Sony CDP-CX50 User manual
— 1 —
SPECIFICATIONS
Model Name Using Similar Mechanism NEW
CD Mechanism Type CDM-46
Base Unit Type KSM-213BFN/M-NP
Optical Pick-up Type KSS-213B/S-N
SERVICE MANUAL
MICROFILM
CDP-CX50/CX571
Photo : CDP-CX50
US Model
Canadian Model
AEP Model
E Model
Australian Model
CDP-CX50/CX571
UK Model
CDP-CX571
COMPACT DISC PLAYER
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
— 2 —
TABLE OF CONTENTS
1. SERVICING NOTE .......................................................... 3
2. GENERAL .......................................................................... 4
3. DISASSEMBLY
3-1. Front Panel ........................................................................... 9
3-2. Illumination ASSY ................................................................ 9
3-3. Base Unit and Magnet Holder............................................. 10
3-4. CD Mechanism Section ...................................................... 11
4.TEST MODE ..................................................................... 12
5. MESHANICAL ADJUSTMENTS .............................. 15
6. ELECTRICAL ADJUSTMENTS ............................... 18
7. DIAGRAMS
7-1. Circuit Boards Location ...................................................... 20
7-2. Printed Wiring Board — BD Section —.............................21
7-3. Schematic Diagram — BD Section — ............................... 23
7-4. Printed Wiring Board — Main Section —.......................... 26
7-5. Schematic Diagram — Main Section — ............................29
7-6. Printed Wiring Board — Panel Section — ......................... 32
7-7. Schematic Diagram — Panel Section — ............................ 35
7-8. IC Pin Functions .................................................................38
7-9. IC Block Diagrams ............................................................. 44
8. EXPLODED VIEWS
8-1. Case Section........................................................................ 46
8-2. Front Panel Section ............................................................. 47
8-3. Chassis Section ................................................................... 48
8-4. Mechanism Deck Section 1 (CDM-46) .............................. 49
8-5. Mechanism Deck Section 2 (CDM-46) .............................. 50
8-6. Optical Pick-up Section (KSM-213 BFN/M-NP)............... 51
9. ELECTRICAL PARTS LIST ........................................ 52
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
The laser component in this product
is capable of emitting radiation
exceeding the limit for Class 1.
This appliance is classified as
a CLASS 1 LASER product.
The CLASS 1 LASER
PRODUCT MARKING is
located on the rear exterior.
This caution label
is located inside
the unit.
4-987-981-01
4-987-981-11
4-987-981-21
4-987-981-31
4-987-981-41
4-987-981-51
4-989-203-01
4-989-203-11
4-989-203-21
4-989-203-31
4-989-203-41
4-989-203-51
CX50 : US model
CX50 : Canadian model
CX50 : AEP, G model
CX50 : Australian model
CX50 : E model
CX50 : Singapore model
CX571 : US model
CX571 : Canadian model
CX571 : E model
CX571 : Singapore, Australian model
CX571 : AEP, G model
CX571 : UK model
PARTS No. MODEL
MODEL IDENTIFICATION
— BACK PANEL —
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
— 3 —
SAFETY CHECK-OUT
After correcting the original service problem, perform the follow-
ing safety checks before releasing the set to the customer:
Checkthe antenna terminals, metal trim, “metallized”knobs, screws,
and all other exposed metal parts forAC leakage. Check leakage as
described below.
LEAKAGE
The AC leakage from any exposed metal part to earth Ground and
from all exposed metal parts to any exposed metal part having a
returnto chassis, must not exceed 0.5 mA (500 microampers). Leak-
age current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of aVOM
or battery-operatedAC voltmeter. The “limit” indication is 0.75
V, so analog meters must have an accurate low-voltage scale.
The Simpson 250 and Sanwa SH-63Trd are examples of a pas-
sive VOM that is suitable. Nearly all battery operated digital
multimeters that have a 2V AC range are suitable. (See Fig. A)
Fig. A. Using an AC voltmeter to check AC leakage.
To Exposed Metal
Parts on Set
0.15
µ
F1.5k
Ω
AC
voltmeter
(0.75V)
Earth Ground
NOTES ON HANDLINGTHE 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.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
Carryout the “S curve check” in “CD section adjustment” andcheck
that the S curve waveform is output repeatedly.
