Sony CDX-805 Service manual
SERVICE MANUAL
CDX-805
US Model
Canadian Model
Ver 1.1 2001.08
System Compact disc digital audio system
Laser diode properties
Frequency respones
Wow and flutter Below the measurable limit
Signal-to-noise ratio
Outputs Optical digital output
Current drain 800 mA (during CD playback)
Photo: Except US model
SPECIFICATIONS
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.
5–20,000 Hz
99 dB
BUS control output (8 PIN)
Analog audio output (RCA PIN)
800 mA (during loading or
ejecting a disc)
Model Name Using Similar Mechanism NEW
CD Drive Mechanism Type
Optical Pick-up Name
Operating temperature
–10°C to +55°C (14°F to 131°F)
Dimensions Approx. 262 × 90 × 181.5 mm
(103/8 × 35/8 × 71/4 in.) (w/h/d)
not incl. projecting parts and
controls
Mass Approx. 2.1 kg (4 lb. 10 oz.)
Power requirement
12V DC car battery (negative
ground)
Supplied accessories
Disc magazine (1)
Parts for installation and
connections (1 set)
Design and specifications subject to change without
notice.
AEP Model
UK Model
E Model
MG-250A-137
KSS-521A/J2RP
9-925-522-12 Sony Corporation
2001H0500-1 e Vehicle Company
C 2001.8 Shinagawa Tec Service Manual Production Group
– Continued on next page –
COMPACT DISC CHANGER
SERVICING NOTES
TABLE OF CONTENTS
1. GENERAL
Installation ......................................................................... 4
Connections ....................................................................... 5
2. DISASSEMBLY............................................................ 7
3. ELECTRICAL ADJUSTMENTS ........................... 13
4. DIAGRAMS
4-1. Block Diagram................................................................... 15
4-2. Printed Wiring Board – RF Section –................................ 17
4-3. Schematic Diagram – RF Section –................................... 19
4-4. Schematic Diagram – MAIN Section –............................. 23
4-5. Printed Wiring Board – MAIN Section – .......................... 27
4-6. IC Pin Function Description.............................................. 35
5. EXPLODED VIEWS ................................................... 38
6. ELECTRICAL PARTS LIST .................................... 43
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.
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 radiation exposure.
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 MANU AL OR IN SUPPLEMENTS PUBLISHED BY SONY.
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.
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.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS P AR UNE MARQUE !
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.
– 2 –
DISC MAGAZINE GETTING OUT PROCEDURE ON THE
POWER SUPPLY IS OFF
Remove the CASE (LOWER) assembly beforehand
1) Press the lever (stop) assy to arrow direction.
2) Removal the magazine assy.
Note: T ake 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.
Lever (stop) ass’y
Magazine ass’y
– 3 –
This section is extracted
from instruction manual.
SECTION 1
GENERAL
– 4 –
– 5 –
– 6 –
SECTION 2
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
COVER (UPPER), FRONT PANEL ASS’Y
1
screw
(PTT2.6 × 6)
3
lever (FL)
1
screw
(PTT2.6
×
6)
1
screw
(PTT2.6
×
6)
2
case (upper)
3
1
screw
(PTT2.6
lever (FL)
×
6)
MECHANISM DECK
1
two dampers (250)
4
front panel ass’y
2
spring (FL)
1
screw
(PTT2.6 × 6)
4
mechanism deck
2
spring (FL)
3
jack flexible board
(CN901)
– 7 –
1
two dampers (250)
JACK BOARD, DIGITAL OUT BOARD
Remove the jack board
of the arrow.
2
screw
(BVTT2.6
×
5)
3
jack board
4
screw
(BVTT2 × 6)
1
connector
(CN902)
1
5
digital out board
connector
(CN801)
MAIN BOARD
5
two screws
(P 2 × 2.5)
1
main flexible board
(CNJ12)
6
three screws
(ground)
4
heat sink
7
main board
2
connector
(CNP301)
3
screw
(B2 × 3)
– 8 –
ELEVATOR MOTOR ASS’Y (M104)
1
screw
(P2
×
2.2)
2
bracket (ELV motor)
3
elevator motor ass’y
ESCUTCHEON
2
Remove the claw
of the arrow A.
4
Remove the ditch
of the arrow B.
5
Remove the escutcheon
of the arrow C.
B
A
4
C
ditch
1
3
screw
(M2 × 3)
two claws
– 9 –
CASE (UPPER) ASS’Y
1
three screws
(B2
×
3)
4
Remove the case
(upper) ass’y of the
arrow B.
1
screw
(B2 × 3)
2
B
A
3
Remove the edge
of the arrow
A
.
