Sony CDP-XE220 / CDP-XE320 Service Manual ▷ View online
– 5 –
SECTION 3
DISASSEMBLY
Note :
Follow the disassembly procedure in the numerical order given.
3-1. FRONT PANEL
• In order to remove the front panel block when the power supply
does not turn on, rotate the cam with tapering driver as the figure
shows, and the loading part will be moved.
Then pull out the loading part by your hand to remove the loading
panel as the figure shows. After that take out the front panel block.
shows, and the loading part will be moved.
Then pull out the loading part by your hand to remove the loading
panel as the figure shows. After that take out the front panel block.
3-2. BASE UNIT (BU-5BD29C)
Tapering driver
Loading part
Loading panel
4
Remove the Base unit
(BU-5BD29C) to the direction
of arrow.
of arrow.
1
Turn the cam to the direction of
arrow (counter clock wise) by
tapering driver.
tapering driver.
2
Take off the disc table.
3
Yoke bracket
BU-5BD29C
– 6 –
SECTION 4
TEST MODE
4-1. AF MODE
The following checks can be performed in the AF mode, which is
set by connecting the TP2 (JW40 : AFADJ) terminal on MAIN board
to the Ground and turning on the power.
set by connecting the TP2 (JW40 : AFADJ) terminal on MAIN board
to the Ground and turning on the power.
• FL tube check
After all segments light up, when the · button is pressed con-
tinuously, the following will be displayed. (Partial lighting 1)
tinuously, the following will be displayed. (Partial lighting 1)
When the p button is pressed continuously, the following will be
displayed. (partial lighting 2)
displayed. (partial lighting 2)
When the OPEN/CLOSE § button is pressed continuously, all
will light up again.
will light up again.
• Key check
All buttons have corresponding button numbers. When a button
is pressed, the counter will count up and display the button’s num-
ber. However, the counter will only count to “13”. It will not count
for buttons already pressed once, but will display the button’s
number.
is pressed, the counter will count up and display the button’s num-
ber. However, the counter will only count to “13”. It will not count
for buttons already pressed once, but will display the button’s
number.
P
ENTER (AMS)
0
)
TIME
REPEAT
PLAY MODE
02
04
05
06
07
08
09
PEAK SERCH
CHECK
CLEAR
OPEN/
CLOSE §
PLAY ·
STOP p
10
11
12
All lit
Partial lighting 1
Partial lighting 2
Button
Button No.
Displayed
Button
Button No.
Displayed
When the AMS knob is rotated to the right, the music calendar
changes from 1 n – – n 20 n 1.
When rotated to the left, it changes from 20 n 1 n 20 – –
changes from 1 n – – n 20 n 1.
When rotated to the left, it changes from 20 n 1 n 20 – –
• Remote commander check
When the · button of the remote commander is pressed, the
“·” lights up. All go off when the other buttons are pressed.
“·” lights up. All go off when the other buttons are pressed.
4-2. ADJ MODE
The following operations are performed in the ADJ mode, which
is set by connecting the TP3 (JW41 : ADJ) terminal to the Ground
and turning on the power.
is set by connecting the TP3 (JW41 : ADJ) terminal to the Ground
and turning on the power.
FUNCTIONS OF NUMBER BUTTONS
(With the general remote commander)
(With the general remote commander)
8
8 8
(Partial lighting 1)
2
4
6
8
10
12
14
16
18
20
(Partial lighting 2)
Â
Display of counting
88
8888
Â
Display of button number
Function
Button
Focus bias adjustment plus (Not used in servicing)
EF-BALANCE adjustment plus (Not used in servicing)
Tracking servo off
Tracking gain adjusting plus (Not used in servicing)
Laser power control off (Not used in servicing)
Focus bias adjustment minus (Not used in servicing)
EF-BALANCE adjustment minus (Not used in servicing)
Tracking servo on
Tracking gain adjustment minus ((Not used in servicing)
Laser power control on (Not used in servicing)
1
2
3
4
5
6
7
8
9
10
0
1
2
3
4
5
6
Load in
Access to TOC
Access to last track
Playback of last track
(3 seconds)
Access to first track
Playback of first track
(3 seconds)
Load out
A0
A1
A2
Counter display
A4
Counter display
A6
E0
E1
E2
E3
E4
E5
E6
Code
No.
State
Display when
normal
Display when
abnormal
4-3. AGING MODE
This unit is equipped with an aging mode to check operations of the
mechanism deck.
• When faults occur:
Aging stops, and the state when aging stopped is displayed on the
fluorescent display tube.
mechanism deck.
• When faults occur:
Aging stops, and the state when aging stopped is displayed on the
fluorescent display tube.
• When no fault has occurred:
Aging is continued repeatedly.
Aging is continued repeatedly.
Aging method 1
(When using the aging mode remote controller (J-2501-123-A)):
1. Press the 1/u button and turn ON the power.
2. Set the disc on the tray.
3. Press the AGING START button of the aging remote controller.
4. Aging starts and the message shown in Fig. 1 is displayed on the
(When using the aging mode remote controller (J-2501-123-A)):
1. Press the 1/u button and turn ON the power.
2. Set the disc on the tray.
3. Press the AGING START button of the aging remote controller.
4. Aging starts and the message shown in Fig. 1 is displayed on the
fluorescent display tube.