SECTION 1
SERVICING NOTE
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
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!!
LESCOMPOSANTSIDENTIFIÉSPAR 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.
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
— 4 —
SECTION 2
GENERAL
LOCATION OF PARTS AND CONTROLS
Front Panel
1POWER switch
2Front cover
3CONTINUE button
4Display window
5SHUFFLE button
6PROGRAM button
7REPEAT button
8DISC/PUSH ENTER button
9CHECK button
!º CLEAR button
!¡ )±button
!™ ≠0button
!£ pbutton
!¢ Pbutton
!∞ ·button
!§ PLUS ONE button
21 87654
3
0
9
!§ !∞ !¢ !£ !™ !¡
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
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— 9 —
Note : Follow the disassembly procedure in the numerical order given.
3-1. FRONT PANEL
2
Two screws (BVTT3x6)
5
Screw
(BVTT3x6)
6
Reinforcement
7
Flat type wire
(11 core) AUDIO board: CN801
BD board: CN103
AUDIO board: CN803
8
Flat type wire
(9 core)
9
Connector (7P)
0
Three screws
(BVTT3x10)
!£
Front panel
3-2. ILLUMINATION ASSY
D
A
B
C
While pressing arrows
A
,
B
, and
C
,rotate theillumination assembly
in arrow direction
D
and remove it.
SECTION 3
DISASSEMBLY
3
Bracket
(ILLUMINATION)
4
Screw (BVTT3x6)
1
Screw (BVTT3x6)
!™
claw
Expand the front panel
in the direction of arrow
B
to release catching claws.
B
A
ILLUMINATION ASSY
!¡
claw
Expand the front panel
in the direction of arrow
A
to release catching claws.
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
— 10 —
3-3. BASE UNIT AND MAGNET HOLDER
2
Bracket
1
Two screws
(BTP2.6x8)
Remove in the arrow direction
while pressing the claw with a
screwdriver, etc.
Remove in the arrow direction
while pressing the claw with a
screwdriver, etc.
4
Magnet holder
0
Torsion spring (Holder)
9
BU holder
8
Tension coil spring (F-2)
6
Two screws
(PTPWH2.6x8)
7
Tension coil
spring (F-1)
5
Two screws
(PTPWH2.6x8)
3
Screw
(BTP2.6x10)
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
— 11 —
3-4. CD MECHANISM SECTION
NOTE:
Adjusttheposition of thegear
as shown in the figure when
attaching.
6
Slider (Lock)
7
Slider (Cam)
0
Slider
(Loading)
4
Cam cover
3
Screw
(BTP2.6x8)
1
Screw
(BTP2.6x8)
2
SW board
9
Torsion spring
(Loading)
8
Disc holder
(A)
!™
Loading lever ASSY
!¡
Tension coil spring (Lever)
!∞
Disc holder
(B)
5
Screw
(BTP2.6x8)
!£
Screw
(BTP2.6x8)
!¢
Cover
(Lever)
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
— 12 —
SECTION 4
TEST MODE
DISPLAY CHECK MODE
NOTE:
This will not work properly if the DISC is set to any slit.
1. Press the POWER button, turn ON the power, and set a CD in
any slit.
2. Press the POWER button, and turn OFF the power.
3. While pressing the CHECK and PLUS ONE buttons together
with the power OFF, press the POWER button and turn ON the
power.
4. All the segments of the fluorescent indicator tube light up, and
the ·, P, and PLUS ONE LEDs light up.
5. To exit the display check mode, press the POWER button or p
button.
ADJ MODE
1. Press the POWER button to turn the power ON.
2. Open the front cover, and press the PLUS ONE button.
3. Set the disc (YEDS-18 : 3-702-101-01) in the PLUS ONE slit.
4. Close the front cover, and chuck the disc.
5. Press the POWER button, and turn OFF the power.
6. ConnectTP(TP301:ADJ)of the DISPLAY board and the ground
with a lead wire.
7. Press the POWER button and turn ON the power.
The ADJ mode is set with the above.
Differences with normal mode
• No high speed search is performed during access
• Ignored even if GFS becomes L
• Ignored even if Q data cannot be read
• Spindle servo gain is set to 12 cm mode (Even with 8 cm disc)
The following special functions will work when certain functions
are pressed in this mode.
