Sony CDX-CA890X User manual

1
Ver 1.0 2003. 02
Model Name Using Similar Mechanism CDX-CA790X
CD Drive Mechanism Type MG-393XA-121//Q
Optical Pick-up Name KSS-720A
SERVICE MANUAL
E Model
CDX-CA890X
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 FM tuning interval:
50 kHz/200 kHz switchable
87.5 – 108.0 MHz
(at 50 kHz step)
87.5 – 107.9 MHz
(at 200 kHz step)
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
AM
Tuning range AM tuning interval:
9 kHz/10 kHz switchable
531 – 1,602 kHz
(at 9 kHz step)
530 – 1,710 kHz
(at 10 kHz step)
Aerial terminal External aerial connector
Intermediate frequency 10.7 MHz/450 kHz
Sensitivity 30 µV
SPECIFICATIONS
Power amplifier section
Outputs Speaker outputs
(sure seal connectors)
Speaker impedance 4 – 8 ohms
Maximum power output 52 W ×4 (at 4 ohms)
General
Outputs Audio outputs (front/rear)
Subwoofer output (mono)
Power aerial relay control terminal
Power amplifier control terminal
Inputs Telephone ATT control terminal
BUS control input terminal
BUS audio input terminal
Remote controller input terminal
Aerial input terminal
Tone controls Bass ±8 dB at 100 Hz
Treble ±8 dB at 10 kHz
Loudness +8 dB at 100 Hz
+2 dB at 10 kHz
Power requirements 12 V DC car battery
(negative earth)
Dimensions Approx. 178 ×50 ×180 mm
(w/h/d)
Mounting dimensions Approx. 182 ×53 ×161 mm
(w/h/d)
Mass Approx. 1.2 kg
Supplied accessories Card remote commander RM-X118
Parts for installation and connections (1 set)
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
9-877-053-01
2003B0400-1
© 2003. 02
FM/AM COMPACT DISC PLAYER

2
CDX-CA890X
optical pick-up bloc
k
semi-fixed resistor
If the optical pick-up block is defective, please replace the whole
optical pick-up block.
Never turn the semi-fixed resistor located at the side of 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.
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∗.
∗A process necessary for a recorded CD-R/CD-RW disc to be
played on the audio CD player.
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.
SERVICE NOTES
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.
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).
CLASS 1
LASER PRODUCT
VIEW DIRECTLY WITH OPTICAL INSTRUMENTS
DO NOT STARE INTO BEAM OR
INVISIBLE LASER RADIATION WHEN OPENCAUTION

3
CDX-CA890X
EXTENSION CABLE AND SERVICE POSITION
Whenrepairing or servicingthis set,connect the jig(extension cable)
as shown below.
•Connect the MAIN board (CNP301) and the SERVO board (CN1)
with the extension cable (Part No. J-2502-011-1).
•UNLEADED 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 boardsmay not come printedwith
the lead free mark due to their particular size.)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
•Unleadedsolder melts at atemperature 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.
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, MJ Board ........................................................... 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–........................................... 15
3-3. Block Diagram –Tuner Section–....................................... 16
3-4. Block Diagram –Display Section–.................................... 17
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 Boards –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. EXPLODEDVIEWS
4-1. Chassis Section ................................................................. 31
4-2. Main Board Section .......................................................... 32
4-3. Front panel Section ...........................................................33
4-4. CD Mechanism Section (1) ............................................... 34
4-5. CD Mechanism Section (2) ............................................... 35
4-6. CD Mechanism Section (3) ............................................... 36
5. ELECTRICAL PARTS LIST......................................... 37
CDX-CA890X