1
two screws
(B 2 × 3)
CHASSIS ASS’Y
3
1
polyethylene washer
chassis ass‘y
2
2
1
two polyethylene washers
– 10 –
RF BOARD
5
connector
(CNP52)
2
two screws
(P2 × 2.5)
1
OP flexible board
(CNJ11)
5
3
screw
(P2
×
3)
4
RF board
two connectors
(CNP11, 503)
SLED MOTOR ASS’Y (M102), OPTICAL PICK-UP (KSS-521A/J2RP)
2
sled motor ass‘y
4
Turn at the direction of the
arrow, then remove
shaft (sled) ass‘y
1
two screws
(P2 × 3)
3
optical pick-up
(KSS-521A/J2RP)
– 11 –
SW BOARD, SPINDLE MOTOR ASS’Y (M101)
8
two screws
(P1.7 × 2.2)
1
screw
(P2 × 2.2)
2
SW board
7
3
spring (chucking)
6
screw
4
(P2
5
bracket (CP)
9
Remove the spindle motor ass‘y (M101)
of the arrow.
retainer (disc)
×
2.2)
CHUCKING MOTOR ASS’Y (M103)
3
bracket
(load motor)
2
two screws (P2 × 2.5)
1
connector
(CNP51)
4
chucking motor ass‘y
(M103)
– 12 –
SECTION 3
TP
(VC)
IC11
IC51
CNJ12
BP11
(TE)
oscilloscope
+
–
ELECTRICAL ADJUSTMENTS
Note:
1. Perform adjustments as given.
2. Be sure to use the disc “YEDS-18” parts code: 3-702-101-01,
but only when indicated.
3. Power supply voltage: DC14.4 V (more than 3A).
• Focus Bias Check
[RF BOARD] – Conductor Side –
oscilloscope
CNJ12
TP (RF)
+
–
• Tracking Offset Check
[RF BOARD] – Conductor Side –
IC51
TP
(VC)
IC11
Procedure:
1. Connect the oscilloscope to RF board test point RF.
2. Put the set into play mode by loading the disc.
3. Confirm that oscilloscope waveform is clear and check RF signal level is correct or not.
Note:
Clear RF signal waveform means that the shape “≈” can be clearly
distinguished at the center of the waveform.
RF signal waveform
VOLT/DIV: 200 mV
TIME/DIV: 500 nsec
level: 1.4 ± 0.3 Vp-p
Procedure:
1. Connect the oscilloscope to RF board bridge point TE.
2. Put the set into play mode by loading the disc.
3. Press the = AMS + button, then, check the traverse waveform.
4. Confirm that the oscilloscope waveform is symmetrical on the
top and bottom in relation to 0 V dc, and check this level.
* Traverse waveform: This is the tracking error wave form ap-
pears when crossing the track.
VOLT/DIV : 500 mV
TIME/DIV : 2 msec
Center : 0 V
A
0 V
B
A=B
traverse waveform
(100 track jump waveform)
– 13 –
• FOCUS GAIN ADJUSTMENT
n
(COARSE ADJUSTMENT)
This adjustment is to be performed when replacing the following
parts.
• Optical Pick-up Block
• RV14
[RF BOARD] – Conductor Side –
CNJ12
IC51
• When gain is lowered...
The set does not play because of no focus operation.
• When gain is highered...
Operation noise is heard due to a scratch or a dust, then operation
will be unstable.
RV14
IC11
Procedure:
1. Set RV14 (RF board) to the standard position.
2. Check that there is not an abnormal amount of operation noise
(white noise) from the 2-axis devise. If there is, turn RV14
slightly clockwise.
[RF BOARD] – Conductor Side –
MIN side
(low gain)
MAX side
(high gain)
RV14 standard positio
– 14 –
4-1. BLOCK DIAGRAM
RF SIGNAL PROCESSING
OPTICAL PICK-UP BLOCK
(KSS-521A)
I-V AMP
LD DRIVE
Q11
RV14
FOCUS
GAIN
39
PD2
38
PD1
42
E
41
F
37
PD
4CH.SERVO DRIVER
12
13
2
1
26
27
17
16
1
7
PD
LD
FOCUS
TRACKING
M102
(SLED)
M101
(SPINDLE)
M103
(CHUCKING)
• SIGNAL PATH
IV
IV
IV
IV
M
M
M
IC11
SERVO AMPLIFIER
SENS2
C.OUT
XRST
LOCK
RF_O
SENS1
DATA
36
LD
1
SL_O
FEO
2
TA_O
FEI
51
VC
FE_O
IC51
DRIVER
CONTROL
DRIVER
CONTROL
DRIVER
CONTROL
DRIVER
CONTROL
IC52
MOTOR DRIVER
DRIVER
CONTROL
FOK
XLT
CLK
CDX-805
SECTION 4
DIAGRAMS
IC201
SYSTEM CONTROLLER
IC301
CONTROL
DIGITAL
MICON
+5V
RV201
SENSOR
IC501
BUCK
EXTAL
DATA0
DATA7
ADD0
ADD14
MUTE DRIVE
Q601, 602
MUTE
Q603
DRIVER
78
28
RST
29
30
XTAL
62 20
CE
63 27
WE
20
ı
27
11
ı
18
·
64
ı
69
·
74
7
M
1
SONY BUS INTERFACE
11
SCK
10
SI
9
SO
1
BUS ON OUT
8
RESET
BACK-UP
SWITCH
Q301, Q302
X501
10MHz
MUTE
Q604
M104
(ELEVATOR)
IC302
IC502
SRAM
CE
WE
DO0
11
ı
13
·
15
ı
DO7
19
A0
10
ı
3
·
25
·
24
·
21
·
23
·
2
·
26
·
1
A14
CLK
DATA
BUS ON IN
LOF
RST
IC304
RESET
MOTOR DRIVE
– 16 –
4
6
2
12
7
SERVO
+5V
IC601
+5V
IC602
+8V
+9V
IC302
+5V
MICON
+5V
IC305
+5V REG.
