Sony Cdx L550 570x Manual

							11
CDX-L550X/L570X
1 tension spring (KF1) 7 compression spring (FL)6 floating block assy
8 compression spring (FL)
4 Fit lever (D) in the
     direction of the arrow.
2 damper (T)
3 damper (T) 5 Turn loading ring in the
     direction of the arrow.
Fig. 1
1 tension spring (RA)2 arm (roller) 3 retaing ring (RA)
4 shaft retainer
      (roller)
5 shaft roller assy
retaing ring (RA)
armarm
washer
washer shaft retainer (roller)
shaft retainer (roller)
2-9. FLOATING BLOCK ASSY 2-8. ARM ROLLER ASSY
• When installing, take note of the positions
  arm (roller) and washers. (Fig. 1) 
						

							12
CDX-L550X/L570X
1 P 2x3
2 sled motor assy
3 optical pick-up block
2-10. OPTICAL PICK-UP BLOCK 
						

							13
CDX-L550X/L570X
3-1. IC PIN DESCRIPTION
• IC801 MN101C49KTG1 (SYSTEM CONTROL)
Pin No. Pin Name I/O Pin Description
1 VREF– — Ground for A/D converter power supply
2 VSM I S-meter voltage detection signal input from tuner unit (TU601)
3 NIL I Connect to ground.
4 KEYIN1 I Key signal input
5 KEYIN0 I Key signal input
6 RC IN0 I Rotary commander key signal input from remote in jack (CNP801)
7, 8 NIL I Not used. (Connect to ground.)
9 DSTSEL I Destination set up detection signal input (“L”: CDX-L550X, “H”: CDX-L570X)
10 VREF+ — A/D converter power supply
11 VDD — Power supply (+5 V) input pin
12 OSCOUT O High speed clock signal output (18.432 MHz)
13 OSCIN I High speed clock signal input (18.432 MHz)
14 VSS — Ground for power supply
15 XIN I Low speed clock signal input (32.768 kHz)
16 XOUT O Low speed clock signal output (32.768 kHz)
17 MMOD IMemory mode select signal input (Input to “Low” (single chip mode).)
(Connect to ground.)
18 LCDSO O LCD serial data signal output to LCD driver (IC501)
19 LCDCE O LCD chip enable signal output to LCD driver (IC501)
20 LCDCKO O LDC serial clock signal output to LCD driver (IC501)
21 CD SO/TSO O CD servo IC serial data signal output
22 CD SI/TSI I CD servo IC serial data signal input
23 CD CKO/TCKO O CD servo IC serial clock signal output
24 SYSRST O System reset signal output to bus interface (IC803)
25 BUS ON O Bus on signal output to bus interface (IC803)
26 KEYACK I Key acknowledge detection signal input
27 NIL I Not used. (Connect to ground.)
28 BU IN I Back up current detection signal input
29 SIRCS I Remote signal input from remote control receiver (IC502)
30 CD SELFSW I CD mechanism self load position detection switch signal input from self switch (SW2)
31 CD PACK I CD text pack sync signal input from CD servo (IC1)
32 NIH I Connect to power supply.
33 RESET I microcomputer reset signal input from reset IC (IC802)    “L”: reset
34 NOSE SW I Front panel attachment detection signal input from nose detect switch (S902) “L”: ON
35 BEEP O Beep signal output to power amp (IC404)
36 NCO O Not used. (Open)
37 TESTIN I Test mode detection signal input
38 ACCIN I Accessory power supply detection signal input
39 NCO O Not used. (Open)
40 TELATT I Telephone ATT detection signal input
41 NIH I Connect to power supply.
42 BUSSO O Sony-Bus serial data signal output to bus interface (IC803)
43 BUSSI I Sony-Bus serial data signal input from bus interface (IC803)
44 BUSCKO O Sony-Bus serial clock signal output to bus interface (IC803)
45 I2CSIO I/O I2C bus serial data signal input/output
46 NCO O Not used. (Open)
47 I2CCKO O I2C bus serial clock signal output
48 NCO O Not used. (Open)
49 TUNON O Tuner power supply control signal output to power supply (IC901)
50 PW ON O System power supply control signal output to power supply (IC901)
SECTION 3
DIAGRAMS 
						