5
CDX-CA890X
SECTION 1
GENERAL This section is extracted
from instruction manual.
4
Location of controls
Refer to the pages listed for details.
aDSO button 20
bSOURCE (Power on/Radio/CD/MD)
button
To select the source.
cVolume +/– button
dDisplay window
eZ(eject) button (located on the front side
of the unit, behind the front panel) 9
fSEEK +/– button
To skip tracks, fast-forward, reverse a track,
tune in stations automatically, and find a
station manually.
gOPEN button 8, 9
hEQ7 button 19
iATT (attenuate) button 17
jMODE button
To change the operation.
kDSPL (display mode change) button
10, 12
lSOUND button 17, 20, 21
mRESET button (located on the front side of
the unit, behind the front panel) 7
nFrequency select switch (located on the
bottom of the unit)
See “Frequency select switch” in the
Installation/Connections manual.
oDISC/PRESET –/+ button
To receive preset stations, change the disc*
1
,
and skip albums*
2
.
pCOLOR button 21
To change the LCD colour.
qSCRL (scroll) button 10
rOFF (Stop/Power off) button*
3
8, 9
sReceptor for the card remote
commander
*1 When an optional CD/MD unit is connected.
*2 Available only when optional CD unit with the
MP3 file control function is connected.
*3 Warning when installing in a car without
an ACC (accessory) position on the
ignition switch
After turning off the ignition, be sure to press
and hold (OFF) on the unit until the display
disappears.
Otherwise, the display does not turn off and
this causes battery drain.
CDX-CA890X
DSPL
ATT
MODE
S
O
U
R
C
E
SCRLCOLOR DISC/PRESET
OFF
O
P
E
N
DSO EQ7
SEEK
SOUND
5
The corresponding buttons of the card
remote commander control the same
functions as those on this unit.
aDSPL button
bNumber buttons
(1)
REP 11
(2)
SHUF 11
To store stations, receive stored stations.
cDSO button
dMENU button
To display the menus.
eSOURCE button
fSEEK (</,) buttons
In menu mode, to select a setting.
gSOUND button
hOFF button
iVOL (+/–) buttons
jEQ7 button
kMODE button
lLIST button
12, 15
mDISC (M/m) buttons
In menu mode, to select a menu.
nENTER button
To enter a setting.
oATT button
Note
If the display disappears by pressing
(OFF) , it cannot
be operated with the card remote commander unless
(SOURCE) on the unit ispressed, or a disc is inserted
to activate the unit first.
Tip
See “Replacing the lithium battery” on page 22 for
details on how to replace the batteries.
Card remote commander RM-X118
DISC
–
AT TOFF
REP SHUF
DSPL
1
4
MODE
2
5
3
6
SOURCE
DISC
+
SEEK
+
SEEK
–
SOUND
ENTER
MENU
LIST
EQ7DSO
VOL

6
CDX-CA890X
Connections

7
CDX-CA890X
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
4 CN351
5 sub panel assy
3 claws
2 claws
1 PTT 2.6x6
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,
LOAD BOARD
(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, MJ BOARD
(Page 9)

8
CDX-CA890X
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
4 PTT 2.6x6
5 MAIN board
2 PTT 2.6x6

9
CDX-CA890X
2-5. CHASSIS (T.U) ASSY
2-4. HEAT SINK, MJ BOARD
4 chassis (T.U) assy
3 P 2x3
2 P 2x3
1 Unsolder the
lead wires.
black
red
white
3 PTT 2.6x8
1 PTT 2.6x6
2 cord (RCA)
5 PTT 2.6x
8
6 heat sink
0 MJ board
9
8
7
4
PTT 2.6x12

10
CDX-CA890X
2-6. DISC IN BOARD
2-7. SERVO BOARD
3 claws
2 DISC IN board
4 guide (disc)
1 PS 2x3
6 PTT 2x4
6 PTT 2x4
1 CN3
2 Removal the solders.
4 P 2x3
5 loading motor assy
8 SERVO board
9 PICK-UP FLEXIBLE board
optical pick-up block
3 Unsolder the
lead wires.
black
yellow

11
CDX-CA890X
2-9. FLOATING BLOCK ASSY
2-8. SHAFT ROLLER ASSY
• When installing, take note of the positions
arm (roller) and washers. (Fig. 1)
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)
7 LOAD board
6 PTT 2x4
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.

