Sony CMT-CP500MD / HCD-CP500MD Service Manual ▷ View online
33
HCD-CP500MD
9. Press the
ENTER/YES “R”
button to display “EFB =
MO-
P”.
Then, the optical pick-up moves to the pit area automatically
and servo is imposed.
Then, the optical pick-up moves to the pit area automatically
and servo is imposed.
10. Observe the waveform of the oscilloscope, and check that the
specified value is satisfied. Do not press the
.
“R”
or
>
“R”
button.
Traverse Waveform
11. Press the
ENTER/YES “R”
button to display “EF MO CHECK”
(C14).
The disc stops rotating automatically.
The disc stops rotating automatically.
12. Press the Z (MD) button and take out the disc.
13. Load the check disc (TDYS-1).
14. Press the
13. Load the check disc (TDYS-1).
14. Press the
.
“R”
or
>
“R”
button and display “EF CD
CHECK” (C15).
15. Press the
ENTER/YES “R”
button to display “EFB =
CD”.
Servo is imposed automatically.
16. Observe the waveform of the oscilloscope, and check that the
specified value is satisfied. Do not press the
.
“R”
or
>
“R”
button.
Traverse Waveform
17. Press the
ENTER/YES “R”
button to display “EF CD CHECK”
(C15).
18. Press the Z (MD) button and take out the check disc (TDYS-1).
Checking Location: BD (MD) board (see page 38)
6-7. Focus Bias Check
Change the focus bias and check the focus tolerance amount.
Procedure:
1. Load the test disc (MDW-74/GA-1).
2. Press the
Procedure:
1. Load the test disc (MDW-74/GA-1).
2. Press the
.
“R”
or
>
“R”
button to display “CPLAY 1MODE”
(C34).
3. Press the
ENTER/YES “R”
button to display “CPLAY 1MID”.
4. Press the
MENU/NO “R”
button when “C =
AD =
)” is
displayed.
5. Press the
.
“R”
or
>
“R”
button to display “FBIAS
CHECK” (C16).
6. Press the
ENTER/YES “R”
button to display “
/
c =
”.
The first four digits indicate the C1 error rate, the two digits
after [/] indicate ADER, and the 2 digits after [c =] indicate the
focus bias value.
Check that the C1 error is below 50 and ADER is below 2.
after [/] indicate ADER, and the 2 digits after [c =] indicate the
focus bias value.
Check that the C1 error is below 50 and ADER is below 2.
7. Press the
ENTER/YES “R”
button to display “
/
b =
”.
Check that the C1 error is about 200 and ADER is below 2.
8. Press the
ENTER/YES “R”
button to display “
/
a =
”.
Check that the C1 error is about 200 and ADER is below 2.
9. Press the
MENU/NO “R”
button, then press the Z (MD) button
and take out the test disc.
6-8. C PLAY Check
MO Error Rate Check
Procedure:
1. Load the test disc (MDW-74/GA-1).
2. Press the
1. Load the test disc (MDW-74/GA-1).
2. Press the
.
“R”
or
>
“R”
button to display “CPLAY 1MODE”
(C34).
3. Press the
ENTER/YES “R”
button to display “CPLAY 1MID”.
4. The display changes to “C =
AD =
)”.
5. If the C1 error rate is below 50, check that ADER is 00.
6. Press the
6. Press the
MENU/NO “R”
button to stop playback, then press the
Z (MD) button and take out the test disc.
CD Error Rate Check
Procedure:
1. Load the check disc (TDYS-1).
2. Press the
1. Load the check disc (TDYS-1).
2. Press the
.
“R”
or
>
“R”
button to display “CPLAY 1MODE”
(C34).
3. Press the
ENTER/YES “R”
button to display “CPLAY 1MID”.
4. The display changes to “C =
AD =
)”.
5. Check that the C1 error rate is below 50.
6. Press the
6. Press the
MENU/NO “R”
button to stop playback, then press the
Z (MD) button and take out the check disc.