							14
CDX-L550X/L570X
Pin No. Pin Name I/O Pin Description
51 CD TSTB O CD text parameter strob signal output to servo IC (IC1)
52 CD RFOK I RF OK signal input from servo IC (IC1)
53 CD XRST O Reset signal output to servo IC (IC1)
54 CD A0 OCommand/parameter identification signal output to servo IC (IC1)
“L”: Command, “H”: Parameter
55 CD STB O Data strob signal output to servo IC (IC1)
56 CD XTALEN O Crystal oscillation control signal output to servo IC (IC1)
57 CD LIMIT I CD Mechanism in-limit switch signal input from limit switch (SW3)
58 CD PH1 I CD Mechanism PH1 detection signal input    Not used in this set.
59 CD DSW I CD Mechanism down switch signal input from down switch (SW4)
60 CD INSW/PH2 I CD Mechanism disc-in switch detection signal input from disc-in switch (SW1)
61 CD PH3 I CD Mechanism PH3 detection signal input    Not used in this set.
62 CD LM LO O CD Mechanism loading motor control signal output to loading motor drive (IC2)
63 CD LM EJ O CD Mechanism eject motor control signal output to loading motor drive (IC2)
64, 65 NCO O Not used. (Open)
66 AMPATT O Power amp ATT control signal output to power amp (IC404)
67 AMPON O Power amp standby control signal output to power amp (IC404)
68 CDM ON O CD mechanism deck power supply control signal output
69 ATT O System ATT control signal output
70 VOLATT O Electrical volume ATT control signal output to electrical volume (IC401)
71 – 75 NCO O Not used. (Open)
76 4VPRE I Pre-out menu selection set up signal input
77, 78 NCO O Not used. (Open)
79 CD ON O CD on signal output     “H”: Play, “L”: Loading or standby
80 – 85 NCO O Not used. (Open)
86 EE SIO I/O EEPROM serial data signal input/output
87 EE CKO O EEPROM serial clock signal output
88 NCO O Not used. (Open)
89 FLASH W I Flash microcomputer write detection signal input    “L”: Write mode
90 NCO O Not used. (Open)
91 XKEYON O Key power supply control signal output
92 DOORIND O Sub panel power supply control signal output
93 ILLON O Illumination power supply control signal output
94 DOOR SW I Front panel open/close detection signal input    “L”: Close, “H”: Open
95 DAVSS — Ground pin
96 RE IN1 I Rotary encoder signal input from rotary encoder (RE501)
97 RE IN0 I Rotary encoder signal input from rotary encoder (RE501)
98 RC IN IRotary commander shift key signal input from remote in jack (CNP801)
“L”: Shift key on
99 NCO O Not used. (Open)
100 DAVDD — Power supply pin 
						

							15 15
CDX-L550X/L570X
82
83
84
85
1612D/A
CONV
TRACKING
ERROR
FORCUS
ERROR
9
1
OSC
EFM
DEMOD
SERVO
CTL
RF
EQ
5256
5455DSUB CODE
PROCESS
8
7
6
5
4
3
2
56
60
28
30
57
59
68
79
3151
21
22
23
55
54
53
52
I/F
87
86
97
98LD
DRIVE
Q1
FOCUS
COIL
DRIVE
TRACKING
COIL
DRIVE
SLED
MOTOR
DRIVE
SPINDLE
MOTOR
DRIVE
LOADING
MOTOR
DRIVE
6
5
23
2
15
16
17
18
13
14
11
12
9
10
26
62636465
63
62
33
POWER
CONTROL
Q908, 909
POWER
CONTROL
Q907
REG
Q910
BATT DET
Q803
REG
Q911 M902
(SLED)
M901
(SPINDLE)
M903
(LOADING)
SW3
(LIMIT)
 SW2
(SELF)
  SW4
(DOWN)  SW1
(DISC IN) X1
16.9344MHz
OPTICAL PICK-UP
KSS-720A
I-V
CONV.
CDL
CD PACK
TSTB
CD_TSTB
CD_AO CD_SO/TSO
CD_SI/TSI
CD_CKO/TCKO
CD_XRST
CD_RFOK
CD_XTALEN
BU IN
CD_INSW/PH2
CD_LIMIT CD_SELF SW
CD_DSW
CD_LM LO
CD_LM EJ
CDM ON
CD ON R-CH
TUNER
SECTION
A
2324
M
M
M
1
RESET
S901
RESET2 IC802
D901
BATT
BU 5V
BATT LOUT
ROUT
PACK
TSTB
TSI TSCK
SI
RFOKSO
SCK
STB
AO
XTALENRST
RESET
A
C
B
D
E
F
PD
LDA
C
B
D
E
F
PD
LDAPC
FCS-
FCS+
TRK+
TRK-
SL-
SL+
SP+
SP-
LD-
LD+ FOCUS
COIL
TRACKING
COILFD
TD
SD
MD
LOAD
EJECTQ802, 805
BUFFER SYSTEM CONTROL
IC801(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
            :CDA5V
AU5V
D5V
DR6V
D804
3-2. BLOCK DIAGRAM — CD SECTION —
(Page 16) 
						