12
CDX-CA890X
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-CA890X
3-1. IC PIN DESCRIPTION
• IC303 MN101C49KSH (SYSTEM CONTROL)
Pin No. Pin Name I/O Pin Description
1VREF– — A/D converter power supply (–) pin
2LVDATA I Spectrum analyzer data input from electronic volume IC.
3VSM I S-meter voltage detection input
4QUALITY I Noise detection input
5, 6 KEYIN1, 0 I Key input 1, 0
7RCIN0 I Rotary commander key input
8, 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 (+5 V)
12 OSCOUT O Main clock output (18.43 MHz)
13 OSCIN I Main clock input (18.43 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 Memory mode select input (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
25 BUSON O BUS ON output
26 KEYACK I Key acknowledge detection input
27 DAVN I Not used. (Open)
28 BUIN I Backup power supply input
29 SIRCS I SIRCS input
30 TUATTIN I Tuner attenuator control input
31 CD_PACK I CD text pack synchronization signal input from CD servo IC.
32 VDD2 — Power supply pin (+5 V)
33 RESET I Microcomputer reset input
34 NOSESW I Front panel attachment detection input
35 BEEP O Beep output
36 DSTSEL2 I Frequency select input
37 TESTIN I Test mode detection input
38 ACCIN I Accessory power supply detection input
39 NCO (VCC) O Not used. (Open)
40 TELATT I Telephone attenuator detection input
41 NCO (VCC) I Not used. (Fixed at H in this set)
42 UNISO O SONY-BUS data output
43 UNISI I SONY-BUS data input
44 UNICKO O SONY-BUS clock output
45 I2C_SIO I/O I2C BUS serial data input/output
46 NCO O Not used. (Open)
47 I2C_CKO O I2C BUS serial clock output
48 STB O Standby control output for power amp IC.
49 DIAG I Mode input from power amp IC.
50 SELFSW I CD mechanism deck Self switch detection input
SECTION 3
DIAGRAMS

14
CDX-CA890X
Pin No. Pin Name I/O Pin Description
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.
56 X_EN O Not used. (Open)
57 LIMIT I CD mechanism deck Limit switch detection input
58 PH1 I CD mechanism deck PH1 detection input (Not used in this set)
59 D_SW I CD mechanism deck Down switch detection input
60 INSW I CD mechanism deck Disc in switch detection input
61 NC (PH3) O CD mechanism deck PH3 detection input (Not used in this set)
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, 65 NCO O Not used. (Open)
66 AMPATT O Power amplifier attenuator control output
67 AMPON O Power amplifier standby control output
68 TUON O Tuner power supply control output
69 ATT O System attenuator control output
70 VOLATT O Electronic volume attenuator control output
71 LVCLK O Spectrum analyzer data output for electronic volume IC.
72 AUX_ON O Not used. (Open)
73 – 75 NCO O Not used. (Open)
76 DSTSEL0 I Not used. (Fixed at L in this set)
77 DSTSEL1 I Not used. (Open)
78 NCO O Not used. (Open)
79 XCD_ON O Not used. (Open)
80 – 83 NCO O Not used. (Open)
84 NS_MASK O Not used. (Open)
85 DOORIND O Sub panel power supply control output
86 EE_SIO I/O EEPROM serial data input/output
87 EE_CKO O EEPROM serial clock output
88 TUATT O Tuner attenuator control output
89 FLASH_W I Flash microcomputer write detection input
90 NCO O Not used. (Open)
91 AD_ON O Key power supply control output
92, 93 NCO O Not used. (Open)
94 DOORSW I Front panel OPEN/CLOSE detection input
95 DAVSS — D/A converter power supply (–) pin
96, 97 RE_IN1, 0 I Rotary encoder input 1, 0
98 RC_IN1 I Rotary commander SHIFT key input
99 RAMBU I Not used. (Fixed at L in this set)
100 DAVDD — D/A converter power supply (+) pin (+5 V)

