DOWNLOAD Sony MDX-CA680 / MDX-CA680X Service Manual ↓ Size: 4.46 MB | Pages: 62 in PDF or view online for FREE

Model
MDX-CA680 MDX-CA680X
Pages
62
Size
4.46 MB
Type
PDF
Document
Service Manual
Brand
Device
Car Audio
File
mdx-ca680-mdx-ca680x.pdf
Date

Sony MDX-CA680 / MDX-CA680X Service Manual ▷ View online

SERVICE MANUAL
FM/AM (MW/LW) MINIDISC PLAYER
US Model
MDX-CA680X
AEP Model
UK Model
MDX-CA680/CA680X
SPECIFICATIONS
MDX-CA680/CA680X
Photo: MDX-CA680X (US model)
Ver 1.1  2001.05
9-870-242-12
Sony Corporation
2001E0500-1
e Vehicle Company
C
 2001.5
Shinagawa Tec Service Manual Production Group
U.S. and foreign patents licensed from Dolby laboratories
Licensing Corporation.
AUDIO POWER SPECIFICATIONS (US model)
POWER OUTPUT AND TOTAL HARMONIC DISTORTION 
23 watts per channel minimum continuous average power into 4 ohms, 
4 channels driven from 20 Hz to 20 kHz with no more than 5% total 
harmonic distortion.
MD Player section
Signal-to-noise ratio
90 dB
Frequency response
10 – 20,000 Hz
Wow and flutter
Below measurable limit
Laser Diode Properties (US model)
Material
GaAlAs
Wavelength
780 nm
Emission Duration
Continuous
Laser output power
Less than 44.6 
µ
W*
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
T
US model:
AEP, UK models:
uning range
87.5 – 107.9 MHz
87.5 – 108.0 MHz
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), 
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 (US model)
Tuning range
530 – 1,710 kHz
Antenna terminal
External antenna connector
Intermediate frequency
10.7 MHz/450 kHz
Sensitivity
30 
µ
V
Power amplifier section
Outputs
Speaker outputs 
(sure seal connectors)
Speaker impedance
4 – 8 ohms
Maximum power output 
50 W 
×
 4 (at 4 ohms)
General
Outputs
Audio outputs (front/rear)
Power antenna relay control 
lead
Power amplifier control lead
Inputs
Telephone ATT control lead
BUS control input 
connector 
BUS audio input connector 
Remote controller input 
connector 
Antenna input connector
T
US model:
one controls
Bass 
±
10 dB at 100 Hz
Treble 
±
10 dB at 15 kHz
AEP, UK models:
Bass 
±
9 dB at 100 Hz
Treble 
±
9 dB at 10 kHz
Power requirements
12 V DC car battery 
(negative ground)
Dimensions
Approx. 178 
×
 50 
×
 177 mm 
(7 
1
/
8
 
×
 2 
×
 7 in.)
(w/h/d)
Mounting dimensions
Approx. 182 
×
 53 
×
 161 mm 
(7 
1
/
4
 
