Sony Discman D-180AN User manual

MICROFILM
D-180AN/180ANC/181/181C/181V/182CK/183
SERVICE MANUAL
COMPACT DISC COMPACT PLAYER
SPECIFICATIONS
Model Name Using Similar Mechanism NEW
CD Mechanism Type CDM-2811AAA
Optical Pick-up Type DAX-01A
CD player
System
Compact disc digital audio system
Laser diode properties
Material: GaAIAs
Wavelength : λ= 780 nm
Emission duration: Continuous
Laser output : 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 with 7 mm aperture. )
Error correction
Sony Super Strategy Cross Interleave Reed
Solomon Code
D-A conversion
1-bit quartz time-axis control
Frequency response
20 - 20,000 Hz +1 dB (measured by EIAJ CP-
307) -2
Output (at 4.5 V input level)
Headphones (stereo minijack)
15 mW + 15 mW at 16 ohms
Line output (stereo minijack)
Output level 0.7 V rms at 47 kilohms
Recommended load impedance over 10
kilohms
General
Power requirements
For the area code of the model you purchased,
check the upper left side of the bar code on the
package.
• Sony BP-DM10 Rechargeable battery:
2.4 V DC, Ni-Cd. 650 mAh
Sony BP-DM20 Rechargeable battery:
2.4 V DC, Ni-Mh, 1,200 mAh
• Two LR6 (size AA) batteries: 3 V DC
• AC power adaptor (DC IN 4.5V jack):
US, Canadian, Central and South America
model: 120 V, 60 Hz
AEP, Italian, French, E13, EE model:
220 - 230 V, 50/60 Hz
UK model: 230 - 240 V, 50 Hz
EA model: 110 - 240 V, 50/60 Hz
AUS model: 240 V, 50 Hz
Tourist, E33 model: 100 - 240 V, 50/60 Hz
Hong Kong model: 220 V, 50/60 Hz
Chinese model: 220 V, 50 Hz
• Sony CPM-300P mount plate for use on car
battery : 4.5V DC
Dimensions (w/h/d) (without projecting parts and
controls)
Approx. 129 x 28.1 x 146 mm
( 51/8 x 11/8x 53/4 in.)
Mass (without rechargeable battery)
Approx. 220 g (7.8 oz)
Operating temperature
5°C - 35°C (41°F - 95°F)
Supplied accessories
For the area code of the model you purchased,
check the upper left side of the bar code on the
package.
D- 180AN/180ANC
Earphones (1)
D-181/181C
AC power adaptor (1)
Earphones (1)
Connecting cord (Phono plug x 2˜stereo
miniplug) (1)
AC plug adaptor (1)*
*Supplied with E33, E13 and EA models
D-181V
AC power adaptor (1)
Earphones with volume control (1)
Connecting cord (Phono plug x 2˜stereo
miniplug) (1)
D-183
AC power adaptor (1)
Earphones (1)
Rechargeable battery (1)
Connecting cord (Phono plug x 2 ˜stereo
miniplug) (1)
AC plug adaptor (1)*
*Supplied with E33, E13 and EA models
D-182CK
AC power adaptor (1)
Earphones (1)
Connecting cord (Phono plug x 2 ˜stereo
miniplug) (1)*1
Car battery cord (1)
Car connecting pack (1)
Mount plate (1)
Velcro tape (2)
Spare fuse (1)
Spiral tube (1)
AC plug adaptor (1)*2
*1Not supplied with AEP model
*2Supplied with E33, E13 and EA models
Design and specifications are subject to
change without notice.
Photo : D-181
Canadian Model
D-181/182CK/183
AEP Model
D-180AN/180ANC/181/
181C/181V/182CK/183
UK Model
D-181/183
E Model
D-180AN/181/181C/182CK/183
Australian Model
D-181/182CK/183
Chinese Model
D-180AN/181/182CK/183