IC307
+5V REG.
IC306
+8V REG.
2
4
+9V REG.
IC801
OPTICAL
DIGITAL
OUT
4
IC303
REG.
Q303
B+ SW
Q305
CD ON SWITCH
Q304
1
4
5
6
CN901
8
7
L
AUDIO OUT
R
1
2
(SONY BUS)
3
CDX-805
SW11
SW12
SW1
8
SENS2
22
FOK
54
C.OUT
21
XRST
7
1
47
D/A.RESET
45
ML
44
EMP
11
EE.CLK
12
EE.DATA
6
LOAD2
7
LOAD1
9
LIM.SW
57
MGLK
60
MAG.SW
25
GRSRT
42
XWRE
41
XRDE
29
ESPXLT
28
XSOE
27
SDTI
26
SQOK
46
GRSCOR
31
EXTAL
32
XTAL
67
CD.DATA
65
CD.CLK
66
CD.XLT
51
SCLK
52
SUBQ
23
SENS
24
GFS
63
SCOR
4
CH.F
5
CH.R
SCOR
WFCK
SBSO
26
27
24
23
19
14
100
FOK
CNIN
WDCK
PCMO
IC101
PROCESSOR
CLOCK
IC503
CLOCK OSC
XRST
LRCK
DOUT
BCKO
GTOP
RFCK
XROF
C4M
WFCK
SCOR
XTAI
DATA
XLAT
SQCK
SQSO
SENS
GFS
SBSO
29
IC403
TIMING
LOCK
6
1
49
50
71
52
54
58
62
64
70
74
75
WFCK
89
10
12
11
7
8
9
61
76
SBSO SCOR
7 13
SCOR
23
33
25
22
21
20
16
13
6
10
VC
9
4
5
24
23
19
VC
20
4
5
44
RF
13
SEIN
15
DATO
16
XLTO
17
CLKO
DIGITAL SIGNAL
27
MDP
77
EXCK
IC401
DRAM CONTROLLER
2
12
4
11
9
8
7
6
5
3
61
XRST
WDCI
LRCI
DIN
DATI
BCKI
GTOP
RFCK
XROI
C4M
WFCK
SCOR
DATA
BCK
LRCK
XRAS
XWE
XCAS
XOE
XTAI
GRST
XWRE
XRDE
XLT
XSOE
SDTO
XQOK
OSCR
SDTI
SCK
DOUT
IC604
INVERTER
18 8
17
19
A0
25
ı
22
·
40
ı
36
·
A9
27
D1
31
·
30
·
33
·
D4
32
28
29
34
35
16
1
44
45
46
49
50
59
60
47
48
20
12
14
18
24
25
23
22
A0
9
ı
·
ı
·
A9
5
D1
1
·
2
·
·
D4
4
XRAS
3
XWE
XCAS
XOE
D/A CONVERTER
7
9
IC402
DRAM
DATA
BCK
LRCK
IC601
OUT.L
OUT.R
RESET
CLOCK OSC
EMP
XTO
ML
XTI
IC603
IC602(1/2)
LINE AMP
X601
16MHz
6
5
IC602(2/2)
LINE AMP
2
3
6 5
IC202
EEPROM
(LOAD IN)
(LOAD OUT)
(LIMIT)
SW201
MAGAZINE
EJECT END
DETECT
SW202
MAGAZINE
IN/OUT
DETECT
X201
8MHz
18
17
6
11
12
5
4
43
A.MUTE
40
H.TEMP
58
ELV.F
70
ELV.R
56
A/D.SW
48
SCK
49
SI
50
SO
55
BUS.ON
62
W.UP
64
EJECT
61
BU CHK
38
MCK
39
EHS
68
CD.ON
69
ELV.ON
37
AVREF
10
EE.INIT
20
SINGLE
30
RST
75
RESET
74
BUSY
76
REQ
77
CCLK
78
CSI
79
CSO
: CD
: DIGITAL OUT
TH201
ELEVATOR MOTOR DRIVER
5
4
SW801
ANALOG
SW301
(EJECT)
LINER POSITION
RV202
LINER
POSITION
SENSOR
SWITCH
Q201
CD TEXT DECODER
56
BUSY
4
REQ
5
CCLK
6