×
 2 
1
/
8
 
×
 6 
3
/
8
 in.)
(w/h/d)
Mass
Approx. 1.2 kg 
(2 lb 10 oz)
Supplied accessories
Parts for installation and 
connections (1 set)
Front panel case (1)
Note
This unit cannot be connected to a digital preamplifier 
or an equalizer.
Design and specifications are subject to change 
without notice.
MW/LW (AEP, UK models)
Tuning range
MW: 531 – 1,602 kHz
LW: 153 – 279 kHz
Aerial terminal
External aerial connector
Intermediate frequency
10.7 MHz/450 kHz
Sensitivity
MW: 30 
µ
V
LW: 40 
µ
V
Model Name Using Similar Mechanism
NEW
Base Mechanism Type
MG-164MA-138
Optical Pick-up Name
KMS-241C
2
MDX-CA680/CA680X
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 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  HANDLING  THE  OPTICAL  PICK-UP
BLOCK  OR  BASE  UNIT
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  PART  NUMBERS  APPEAR  AS
SHOWN  IN  THIS  MANUAL  OR  IN  SUPPLEMENTS  PUB-
LISHED  BY  SONY.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
The laser diode in the optical pick-up block may suffer electro-
static 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).
 The laser diode in the optical pick-up block may suffer electro-
static break-down easily. When handling it, perform soldering
bridge to the laser-tap on the flexible board. Also perform mea-
sures against electrostatic break-down sufficiently before the op-
eration. The flexible board is easily damaged and should be
handled with care.
laser-tap
OPTICAL PICK-UP FLEXIBLE BOARD
1.
GENERAL
Location of Controls .......................................................
3
Setting the Clock .............................................................
4
2.
DISASSEMBLY
2-1. Disassembly Flow ........................................................... 10
2-2. Sub Panel Assy ................................................................ 10
2-3. Mechanism Deck (MG-164MA-138) ............................. 11
2-4. MAIN Board ................................................................... 11
2-5. Heat Sink ......................................................................... 12
2-6. SERVO Board ................................................................. 12
2-7. MD Cover Assy ............................................................... 13
2-8. Float Block ...................................................................... 13
2-9. Lo Motor Assy (Loading) (M903) .................................. 14
2-10. Lever (LE23) Assy .......................................................... 14
2-11. Holder Assy ..................................................................... 15
2-12. Chucking Arm Assy ........................................................ 15
2-13. Optical Pick-up (KMS-241C) ......................................... 16
2-14. SL Motor Assy (Sled) (M902),
SP Motor Assy (Spindle) (M901) ................................... 16
3.
ELECTRICAL  ADJUSTMENTS
Test Mode ........................................................................ 17
MD Section ..................................................................... 17
Tuner Section .................................................................. 17
4.
DIAGRAMS
................................................................. 18
4-1. Block Diagram – SERVO Section – ............................... 23
4-2. Block Diagram – TUNER Section – .............................. 24
4-3. Block Diagram – MAIN Section – ................................. 25
4-4. Block Diagram – BUS CONTROL/
POWER SUPPLY Section – ........................................... 26
4-5. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 27
4-6. Printed Wiring Boards – SERVO Section – ................... 29
4-7. Schematic Diagram – SERVO Section (1/2) – ............... 30
4-8. Schematic Diagram – SERVO Section (2/2) – ............... 31
4-9. Printed Wiring Board – MAIN Board – ......................... 32
4-10. Schematic Diagram – MAIN Board (1/3) – ................... 33
4-11. Schematic Diagram – MAIN Board (2/3) – ................... 34
4-12. Schematic Diagram – MAIN Board (3/3) – ................... 35
4-13. Printed Wiring Board – SUB Board – ............................ 36
4-14. Schematic Diagram – SUB Board – ............................... 37
4-15. Printed Wiring Board – KEY Board – ............................ 38
4-16. Schematic Diagram – KEY Board – .............................. 39
4-17. IC Pin Function Description ........................................... 41
5.
EXPLODED  VIEWS
5-1. General Section ............................................................... 49
5-2. Front Panel Section ......................................................... 50
5-3. Mechanism Deck Section-1 (MG-164MA-138) ............ 51
5-4. Mechanism Deck Section-2 (MG-164MA-138) ............ 52
6.
ELECTRICAL  PARTS  LIST
............................... 53
TABLE  OF  CONTENTS
3
MDX-CA680/CA680X
SECTION  1
GENERAL
This section is extracted from
instruction manual.
Location of controls
Refer to the pages listed for details.
: During Playback
: During radio reception  
: During menu mode
a
Volume control dial  16
b
MBP button 
 
