Sony CDP-XE570 Service Manual ▷ View online
8
CDP-XE570
SECTION 4
TEST MODE
4-1. CHECK MODE
The following checks can be performed in the CHECK Mode.
• Offset value display
1.
Turn on the set.
2.
Put disc in the set.
3.
Press the [PLAY MODE] , H and M buttons simultaneously.
4.
The Offset measured values will be displayed as “AB 02 FE”
(typical values).
(typical values).
• RFDC value display
1.
Turn on the set.
2.
Put disc in the set.
3.
Press the [PLAY MODE], H and m buttons simultaneously.
4.
The RFDC measured value will be displayed as “RFDC 65”
(typical value). If there is no disc in the set, “RFDC NO” will
be displayed.
(typical value). If there is no disc in the set, “RFDC NO” will
be displayed.
4-2. AFADJ MODE
The following checks can be performed in the AFADJ mode, which
is set by connecting the TP2 (AFADJ) terminal on DISPLAY
BOARD to the Ground and turning on the power.
is set by connecting the TP2 (AFADJ) terminal on DISPLAY
BOARD to the Ground and turning on the power.
• FL tube check
After all segments light up, when the H button is pressed, the
following will be displayed.
following will be displayed.
When the x button is pressed, the following will be displayed.
A
B
C
D
E
F
4
2
14
12
6
8
10
16
18
20
The display will light up as follows when the l AMS L
knob is rotated to the right, and as follows when rotated to the
left.
knob is rotated to the right, and as follows when rotated to the
left.
When the OPEN/CLOSE A button is pressed, all will light up
again.
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 “15”. 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 “15”. It will not count
for buttons already pressed once, but will display the button’s
number.
88
TOTAL
=
88
X
X
Display of button number
Display of counting
JOG RIGHT
JOG LEFT
Button
X
M
m
ENTER(AMS)
TIME/TEXT
FADER
CLEAR
CHECK
Buttton No.
Displayed
1
8
9
10
16
17
18
19
Button
PEAK SEARCH
TIME EDIT
PLAY MODE
REPEAT
OPEN/CLOSE
A
PLAY H
STOP x
Button No.
Displayed
20
21
22
23
All lit
(ABCDEF)
(Music Calendar)
• Remote commander check
When the “ H ” button is pressed, the display will light up
as follows.
as follows.
REMOCON PLAY
9
CDP-XE570
4-3. 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.
set by connecting the TP1 (ADJ) terminal to the Ground and turning
on the power.
Table of Button Operations in ADJ Mode
The functions of the buttons are shown in the following table.
Function of Buttons
* NOTE : Other buttons are not used for servicing and should not
be pressed without a reason.
Button
TIME/TEXT
M
m
CLEAR
Function
Tracking servo ON/OFF
OFFSET(VC)/EF.BIAS display
OFFSET(RF,FE,TRK) display
RFCK/GFS/ERROR RATE check mode
TP2
AFADJ
AFADJ
TP1
ADJ
ADJ
GND
S531
l
AMS
L
[ DISPLAY BOARD ] – Conductor side –
10
CDP-XE570
Procedure :
1.
1.
Connect oscilloscpe to test point TP (TE1) and TP (VC) on
BD BOARD.
BD BOARD.
2.
Turn Power switch on.
3.
Put disc (PATD-012) in to play the number five track.
4.
Press the X (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%
(DC voltage) of the center of the Traverse waveform.
Confirm the following :
A/B x 100 = less than ± 22%
E-F Balance Check
Procedure :
1.
1.
Connect the test point TP1 (ADJ) on DISPLAY BOARD to
the ground with a lead wire on main board.
the ground with a lead wire on main board.
2.
Connect oscilloscpe to test point TP (TE1) and TP (VC) on
BD BOARD.
BD BOARD.
3.
Turn the Power switch on to set the ADJ mode.
4.
Put disc (PATD-012) in to play the number five track.
5.
Press the [TIME/TEXT] button. (The tracking servo are turned
OFF.)
OFF.)
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%
(DC voltage) of the center of the Traverse waveform.
Confirm the following :
A/B x 100 = less than ± 22%
Traverse waveform
oscilloscope
BD board
TP (TE1)
TP (VC)
TP (VC)
0V
level : 1.15
±
0.5 Vp-p
A (DC voltage)
Center of the waveform
B
0V
C (DC
voltage)
voltage)
Tracking servo
OFF
Tracking servo
ON
ON
SECTION 5
ELECTRICAL BLOCK CHECKING
Note:
1.
1.
CD Block is basically designed to operate without adjustment.
Therefore, check each item in order given.
Therefore, check each item in order given.
2.
Use PATD-012 disc (3-702-101-01) unless otherwise indicated.
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.
when the signal level is low than specified value with the
following checks.
VOLT/DIV : 200mV
TIME/DIV : 500ns
TIME/DIV : 500ns
level : 1.35
±
0.4 Vp-p
oscilloscope
BD board
TP (TE1)
TP (VC)
TP (VC)
0V
level : 1.15
±
0.5Vp-p
A (DC voltage)
Center of the waveform
B
symmetry
RF Level Check
oscilloscope
BD board
TP (RF AC)
TP (VC)
TP (VC)
Procedure :
1.
1.
Connect oscilloscope to test point TP (RF AC) and TP (VC) on
BD BOARD.
BD BOARD.
2.
Connect the test point TP1 (ADJ) on DISPLAY BOARD to the
ground with a lead wire.
ground with a lead wire.
3.
Turn Power switch on.
4.
Put disc (PATD-012) in to play the number five track.
5.
Press the [CLEAR] buton and select the RFCK function.
6.
Confirm that oscilloscope waveform is clear and check RF
signal level is correct or not.
signal 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
1 track jump waveform
7.
Press the [TIME/TEXT] button. (The tracking servo are turned
ON.) Confirm the C (DC voltage) is almost equal to the A (DC
voltage) is step 6.
ON.) Confirm the C (DC voltage) is almost equal to the A (DC
voltage) is step 6.
Traverse waveform
8.
Disconnect the lead wire of TP1 (ADJ) connected in step 1.
11
CDP-XE570
[ BD BOARD ] – Side B –
Adjustment Location :
[ DISPLAY BOARD ] – Conductor side –
CN102
IC101
TP(FE1)
TP(TE1)
TP(VC)
TP(RF AC)
TP2
AFADJ
AFADJ
TP1
ADJ
ADJ
GND
S531
l AMS L
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