– 2 –
Specifications ........................................................................... 1
1. SERVICING NOTES.................................................... 2
2. GENERAL ....................................................................... 4
3. DISASSEMBLY
3-1. Lid Assy, Upper Removal........................................... 5
3-2. Cabinet (Front) Assy, MD Assy Removal .................. 5
3-3. Main Board Removal ................................................. 6
4. SERVICE MODE.....................................................7
5. ADJUSTMENTS ........................................................... 8
6. DIAGRAMS
6-1. Explanation of IC Terminals......................................11
6-2. Block Diagram.......................................................... 13
6-3. Printed Wiring Boards .............................................. 16
6-4. Schematic Diagram................................................... 19
7. EXPLODEDVIEWS
7-1. Cabinet Section......................................................... 28
7-2. Optical Pick-up Section ............................................ 29
8. ELECTRICAL PARTS LIST.................................... 30
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR 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.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK !OR DOTTED LINEWITH
MARK !ON THE SCHEMATIC DIAGRAMS AND INTHE PARTS
LIST ARE CRITICALTO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN INTHIS MANUAL 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 damaged
by heat.
TABLE OF CONTENTS
This Compact Disc player is
classified as a CLASS 1 LASER
product.
The CLASS 1 LASER
PRODUCT label is located on the
bottom exterior.
CAUTION
Use of controls or adjustments or performance of procedures other than
those specified herein may result in hazardous radiation exposure.
DANGER
Invisible laser radiation when open and interlock failed or defeated.
Avoid direct exposure to beam.
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, observe from more
than 30cm away from the objective lens.
Before Replacing the Optical pick-up Block
Please be sure to check thoroughly the parameters as per the “Optical
pick-up Block Checking Procedure” (Part No. : 9-960-027-11) issued
separately before replacing the optical Pick-up block.
Note and specifications required to check are given below.
• FOK output : IC501 !™ pin
When checking FOK, remove the lead wire to disc motor.
• S curve P-to-P value : 1.2±0.3Vp-p IC501 #¡ pin. (Connect pin !™ of
IC501 (TP880) and 3of IC501 (GND) with a jumper wire).
When checking S curve P-to-P value, remove the lead wire to disc
motor.
• Adjusted part for focus gain adjustment : RV503
• RF signal P-to-P value : 0.8 – 1.2Vp-p
• Traverse signal P-to-P value : 1.0 – 2.4Vp-p
• The repairing grating holder is impossible.
• Adjusted part for tracking gain adjustment : RV502
SECTION 1
SERVICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR
BASE UNIT

– 3 –
Precautions for Checking Emission of Laser Diode
Laser light of the equipment is focused by the object lens in the optical
pick-up so that the light focuses on the reflection surface of the disc.
Therefore, be sure to keep your eyes more then 30cm apart from the
object lens when you check the emission of laser diode.
Laser Diode Checking Methods
During normal operation of the equipment, emission of the laser diode
is prohibited unless the upper panel is closed while turning ON the S801
(push switch type).
The following two checking methods for the laser diode are operable.
Method-1 (In the service mode or normal operation) :
Emission of the laser diode is visually checked.
1. Open the upper lid.
2. Push the S801 as shown in Fig. 1 .
3. Check the object lens for confirming normal emission of the laser
diode. If not emitting, there is a trouble in the automatic power
control circuit or the optical pick-up. During normal operation, the
laser diode is turned ON about 2.5 seconds for focus searching.
Fig. 2 DigitalVoltmeter Connecting Location
Method-2 (In the service mode or normal operation) :
Check the value of current flowing in the laser diode.
1. Remove the upper panel.
2. Read the current printed on the rear side of the optical pick-up.
(Print on the rear side of the optical pick-up)
Fig.1 Method to push S801
AC2211397 year
version
month
A : less than 48 mA
current value
date
line No.
shift No.
3. Connect a level meter as shown in Fig. 2
4. Press the ^key.
5. Calculate the current value by the reading of the digital voltmeter
Reading of the tester (V) ÷ 4.7 ( Ω) = current value (A)
(Example) Reading of the digital voltmeter of 0.2256V :
0.2256 V ÷ 4.7 Ω= 0.048 (A) = 48 mA
6. Check that the current value is within the following range.
+5
• Current value of the label -11 mA(25°C)
Variation by temperature : 0.4mA / °C
Current increases with temperature increased.
Current decreases with temperature decreased.
If the current is more than the range above, there is a trouble in the
automatic power control circuit or the laser diode is in deterioration.
If less than the range, a trouble exists in the automatic power control
circuit or the optical pick-up.
[MAIN BOARD] (Conductor side)
S801
IC501
TP506
TP547
TP506
digital voltmeter
TP547

– 4 –
SECTION 2
GENERAL
LOCATION AND FUNCTION OF CONTROLS
Volume control MDR-ED136V (D-181V)
1OPEN button
2DC IN 4.5V jack
3PLAY MODE button
4+FF button
5LINE OUT jack
6pSTOP button
7^Play/pause button
8RESUME switch
123 456 7
890!¡!™!£!¢!∞!§
p ^
92headphone jack
0AVLS switch
!¡ VOLUME control
!™ Sound switch
!£ =FR button
!¢ Information display panel
!∞ REPEAT/ENTER button
!§ HOLD switch
Volume
Adjust the Volume.

– 5 –
SECTION 3
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
3-1. LID ASSY, UPPER REMOVAL
3-2. CABINET (FRONT) ASSY, MD ASSY REMOVAL
Lid assy, Upper
r
The equipment can be removed using the following procedure.
Set
Cabinet (Front) assy MD assy Main board
Lid assy, Upper
2
1 OPEN
1 Screws (1.4x2.5)
1 Screws
(1.4x2.5)
!º CN501
4 Claw
4 Claw
8 CN702
7 CN701
9 CN703
6
5
3
2
MD assy
Cabinet (Front) assy
Cabinet (Front) assy
Cabinet (Rear)
assy
Claw

– 6 –
3-3. MAIN BOARD REMOVAL
1
Main board
S804
S804
Knob (HOLD)
Knob (RESUME
)
Cabinet (Rear)
S803
S803
To install, position the knob
and the switch respectively.
Sometime the HOLD switch
(S804) and RESUME switch
(S803) will be broken.