Special functions in ADJ mode
(The ( ) buttons function only with the general purpose remote.)
Button Function
(3)
(8)
CHECK
Tracking servo , sled servo OFF
Tracking servo, sled servo ON
S shape observation mode
FLUORESCENT INDICATOR TUBE, LED ALL LIT,
AND KEY CHECK MODE
ConnectTP(TP302:AFADJ) ofthe DISPLAY boardand the ground
with the power OFF and press the POWER button.
The fluorescent indicator tube and LEDs all light up.
When a button is pressed, the left side of the indicator tube will
show how many buttons have been pressed so far.
(However, buttons already pressed once will not be counted.)
The right side will show the numbers corresponding to the pressed
buttons.
[ DISPLAY BOARD ] — CONDUCTOR SIDE —
CNP804 IC801
TP301
(ADJ)
CNP801
Buttons and Corresponding Button Numbers
Button Button Number or Display
1
2
3
4
5
6
7
8 (The fluorescent indicator tube and LED near by
(D801) are lit while pressed.)
9 (The fluorescent indicator tube (segment check) is
partially lit and LED near by (D802) is lit while
pressed.)
10 (The fluorescent indicator tube is partially lit while
pressed (grid check).)
11
12
CONTINUE
SHUFFLE
PROGRAM
REPEAT
CHECK
CLEAR
PLUS ONE
·
P
p
≠0
)±
Count up Button number
05 12
TP302
(AFADJ)
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
— 13 —
Sequence of Aging Mode
$
$
$
$
$
$
$
$
$
Order of Disc Change
(1 cycle takes 3 minutes)
$
$
$
1. No. 51
2. No. 20
3. No. 40
4. No. 30
5. No. 10
6. N0. 40*
$
$
$
$
* DISC No. 40 chucks twice during one cycle.
To differentiate, the “8” on the block indicator of the fluores-
cent indicator tube will light up during the second chucking.
1. Disc change
2. Load in
3. TOC read
4. Access of last track
5. 3 second playback
6. Access of first track
7. 3 second playback
8. Load out
1. Grid check
PROGRAM REPEAT REMOTE
2. Segment check
1
2
--
-nn
Key Inputs Other than Buttons and How to Display
Key input Display
Rotate the JOG knob to
the right
Rotate the JOG knob to
the left
Press the JOG knob
(ENTER)
Door cover “Close”
Door cover “Open”
Fluorescent indicator tube block indicator
lights up in the order of 1 n2 n...8 n1.
Fluorescent indicator tube block indicator
lights up in the order of 8 n7 n... 1 n8.
Fluorescent indicator tube block indicator
goes OFF.
PLUS ONE LED lights up
PLUS ONE LED goes OFF
12345678
block indicator
AGING MODE
• Mode which repeatedly changes and plays back discs automati-
cally in the unit.
• It will repeat aging as long as no errors occur.
• If an error occurs during aging, it will stop all servos, motors, etc.
instantaneously, display the error number, and stop operations.
However, the stopping conditions differ according to whether the
unit is equipped with the “self-protection function during errors”
described later.
The function serves to maintain the state of the unit when errors
occur.
Special Functions inAging Mode
There are some useful function in the aging mode.
• Disc setting mode*1
• Switching of use/disuse of protection function in errors *2
• Aging cycle count function *3
*1 Disc setting mode:
5 discs are set before setting the aging mode. This mode makes
the setting of these discs more easy.
*2 Switching of use/disuse of protection function in errors:
Function which voluntarily corrects errors which occur during
normal operations by retries.
If this function is not provided, all operations will be stopped
without retiring. It is suitable for checking errors with low re-
producibility.
If this function is provided, and errors can be corrected by re-
tries, aging will be continued without stopping.
(The normal aging should be performed with “be”.)
*3 Aging cycle count function:
Functions which displays the number of agings carried out on
the Fluorescent indicator tube in numbers. One aging cycle con-
sists of six discs.
TRACK
1
DISC
51 MIN SEC
0.01 0.1
Disc number Track number Agings carried
(Hexadecimal)
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
— 14 —
Aging procedure:
Some operating method will be changed depending on if the fol-
lowing jig for the aging mode exists or not.
• Jig
Parts. No Description
J-2501-123-A Remote commander (For aging mode)
With remote commander for aging mode:
1. Turn ON the power of the unit. Open the front cover.
2. Press the AGING START button of the remote commander for
aging mode.