6-9. Self-Recording/playback Check
Prepare a continuous recording disc using the unit to be repaired
and check the error rate.
and check the error rate.
Procedure:
1. Load a recordable disc (blank disc).
2. Press the
1. Load a recordable disc (blank disc).
2. Press the
.
“R”
or
>
“R”
button to display “CREC
1MODE” (C35).
3. Press the
ENTER/YES “R”
button to display “CREC 1MID”.
4. When recording starts, “REC” and “CREC 1 (@@@@)”
(@@@@ is the address) are displayed.
5. About 1 minute later, press the
MENU/NO “R”
button to stop
continuous recording.
6. Press the
.
“R”
or
>
“R”
button to display “CPLAY 1
MODE” (C34).
7. Press the
ENTER/YES “R”
button to display “CPLAY 1MID”.
8. “C =
AD =
)” will be displayed.
9. Check that the C1 error becomes below 50 and the AD error
below 2.
10. Press the
MENU/NO “R”
button to stop playback, then press the
Z (MD) button and take out the disc.
A
B
VC
Specified value : Below 10% offset value
Offset value (%) = X 100
I
A – B
I
2 (A + B)
A
B
VC
Specified value : Below 10% offset value
Offset value (%) = X 100
I
A – B
I
2 (A + B)
34
HCD-CP500MD
7. INITIAL SETTING OF ADJUSTMENT VALUE
Note:
Mode which sets the adjustment results recorded in the non-volatile
memory to the initial setting value. However the results of the tempera-
ture compensation offset adjustment will not change to the initial setting
value.
If initial setting is performed, perform all adjustments again excluding the
temperature compensation offset adjustment.
For details of the initial setting, refer to “4. Precautions for Adjustments”
(See page 39) and execute the initial setting before the adjustment as re-
quired.
memory to the initial setting value. However the results of the tempera-
ture compensation offset adjustment will not change to the initial setting
value.
If initial setting is performed, perform all adjustments again excluding the
temperature compensation offset adjustment.
For details of the initial setting, refer to “4. Precautions for Adjustments”
(See page 39) and execute the initial setting before the adjustment as re-
quired.
Procedure:
1. Press the
1. Press the
.
“R”
or
>
“R”
button to display “ADJ CLEAR”
(C28).
2. Press the
ENTER/YES “R”
button. “Complete!” will be
displayed momentarily and initial setting will be executed, after
which “ADJ CLEAR” (C28) will be displayed.
which “ADJ CLEAR” (C28) will be displayed.
8. RECORDING AND DISPLAYING THE IOP
INFORMATION
The IOP data can be recorded in the non-volatile memory. The IOP
value on the optical pick-up label and the IOP value after the
adjustment will be recorded. Recording these data eliminates the
need to read the label on the optical pick-up.
value on the optical pick-up label and the IOP value after the
adjustment will be recorded. Recording these data eliminates the
need to read the label on the optical pick-up.
Recording Procedure:
1. Press the
1. Press the
.
“R”
or
>
“R”
button to display “Iop Write”
(C05), and press the
ENTER/YES “R”
button.
2. The display becomes “Ref=@@@.@” (@ is an arbitrary
number) and the numbers which can be changed will blink.
3. Input the IOP value on the optical pick-up label.
To select the number : Press the
.
“R”
or
>
“R”
button.
To select the digit : Press the
[REC MODE]
button.
4. When the
ENTER/YES “R”
button is pressed, the display
becomes “Measu=@@@.@” (@ is an arbitrary number).
5. As the adjustment results are recorded for the step 4 value. Leave
it as it is and press the
ENTER/YES “R”
button.
6. “Complete!” will be displayed momentarily. The value will be
recorded in the non-volatile memory and the display will become
“Iop Write” (C05).
“Iop Write” (C05).
Display Procedure:
1. Press the
1. Press the
.
“R”
or
>
“R”
button to display “IopRead”(C26).
2. “@@.@/##.#” is displayed and the recorded contents are
displayed.