							16 16
CDX-L550X/L570X
PJ601
(ANTENNA)210
1ANTFM MPXCDL8 AM DET
14 S-METER12 I2C SDA13 I2C SCL
17 E2PROM SDA18 E2PROM SCL ANTAMTUNER UNIT
TU601
24547
70
1314192017
9
12
43
428
SYSTEM CONTROL
IC801 (2/3) ELECTRONIC VOLUME
IC401
AUX LCH OUT FL
27 OUT RL
35
BEEPATT67
69
AMP ON
66
AMP ATT40
TEL ATT
38
ACC IN MD LCH
MPXI
AM
LEVEL
MPIN
SDA
SCL
EXA ATT
VOL ATT
VSM
I2C SIO
I2C CKO
DSTSEL
EE SIO FM 50K
AM 9K  FREQUENCY
SELECT SW802
 L570X  L550X
EE CKO
AUDIO OUT REAR
CD
SECTION
A
MUTE
CONT
Q912,913
Q102
MUTE
R-CH
DELAY BATTD908 Q101
MUTE
22MUTE4STBY
16AUX 
11
1253
97 POWER AMP
IC404
1
9
2
10 CNP902 R-CHPJ401
FL+
FL-
RL+
RL-
4
12FR+
FR-
3
11RR+
RR-
16+B (BATT)
13
ATT
5
AMP R
6
8
19ANT R
GND R-CH
BATT
F901
10A D919
D907
TEL
ATT
Q901
7
ACC
15
TEST
49
50 TUN ON
37
TEST IN
ACC
CHECK
Q902, D934, 935
POWER SUPPLY
IC901
3
PW ON
4
2
6AMP +B
8
ANT +B
7
VCC
9
COM 8V10
TU 5.6V11
TU 8.7VCOM 8V
5
BU+B BU 5V
TU 5.6V
TU 8.7V 8.7V ON
5.6V ON
STB
9
8786
()
FM 200K
AM 10K17
18
L
R
• Signal path
            :FM
            :AM
            :CD
3-3. BLOCK DIAGRAM — TUNER SECTION —
(Page 15) 
						

							17 17
CDX-L550X/L570X
KEY MATRIX
LSW501-510,
LSW513-522
KEY
ACTIVE
Q801
DOOR IND
DRIVE
Q914, 915
IR
RECEIVE
CNP801
(REMOTE IN)
ROTARY
ENCODER
RE501
IC502
S902
(NOSE DET)
X802
32.768kHz
9796
34
15
16
12
13
51820194
26
91
986
29SYSTEM CONTROL
IC801 (3/3)LCD DRIVE
IC501
KEY IN0
DATA
CLK
CE LCD SO
LCD CKO
LCD CE
POWER
CONT
Q906
SWITCH
Q905
92 DOOR IND KEY IN1
KEY ACK
AD ON
RC IN1
RC IN0
SIRCS
RE IN0
RE IN1
NOSE SW
XIN
XOUTOSC OUT
93 ILL ON
BATT
OSC INX801
18.43MHz
LED905,LSW916
LED510-513 LSW501-510
LSW513-522
LCD BACK
LIGHT
787776
COM1
COM4LCD
LCD500
D801
D802
()
KEY
ILLUMINATION()
65
|
68
80•1
|
64
| SEG2
SEG66|
3-4. BLOCK DIAGRAM — DISPLAY SECTION —
tuner unit
(TU601) IN SELF SW board
DISPLAY board RELAY board
SERVO boardMAIN board SL SW board
3-5. CIRCUIT BOARDS LOCATION
— Main Board —
1
2
IC801  qh  (XOUT)
18.43MHz
IC801  qs  (OSCOUT)
3.8Vp-p
5Vp-p
30.5µsec
• Waveforms
— Servo Board —
(MODE: CD PLAY)
1
2
3
IC1  ts  (PACK)
IC1  
uj  (RFO)
1.2Vp-p
4
Approx. 1Vp-p
IC1  oa  (FEO)
0V
5
Approx. 400mVp-p
IC1  od  (TEO)
4.4Vp-p
16.9344MHz
IC1  wd  (XTAL)
4.8Vp-p
0V 34msec 
						

							18 18
CDX-L550X/L570X
3-6. PRINTED WIRING BOARDS — CD MECHANISM SECTION —
Note:
The components identi-
fied by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specified.Note:
Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié. 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 Ω and 
1/4
 W or less unless otherwise
specified.
• % : indicates tolerance.
•
f: internal component.
•C: panel designation.
•A: B+ Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• Voltages are taken with a VOM (Input impedance 10 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: AM
J: CD
for printed wiring boards:
•X: parts extracted from the component side.
•Y: parts extracted from the conductor side.
•
x: parts mounted on the conductor side.
•a: Through hole.
•: Pattern from the side which enables seeing.
(The other layer’s patterns are not indicated.)
Caution:
Pattern  face  side: Parts on the pattern face side seen from the
(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-L550X/L570X
(Page 21)Ref. No. Location
IC1 D-2
IC2 G-2
Q1 B-3 • Semiconductor
Location 
						

							20 20
CDX-L550X/L570X
IC B/D
IC B/D
• Refer to page 17 for Waveforms.
3-7. SCHEMATIC DIAGRAM — CD MECHANISM SECTION —  • Refer to page 28 for IC Block Diagrams.
(Page 22)
Note:
• Voltage is dc with respect to
ground under no-signal conditions.
no mark : CD PLAY