3. When the disc set mode is set, the ·and PLEDs blink.
4. Rotate the JOG dial.The slits (No. 10, 20, 30, 40, 51) for setting
the discs will come forward. Insert the discs into these slits. Do
not set the discs in other slits.
5. Set the use/disuse of the self protection function in errors. Press
the REPEAT button. When REPEAT is displayed on the fluo-
rescent indicator tube, the self protection function during the
error will become “Use”.
If the REPEAT display is OFF, it means that the function is not
used. (Normally set to “Use” when performing aging.)
7. Press the ·button.
8. The ·LED blinks, the aging mode is set, and aging is started.
9. The aging cycle lasts 3 minutes. When problems occur during
aging, the error number will be displayed on the fluorescent in-
dicator tube, and the PLED will light up.
(Refer to the following table for the details of the errors.)
10. Aging will be repeated as long as no errors occur.
11. After each aging cycle, the number displayed on the Fluores-
cent indicator tube will increase.
12. To end aging, press the POWER button
Error Display
Without remote commander for aging mode:
1. Turn ON the power of the unit. Open the front cover.
2. Press the CLEAR , ≠0 , and ·buttons in order.
3. When the disc set mode is set, the ·and PLEDs blink.
The following procedure is the same as in the case “With remote
commander for aging mode”.
Error code
Contents
Name
Code number
No disc in the specified slit
Disc in other slits
No function
No table sensor input
Load in timeover
Load out timeover
Access timeover
High speed search NG
Q data read error
BU operation (From focus search to until signal can be read) timeover
GFS monitor error
Focus cannot be imposed by focus search
DISC sensor check 1
DISC sensor check 2
Table operation check 2
Loading operation check 1
Loading operation check 2
BU related check 1
BU related check 2
BU related check 3
BU related check 4
BU related check 5
BU related check 6
Err 01
Err 02
Err 03
Err 04
Err 05
Err 06
Err *1
Err *2
Err *3
Err *4
Err *5
Err *6
The * numbers mean the following according to the state of the unit during aging
2 : From chucking to end of TOC read
3 : From end of TOC read to end of last track playback
4 : From end of last track playback to end of first track playback
DISC
51 26
Disc number
0C Err
number of agings Error code
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
— 15 —
SECTION 5
MECHANICAL ADJUSTMENTS
To adjust the mechanism section, enter the mechanism section adjustment mode.
For how to enter the mechanism section adjustment mode, refer to each adjustment section.
DISC SENSOR ALIGMENT
1. Make sure that there is no disc in the unit.
2. Connect an oscilloscope to TP501 of the AUDIO board.
AUDIO board
TP501
SENS
GND
TEST
SENS (CH1)
TEST (CH2)
GND
oscilloscope
3. While pressing the CLEAR and PLUS ONE buttons at the same time and turn ON the power.
POWER switch
PLUS ONE button
≠0
button
)±
button
CLEAR button
CHECK button
4. The fluorescent indicator tube shows as follows, and the mechanism section adjustment mode is set.
Blinks
DISC No. Rotation time
PLUS ONE
5. The disc table rotates in the counterclockwise direction. The disc table rotation time is displayed with ‘’PLUS ONE” slit as a measuring
point. (“LEFt” is displayed initially.)
6. Measure the waveform of the oscilloscope when the disc table is rotating.
**
23
4. 20SEC 78
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
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— 16 —
7. Move the holder (sensor) center so that the flat portion center at the top of the SENS (CH1) input waveform and the ‘’H” center of TEST
(CH2) coincide.
TEST (CH2) waveform
SENS (CH1) waveform
Flat portion center of
SENS (CH1) waveform
Fixed screw
Holder (sensor)
8. Tighten the fixed screw to fix the disc table, then press the CLEAR button.
9. The disc table rotates in the clockwise direction. Measure the waveform and make sure that the flat portion center at the top of the SENS
(CH1) input waveform and the ‘’H” center of TEST (CH2) coincide.
10. If the adjustment is not successful, press the CLEAR button to rotate the disc table in the counterclockwise direction, and perform steps
6 to 9.
Note:During the adjustment mode, the rotational direction is switched each time the CLEAR button is pressed. Immediately after the
button is pressed, “LEFt” or “rght” is displayed to notify of the rotational direction.