@@.@ indicates the IOP value on the optical pick-up label.
##.# indicates the IOP value after adjustment
@@.@ indicates the IOP value on the optical pick-up label.
##.# indicates the IOP value after adjustment
3. To end, press the
MENU/NO “R”
button to display “Iop Read”
(C26).
9. TEMPERATURE COMPENSATION OFFSET
ADJUSTMENT
Save the temperature data at that time in the non-volatile memory
as 25 ˚C reference data.
as 25 ˚C reference data.
Note:
1. Usually, do not perform this adjustment.
2. Perform this adjustment in an ambient temperature of 22 ˚C to 28 ˚C.
2. Perform this adjustment in an ambient temperature of 22 ˚C to 28 ˚C.
Perform it immediately after the power is turned on when the internal
temperature of the unit is the same as the ambient temperature of 22 ˚C
to 28 ˚C.
temperature of the unit is the same as the ambient temperature of 22 ˚C
to 28 ˚C.
3. When D101 has been replaced, perform this adjustment after the tem-
perature of this part has become the ambient temperature.
Procedure:
1. Press the
1. Press the
.
“R”
or
>
“R”
button to display “TEMP
ADJUST” (C03).
2. Press the
ENTER/YES “R”
button to select the “TEMP
ADJUST” mode.
3. “TEMP =
[OK]” and the current temperature data will be
displayed.
4. To save the data, press the
ENTER/YES “R”
button.
When not saving the data, press the
MENU/NO “R”
button.
5. When the
ENTER/YES “R”
button is pressed, “TEMP =
SAVE” will be displayed and turned back to “TEMP ADJUST”
(C03) display then. When the
(C03) display then. When the
MENU/NO “R”
button is pressed,
“TEMP ADJUST” (C03) will be displayed immediately.
Specified Value:
The “TEMP =
The “TEMP =
” should be within “E0 - EF”, “F0 - FF”, “00 -
0F”, “10 - 1F” and “20 - 2F”.
10.LASER POWER ADJUSTMENT
Before starting adjustment;
The laser power adjustment value changes depending upon the types
of the optical pick-up (KMS-260B or KMS-260E).
Check the type of the optical pick-up before starting adjustment.
(See the illustrations “The method of identifying the optical pick-
up on page 35.)
Check the IOP value of the optical pick-up before adjustments.
(Refer to 8. Recording and Displaying the Iop Information)
The laser power adjustment value changes depending upon the types
of the optical pick-up (KMS-260B or KMS-260E).
Check the type of the optical pick-up before starting adjustment.
(See the illustrations “The method of identifying the optical pick-
up on page 35.)
Check the IOP value of the optical pick-up before adjustments.
(Refer to 8. Recording and Displaying the Iop Information)
Connection:
Procedure:
1. Insert the laser power meter probe into the disk insertion slot
1. Insert the laser power meter probe into the disk insertion slot
and set it on top of the objective lens of the optical pick-up.
(When it cannot be set properly, press the
(When it cannot be set properly, press the
m
“R”
button
or
M
“R”
button to move the optical pick-up)
Connect the digital voltmeter to CN105 pin 1 (I+3V) and
CN105pin 2 (IOP) on the BD (MD) board.
CN105pin 2 (IOP) on the BD (MD) board.
2. Press the
.
“R”
or
>
“R”
button to display “LDPWR
ADJUST” (C04).
(Laser power : For adjustment)
(Laser power : For adjustment)
3. Press the
ENTER/YES “R”
button once to display “LD 0.9 mW
$
”.
4. Press the
.
“R”
or
>
“R”
button until the laser power
meter reading matches with the specified value as described in
the following table.
the following table.
Press the
ENTER/YES “R”
button after setting the range knob
of the laser power meter, and save the adjustment results. (“LD
SAVE $
SAVE $
” will be displayed for a moment)
5. Then “LD 7.0 mW $
” will be displayed.