– 7 –
SECTION 4
SERVICE MODE
• Step 3 (Resetting service mode )
1. Be sure to disconnect the external power supply and remove the
solder bridge at the TEST terminals connected in setting.
2. The set thus becomes available for normal operation.
– MAIN BOARD – (Side A)
Fig. 4 Location of test terminal
Service Mode (service program)
The equipment is provided with a service program built in the mi-
crocomputer, like conventional models.
Service program operation methods are described in the following.
Fig. 3 Layout of each key
• Step 1 (Service mode setting method)
1. Turn OFF the HOLD switch the external power supply discon-
nected (power is not applied to the set).
2. Solder across the T802 (TEST) terminals (pin %™, IC801 (TEST)
is grounded).
3. Connect an external power supply.
Thus, the set is switched to the service mode.
• Step 2 (Operation in the service mode )
1. Once the service mode is effected, the LCD displays 5 indica-
tions each of which is repeatedly displayed.
However, the following operations can be activated even if LCD
indication is effected.
2. By pressing the +or =key, the optical pick-up movable
inwardly or outwardly. However, if this is activated, tracking
servo and sled servo are turned OFF, so it can be turned ON by
pressing the PLAY MODE key, if required.
3. By pressing the REPEAT/ENTERkey,thetracking gain-upmode
becomes active.
4. By pressing the ^key, focus is turned ON from focus search-
ing while entering CLV-S (pull-in mode).
Without disc, focus searching is repeated continuously.
5. By pressing the PLAY MODE key, tracking servo, sled servo
and CLV-A (servo in PLAY) are turned ON.
6. When 4. and 5. are performed, playing begins. No muting is ON
in the service mode.
7. By pressing the pkey, all servos (focus tracking and sled) are
turned OFF. However, the disc motor revolves for a while by
inertia.
Q302
IC301
T802
(TEST)
T802 (TEST)
Normal mode : Open
Test mode : Short
HOLD OFF n ON
Be sure to turn OFF the HOLD switch
(if ON, pressing each key is deactivated)
REPEAT/ENTER
Tracking gain-up mode while pressing
= (FR)
The optical pick-up
is moved inwardly
+ (FF)
The optical pick-up
is moved outwardly
p (STOP)
All servos are turned OFF
^ (PLAY/PAUSE)
FOCUS is turned ON
to effect pull in mode
PLAY MODE
Tracking servo and sled
servo are turned ON
p ^

– 8 –
Focus Bias Check
Condition :
• Hold the set in horizontal state.
Procedure :
[MAIN BOARD] (Side B)
1. Set the equipment to service mode stop state (See page 7).
2. Connect the oscilloscope between IC501 @£ pin (RF0) and #º
pin (VC) on the MAIN board.
3. Move the optical pick-up by Pressing the +and =keys.
4 Put the disc (YEDS-18).
5. Press the ^key.
From focus searching, focus is turned ON while entering
CLV drawing-in mode. Tracking and sled are turned OFF.
6. Press the PLAY MODE key. (Both tracking and sled are turned
ON).
7. Check the oscilloscope waveform is as shown below.
A good eye pattern means that the diamond shape (◊) in the cen-
ter of the waveform can be clearly distinguished.
• RF Signal Reference Waveform (eye pattern)
To watch the eye pattern, set the oscilloscope to AC range and
increasetheverticalsensitivityoftheoscilloscopeforeasywatch-
ing.
8. Stop removing of the motor by pressing the pkey.
9. After the completion of adjustment, reset service mode.
(See page 7 )
SECTION 5
ADJUSTMENTS
( )
CD SECTION
Precautions for Adjustment
1. Before beginning adjustment, set the equipment to service mode.
After the completion of adjustment, be sure to reset the service
mode.
For more information, see “Service Mode (service program)”
on page 7.
2. Perform adjustments in the order given.
3. Use the disc (YEDS-18. Part No. 3-702-101-01) unless other-
wise indicated.
4. Power supply voltage requirement : DC 4.5 V
HOLD switch : OFF
VOLUME : Minimum
BASS BOOST switch : NORM
AVLS switch : OFF
Before Beginning Adjustment
Set the equipment to service mode (See page 7) and check the fol-
lowing.
If there in an error, repair the equipment.
• Checking of the sled motor
1. Open the upper panel.
2. Press the +and =keys and check that the optical pick-up
can move smoothly without sluggishness or abnormal noise in
innermost periphery n outermost periphery n innermost periph-
ery
+: The optical pick-up moves outwardly
=: The optical pick-up moves inwardly
• Checking of focus searching
1. Open the upper panel.
2. Press the ^key. (Focus searching operation is activated con-
tinuously).
3. Check the object lens of the optical pick-up for smooth up/down
motion without sluggishness or abnormal noise.
4. Press the pkey.
Check that focus searching operation is deactivated. If not, again
press the pkey slightly longer.
IC501
30
23
IC501 @£ pin
(RF0)
IC501
#º pin
(VC)
2 k
Ω
oscilloscope
(AC range)
RF level
1.0
± 0.2
V

