Sony CDX-CA680X User manual

1
Ver 1.0 2002. 11
Model Name Using Similar Mechanism CDX-L380X
CD Drive Mechanism Type MG-393XA-121//Q
Optical Pick-up Name KSS-720A
SERVICE MANUAL
AEP Model
UK Model
CDX-CA680X/L580X
FM/MW/LW COMPACT DISC PLAYER
CD player section
Signal-to-noise ratio 90 dB
Frequency response 10 – 20,000 Hz
Wow and flutter Below measurable limit
Tuner section
FM
Tuning range 87.5 – 108.0 MHz
Aerial terminal External aerial connector
Intermediate frequency 10.7 MHz/450 kHz
Usable sensitivity 9 dBf
Selectivity 75 dB at 400 kHz
Signal-to-noise ratio 67 dB (stereo),
69 dB (mono)
Harmonic distortion at 1 kHz
0.5% (stereo),
0.3% (mono)
Separation 35 dB at 1 kHz
Frequency response 30 – 15,000 Hz
MW/LW
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 µV
LW: 40 µV
Power amplifier section
Outputs Speaker outputs
(sure seal connectors)
Speaker impedance 4 – 8 ohms
Maximum power output 50 W ×4 (at 4 ohms)
SPECIFICATIONS
General
Outputs Audio outputs (front)
(CDX-CA680X only)
Audio outputs (rear)
Power aerial relay control
terminal
Power amplifier control
terminal
Inputs Telephone ATT control
terminal
Remote controller input
terminal
BUS control input terminal
(CDX-CA680X only)
BUS audio input terminal
(CDX-CA680X only)
Tone controls Low ±10 dB at 60 Hz
(XPLOD)
Mid ±10 dB at 1 kHz
(XPLOD)
High ±10 dB at 10 kHz
(XPLOD)
Power requirements 12V DC car battery
(negative ground)
Dimensions Approx. 178 ×50 ×180 mm
(w/h/d)
Mounting dimension Approx. 182 ×53 ×161 mm
(w/h/d)
Mass Approx. 1.2 kg
Supplied accessories Parts for installation and
connections
Front panel case (1)
Design and specifications are subject to change without
notice.
• The tuner and CD sections have no adjustments.
Sony Corporation
e Vehicle Company
Published by Sony Engineering Corporation
9-874-248-01
2002K0400-1
© 2002. 11
Photo: CDX-CA680X

2
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINE
WITH MARK 0ON 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 PUBLISHED BY SONY.
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
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.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission, ob-
serve from more than 30 cm away from the objective lens.
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.
SERVICE NOTES
This label is located on the bottom of the chassis.
This label is located on the drive unit’s internal chassis.
When replacing the chassis (T.U) of mechanism deck which have
the “CAUTION LABEL” attached, please be sure to put a new
LABEL (OP CAUTION) (3-223-913-01) to the chassis (T.U).
CDX-CA680X/L580X
TEST DISCS
This set can playback CD-R and CD-ROM discs. The following
test discs should be used to check the capability:
CD-R test disc TCD-R082LMT (Part No. J-2502-063-1)
CD-RW test disc TCD-W082L (Part No. J-2502-063-2)
Notes on CD-R/CD-RW discs
•You can play CD-Rs (recordable CDs)/CD-RWs (rewritable CDs)
designed for audio use on this unit.
Look for these marks to distinguish CD-Rs/CD-RWs for audio
use.
These marks denote that a disc is not for audio use.
•Some CD-Rs/CD-RWs (depending on the equipment used for
its recording or the condition of the disc) may not play on this
unit.
•You cannot play a CD-R/a CD-RW that is not finalized*.
*Aprocess necessary for a recorded CD-R/CD-RW disc to be
played on the audio CD player.