15 15
CDX-CA890X
3-2. BLOCK DIAGRAM — CD SECTION —
84
85
82
83
16
12
D/A
CONV
TRACKING
ERROR
FORCUS
ERROR
9
1
OSC
EFM
DEMOD
SERVO
CTL
RF
EQ
52
56
54
55
DSUB CODE
PROCESS
8
7
6
5
4
3
2
59
50
60
57
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
15
16
17
18
13
14
11
12
9
10
26
62 63 64 65
63
62
33
M902
(SLED)
M901
(SPINDLE)
M903
(LOADING)
SW1
(DISC IN)
SW2
(SELF)
SW3
(LIMIT)
SW4
(DOWN)
X1
16.9344MHz
OPTICAL PICK-UP
KSS-720A
I-V
CONV.
CDL
STB
AO
CD_TSO
31 CD_PACK
51 TSTB
CD TSI
CD TCKO
CD_RST
RFOK
D SW
INSW
SELF SW
LIMIT
CD_LM _LO
CD_LM_ EJ
R-CH
TUNER
SECTION
A
23 24
M
M
M
1RESET
S303
(RESET)
2
IC302
U-COM+5V
LOUT
ROUT
PACK
TSTB
TSI
TSCK
SI
RFOK
SO
SCK
STB
AO
XTALEN
RST
RESET
A
C
B
D
E
F
PD
LD
A
C
B
D
E
F
PD
A+5V
LD
APC
FCS-
FCS+
TRK+
TRK-
SL-
SL+
SP-
SP+
LD-
LD+
FOCUS
COIL
TRACKING
COIL
FD
TD
SD
MD
LOAD
EJECT
SYSTEM CONTROL
IC303 (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
• R-ch is omitted due to
same as L-ch.
(Page 16)

1616
CDX-CA890X
J501
(ANTENNA) 14
ANT L
CDL
3
R
6
S-METER
8
MUTE CONDITION
TUNER UNIT
TUX501
14
TU SDA
10
VCC
11
TU VDD
13
TU SCL
3
14
16
15
13
12
40
42
24
SYSTEM CONTROL
IC303 (2/3)
ELECTRONIC VOLUME
IC401
OUTLR
17
OUTSW
31
ACINL
32
ACOUTL
21
OUTRR
22
OUTRF
25
OUTLF
48
BEEP
STB
49
35
ATT 69
DIAG
40
TEL ATT
38
ACC IN
MDL
AML
R-CH
FL IN
RL IN
SAIN
SAOUT
MUTE
SCL
SDA
AUDIO OUT REAR
CD
SECTION
A
MUTE
Q404
MUTE
Q406
MUTE
Q407
36
DSTSEL2
2SDA
4SCL
IN FL
IN RL
16 ACGND
22 STB
25 DIAG
D120
D121
AU5V
D5V
A5V
BATT
SW
11
12 5
3
9
7
20
6
POWER AMP/VOLTAGE REGULATOR
IC201
1
-1
-2
-3
-4
9
2
10
CNP101
J401
FL+
FL-
RL+
RL-
4
12
FR+
BATT
FR-
3
11
RR+
RR-
5AMP R
16 +B
13 ATT
8GND
R-CH
F901
10A
TEL ATT SW
Q103
ACC DET
Q102 7ACC
15 TEST
37
TEST IN
SYSRST
BUSON
UNISI
UNICKO
UNISO
BU IN
TUNER
+5V REG
Q501
BATT
18
17
BATT
SW1
SW2
VP
L
R
BUS AUDIO IN
R-CH
R-CH
L
R
7PDR+
R-CH
R-CH
R-CH
R-CH
43 MDR
41 AMR
4PDL+
BUS INTERFACE
IC301
10
12
9
8
11
13
28
I2C SIO
30
45
I2C CKO
47
VOL ATT
70
LV DATA
2
LV CLK
VSM
TU ATT IN
7
TU MUTE
17
E2PROM SDA
16
E2PROM SCL
88
86
87
TU ATT
4QUALITY
EE CKO
EE SIO
71
25
42
43
44
24
6DATA I/O
4CLK
2RST
CN101
BUS
CONTROL IN
33
ACINR R-CH
R-CH
1BUSON
3
6
5
4
3
8
7
2
1
BATT
-5
-6
R-CH
L
R
CN401
-1
-2
SUB OUT (MONO)
AUDIO OUT FRONT
L
R
RST
BUSON
DATA OUT
CLK IN
DATA IN
B/U-C
D104
BATT
D105
LINE MUTE
CONTROL
Q401,402
6ANT R
AU8V
29
27
35
REG
31
DR6V 33
U-COM+5V 37
AU8V 30
KEY+B 34
FL+
FL-
RL+
RL-
VP1
VP2
BATT CHECK
Q101
S301
FREQUENCY
SELECT
10K
9K
• Signal path
:FM
:AM
:CD
• R-ch is omitted due to same as L-ch.
3-3. BLOCK DIAGRAM — TUNER SECTION —
(Page 15)