– 9 –
1. Place the optical pick-up level, horizontally. (If the optical pick-
up is not level, the 2-axis device will be weighted and adjust-
ment cannot be done.)
2. Connect the oscilloscope between IC501 0pin (TEO) and #º
pin (VC) on the MAIN board.
3. Set the disc (YEDS-18) and Press the ^(+) key.
4. Turn RV502 slightly clockwise (tracking gain drops) and obtain
a waveform with a fundamental wave (waveform has large
waves) as in Figure 1 .
5. Turn RV502 slowly counterclockwise (tracking gain rises) until
the fundamental wave disappears (no large waves) as in Figure
2.
6. Set RV502 to the position about 30 °counterclockwise from the
position obtained in step 5. If RV502 contact point is more than
90 ° counterclockwise from mechanical center, tracking gain is
too high. In this case, readjust from step 4.
7. Press ^(+) or =keys and observe the 100 track jump
waveform. Check that no traverse waveform appears for both
^(+) or =directions. (See Figures 3 and 4.) It is ac-
ceptable if the traverse waveform appears only now and then,
but if it appears constantly raise tracking gain slightly and check
step 7 again.
8. Checkthatthereisnoabnormalamountofoperationnoise (white
noise) from the 2-axis device. If there is, tracking gain is too
high, readjust starting with step 4.
The waveforms are those measured with the oscilloscope set as
shown below.
• VOLT/DIV : 50mV
• TIME/DIV : 5mS
• Waveform when tracking gain lowered.
Fundamental wave appears (large waves).
Fig. 1
• Waveform when fundamental wave disappears (no large waves).
Fig. 2
• Waveform when no traverse waveform during 100 track jump.
(Brake application is smooth because of adjustment.)
Fig. 3
• Waveform when no traverse waveform during 100 track jump.
(Brake application is poor because of adjustment.)
Fig. 4
0
V
0
V
0
V
100 track jump waveform
0
V
100 track jump
waveform traverse waveform
10 30
IC501
oscilloscope
(DC range)
IC501
0 pin
(TEO)
IC501
#º pin
(VC)
Focus/Tracking Gain Adjustment
A servo analyzer is necessary in order to perform this adjustment
exactly.
However, this gain has a margin, so even if it is slightly off, there is
no problem. Therefore, do not perform this adjustment.
Focus/tracking gain determines the pick-up follow-up relative to
mechanical noise and mechanical shock when the 2-axis device
operate. However, as these reciprocate, the adjustment is at the point
where both are satisfied.
• When gain is raised, the noise when 2-axis device operates in-
creases.
• When gain is lowered, it is more susceptible to mechanical shock
and skipping occurs more easily.
This adjustment has to be performed upon replacing any of the fol-
lowing parts :
• Optical pick-up
• RV503 (Focus gain)
• RV502 (Tracking gain)
Normally, be surenottomoveRV503 (focusgain)andRV502 (track-
ing gain).
– Focus GainAdjustment –
Procedure :
This adjustment is not performed. If focus gain RV503 is turned,
set to mechanical center
– Tracking Gain Adjustment –
(perform at normal operation)
[MAIN BOARD] (Side B)

– 10 –
Adjustment Location :
MAIN BOARD] (Side A)
CN501
RV503 : Focus Gain Adjustment
RV502 :Tracking Gain Adjustment

– 11 –
Pin No. Pin name I/O Description
1 – 3 SEG 12–14 O LCD segment signal output terminal.
4 FP26 – Not used (Open).
5 XRST– DSP O Reset output terminal.
6 AMUTE – HP O Audio mute output terminal.
7 DRV – MUTE – DRV O Mute drive output.
8 ESPON–PWR – Not used (Open).
9 DACLT–DAC I/O CPU serial data input, latch signal output (For DAC only).
10 C2POEN – Not used (Open).
11 TEOADJ – TEO O Tracking ADJ switch control output.
12 RMDAT–WRMT – Not used (Open).
13 VLCD (GND) – Connect to ground.
14 VSS (GND) – Connect to ground.
15 NDLY (GND) – Connect to ground.
16 CHGON – PWR O Charge ON/OFF control output.
17 PCON–PWR O Power ON/OFF control output. “ L ” : ON “ H ” : OFF
18 XMCRST–PWR I System reset input terminal.
19 OSC 1 I System clock oscillator input terminal (4.1943 MHz).
20 OSC 2 O System clock oscillator output terminal (4.1943 MHz).
21 SDT–ESP – Not used (Open).
22 SDT–ESP – Not used (Open).
23 SCK–ESP – Not used (Open).
24 XBBSW – DBB O DBB switch control output.
25 XLT–ESP O Latch signal output to ESP control (IC601).
26 HOLD–SW I Hold switch input terminal. “ L ” : HOLD ON “ H ” : HOLD OFF
27 XLMT–MD I Limit switch input terminal. “ L ” : Inside Track
28 XRSM–SW I RESUME switch input terminal. “ L ” : ON “ H ” : OFF
29 WP XDC–DT PWR I DC in voltage detection terminal.
30 WP XOPEN–SW I Door open switch input terminal. “ L ” : Close “ H ” : Open
31 WP XPLAY–SW I Play/pause key input terminal.
32 WP RMKEY WRMT – Not used (Open).
33 XL/O DCT I LINE OUT jack detection terminal. “ L ” : Present “ H ” : No
34 XRCHG–SW I Rechargeable battery detection terminal. “ L ” : Present “ H ” : No
35 XAVLS–SW I AVLS switch input terminal.
36 R/W DSP O Read/Write switching signal output terminal. “ L ” : Read “ H ” : Write
37 SDT–DSP I SUB–Q signal input terminal.
38 SDT–DSP O Serial data output to DSP (IC502) and D/A converter (IC301).
39 SCK–DSP O Clock signal to enter SUB–Q signal to DSP (IC502) and D/A converter (IC301).
40 FOK–RF I FOK signal input terminal.
SECTION 6
DIAGRAMS
6-1. EXPLANATION OF ICTERMINALS
IC801 MC68HC05L15SC442712CPB (SYSTEM CONTROL)

