Sony CDP-XE210 / CDP-XE310 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 load-
ing 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 load-
ing panel as the figure shows. After that take out the front panel
block.
Tapering driver
Loading part
Loading panel
1
Turn the cam to the direction of ar-
row (counter clock wise)
by tapering driver.
row (counter clock wise)
by tapering driver.
BU-5BD20
2
Take off the disc table.
3
Yoke bracket
4
Remove the Base unit
(BU-5BD20) to the direction
of arrow.
(BU-5BD20) to the direction
of arrow.
3-2. BASE UNIT (BU-5BD20)
— 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 (AFADJ) terminal on MAIN board to
the Ground and turning on the power.
set by connecting the TP2 (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)
When the
p button is pressed continuously, the following will be
displayed. (partial lighting 2)
When the OPEN/CLOSE
§ button is pressed continuously, all
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 “12”. 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 “12”. It will not count
for buttons already pressed once, but will display the button’s
number.
TIME
REPEAT
PLAY MODE
P
ENTER
CLEAR
CHECK
23
22
21
10
12
13
14
)
0
OPEN/
CLOSE
§
PLAY
·
STOP
p
15
16
All lit
Partial lighting 1
Partial lighting 2
Button
Button No.
Displayed
Button
Button No.
Displayed
• Remote commander check
When the
· button of the remote commander is pressed, the
“
·” 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 TP1 (ADJ) terminal to the Ground and
turning on the power.
is set by connecting the TP1 (ADJ) terminal to the Ground and
turning on the power.
• During playback, there is no problem even if the GFS is continu-
ously LOW.
• High speed search is prohibited during access.
• During playback, the gain of focus servo and spindle servo does
• During playback, the gain of focus servo and spindle servo does
not decrease.
• Servo related manual operations and measurement can be
performed.
(For details of operations, refer to Table of Key Operrations in
ADJ Mode.)
(For details of operations, refer to Table of Key Operrations in
ADJ Mode.)
4-3. CLV-S MODE
The spindle servo for playback sets into the CLV-S mode when
the TP1 (ADJ) terminal is connected to Ground after turning on the
power.
the TP1 (ADJ) terminal is connected to Ground after turning on the
power.
TABLE OF BUTTON OPERATIONS IN ADJ MODE
The jitter value display mode can be set after the all-music
remaining number mode using the TIME button.
remaining number mode using the TIME button.
The functions of the number buttons are shown in the following
table.
table.
FUNCTIONS OF NUMBER BUTTONS
(With the general remote commander)
(With the general remote commander)
[ MAIN BOARD ] — Component Side —
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
CN202
CN201
TP1 (ADJ)
TP2 (AFADJ)
IC401
Function
Button
Focus bias 8-step up
Middle of focus bias up/down turning point
Tracking servo, sled servo off
Auto gain initialization
Focus servo off
Focus bias 8-step down
Immediate readjustment of focus bias
Tracking servo, sled servo on
Auto focus bias start point
1
2
3
4
5
6
7
8
10
— 7 —
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 (FE) on BD board.
2. Connect between test point TP (FEI) and TP (VC) by lead wire.
3. Turn Power switch on.
4. Put disc (YEDS-18) in and turn Power switch on again and ac-
1. Connect oscilloscope to test point TP (FE) on BD board.
2. Connect between test point TP (FEI) and TP (VC) by lead wire.
3. Turn Power switch on.
4. Put disc (YEDS-18) in and turn Power switch on again and ac-
tuate the focus search. (actuate the focus search when disc table
is moving in and out.)
is 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
oscilloscope
BD board
TP (FE)
TP (VC)
TP (VC)
symmetry
A
B
within 3 ± 1 Vp-p
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
level : 1.25 ± 0.25 Vp-p
VOLT/DIV : 200mV
TIME/DIV : 500ns
TIME/DIV : 500ns
E-F Balance (1 Track Jump) Check
(Without remote commander)
(Without remote commander)
oscilloscope
BD board
TP (TE)
TP (VC)
TP (VC)
Procedure :
1. Connect oscilloscpe to test point TP (TE) on BD board.
2. Turn Power switch on.
3. Put disc (YEDS-18) in to play the number five track.
4. Press the “
1. Connect oscilloscpe to test point TP (TE) 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 ± 22%
Confirm the following :
A/B x 100 = less than ± 22%
1 track jump waveform
E-F Balance Check (With remote commander)
oscilloscope
BD board
TP (TE)
TP (VC)
TP (VC)
Procedure :
1. Connect the test point TP1 (ADJ) on MAIN board to the ground
1. Connect the test point TP1 (ADJ) on MAIN board to the ground
with a lead wire on main board.
2. Connect oscilloscpe to test point TP (TE) 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 and the sledding servo
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 and the sledding servo
are turned OFF.)
0V
oscilloscope
TP (RF)
TP (VC)
TP (VC)
BD board
Center of the waveform
B
level : 1.3 ± 0.6 Vp-p
symmetry
A (DC voltage)
— 8 —
6. 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 ± 22%
Confirm the following :
A/B x 100 = less than ± 22%
Traverse waveform
Center of the waveform
B
level : 1.3 ± 0.6 Vp-p
0V
A (DC voltage)
7. Press the “8” button. (The tracking servo and sledding servo are
turned ON.) Confirm the C (DC voltage) is almost equal to the
A (DC voltage) is step 6.
A (DC voltage) is step 6.
Traverse waveform
0V
Tracking servo
Sledding servo
OFF
Tracking servo
Sledding servo
ON
C (DC
voltage)
voltage)
8. Disconnect the lead wire of TP1 (ADJ) connected in step 1.
RF PLL Free-run Frequency Check
Procedure :
1. Connect frequency counter to test point (PLCK) with lead wire.
1. Connect frequency counter to test point (PLCK) with lead wire.
frequency counter
BD board
TP (PLCK)
2. Turn Power switch on.
3. Put the disc (YEDS-18) in to play the number five track.
3. Put the disc (YEDS-18) in to play the number five track.
Confirm that reading on frequency counter is 4.3218MHz.
Adjustment Location :
[ BD BOARD ] — Side A —
10
1
IC103
20
11
(RF)
(FE)
(FEI)
(TE)
(PLCK)
IC101
(TEI)
(VC)
[ MAIN BOARD ] — Component Side —
CN202
CN201
TP1 (ADJ)
TP2 (AFADJ)
IC401
J301
IC801
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