3
zUNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size.)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40°C higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350°C.
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!
•Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
•Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
EXTENSION CABLE AND SERVICE POSITION
Whenrepairingorservicingthisset,connectthejig(extensioncable)
as shown below.
•Connect the MAIN board (CNP301) and the SERVO board (CN1)
with the extension cable (Part No. J-2502-011-1).
CDX-CA680X/L580X
MAIN BOARD
CNP301
J-2502-011-1
SERVO BOARD
CN1

4
TABLE OF CONTENTS
1. GENERAL
Location of controls................................................................. 5
Connections ............................................................................. 6
2. DISASSEMBLY
2-1. Sub Panel Assy .................................................................... 7
2-2. CD Mechanism Block ......................................................... 8
2-3. Main Board ......................................................................... 8
2-4. Heat Sink ............................................................................. 9
2-5. Chassis (T.U) Assy .............................................................. 9
2-6. Disc in Board .................................................................... 10
2-7. Servo Board ....................................................................... 10
2-8. Shaft Roller Assy .............................................................. 11
2-9. Floating Block Assy .......................................................... 11
2-10. Optical Pick-up Block .......................................................12
3. DIAGRAMS
3-1. IC Pin Description............................................................. 13
3-2. Block Diagram –CD Section–........................................... 14
3-3. Block Diagram –Tuner Section–....................................... 15
3-4. Block Diagram –Display Section–.................................... 16
3-5. Circuit Boards Location .................................................... 17
3-6. Printed Wiring Boards –CD Mechanism Section–............ 18
3-7. Schematic Diagram –CD Mechanism Section– ................ 20
3-8. Printed Wiring Board –Main Section– .............................. 21
3-9. Schematic Diagram –Main Section (1/2)– ........................ 22
3-10. Schematic Diagram –Main Section (2/2)– ........................ 23
3-11. Printed Wiring Board –Relay Section– ............................. 24
3-12. Printed Wiring Board –Key Section– ................................ 25
3-13. Schematic Diagram –Key Section–................................... 26
3-14. IC Block Diagrams............................................................ 27
4. EXPLODED VIEWS
4-1. Chassis Section ................................................................. 29
4-2. Main Board Section .......................................................... 30
4-3. Front Panel Section ........................................................... 31
4-4. CD Mechanism Section (1) ............................................... 32
4-5. CD Mechanism Section (2) ............................................... 33
4-6. CD Mechanism Section (3) ............................................... 34
5. ELECTRICAL PARTS LIST ........................................ 35
CDX-CA680X/L580X

5
CDX-CA680X/L580X
SECTION 1
GENERAL This section is extracted
from instruction manual.

6
CDX-CA680X/L580X
Connections

7
CDX-CA680X/L580X
SECTION 2
DISASSEMBLY
Note : This set can be disassemble according to the following sequence.
Note : Follow the disassembly procedure in the numerical order given.
2-1. SUB PANEL ASSY
2-1. SUB PANEL ASSY
(Page 7)
2-2. CD MECHANISM BLOCK
(Page 8)
2-5. CHASSIS (T.U) ASSY
(Page 9)
2-6. DISC IN BOARD
(Page 10)
2-8. SHAFT ROLLER ASSY
(Page 11)
2-9. FLOATING BLOCK ASSY
(Page 11)
2-10. OPTICAL PICK-UP BLOCK
(Page 12)
SET
2-7. SERVO BOARD
(Page 10)
2-3. MAIN BOARD
(Page 8)
2-4. HEAT SINK
(Page 9)
4 CN702
5 sub panel assy
3 claws
2 claws
1 PTT 2.6x6

8
CDX-CA680X/L580X
2-2. CD MECHANISM BLOCK
2-3. MAIN BOARD
1 PTT 2.6x6
6 PTT 2.6x
4
7 bracket (CD)
2 PTT 2.6x6
5 CD mechanism block
4 CNP301
3
1 PTT 2.6x
6
3 PTT 2.6x6
(ground point)
4 PTT 2.6x6
(ground point)
5 MAIN board
2 PTT 2.6x6