5. To end, press the 1/u button.
Aging method 2 (When no aging mode remote controller):
1. Press the 1/u button and turn ON the power.
2. Set the disc on the tray.
3. Press the ∏ button, CHECK button, and PLAY MODE button
1. Press the 1/u button and turn ON the power.
2. Set the disc on the tray.
3. Press the ∏ button, CHECK button, and PLAY MODE button
together in this order.
4. Aging starts and the message shown in Fig. 1 is displayed on the
fluorescent display tube.
5. To end, press the 1/u button.
Fig. 1 Message in Aging Mode
– 7 –
[ MAIN BOARD ] — Component Side —
IC401
CN402
TP3
(JW41: ADJ)
TP2
(JW40: AF ADJ)
(JW40: AF ADJ)
– 8 –
SECTION 5
ELECTRICAL BLOCK CHECKING
Note:
1. CD Block is basically designed to operate without adjustment.
Therefore, check each item in order given.
2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10M
3. Use an oscilloscope with more than 10M
Ω
impedance.
4. Clean the object lens by an applicator with neutral detergent when
the signal level is low than specified value with the following
checks.
checks.
S Curve Check
Procedure :
1. Connect oscilloscope to test point TP (FEO) on BD board.
2. Connect between test point TP (FOK) and ground by lead wire.
3. Turn Power switch on.
4. Put disc (YEDS-18) in and turn Power switch on again and actu-
1. Connect oscilloscope to test point TP (FEO) on BD board.
2. Connect between test point TP (FOK) and ground by lead wire.
3. Turn Power switch on.
4. Put disc (YEDS-18) in and turn Power switch on again and actu-
ate the focus search. (actuate the focus search when disc table is
moving in and out.)
moving in and out.)
5. Check the oscilloscope waveform (S-curve) is symmetrical
between A and B. And confirm peak to peak level within 3±1
Vp-p.
Vp-p.
S-curve waveform
6. After check, remove the lead wire connected in step 2.
Note :
• Try to measure several times to make sure than the ratio of A : B
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
Procedure :
1. Connect oscilloscope to test point TP (RF) on BD board.
2. Turn Power switch on.
3. Put disc (YEDS-18) in to play the number five track.
4. Confirm that oscilloscope waveform is clear and check RF sig-
1. Connect oscilloscope to test point TP (RF) on BD board.
2. Turn Power switch on.
3. Put disc (YEDS-18) in to play the number five track.
4. Confirm that oscilloscope waveform is clear and check RF sig-
nal level is correct or not.
Note:
A clear RF signal waveform means that the shape “
A clear RF signal waveform means that the shape “
◊
” can be clearly
distinguished at the center of the waveform.
RF signal waveform
E-F Balance (1 Track Jump) Check
(Without remote commander)
(Without remote commander)
Procedure :
1. Connect oscilloscpe to test point TP (TEO) on BD board.
2. Turn Power switch on.
3. Put disc (YEDS-18) in to play the number five track.
4. Press the “P (Pause)” button. (Becomes the 1 track jump mode)
5. Check the level B of the oscilliscope's waveform and the A (DC
1. Connect oscilloscpe to test point TP (TEO) on BD board.
2. Turn Power switch on.
3. Put disc (YEDS-18) in to play the number five track.
4. Press the “P (Pause)” button. (Becomes the 1 track jump mode)
5. Check the level B of the oscilliscope's waveform and the A (DC
voltage) of the center of the Traverse waveform.
Confirm the following :
A/B x 100 = less than ± 7%
Confirm the following :
A/B x 100 = less than ± 7%
1 track jump waveform
E-F Balance Check (With remote commander)
Procedure :
1. Connect the test point TP3 (ADJ) on MAIN board to the ground
1. Connect the test point TP3 (ADJ) on MAIN board to the ground
with a lead wire on main board.
2. Connect oscilloscpe to test point TP (TEO) on BD board.
3. Turn the Power switch on to set the ADJ mode.
4. Put disc (YEDS-18) in to play the number five track.
5. Press the “3” button. (The tracking servo is turned OFF.)
3. Turn the Power switch on to set the ADJ mode.
4. Put disc (YEDS-18) in to play the number five track.
5. Press the “3” button. (The tracking servo is turned OFF.)
oscilloscope
BD board
TP (FEO)
TP (VC)
TP (VC)
symmetry
A
B
Within 3
±
1 Vp-p
oscilloscope
BD board
TP (RF)
TP (VC)
TP (VC)
VOLT/DIV : 200mV
TIME/DIV : 500ns
TIME/DIV : 500ns
level : 1.3
±
0.3 Vp-p
oscilloscope
BD board
TP (TEO)
TP (VC)
TP (VC)
0V
level : 500
±
100 mVp-p
A (DC voltage)
Center of the waveform
B
symmetry
oscilloscope
BD board
TP (TEO)
TP (VC)
TP (VC)
Click on the first or last page to see other CDP-XE220 / CDP-XE320 service manuals if exist.