Optical pick-up
objective lens
objective lens
laser
power meter
power meter
+
–
–
BD (MD) board
digital voltmeter
CN105 pin
1
(I+3V)
CN105 pin
2
(IOP)
SPECIFIED VALUE
KMS-260B
KMS-260E
KMS-260E
0.85 to 0.91 mW
0.90 to 0.96 mW
0.90 to 0.96 mW
35
HCD-CP500MD
6. Press the
.
“R”
or
>
“R”
button so that the reading
of the laser power meter becomes the specified value, press the
ENTER/YES “R”
button to save it.
Note:
Do not perform the emission with 7.0 mW more than 15 seconds
continuously.
continuously.
7. Then, press the
.
“R”
or
>
“R”
button to display
“LDPWR CHECK” (C13).
8. Press the
ENTER/YES “R”
button once to display “LD 0.9mW$
”. Check that the reading of the laser power meter matches
with the specified value as described in the following table.
9. Press the
ENTER/YES “R”
button once more to display “LD
7.0mW$
”. Check that the reading the laser power meter and
digital voltmeter satisfy the specified value.
Note down the digital voltmeter reading value.
Note down the digital voltmeter reading value.
Specified Value:
Laser power meter reading :
Laser power meter reading :
Digital voltmeter reading
: Value on the optical pick-up label
±
10%
10. Press the
MENU/NO “R”
button to display “LDPWR CHECK”
(C13) and stop the laser emission.
(The
(The
MENU/NO “R”
button is effective at all times to stop the
laser emission)
11. Press the
.
“R”
or
>
“R”
button to display “Iop Write”
(C05).
12. Press the
ENTER/YES “R”
button. When the display becomes
Ref=@@@.@ (@ is an arbitrary number), press the
ENTER/
YES “R”
button to display “Measu=@@@.@” (@ is an arbitrary
number).
13. The numbers which can be changed will blink. Input the Iop
value noted down at step 9.
To select the number : Press the
To select the number : Press the
.
“R”
or
>
“R
button.
To select the digit
: Press the
[REC MODE]
button.
14. When the
ENTER/YES “R”
button is pressed, “Complete!” will
be displayed momentarily. The value will be recorded in the non-
volatile memory and the display will become “Iop Write” (C05).
volatile memory and the display will become “Iop Write” (C05).
Note:
After step 4, each time the
ENTER/YES “R”
button is pressed, the
display will be switched to “LD 0.7mW$
” and “LD 6.2mW$
Nothing needs to be performed here.
12. TRAVERSE ADJUSTMENT
Connection:
Procedure:
1. Connect an oscilloscope to CN105 pin 4 (TE) and CN105 pin
1. Connect an oscilloscope to CN105 pin 4 (TE) and CN105 pin
6
(VC) on the BD (MD) board.
2. Load a disc (any available on the market). (Refer to Note 1)
3. Press the
3. Press the
M
“R”
button to move the optical pick-up outside
the pit.
4. Press the
.
“R”
or
>
“R”
button to display “EF MO
ADJUST” (C07).
5. Press the
ENTER/YES “R”
button to display “EFB =
MO-R”.
(Laser power READ power/Focus servo ON/tracking servo OFF/
spindle (S) servo ON)
spindle (S) servo ON)
6. Press the
.
“R”
or
>
“R”
button so that the waveform of
the oscilloscope becomes the specified value.
(When the
(When the
.
“R”
or
>
“R”
button is pressed, the
of
“EFB=
” changes and the waveform changes) In this adjustment,
waveform varies at intervals of approx. 2%. Adjust the waveform
so that the specified value is satisfied as much as possible.
(Read power traverse adjustment)
so that the specified value is satisfied as much as possible.
(Read power traverse adjustment)
Traverse Waveform
7. Press the
ENTER/YES “R”
button and save the result of
adjustment to the non-volatile memory (“EFB =
SAVE” will
be displayed for a moment. Then “EFB =
MO-W” will be
displayed).
Note 1:
Data will be erased during MO reading if a recorded disc is
used in this adjustment.
used in this adjustment.