– 12 –
Pin No. Pin name I/O Description
41 BUSY–DSP I BUSY signal input terminal from DSP (IC502).
42 BEEP–HP O Beep sound output terminal.
43 INT SCOR–DSP I Sub code sync SO+SI input terminal.
44 INT RMC–WLRMT I Wireless remote control signal input.
45 VDD (VCPU) – Power supply terminal.
46 – 49 COM 3–0 O LCD common signal output terminal.
50 VREFH I Reference voltage input terminal (connect to VDD).
51 VREFL – Connect to ground.
52 AD ESPSL/TEST I Test mode terminal. “ L ” : Test mode “ H ” : Nomal mode
53 AD–KEY I A/D input terminal for main unit key.
54 AD–WRMT – Connect to ground.
55 AD–HI DC I A/D input terminal for DC IN voltage detection.
56 AD – BAT I Rechargeable battery/dry cell detection input.
57 AD – CHG I A/D input terminal for charging voltage monitor.
58 AD – VCC I A/D input terminal for VCC voltage monitor.
59 AD – DSP OFFSET I A/D input terminal for DSP off-set monitor.
60 FP10 – Not used (Open).
61 – 72 SEG 0 – 11 O LCD segment signal output terminal.

rWAVEFORMS
5
IC301 !§
2.6 Vp-
p
16.9 MHz
VOLT/DIV : 1 V AC
TIME/DIV : 50nsec
6
IC801 @º
3.0 Vp-
p
4.19MHz
VOLT/DIV : 1 V AC
TIME/DIV : 0.2msec
7
IC501 @£
1.0 ± 0.2 Vp-p
VOLT/DIV : 0.2 V AC
TIME/DIV : 0.5msec
PLAY MODE
4
IC502 &º
2.5 Vp-
p
0.47 µ sec
ESP : OFF
VOLT/DIV : 1 V AC
TIME/DIV : 0.2msec
3
IC502 ^•
2.9 Vp-p
22.7
µ sec
ESP : OFF
VOLT/DIV : 1 V AC
TIME/DIV : 10msec
2
IC502 #§
2.9 Vp-p
136
µ sec
ESP : OFF
VOLT/DIV : 1 V AC
TIME/DIV : 50µsec
1
IC502 &ª
SERVICE MODE
during TRK servo OFF
VOLT/DIV : 1 V AC
TIME/DIV : 0.1msec
2.4Vp-p
4.2MHz
– 22 –

rIC BLOCK DIAGRAMS
IC401 MPC18A26VMEL
+
–
21
22
23
24
25
26
27
28
29
30
2
3
5
4
6
7
8
9
10
1
11
12
13
14
15
16
17
18 19
20
31
32
33
34
35
36
DC IN DETECT
LOW VCPU
DETECT
VCPU
SAWTOOTH
REGUL ATOR
CHARGE SW
CHARGE
AMP
VG
ERROR AMP
PWM2
PWM1
ERROR
AMP
SET-UP
DC/DC
CONVERTER
PWM4
OSC2
SYSTEM
CONTROL
SUB
REFERENCE
BANDGAP
REFERENCE
VG
VG
VG
VG
RS
DCDT
RF2
INM2
INP2
DTC3
RF1
INM1
INP1
CMP1
DTC1
VREF
SWEN
RSTB
CKOUT
SYNC
PCON
CHGON
INM3
RF3
DCIN
CHGSW
BATM
CHGOUT
VIN
VOUT2
NC
VOUT1B
VOUT1
UPCK1B
UPCK1
VG
VDO
SW
VCPU
GND
IC301 TC9438FNEL
21
222324
235
4678910
111 12
13
14
15
16
17
1819
20
DATA
INTERFASE
CIRCUIT
MICRO COMPUTER
INTERFASE
CIRCUIT OSC
TIMING
GENERATOR
TEST
CIRCUIT
OUTPUT
CIRCUIT OUTPUT
CIRCUIT
ANALOG
FILTER
ANALOG
FILTER
DINAMIC
BASS BOOST
CIRCUIT
DIGITAL FILTER CIRCUIT
DEEMPHASIS FILTER CIRCUIT
ATTENUATER OPERATIONAL CIRCUIT
Σ-∆MODULATION CIRCUIT
LRCK BCLK DATA DBB SDATA SHCK DACLT XVDD XTLO XTLI XGND CKO
DVDD
TEST
SPLS
AVDD
RO
AGND
VREF
AGND
LO
AVDD
µUTE-0
DGND
– 24 –