Pressing the CHECK button enters the loading mode which will be described later. Pressing the CLEAR button rotates the disc table
again.
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TEL 13942296513 QQ 376315150 892498299
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— 17 —
MAGNET ASSY ALIGMENT
1. Check that there is no disc in the unit and then turn ON the power. Open the door, and set a disc in the PLUS ONE slit.
2. Turn OFF the power, close the door, and while pressing the CLEAR and PLUS ONE buttons simultaneously, turn ON the power again.
3. Press the CHECK button, and set the loading mode.
4. Press the )‚∏ button and chuck the disc.
5. Adjust the magnet assembly and magnet holder so that A=B as shown in the figure.
AB
Magnet ASSY
Magnet holder
Magnet ASSY
Screw (For adjustment)
DISC HOLDER A ALIGMENT
1. Check that there is no disc in the unit and then turn ON the power. Open the door, and set a disc in the PLUS ONE slit.
2. Turn OFF the power, close the door, and while pressing the CLEAR and PLUS ONE buttons simultaneously, turn ON the power again.
3. Press the CHECK button, and set the loading mode.
4. Press the )‚∏ button and chuck the disc.
5. Press )‚∏ or ∏º 0button to stop the disc holder A slightly away from the disc.
6. Rotate and adjust the adjusting screw so that the center of the disc and that of the disc holder coincide.
Disc
Disc holder A Screw (For adjustment)
Disc
Disc holder A ab
a = b
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TEL 13942296513 QQ 376315150 892498299
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— 18 —
SECTION 6
ELECTRICAL ADJUSTMENTS
Note :
1. CD Block is basically designed to operate without adjustment.
Therefore, check each item in order given.
2. UseYEDS-18 disc (3-702-101-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10MΩimpedance.
4. Clean the object lens byanapplicatorwith neutraldetergentwhen
the signal level is low than specified value with the following
checks.
S Curve Check
10. Confirm that oscilloscope waveform is clear and check RF sig-
nal level is correct or not.
11. Turn OFF the power, and remove the lead wire connected at
step 7.
Note : A clear RF signal waveform means that the shape “◊” can
be clearly distinguished at the center of the waveform.
RF signal waveform
oscilloscope
BD board
TP (FE)
TP (VC)
Procedure :
1. Press the POWER button and turn ON the power supply.
2. Open the front cover, and press the PLUS ONE button.
3. Set the disc (YEDS-18) into the “PLUS ONE” slit.
4. Close the front cover, and chuck the disc.
5. Press the POWER button and turn OFF the power.
6. Connect the oscilloscope to TP (FE) of the BD board.
7. Connect TP (ADJ) of the DISPLAY board and the ground with
a lead wire.
8. Press the POWER button and turn ON the power.
9. The first track will be played back automatically. When the
CHECK button is pressed, “S JI” will be displayed on the fluo-
rescent indicator tube, and focus search will be repeated.
10. Check the oscilloscope waveform (S-curve) is symmetrical be-
tweenA and B.And confirm peak to peak level within 1.8 ± 0.6
Vp-p.
S-curve waveform
symmetry
within 1.8 ± 0.6Vp-p
A
B
11. Turn OFF the power, and remove the lead wire connected at
step 7.
Note : • Try to measure several times to make sure than the ratio
of A : B or B : A is more than 10 : 7.
• Take sweep time as long as possible and light up the
brightness to obtain best waveform.
RF Level Check
oscilloscope
BD board
TP (RF)
TP (VC)
Procedure :
1. Press the POWER button and turn ON the power supply.
2. Open the front cover, and press the PLUS ONE button.
3. Set the disc (YEDS-18) into the “PLUS ONE” slit.
4. Close the front cover, and chuck the disc.
5. Press the POWER button and turn OFF the power.
6. Connect the oscilloscope to TP (RF) of the BD board.
7. Connect TP (ADJ) of the DISPLAY board and the ground with
a lead wire.
8. Press the POWER button and turn ON the power.
9. Playback the fifth track of the disc.
level : 1.8 ± Vp-p
VOLT/DIV : 200mV
TIME/DIV : 500ns
+0.3
–0.2
E-F Balance (Traverse) Check
The procedure for this checking method differs for when a general
remote control unit is used and not used.