Note 2:
If the traverse waveform is not clear, connect the oscilloscope
as shown in the following figure so that it can be seen more
clearly.
as shown in the following figure so that it can be seen more
clearly.
KMS260B
20101
H0576
lOP=57.6 mA in this case
lOP (mA) = Digital voltmeter reading (mV)/1 (
lOP (mA) = Digital voltmeter reading (mV)/1 (
Ω
)
(Optical pick-up label)
For details of the method for
checking this value, refer to
“8. Recording and Displaying
the Iop Information”
checking this value, refer to
“8. Recording and Displaying
the Iop Information”
+
–
–
oscilloscope
(DC range)
V: 0.1 V/div
H: 10 ms/div
H: 10 ms/div
BD (MD) board
CN105 pin
4
(TE)
CN105 pin
6
(VC)
A
B
VC
Specification A = B
11. Iop NV SAVE
Write the reference values in the nonvolatile memory to perform
“Iop compare”. As this involves rewriting the reference values, do
not perform this procedure except when adjusting the laser power
during replacement of the optical pick-up and when replacing the
IC102. Otherwise the optical pick-up check may deteriorate.
“Iop compare”. As this involves rewriting the reference values, do
not perform this procedure except when adjusting the laser power
during replacement of the optical pick-up and when replacing the
IC102. Otherwise the optical pick-up check may deteriorate.
Note:
Perform this function with the optical pick-up set at room temperature.
Procedure:
1. Press the
1. Press the
.
“R”
or
>
“R”
button to display “Iop NV Save” (C06).
2. Press the
ENTER/YES “R”
button and display “Iop [stop]”.
3. After the display changes to “Iop =xxsave?”, press the
ENTER/
YES “R”
button.
4. After “Complete!” is displayed momentarily, the display changes
to “Iop 7.0 mW”.
5. After the display changes to “Iop=yysave?”, press the
ENTER/
YES “R”
button.
6. When “Complete!” is displayed, it means that Iop NV saving
has been completed.
+
–
–
oscilloscope
(DC range)
10 pF
330 k
Ω
CN105 pin
4
(TE)
CN105 pin
6
(VC)
BD (MD) board
The method of identifying the optical pick-up (KMS-260B/260E)
UV adhesive agent
Optical pick-up
(KMS-260B/260E)
Pink
: KMS-260B
White : KMS-260E
UV adhesive agent =
SPECIFIED VALUE
KMS-260B
KMS-260E
KMS-260E
6.7 to 7.1 mW
7.2 to 7.3 mW
7.2 to 7.3 mW
SPECIFIED VALUE
KMS-260B
KMS-260E
KMS-260E
0.85 to 0.91 mW
0.90 to 0.96 mW
0.90 to 0.96 mW
SPECIFIED VALUE
KMS-260B
KMS-260E
KMS-260E
6.8 to 7.2 mW
7.0 to 7.5 mW
7.0 to 7.5 mW
36
HCD-CP500MD
8. Press the
.
“R”
or
>
“R”
button so that the waveform of
the oscilloscope becomes the specified value.
(When the
(When the
.
“R”
or
>
“R”
button is pressed, the
of
“EFB=
” changes and the waveform changes) In this
adjustment, waveform varies at intervals of approx. 2%. Adjust
the waveform so that the specified value is satisfied as much as
possible.
(Write power traverse adjustment)
the waveform so that the specified value is satisfied as much as
possible.
(Write power traverse adjustment)
Traverse Waveform
9. Press the
ENTER/YES “R”
button, and save the adjustment
results in the non-volatile memory. (“EFB =
SAVE” will be
displayed for a moment)
10. “EFB =
MO-P” will be displayed.
The optical pick-up moves to the pit area automatically and
servo is imposed.
servo is imposed.
11. Press the
.
“R”
or
>
“R”
button until the waveform of
the oscilloscope moves closer to the specified value.
In this adjustment, waveform varies at intervals of approx. 2%.