17 17
CDX-CA890X
3-4. BLOCK DIAGRAM — DISPLAY SECTION — 3-5. CIRCUIT BOARDS LOCATION
• Waveforms
— Servo Board —
(MODE: CD PLAY)
1
2
3
IC1 ts (PACK)
IC1 uj (RFO)
1.5Vp-p
4
Approx. 100mVp-p
IC1 oa (FEO)
0V
5
Approx. 100mVp-p
IC1 od (TEO)
1.8Vp-p
16.9344MHz
IC1 wd (XTAL)
5Vp-p
0V
3.3msec
— Main Board —
1
2
18.43MHz
IC303 qs (OSCOUT)
1.8Vp-p
32.768kHz
IC303 qh (XOUT)
5.2Vp-p
LSW901-912
S902-905
KEY
ACTIVE
Q304
DOOR IND
SWITCH
Q303
REMOTE
RECEIVE
CNJ101
(REMOTE IN) IC971
X301
32.768kHz
15
16
12
13
618
20
19
5
26
91
98
7
29
SYSTEM CONTROL
IC303 (3/3)
LCD DRIVE
IC901
KEY IN0 DATA
CLK
CE
LCD SO
LCD CKO
LCD CE
KEY IN1
KEY ACK
AD ON
RC IN1
RC IN0
SIRCS
85 DOORIND
34 NOSESW
XIN
XOUT
OSC OUT
OSC IN
X302
18.43MHz
100
99
98
COM1
COM4
AMBER1
BLUE1
GREEN1
GREEN2
AMBER2
AMBER,
BLUE,
GREEN
LED DRIVE
Q901-903,907,908
LCD
LCD901
KEY+B (10V)
LSW901-912
LED910-915,921-924
D303
S801
D302
KEY
ILLUMINATION
()
90
|
87
|
SEG01
SEG80
7
|
86
|
LCD DATA
LCD CLK
LCD CE
94 DOOR SW
Z
S302
(NOSE)
LED801
(DOOR INDICATOR)
LED802
Z
KEY MATRIX
SUB
BOARD
2
3
4
5
6
KEY board
MAIN board
LIMIT board
DISC IN board
LOAD board
SUB (CD) board
SUB board
MJ board
SERVO board
tuner unit
(TUX501)

1818
CDX-CA890X
1
A
B
C
D
E
F
G
H
I
234567891011121314
CN2
3-6. PRINTEDWIRING 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.
•Powervoltageisdc14.4Vand fed with regulated dc power
supply from ACC and BATT cords.
•Voltagesare taken with aVOM(Inputimpedance10MΩ).
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.)
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: Partsonthepatternfacesideseenfromthe
(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-CA890X
1
A
B
C
D
E
F
G
H
I
234567891011121314
SW4
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
SW3
SW1
SW2
(Page 21)
: Uses unleaded solder.

2020
CDX-CA890X
• Refer to page 17 forWaveforms and page 18 for Common Note on Schematic Diagram.
3-7. SCHEMATIC DIAGRAM — CD MECHANISM SECTION — • Refer to page 27 for IC Block Diagrams.
(Page 23)
Note:
•Voltage is dc with respect to
ground under no-signal conditions.
no mark : CD PLAY
IC B/D
IC B/D
TP77
TP78
R29
R30
C43
TP79
TP80
TP81
TP82
TP83
TP84
CN2
CN3
SW3
M902
M901
SW2
SW1
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
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
TP93
TP94
TP95
TP96
TP97
TP98
TP85
C15
C16C70
C24
C35
C38
C36
FB5
C25
C34
C71
C29
C27
C41
C22
C30
C18
Q1
IC2
CN1
C6
TP1
TP4
TP5
SW4