IC502 BU9325KS
21 22 23 24 25 26 27 28 29 30
2
3
5
4
6
7
8
9
10
1
11
12
13
14
15
16
17
18
19
20
31 32 33 34 35 36 37 38 39 40
51
52
53
54
55
56
57
58
59
60
61626364656667686970
41
42
43
44
45
46
47
48
49
50
71727374757677787980
OFFSET
AD JO
TIMING
GENERATOR INTERPOLATION ERROR
CORRECTION
EFM
WINDOW
TRACK
JUMP
PLL
FOCUS
FILTER
TRACKING
FILTER
FILTER
CONTROL
SLED CLV SERVO
16K SRAM
MICRO
COMPUTER
INTERFACE
SUB CODE
AVDD
ASY
EY E
FCO
PCO
PLLSW
VC
ADPF I
ADPF O
AGND
RVCO
FOK
FEIN
FCAPA
FON
TEIN
ATSC
AZC
TCAPA 1
TCAPA 2
FED
TED
COMP XPCK SENS DVDD GFS NC XIN RESET DGND CLK BCLK DATA LRCK WDCK C2PO C2CLK C1F1 C1F2 C2F1 C2F2
C1FX
C2FX
C2F3
C2F4
GAINUP
176KHZ
BUSY
RW
SUBQ
CDATA
SQCLK
SLD IN
SLD
CLVOUT
CLVP
FSW
CLVOP + CLVOP –
CLV OPO
MUTE 1 MUTE 2
DEFECT
MIRROR
DGND
RFCK
WFCK
SCOR
SUB DATA
SUBCK
– 25 –

IC501 BA6386K
21222324
25
26
27
28
29
30
235
4678
9
10
1
11
12
13
14
15
16
17
181920
31
32
DET BLOCK
HOLD BLOCK
LOOP ON
FOCUS
SWITCH BAMP
OSC
SCRATCH
CONTROL
FOCUS BIAS
PS PL BL BS
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
C
BEFM
MIRR
DEFECT
FOK
FON
TEO
DFR
FEO
D
A
FBIAS
VC
FE
EI
E
F
GND
CAGC
CAPC
LD
PD
SROCH
RF– RFO RFI VCC PLH BLH RAGC ASY
– 26 –

IC701 MPC17A51VMEL
LOW VOLTAGE
DETECTOR
CHAGE
PUMP
SAW
GEN
ERR 1
C2H
C1H
C1L
C2L
VCG
VIN34
VIN34
OUT 3 A
PGND3
OUT 3 B
OUT 4 B
PGND4
OUT 4 A
VIN34
CF4
CLV
TED
CF3
AGND
C11
VR
OE
SAWTOOTH
PSB
OUT 1 A
OUT 1 B
ERR 2
OUT 2 B
VR
VR
OE
OE
SAWTOOTH
SAWTOOTH
PSB
PSB
VR
OE
SAWTOOTH
PSB
OUT 2 A
OUT 4 B
C14
ERR 4
OUT 4 A
OUT 3 A
OUT 3 B
ER R3
C 13
C 12
MOTOR DRIVER
CH 1
MOTOR DRIVER
CH 2
MOTOR DRIVER
CH 3
MOTOR DRIVER
CH 4
VLG VG
VLG
VG
VCG
VIN12
VLG VG VIN12
VLG VG VIN34
VLG VG VIN34
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
VG
DGND
CLK
OE
VCC VIN12
VIN12
OUT 1 A
PGND1
OUT 1 B
OUT 2 B
PGND2
OUT 2 A
VIN12
CF2
SLD
FED
CF1
VC
– 27 –