CSI
7
CSO
76
SCOR
77
WFCK
9
SSI
8
SCLK
– 15 –
• Wavef orms
µ
6.4 Vp-p
11.4 µsec
µ
µ
1 IC101 @¶ (MDP)
2.5 Vp-p
5 IC101 &¢ (WFCK) 9 IC401 !¶ (BCK)
6.1 Vp-p
6.8 Vp-p
7.6 µsec
2 IC101 $ª (WDCK) 6 IC101 *ª (XTAI) !º IC401 !£ (WDCI)
5.7 Vp-p
7.6
sec
7 IC201 #¡ (EXTAL) !¡ IC501 @ª (EXTAL)3 IC101 %º (LRCK)
6.1 Vp-p
91 µsec
3.4 Vp-p
59 nsec
3.4 Vp-p
472 nsec
3.3 Vp-p
4 IC101 ^™ (RFCK)
sec
15
91 µsec
5.5 Vp-p
125 nsec
8 IC401 !ª (LRCK)
23
– 31 –
sec
6.5 Vp-p
100 nsec
!™ IC601 5 (XTI)
3.5 Vp-p
62 nsec
• IC Block Diagrams
– MAIN Section –
IC101 CXD2530Q
TES6
VDD
VSS
EXCK
79 78
80
77
NC
81
82
VSS
VDD
83
NC
84
85
TES7
86
NC
VSS
87
XVDD
88
XTAI
89
XTAO
90
91
XVSS
92
VSS
NC
93
TES8
94
NC
95
VDD
96
97
VSS
98
NC
NC
XRST
99
100
TIMING
LOGIC
SBSO
SCOR
76 75 74
INTERFACE
WFCK
TES5
EMPH
73 72
EFM
DEMODULATOR
SUB CODE
PROCESSOR
CPU
71
DOUT
70
C4M
69 68
FSTT
XTSL
CORRECTOR
SERVO
AUTO
SEQUENCER
MNT0
MNT1
66 65 64
67
ERROR
16K RAM
MNT3
XROF
63 62
C2PO
RFCK
61
INTERFACE
DIGITAL OUT
GFS
D / A
XPCK
60
XUGF
GTOP
59 58
57
DIGITAL CLV
VDD
VSS
56 55 54
TES4
BCK
TES3
535251
ASYMMETRY
CORRECTOR
DIGITAL
PLL
CLOCK
GENERATOR
PCMD
OSC
TES9
LRCK
50
49
WDCK
48
ASYE
47
ASYO
ASYI
46
BIAS
45
RF
44
AVDD
43
42
CLTV
AVSS
41
40
FILI
39
FILO
PCO
38
VCTL
37
V16M
36
35
VCKI
34
VPCO1
33
VPCO2
32
TES1
31
TES0
1 234
VSS
VDD
56789 10
TES2
LMUT
RMUT
CKOUT
SQCK
SQSO
SENS
11
DATA
XLAT
12 13
CLOK
14
SEIN
15 16 17
CNIN
DATO
XLTO
18 19 20
CLKO
SPOA
SPOB
21
SPOC
22 23
SPOD
XLON
FOK
24
VDD
25 26 27
VSS
MON
28 29 30
MDP
MDS
LOCK
PWMI
IC202 NM24C16EM8X IC301 BA6287F
VCC
8
NC
SCL
D OUT
SDA
8
7
6
5
START CYCLE
START/
STOP
LOGIC
CONTROL
R/W
LOGIC
LOAD
WORD
ADDRESS
COUNTER
INC
SLAVE ADDRESS
REGISTER &
A0
1
A1
2
A2
3
4
VSS
COMPARATOR
DEVICE
ADDRESS
BITS
D OUT
ACK
H.V. GENERATOR
TIMING & CONTROL
4
CK
D IN
EEPROM
128 x 16 x 8
16
Y
DECODER
8
DATA
REGISTER
X
DECODER
416
OUT1
VM
VCC
FIN
1
2
DRIVER DRIVER
TSD
3
POWER
SAVE
4
CONTROL LOGIC
GND
8
OUT2
7
VREF
6
RIN
5
– 32 –
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