9
CDX-CA680X/L580X
2-4. HEAT SINK
2-5. CHASSIS (T.U) ASSY
3 PTT 2.6x8
5 PTT 2.6x
8
7 heat sink
6
4
PTT 2.6x12
1 PTT 2.6x8
2 cord (RCA)
4 chassis (T.U) assy
3 P 2x3
2 P 2x3
1 Unsolder the
lead wires.
black
red
white

10
CDX-CA680X/L580X
2-6. DISC IN BOARD
2-7. SERVO BOARD
3 claws
2 DISC IN board
4 guide (disc)
1 PS 2x3
1 CN3
2 Removal the solders.
3 P 2x3
6 PS 2x4
5 PS 2x4
4 loading motor assy
7 SERVO board
optical pick-up block
8 PICK-UP FLEXIBLE board

11
CDX-CA680X/L580X
2-9. FLOATING BLOCK ASSY
Fig. 1
1 tension spring (RA3)
2 arm (roller T)
3 retaining ring (roller)
4 bearing (roller)
5 shaft roller assy
retaining ring (roller) arm arm
washer (RA) washer (RA)
bearing (roller) bearing (roller)
1 tension spring (KF1)
2 tension spring (KR1)
8 compression spring (FL)
7 floating block assy
9 compression spring (FL)
5 Fit lever (D) in the
direction of the arrow.
3 damper (T)
4 damper (T)
6 Turn loading ring in the
direction of the arrow.
2-8. SHAFT ROLLER ASSY
• When installing, take note of the positions
arm (roller) and washers. (Fig. 1)

12
CDX-CA680X/L580X
2-10. OPTICAL PICK-UP BLOCK
1 P 2x3
4 P 2x3
5 leaf spring (feed)
6 shaft (feed) assy
2 sled motor assy
3 optical pick-up block

13
CDX-CA680X/L580X
SECTION 3
DIAGRAMS
3-1. IC PIN DESCRIPTION
• IC501 MN101C49KSE (SYSTEM CONTROL)
Pin No. Pin Name I/O Pin Description
1VREF– — A/D converter power supply (–) pin
2VSM I S-meter voltage detection input
3QUALITY I Noise detection input
4, 5 KEYIN1, 0 I Key input 1, 0
6RCIN0 I Rotary commander key input
7 – 9 NIL I Not used. (Fixed at L in this set)
10 VREF+ — A/D converter power supply (+) pin (+5 V)
11 VDD — Power supply pin (+5V)
12 OSCOUT O Main clock output (18.432 MHz)
13 OSCIN I Main clock input (18.432 MHz)
14 VSS — Ground
15 XIN I Sub clock input (32.768 kHz)
16 XOUT O Sub clock output (32.768 kHz)
17 MMOD I Not used. (Fixed at L in this set)
18 LCDSO O Serial data output for LCD driver IC.
19 LCDCE O Chip enable output for LCD driver IC.
20 LCDCKO O Serial clock output for LCD driver IC.
21 CD_TSO O Serial data output for CD servo IC.
22 CD_TSI I Serial data input from CD servo IC.
23 CD_TCKO O Serial clock output for CD servo IC.
24 SYSRST O System reset output (Used for CDX-CA680X only)
25 BUSON O BUS ON output (Used for CDX-CA680X only)
26 KEYACK I Key acknowledge detection input
27 DAVN I RDS data block synchronization detection input
28 BUIN I Backup power supply input
29 SIRCS I SIRCS input
30 TU_ATTIN I Tuner attenuator control input
31 CD_PACK I CD text pack synchronization signal input from CD servo IC.
32 NC (VCC) — Power supply pin (+5V)
33 RESET I Microcomputer reset input
34 NOSE-SW I Front panel attachment detection input
35 BEEP O Beep output
36 NC O Not used. (Open)
37 TESTIN I Test mode detection input
38 ACCIN I Accessory power supply detection input
39 NC O Not used. (Open)
40 TELATT I Telephone attenuator detection input
41 NC (VCC) I Not used. (Fixed at H in this set)
42 UNISO O SONY-BUS data output (Used for CDX-CA680X only)
43 UNISI I SONY-BUS data input (Used for CDX-CA680X only)
44 UNICKO O SONY-BUS clock output (Used for CDX-CA680X only)
45 I2C_SIO I/O I2C BUS serial data input/output
46 NC O Not used. (Open)
47 I2C_CKO O I2C BUS serial clock output
48, 49 NC O Not used. (Open)
50 CD_SELFSW I CD mechanism deck Self switch detection input
51 TSTB O CD text parameter strobe output for CD servo IC.
52 RFOK I RFOK signal input from CD servo IC.
53 CD_RST O Reset signal output for CD servo IC.
54 A0 O Command/parameter discrimination signal output for CD servo IC.
55 STB O Data strobe signal output for CD servo IC.