SECTION 7
EXPLODED VIEWS
NOTE :
• -XX, -X mean standardized parts, so they
may have some difference from the original
one.
• Color indication of Appearance Parts
Example :
KNOB, BALANCE (WHITE) ••• (RED)
↑↑
Parts color Cabinet's color
• Items marked “ * ”are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
• The mechanical parts with no reference
number in the exploded views are not
supplied.
• Accessories and packing materials are given
in the last of this parts list.
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
7-1. CABINET SECTION
• Abbreviation
CND : Canadian FR : French
AUS : Australian KR : Korean
EA : Saudi Arabia CH : Chinese
EE : East European
Les composants identifiés par une
marque!sont critiques pour la sécurité.
Ne les remplacer que par une pièce
portant le numéro spécifié.
The components identified by mark !
or dotted line with mark !are critical
for safety.
Replaceonlywith partnumberspecified.
1 4-972-866-01 SPRING (DETECTOR)
2 4-972-780-01 DETECTOR
3 X-4949-492-1 CABINET (FRONT) SUB ASSY
4 4-994-981-01 SPRING, TORSION
5 X-4949-459-1 LID ASSY, UPPER (GRAY) (180AN/180ANC)
5 X-4949-460-1 LID ASSY, UPPER (BLUE) (180AN:AEP)
5 X-4949-462-1 LID ASSY, UPPER (GRAY) (181V)
5 X-4949-463-1 LID ASSY, UPPER (BLUE) (181V)
5 X-4949-464-1 LID ASSY, UPPER (GRAY) (181/181C)
5 X-4949-465-1 LID ASSY, UPPER (BLUE)
(181 : EXCEPT EE,E33,EA,CH,KR)
5 X-4949-466-1 LID ASSY, UPPER (GREEN)
(181 : CND,AEP,UK,FR,AUS)
5 X-4949-467-1 LID ASSY, UPPER (ORANGE)
(181 : CND,AEP,UK,FR,AUS)
5 X-4949-470-1 LID ASSY, UPPER (GRAY) (182CK)
5 X-4949-472-1 LID ASSY, UPPER (GRAY) (183)
6 4-994-975-01 HOLDER (LCD)
7 4-978-695-01 PLATE, TERMINAL, BATTERY
8 4-990-219-01 INSULATOR
9 A-3293-811-A MAIN BOARD, COMPLETE (EXCEPT FR)
9 A-3293-887-A MAIN BOARD, COMPLETE (FR)
10 4-997-109-01 PLATE (BATTERY TERMINAL), LINK
11 4-994-972-01 LID, BATTERY CASE
12 X-4949-498-1 CABINET (REAR) SUB ASSY
13 3-336-395-01 SCREW (B2X10) (G), TAPPING
14 4-984-751-01 KNOB (AVLS)
15 4-966-278-01 FOOT, RUBBER
LCD801 1-803-017-11 DISPLAY PANEL, LIQUID CRYSTAL
LCD801
CDM-2811AA
A
1
2
3
4
5
6
78
8
8
9
10
11
12
13
13 14
15
– 28 –

– 29 –
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
51 A-3303-970-A SCREW ASSY, FEED
52 3-318-203-11 SCREW (B1.7X6), TAPPING
53 1-690-530-81 LEAD (WITH CONNECTOR)
54 4-972-163-04 SPRING, SLED
55 4-974-003-01 GEAR (B)
56 3-719-401-11 SCREW (B1.7), TAPPING
*57 4-984-320-01 CHASSIS
58 1-660-965-11 SLIDE FLEXIBLE BOARD
!59 X-4946-311-1 OPTICAL PICK-UP (DAX-01A)
60 4-972-165-01 RACK
61 4-973-631-01 SCREW
62 7-627-850-17 SCREW,PRECISION +P 1.4X2.5
M901 A-3303-403-A MOTOR ASSY, SLED
M902 A-3303-971-A MOTOR ASSY, TURNTABLE (SPINDLE)
S901 1-571-099-21 SWITCH (1 KEY) (LIMIT)
7-2. OPTICAL PICK-UP SECTION
The components identified by
mark !or dotted line with mark
!are critical for safety.
Replace only with part number
specified.
Les composants identifiés par une
marque !sont critiques pour
la sécurité.
Ne les remplacer que par une pièce
portant le numéro spécifié.
M901
S901
M902
51 52
62
53
54
55
56
57
58
59
60
61