22
c Z
 (eject) button
 (located on the front side 
of the unit, behind the front panel)
  9
d
SOURCE (Power on/Radio/CD/MD) 
button  
8, 9, 11, 13, 14, 16
e
Display window
f
Receptor for the card remote 
commander
g
MENU button  8, 10, 11, 12, 13, 17, 18, 
21
h
DISPLAY/PTY
*1
 (display mode change/
programme type) button  9, 11, 15, 18
i
SCROLL button  9
j
OPEN button  7, 9
k
LIST button
11
14
l
D-BASS button  22
m
RESET button
 (located on the front side of 
the unit, behind the front panel)
  7
n
Number buttons
(3)
 REP  10
(6)
 SHUF  10
13, 14, 16, 17
o
MODE button
9, 11
13, 14, 16
p
SOUND button  20, 22
q
AF button
*1
 
 
15, 17
r
TA button 
*1
  16, 17
s
OFF (Stop/Power off) button
*
2
   7, 9
t
ENTER button
11
14, 18
8, 10, 11, 12, 13, 17, 18, 21
*2
W
*1
AEP, UK models only
arning when installing in a car without 
an ACC (accessory) position on the 
ignition switch
After turning off the ignition, be sure to press 
(OFF)
 on the unit for 2 seconds to turn off the 
clock display.
Otherwise, the clock display does not turn off 
and this causes battery drain.
CD/MD
RADIO
MENU
(AEP, UK models)
1
2
3
4
5
6
AF
TA
OFF
D
S
MENU
LIST
SOUND
ENTER
MBP
SOURCE
REP
SHUF
MODE
D–BASS
DIS
C/PRESET
SEEK
SEEK
DISPLAY
OPEN
PTY
SCROLL
CD/MD
RADIO
CD/MD
RADIO
CD/MD
RADIO
CD/MD
RADIO
MENU
4
MDX-CA680/CA680X
u
DISC/PRESET buttons (+/–)
9, 11
13, 14, 18
8, 10, 11, 12, 13, 17, 18, 21
v
SEEK buttons (–/+)
9
13, 14, 16
8, 10, 12, 18, 20, 21
AF
TA
OFF
D
S
MENU
LIST
SOUND
ENTER
DIS
C/PRESET
SEEK
SEEK
DISPLAY
OPEN
SCROLL
PTY
(SEEK)
(–):to select 
leftwards/
.
(SEEK)
(+):to select 
rightwards/
>
(DISC/PRESET)
(+): to select upwards
In menu mode, the currently selectable button (s) 
of these four are indicated with a “ 
M” in the display.
(DISC/PRESET)
(–): to select downwards
CD/MD
RADIO
MENU
CD/MD
RADIO
MENU
Setting the clock
The clock uses a 12-hour (US model) or  24-hour 
(AEP, UK models) digital indication.
Example: To set the clock to 10:08
1
Press 
(MENU)
, then press either side 
of 
(DISC/PRESET)
 repeatedly until 
“CLOCK” appears.
1
Press 
(ENTER)
.
The hour indication flashes.
2
Press either side of 
(DISC/PRESET)
 
to set the hour.
3
Press the (+) side of 
(SEEK)
.
The minute indication flashes.
4
Press either side of 
(DISC/PRESET)
 
to set the minute.
2
Press 
(ENTER)
.
The clock starts. After the clock setting is 
completed, the display returns to normal play 
mode.
Tips
• You can set the clock automatically with the RDS 
feature (page 18).
• When D.INFO mode is set to ON, the time is always 
displayed (page 21).
Page of 62
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Sony MDX-CA680 / MDX-CA680X Service Manual ▷ Download

  • DOWNLOAD Sony MDX-CA680 / MDX-CA680X Service Manual ↓ Size: 4.46 MB | Pages: 62 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sony MDX-CA680 / MDX-CA680X in PDF for free, which will help you to disassemble, recover, fix and repair Sony MDX-CA680 / MDX-CA680X Car Audio. Information contained in Sony MDX-CA680 / MDX-CA680X Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.