14
CDX-CA680X/L580X
Pin No. Pin Name I/O Pin Description
56 X_EN O Not used. (Open)
57 LIMIT I CD mechanism deck Limit switch detection input
58 NCO O Not used. (Open)
59 D_SW I CD mechanism deck Down switch detection input
60 INSW I CD mechanism deck Disc in switch detection input
61 NC O Not used. (Open)
62 CD_LM_LO O CD mechanism deck loading motor control output (Loading direction)
63 CD_LM_EJ O CD mechanism deck loading motor control output (Eject direction)
64 – 66 NC O Not used. (Open)
67 ATT O System attenuator control output
68 DIAG I Mode input from power amp IC.
69 STB O Standby control output for power amp IC.
70 VOLATT O Electronic volume attenuator control output
71 – 74 NC O Not used. (Open)
75 DOOR-IND O Sub panel power supply control output
76 – 84 NC O Not used. (Open)
85 NS_MASK O Noise mask output
86 E2P_CKO O EEPROM serial clock output
87 E2P_SIO I/O EEPROM serial data input/output
88 TU-ATT O Tuner attenuator control output
89, 90 NC O Not used. (Open)
91 AD_ON O Key power supply control output
92, 93 NC O Not used. (Open)
94 PANEL_SW I Not used. (Fixed at L in this set)
95 DAVSS — D/A converter power supply (–) pin
96 COLSW I Key illumination 1 color/2 color select initial setting input (Fixed at L in this set)
97 FLASH_W I Flash microcomputer write detection input
98 RCIN1 I Rotary commander SHIFT key input
99 NC O Not used. (Open)
100 DAVDD — D/A converter power supply (+) pin (+5 V)

15 15
CDX-CA680X/L580X
84
85
82
83
16
12
D/A
CONV
TRACKING
ERROR
FORCUS
ERROR
1
OSC
EFM
DEMOD
SERVO
CTL
RF
EQ
52
56
DSUB CODE
PROCESS
8
7
6
5
4
3
2
60
50
57
59
31
51
21
22
23
55
54
53
52
I/F
87
86
97
98
LD
DRIVE
Q1
FOCUS
COIL
DRIVE
TRACKING
COIL
DRIVE
SLED
MOTOR
DRIVE
SPINDLE
MOTOR
DRIVE
LOADING
MOTOR
DRIVE
6
5
23
2
16
15
17
18
13
14
11
12
9
10
26
62 63 64 65
63
62
33
M902
(SLED)
M901
(SPINDLE)
M903
(LOADING)
SW3
(LIMIT)
SW2
(SELF)
SW5
(DOWN)
SW1
(DISC IN)
X1
16.9344MHz
OPTICAL PICK-UP
(KSS-720A)
I-V
CONV.
CDL
CDR
CD PACK
TSTB
STB
AO
CD_TSO
CD_TSI
CD_TCKO
CD_RST
RFOK
INSW
LIMIT
CD_SELFSW
D_SW
CD_L_ LO
CD_LM_EJ
TUNER
SECTION
A
23 24
M
M
M
IC602
B.UP+B
LOUT
ROUT
PACK
TSTB
SI
RFOK
SO
SCK
STB
AO
RST
RESET
A
C
B
D
E
F
PD
LD
A
C
B
D
E
F
PD
LD
LD AMP
FOCUS
COIL
TRACKING
COIL
FD
FSC+
FSC-
TRK+
TRK-
SL-
SL+
SP-
SP+
LD-
LD+
TD
SD
MD
LOAD
EJECT
SYSTEM CONTROL
IC501 (1/3)
RF AMP,DIGITAL SERVO,
DIGITAL SIGNAL PROCESSOR
IC1
FOCUS/TRACKING COIL DRIVE,
SLED/SPINDLE/LOADING MOTOR DRIVE
IC2
FD TD SD MD
Signal path
: CD
A5V
AU5V
D5V
DR6V
SERVO 5V
MECH6V
+-
+-
+-
1
S702
RESET
RESET 3
3-2. BLOCK DIAGRAM — CD SECTION —
(Page 16)