TP (TE)
TP (VC)
BD board oscilloscope
When a general remote commander is used:
1. Press the POWER button and turn ON the power supply.
2. Open the front cover, and press the PLUS ONE button.
3. Set the disc (YEDS-18) into the “PLUS ONE” slit.
4. Close the front cover, and chuck the disc.
5. Press the POWER button and turn OFF the power.
6. Connect the oscilloscope to TP (TE) of the BD board.
7. ConnectTP (ADJ) of the DISPLAY board and the ground with a
lead wire.
8. Press the POWER button and turn ON the power.
9. Playback the fifth track of the disc.
10. Press the 3button on the remote commander. (The tracking
servo and the sledding servo are turned OFF.)
11. Check the level B of the oscilliscope's waveform and theA (DC
voltage) of the center of the Traverse waveform.
Confirm the following :
A/B x 100 = less than ± 10%
Traverse waveform
A (DC voltage)
B
Center of the waveform
level : 0.7 ± 0.3 Vp-p
12. Press the 8button on the remote control unit. (The tracking
servo and sledding servo are turned ON.) Confirm the C (DC
voltage) is almost equal to the A (DC voltage) is step 11.
Traverse waveform
0V C (DC
voltage)
Tracking servo
Sled servo
ON
Tracking servo
Sled servo
OFF
13. Turn OFF the power, and remove the lead wire connected at
step 7.
0V
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TEL 13942296513 QQ 376315150 892498299
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— 19 — — 20 —
oscilloscope
BD board
TP (TE)
TP (VC)
When a general remote commander is not used:
1. Solder lead wires to TP (DVDD) and TP (TOFF) on the BD
board severally.
2. Connect the oscilloscope to TP (TE) of the BD board.
3. Press the POWER button and turn ON the power supply.
4. Open the front cover, and press the PLUS ONE button.
5. Set the disc (YEDS-18) into the “PLUS ONE” slit.
6. Close the front cover, and chuck the disc.
7. Playback the fifth track of the disc.
8. Short-circuit the lead wire connected at step 1. (The tracking
servo is turned OFF)
9. Check the level B of the oscilliscope's waveform and theA (DC
voltage) of the center of the Traverse waveform.
Confirm the following :
A/B x 100 = less than ± 10%
Traverse waveform
7-1. CIRCUIT BOARDS LOCATION
SECTION 7
DIAGRAMS
POWER SW board
LED board
DISPLAY board
AUDIO board
DISC SENSOR (S) board
TABLE SENSOR board
BD board
SW board
MOTOR board
DISC SENSOR (R) board
A (DC voltage)
10. Disconnect the lead wire short-circuited at step 8. (The track-
ing servo is turned ON.) Confirm the C (DC voltage) is almost
equal to the A (DC voltage) is step 8.
Traverse waveform
0V
11. Turn OFF the power, and remove the lead wire connected at
step 1.
RF PLL Free-run Frequency Check
Procedure :
1. Connect the frequency counter to TP (PLCK) of the BD board.
frequency counter
BD board
B
Center of the waveform
level : 0.7 ± 0.3Vp-p
C (DC
voltage)
Tracking servo
OFF Tracking servo
ON
TP (PLCK)
2. Press the POWER button and turn ON the power supply.
3. Open the front cover, and press the PLUS ONE button.
4. Set the disc (YEDS-18) into the “PLUS ONE” slit.
5. Close the front cover, and chuck the disc.
6. Playback the fifth track of the disc.
7. Confirm that reading on frequency counter is 4.3218 MHz ± 30
kHz.
Adjustment Location :
[ BD BOARD ] — CONDUCTOR SIDE —
IC102
IC101
TP
(VC) TP
(TE)
TP
(FE)
TP
(RF)
TP
(PLCK)
CN101
CN102
CN103
About RV502 on the AUDIO board
RV502 of the AUDIO board requires no adjustments. Please note
that it should be dixed to mechanical center position when you
moved and do not know origin position.
TP
(DVDD)
[ DISPLAY BOARD ] — CONDUCTOR SIDE —
CNP804 IC801
TP301
(ADJ)
CNP801
[ AUDIO BOARD ] — COMPONENT SIDE —
RV502
(No Adjustment)
IC601
CN501 CN801
CN811
T501
0V
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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