– 30 –
NOTE :
• Due to standardization, replacements in the
parts list may be different from the parts
specified in the diagrams or the components
used on the set.
• -XX, -X mean standardized parts, so they
may have some difference from the original
one.
• RESISTORS
All resistors are in ohms
METAL : Metal-film resistor
METAL OXIDE :Metal oxide-film resistor
F : nonflammable
• Items marked “ * ”are not stocked since
they are seldom required for routine service.
Some delay should be anticipated when
ordering these items.
• SEMICONDUCTORS
In each case, u : µ, for example :
uA.... : µA.... , uPA.... : µPA....
uPB.... : µPB.... , uPC.... : µPC....
uPD.... : µPD....
• CAPACITORS
uF : µF
• COILS
uH : µH
• Abbreviation
CND : Canadian FR : French
AUS : Australian MX : Mexican
EA : Saudi Arabia CH : Chinese
EE : East European KR : Korean
C&SA : Central and SouthAmerica
E13 : AC 220-230V area model
E33 : AC 100-240V area model
Les composants identifiés par une
marque !sont critiques pour la sécurité.
Ne les remplacer que par une pièce
portant le numéro spécifié.
When indicating parts by reference num-
ber, please include the board.
The components identified by mark !
or dotted line with mark !are critical
for safety.
Replaceonlywith partnumberspecified.
SECTION 8
ELECTRICAL PARTS LIST
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
A-3293-811-A MAIN BOARD, COMPLETE (EXCEPT FR)
A-3293-887-A MAIN BOARD, COMPLETE (FR)
*********************
4-994-975-01 HOLDER (LCD)
4-978-695-01 PLATE, TERMINAL, BATTERY
< CAPACITOR >
C101 1-126-794-11 ELECT 4.7uF 20% 50V
C102 1-164-360-11 CERAMIC CHIP 0.1uF 16V
C103 1-115-156-11 CERAMIC CHIP 1uF 10V
C104 1-162-953-11 CERAMIC CHIP 100PF 5% 50V
C105 1-162-953-11 CERAMIC CHIP 100PF 5% 50V
C108 1-162-968-11 CERAMIC CHIP 0.0047uF 10% 50V
C201 1-126-794-11 ELECT 4.7uF 20% 50V
C202 1-164-360-11 CERAMIC CHIP 0.1uF 16V
C203 1-115-156-11 CERAMIC CHIP 1uF 10V
C204 1-162-953-11 CERAMIC CHIP 100PF 5% 50V
C205 1-162-953-11 CERAMIC CHIP 100PF 5% 50V
C208 1-162-968-11 CERAMIC CHIP 0.0047uF 10% 50V
C302 1-164-360-11 CERAMIC CHIP 0.1uF 16V
C303 1-164-360-11 CERAMIC CHIP 0.1uF 16V
C304 1-124-635-00 ELECT 220uF 20% 6.3V
C305 1-124-584-00 ELECT 100uF 20% 4V
C306 1-162-968-11 CERAMIC CHIP 0.0047uF 10% 50V
C307 1-126-795-11 ELECT 10uF 20% 25V
C308 1-126-795-11 ELECT 10uF 20% 25V
C309 1-164-346-11 CERAMIC CHIP 1uF 16V
C310 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C312 1-128-057-11 ELECT CHIP 330uF 20% 6.3V
C313 1-164-505-11 CERAMIC CHIP 2.2uF 16V
C314 1-115-156-11 CERAMIC CHIP 1uF 10V
C315 1-126-514-11 ELECT 22uF 20% 10V
C316 1-115-156-11 CERAMIC CHIP 1uF 10V
C317 1-115-156-11 CERAMIC CHIP 1uF 10V
C323 1-164-360-11 CERAMIC CHIP 0.1uF 16V
C324 1-162-953-11 CERAMIC CHIP 100PF 5% 50V
C326 1-115-467-11 CERAMIC CHIP 0.22uF 10% 10V
C335 1-162-919-11 CERAMIC CHIP 22PF 5% 50V
C401 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C402 1-126-785-11 ELECT 47uF 20% 10V
C403 1-127-485-00 ELECT 33uF 20% 6.3V
C404 1-162-923-11 CERAMIC CHIP 47PF 5% 50V
MAIN
C405 1-164-004-11 CERAMIC CHIP 0.1uF 10% 25V
C406 1-164-360-11 CERAMIC CHIP 0.1uF 16V
C407 1-115-156-11 CERAMIC CHIP 1uF 10V
C408 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
C410 1-164-360-11 CERAMIC CHIP 0.1uF 16V
C411 1-164-360-11 CERAMIC CHIP 0.1uF 16V
C414 1-115-156-11 CERAMIC CHIP 1uF 10V
C415 1-135-201-11 TANTALUM CHIP 10uF 20% 4V
C417 1-104-852-11 TANTAL. CHIP 22uF 20% 6.3V
C420 1-164-360-11 CERAMIC CHIP 0.1uF 16V
C421 1-124-635-00 ELECT 220uF 20% 6.3V
C424 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
C425 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C426 1-162-953-11 CERAMIC CHIP 100PF 5% 50V
C427 1-104-852-11 TANTAL. CHIP 22uF 20% 6.3V
C428 1-115-156-11 CERAMIC CHIP 1uF 10V
C432 1-115-156-11 CERAMIC CHIP 1uF 10V
C437 1-115-156-11 CERAMIC CHIP 1uF 10V
C439 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C501 1-162-917-11 CERAMIC CHIP 15PF 5% 50V
C503 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C504 1-162-962-11 CERAMIC CHIP 470PF 10% 50V
C505 1-162-967-11 CERAMIC CHIP 0.0033uF 10% 50V
C506 1-115-565-11 CERAMIC CHIP 2.2uF 10% 10V
C509 1-164-360-11 CERAMIC CHIP 0.1uF 16V
C510 1-164-360-11 CERAMIC CHIP 0.1uF 16V
C511 1-164-360-11 CERAMIC CHIP 0.1uF 16V
C512 1-115-156-11 CERAMIC CHIP 1uF 10V
C513 1-165-176-11 CERAMIC CHIP 0.047uF 10% 16V
C514 1-162-953-11 CERAMIC CHIP 100PF 5% 50V
C515 1-162-962-11 CERAMIC CHIP 470PF 10% 50V
C516 1-164-360-11 CERAMIC CHIP 0.1uF 16V
C517 1-109-982-11 CERAMIC CHIP 1uF 10% 10V
C518 1-162-966-11 CERAMIC CHIP 0.0022uF 10% 50V
C519 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
C520 1-162-968-11 CERAMIC CHIP 0.0047uF 10% 50V
C521 1-162-968-11 CERAMIC CHIP 0.0047uF 10% 50V
C523 1-115-565-11 CERAMIC CHIP 2.2uF 10% 10V
C525 1-104-908-11 TANTAL. CHIP 47uF 20% 4V
C526 1-164-360-11 CERAMIC CHIP 0.1uF 16V