1616
CDX-CA680X/L580X
J1
(ANTENNA) 1ANT
CDL
CDR R-CH
3
R-CH
9
RDS 16 9
10
8
MPX
VDD
RDS DEMODULATOR
IC51
SDA
SCL
DAVN
4OSCO
5OSCI
AUDIO 8.3V
TUNER UNIT
TU1
6
S-METER
14
TU-SDA
SYSTEM CONTROL
IC501 (2/3)
67
ACCIN 38
TELATT 40
STB 69
BEEP 35
AUDIO OUT FRONT
CD
SECTION
A
3
-1
11
CN601
1
9
FL+
FL-
2
10
RL+
RL-
4
12
13
7
FR+
FR-
15
RR+
RR-
TEST
ACC
ATT
16 +B(BATT)
8GND
R-CH
F901
10A
TU-ATTIN
QUALITY
NS-MASK
BATT
BATT
17
19
18
BATT
L
CA680X
R
-2
R-CH
BUS INTERFACE
IC580
13
12
8
9
11
13
3
E2P_CKO
86
VSM
13
TU-SCL
ATT
BATT
68
TESTIN
DIAG
37
2
VOLATT
70
SOUND CONTROL
ELECTRONIC VOLUME
IC401
VCC 22
BUS-LCH
5
CD-LCH
9
TV-LCH
7
SDA
SCL
MUTE
CONT.
EVR
25
I2C_SIO
I2C_CKO
45
47
17
E2P-SDA
16
E2P-SCL
5
QUALITY
8
MUTE-CONDITION
7
TU-MUTE
11
TU-VDD
10
VCC(8.3V)
27
87 E2P_SIO
DAVN
85
30
TU-ATT
88
6
DATA I/O
4
CLK
2
CLK
3
CLK
CN580
BUS
CONTROL IN
R-CH
1
25
29
BUSON 6
5
4
3
8
7
2
1
BUS AUDIO IN
-3
J330
L
R
-4
R-CH
AUDIO OUT REAR
-1
L
R
-2
R-CH
BUSON
DATA OUT
CLK IN
B/U-C
DATA IN
B/U-C
5ANP-R
27
35
37
34
33
31
30
6ANT-R
BEEP
STB
4SCL
2SDA
CONT.
9
7
6
20
POWER AMP
IC750 (1/2)
MULTIPLE VOLTAGE
REGULATOR
IC750 (2/2)
AUDIO 8.3V
VP2
VP1
• Signal path
:FM
:CD
• R-ch is omitted due to same as L-ch.
12
SYSRST 24
BUSON 25
UNISI 43
UNICKO 44
UNISO 42
BU IN 28
4
L-CH
OUT
-FL 19
OUT
-RL 18
+5V REG.
Q1
BACK-UP CHECK/
LOW VOLTAGE
CHECK
Q581,582
OVER VOLTAGE
DET.
Q580,D580,581
LINE MUTE
CONTROL
Q478,479
TEL
ATT
Q651
I2C
BUS
ACC
DETECT
Q631
MUTE
Q441
MUTE
Q461
11
MUTE
TONE
INPUT SELECTOR
EFFECT
Q22
X51
4.332MHz
5
3
DIAG
AMP-REM
ANT-REM
B.UP+B
PANEL+B
MECH 6V
SERVO 5V
AUDIO 8.3V
B.UP+B
PANEL+B
MECH 6V
SERVO 5V
AUDIO 8.3V
VP
D759
D760
CA680X
CA680X
L580X
MUTE
16
22
I2C
BUS
27
26
3-3. BLOCK DIAGRAM — TUNER SECTION —
(Page 15)