Adjust the waveform so that the specified value is satisfied as
much as possible.
In this adjustment, waveform varies at intervals of approx. 2%.
Adjust the waveform so that the specified value is satisfied as
much as possible.
Traverse Waveform
12. Press the
ENTER/YES “R”
button, and save the adjustment
results in the non-volatile memory. (“EFB =
SAVE” will be
displayed for a moment)
Next “EF MO ADJUST” (C07) is displayed. The disc stops
rotating automatically.
Next “EF MO ADJUST” (C07) is displayed. The disc stops
rotating automatically.
13. Press the Z (MD) button and take out the disc.
14. Load the check disc (TDYS-1).
15. Press the
14. Load the check disc (TDYS-1).
15. Press the
.
“R”
or
>
“R”
button to display “EF CD
ADJUST” (C08).
16. Press the
ENTER/YES “R”
button to display “EFB =
CD”.
Servo is imposed automatically.
17. Press the
.
“R”
or
>
“R”
button so that the waveform of
the oscilloscope moves closer to the specified value.
In this adjustment, waveform varies at intervals of approx. 2%.
Adjust the waveform so that the specified value is satisfied as
much as possible.
In this adjustment, waveform varies at intervals of approx. 2%.
Adjust the waveform so that the specified value is satisfied as
much as possible.
Traverse Waveform
18. Press the
ENTER/YES “R”
button, display “EFB =
SAVE”
for a moment and save the adjustment results in the non-volatile
memory.
Next “EF CD ADJUST” (C08) will be displayed.
memory.
Next “EF CD ADJUST” (C08) will be displayed.
19. Press the Z (MD) button and take out the check disc.
Adjustment Location: BD board (see page 38)
13. FOCUS BIAS ADJUSTMENT
Procedure:
1. Load the continuously-recorded disc. (Refer to “5. USING
1. Load the continuously-recorded disc. (Refer to “5. USING
THE CONTINUOUSLY RECORDED DISC” (See page 31))
2. Press the
.
“R”
or
>
“R”
button to display “CPLAY1
MODE” (C34).
3. Press the
ENTER/YES “R”
button to display “CPLAY 1MID”.
4. Press the
MENU/NO “R”
button when “C =
AD =
)” is
displayed.
5. Press the
.
“R”
or
>
“R”
button to display “FBIAS
ADJUST” (C09).
6. Press the
ENTER/YES “R”
button to display “
/
a =
”.
The first four digits indicate the C1 error rate, the two digits
after “/ ” indicate ADER, and the 2 digits after “a =” indicate
the focus bias value.
after “/ ” indicate ADER, and the 2 digits after “a =” indicate
the focus bias value.
7. Press the
>
“R”
button and find the focus bias value at which
the C1 error rate becomes about 200 (refer to Note 2).
8. Press the
ENTER/YES “R”
button to display “
/
b =
”.
9. Press the
.
“R”
button and find the focus bias value at which
the C1 error rate becomes about 200.
10. Press the
ENTER/YES “R”
button to display “
/
c =
”.
11. Check that the C1 error rate is below 20 and ADER is 00. Then
press the
ENTER/YES “R”
button.
12. If the “(
)” in “
-
-
(
)” is above 20, press the
ENTER/
YES “R”
button.
If below 20, press the
MENU/NO “R”
button and repeat the
adjustment from step 2.
13. Press thet Z (MD) button and take out the disc.
Note 1:
The relation between the C1 error and focus bias is as shown in
the following figure. Find points A and B in the following figure
using the above adjustment. The focal point position C is auto-
matically calculated from points A and B.
the following figure. Find points A and B in the following figure
using the above adjustment. The focal point position C is auto-
matically calculated from points A and B.
Note 2:
As the C1 error rate changes, perform the adjustment using the
average vale.
average vale.
A
B
VC
Specification A = B
A
B
VC
Specification A = B
A
B
VC
Specification A = B
C1 error
about
200
200
B
C
A
Focus bias value
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