................................................................................... 6
Other Functions ....................................................................... 7
TV/Video (optional) ................................................................ 8
Additional Information ............................................................ 8
Connections ........................................................................... 10
2. DISASSEMBLY
2-1. Sub Panel (MD) Assy........................................................ 12
2-2. MD Mechanism Block ...................................................... 12
2-3. Main Board ....................................................................... 13
2-4. Heat Sink........................................................................... 13
2-5. Servo Board....................................................................... 14
2-6. MD Cover Assy ................................................................. 14
2-7. Float Block ........................................................................ 15
2-8. Lo Motor Assy (Loading) (M903) .................................... 15
2-9. Lever Assy (LE) ................................................................ 16
2-10. Holder Assy ....................................................................... 16
2-11. Chucking Arm Assy .......................................................... 17
2-12. Optical Pick-up (KMS-241C/J1RP) ................................. 17
2-13. SL Motor Assy (Sled) (M902)
/SP Motor Assy (Spindle) (M901) .................................... 18
3. DIAGRAMS
3-1. IC Pin Descriptions ........................................................... 19
3-2. Block Diagram –MD Section–.......................................... 27
3-3. Block Diagram –Tuner Section–....................................... 28
3-4. Block Diagram –Display Section–.................................... 29
3-5. Circuit Boards Location .................................................... 29
3-6. Printed Wiring Board –MD Mechanism Section– ............ 31
3-7. Schematic Diagram –MD Mechanism Section (1/2)– ...... 32
3-8. Schematic Diagram –MD Mechanism Section (2/2)– ...... 33
3-9. Schematic Diagram –Main Section (1/2)– ........................ 34
3-10. Schematic Diagram –Main Section (2/2)– ........................ 35
3-11. Printed Wiring Board –Main Section– .............................. 36
3-12. Printed Wiring Board –Relay Section– ............................. 37
3-13. Schematic Diagram –Relay Section–................................ 38
3-14. Schematic Diagram –Display Section–............................. 39
3-15. Printed Wiring Board –Display Section– .......................... 40
3-16. IC Block Diagrams............................................................ 41
4. EXPLODED VIEWS
4-1. Chassis Section ................................................................. 46
4-2. Front Panel Section ........................................................... 47
4-3. MD Mechanism Section (1) .............................................. 48
4-4. MD Mechanism Section (2) .............................................. 49
5. ELECTRICAL PARTS LIST ........................................ 50
3
SECTION 1
GENERAL
This section is extracted from
US, Canadian model’s instruction manual.
4
567891011
6
SECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
2-1. SUB PANEL (MD) ASSY
4 two claws
6 sub panel (MD) assy
2 PTT 2.6x6
2-2. MD MECHANISM BLOCK
5 MD mechanism block
2 PTT 2.6x6
3 claw
5 CNP800
1 PTT 2.6x6
6 PTT 2.6x6
7 bracket (MD)
12
3
1 PTT 2.6x
4 CN701
2-3. MAIN BOARD
8
7 heat sink
1 PTT 2.6x8
2 PTT 2.6x8
4 PTT 2.6x8
5 PTT 2.6x8
3 PTT 2.6x12
6 PTT 2.6x8
5 PTT 2.6x6
6 MAIN board
4 PTT 2.6x6
3 PTT 2.6x
2 PTT 2.6x8
1 PTT 2.6x8
2-4. HEAT SINK
13
2-5. SERVO BOARD
3
3 BVTT2x4
4 BVTT2x4
5 SERVO board
2-6. MD COVER ASSY
3 MD cover assy
2 CN102
1 CN103
1 B2 x
14
shaft (MD cover guide)
cassette holder
A
2 Pushing the cassette holder in the arrow A direction with a screwdriver,
disengage the shaft (MD cover guide) from the groove of MD cover ass’y.
Note : Be careful not to damage the optical pick-up
when pushing the cassette holder with a screwdriver.
2-7. FLOAT BLOCK
)
)
4 Pushing the arrow A part,
raise the float block upward at the front to unlock.
A
float block
lever (lock R)
lever (lock L)
3 two springs (float F)
2-8. LO MOTOR ASSY (LOADING) (M903)
2 spring (float B)
5
6 float block
1 spring (float B
4 Remove the bracket (LO)
in the direction of the arrow A.
1 Remove solder of the motor (M903).
A
5 LO motor assy (loading) (M903
2 spring (rack)
3 claw
15
2-9. LEVER ASSY (LE)
2 stopper washer
3 lever ass’y (LE)
4 roller (gear E)
1
2-10. HOLDER ASSY
4 spring (CHKG)
5 stop ring E (1.5)
6 lever (lock R)
0 holder assy
8 stop ring E (1.5)
7 stop ring E (1.5)
9
16
3 lever (lock L)
1 spring (CHKG)
2 stop ring E (1.5)
2-11. CHUCKING ARM ASSY
y
holder assy
2 chucking arm assy
1
2-12. OPTICAL PICK-UP (KMS-241C/J1RP)
7 optical pick-up
(KMS-241C/J1RP)
1 K2 x 3
2 shaft (OPTL)
4 B2 x 3
6 bearing (SL)
5 feed screw ass
3 K2 x 3
17
2-13. SL MOTOR ASSY (SLED) (M902)/SP MOTOR ASSY (SPINDLE) (M901)
4 P1.7 x 1.8
9 P1.7 x 1.8
5 bracket (SL)
6 SL motor ass’y
(sled) (M902)
0 bracket (SP)
2 PSW2 x 8
qa SP motor assy
(spindle) (M901)
7 B2 x 3
8 base (SL)
3 SENSOR board
1 Remove solders
of motors (M901, 902).
18
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