17 17
CDX-CA680X/L580X
3-4. BLOCK DIAGRAM — DISPLAY SECTION — 3-5. CIRCUIT BOARDS LOCATION
MAIN board
SERVO board
LIMIT board
SUB (CD) board
tuner uni
t
(TU1)
SUB board
DISC IN board
KEY board
IC1 uj (RFO)
• Waveforms
— Servo Board —
(MODE: CD PLAY)
1
2
3
IC1 ts (PACK)
0V
1.8Vp-p
16.9344MHz
IC1 wd (XTAL)
0V
4
Approx. 620mVp-p
IC1 oa (FEO)
5
Approx. 200mVp-p
IC1 od (TEO)
2.4Vp-p
4.8Vp-p
3.4msec
32.768kHz
IC501 qh (XOUT)
— Main Board —
1
2
3
18.432MHz
IC501 qs (OSCOUT)
5Vp-p
4.332MHz
IC51 4(OSCO)
4.5Vp-p
2.3Vp-p
LSW901,904-910,
912-922
S902,903,911
KEY
ACTIVE
Q664
LED
DRIVER
Q701
REMOTE
RECEIVE
J561
(REMOTE IN) IC971
X502
32.768kHz
15
16
12
13
518
20
19
4
26
91
98
6
29
SYSTEM CONTROL
IC501 (3/3)
LCD DRIVER
IC901
KEYIN0 DATA
CLK
CE
LCDSO
LCDCKO
LCDCE
KEYIN1
KEY ACK
AD_ON
RCIN1
RCIN0
SIRCS
75 DOOR-IND
34 NOSE-SW
XIN
XOUT
OSCOUT
OSCIN
X501
18.432MHz
77
78
76
COM1
COM4
LCD
LCD901
PANEL+B
PANEL+B
LSW901,904-910,
912-922
LED903,911,933,934,
951-954
LED933,934
(LCD BACK LIGHT)
D502
S801
D501
65
|
68
|
SEG1
SEG64
1
|
64
|
DI
CL
CE
KEY
ILLUMINATION
()
Z
S501
(NOSE DET)
LED801
(DOOR INDICATOR)
LED802
Z
KEY MATRIX
2

1818
CDX-CA680X/L580X
1
A
B
C
D
E
F
G
H
I
234567891011121314
SW5
CN2
3-6. PRINTED WIRING BOARDS — CD MECHANISM SECTION — • Refer to page 17 for Circuit Boards Location. : Uses unleaded solder.
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
for schematic diagram:
•All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
•All resistors are in Ωand 1/4W or less unless otherwise
specified.
•%: indicates tolerance.
•f: internal component.
•C: panel designation.
•A: B+ Line.
•Powervoltage is dc14.4V and fedwith regulated dcpower
supply from ACC and BATT cords.
•Voltagesare takenwith a VOM(Input impedance10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
•Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
•Circled numbers refer to waveforms.
•Signal path.
F: FM
f: MW
J: CD
for printed wiring boards:
•X: parts extracted from the component side.
•Y: parts extracted from the conductor side.
•a: Through hole.
•: Pattern from the side which enables seeing.
(The other layer’s patterns are not indicated.)
Note: The components identified by mark 0or dotted line
with mark 0are critical for safety.
Replace only with part number specified.
Caution:
Pattern face side: Parts onthepattern faceside seenfromthe
(Side B) pattern face are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A) parts face are indicated.

19 19
CDX-CA680X/L580X
1
A
B
C
D
E
F
G
H
I
234567891011121314
TP8
C4
C26
TP1
TP2 TP3
TP4
TP5
TP87
TP86
M903
TP57
TP77
TP11
TP79
TP83
TP70
TP10
TP9
TP27
TP12
TP78
TP31
TP81
TP84
TP54
TP25
TP24
TP37
TP39
TP36
TP38
TP40
TP45
TP22
TP88
TP41
TP46
TP30 TP21
M902 M901
CN1
TP17
TP20
TP42
C44
TP19
TP28
TP90
C41
TP29
TP15
TP33
TP73
TP14
TP18
TP48
TP71
TP51
TP49
TP52
TP55
TP75
TP53
TP56
TP43
TP58
TP61
TP74
TP60
TP68
TP80
TP7
TP62
TP91
TP63
TP66
TP64
TP69
TP72
TP50
TP26
TP32
TP59
TP76
BP4
BP3
BP1
BP2
R8
R9
R5
R7
R12
R14
R15
R10
R17
R18
R19
R20 R22
TP92
FB5
C3
C5
C6
C8
C9 C10
C11
C13
C14
C16
C18
C19
C24
C25
C29
C34
C36
C38
C35
C22
C30
TP6
C23
C1
C27
R21
TP47
C15 C20
TP35
TP23
R6
C17
TP82
TP44
Q1
R26
TP34
TP89
R3
TP16
TP85
R31
CN1
IC1
IC2
C43
R30
R29
CN3
X1
C70
C71
SW1
SW3
SW2
(Page 21)
: Uses unleaded solder.

2020
CDX-CA680X/L580X
IC B/D
IC B/D
TP77
TP78
R29
R30
C43
TP79
TP80
TP81
TP82
TP83
TP84
CN2
CN3
SW3
M902
M901
TP1
TP4
SW2
SW1
TP5
TP2
TP3
M903
TP87
TP86
TP9 TP8
R3 R26
C4
TP10
C13
R5
C11
C10
C8
TP7
TP92
R6
TP15
TP14
TP17
TP20
TP16
TP19
TP21
TP18
BP4
BP3
R7
C17
TP11
TP12 C9
C14
TP89
C19
C20 C23
R9
R8
TP22
TP23
TP24
TP25
TP88
C26
TP31
BP1
BP2
TP33
TP32
R14
R15
TP30
R12
R10
TP91
TP90
TP29
TP28
TP26
TP27
R21
R22
R31
C44
TP6
TP34
TP35
TP36
TP46
TP37
TP38
TP39
TP40
TP41
TP42
TP43
TP44
TP45
CN1
R18
R19
R20
R17
TP66
TP62
TP47
TP63
TP48
TP49
TP64
TP50
TP51
TP52
TP68
TP53
TP69
TP54
TP70
TP55
TP71
TP56
TP72
TP57
TP73
TP58
TP74
TP59
TP75
TP60
TP76
TP61
IC1
X1
C1 C5 C3 C6
TP85
C15
C16C70
C24
C35
C38
C36
FB5
C25
C34
C71
C29
C27
C41
C22
C30
C18
Q1
SW5
IC2
CN1
3-7. SCHEMATIC DIAGRAM — CD MECHANISM SECTION — • Refer to page 17 for Waveforms and page 18 for Common Note on Schematic Diagram.
• Refer to page 27 for IC Block Diagrams.
Note:
•Voltage is dc with respect to
ground under no-signal conditions.
no mark : CD PLAY
(Page 23)