Sony CMT-C5 / HCD-C5 Service Manual ▷ View online
41
HCD-C5
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 8.4 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.
matches with the specified value as described in the following
table.
9. Press the
ENTER/YES “R”
button once more to display “LD
8.4mW$ ”. Check that the reading the laser power meter and
digital voltmeter satisfy the specified value.
Note down the digital voltmeter reading value.
digital voltmeter satisfy the specified 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 two buttons of
VOL -
and
CD
Z simultaneously.
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 9, each time the
ENTER/YES “R”
button is pressed, the
display will be switched to “LD 0.7mW$ ”, “LD 6.2mW$ ”
and “LD WP ” Nothing needs to be performed here.
and “LD WP ” Nothing needs to be performed here.
The method of identifying the optical pick-up
(KMS-260B/260E)
(KMS-260B/260E)
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.
12. TRAVERSE ADJUSTMENT
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.
Connection:
SPECIFIED VALUE
KMS-260B
KMS-260E
KMS-260E
6.9 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
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”
SPECIFIED VALUE
KMS-260B
KMS-260E
KMS-260E
7.0 to 0.2 mW
7.25 to 0.25 mW
7.25 to 0.25 mW
UV adhesive agent
Optical pick-up
(KMS-260B/260E)
Pink
: KMS-260B
White : KMS-260E
UV adhesive agent =
+
–
–
oscilloscope
(DC range)
10 pF
330 k
Ω
CN105 pin
4
(TE)
CN105 pin
6
(VC)
BD (MD) board
+
–
–
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)
42
HCD-C5
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 M
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)
OFF/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)
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)
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).
will be displayed for a moment. Then “EFB = MO-W” will
be displayed).
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)
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)
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)
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.
A
B
VC
Specification A = B
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.
displayed for a moment)
Next “EF MO ADJUST” (C07) is displayed. The disc stops
rotating automatically.
13. Press the
MD
Z button and take out the disc.
14. Load the check disc (TDYS-1).
15. Press the .
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
MD
Z button and take out the check disc.
Adjustment Location: BD (MD) board (see page 44)
A
B
VC
Specification A = B
A
B
VC
Specification A = B
A
B
VC
Specification A = B
43
HCD-C5
14. ERROR RATE CHECK
14-1. 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 and display “CPLAY 1
MODE” (C34).
3. Press the
ENTER/YES “R”
button and display “CPLAY 1
MID”.
4. The display changes to “C = AD = )”.
5. Check that the C1 error rate is below 20.
6. Press the
5. Check that the C1 error rate is below 20.
6. Press the
MENU/NO “R”
button to stop playback, then press
the
MD
Z button and take out the check disc.
14-2. MO Error Rate Check
Procedure:
1. Load the continuously-recorded disc. (Refer to “5. USING THE
1. Load the continuously-recorded disc. (Refer to “5. USING THE
CONTINUOUSLY RECORDED DISC” (See page 37))
2. Press the .
“R”
or >
“R”
button to display “CPLAY 1
MODE” (C34).
3. Press the
ENTER/YES “R”
button to display “CPLAY 1MID”.
4. The display changes to “C1 = AD = )”.
5. If the C1 error rate is below 20, check that ADER is 00.
6. Press the
5. If the C1 error rate is below 20, check that ADER is 00.
6. Press the
MENU/NO “R”
button to stop playback, then press
the
MD
Z button and take out the disc.
15. FOCUS BIAS CHECK
Change the focus bias and check the focus tolerance amount.
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 37))
2. Press the .
“R”
or >
“R”
button to display “CPLAY 1
MODE” (C34).
3. Press the
ENTER/YES “R”
button twice to display “CPLAY
1 MID”.
4. Press the
MENU/NO “R”
button when “C1 = 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 20 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 20 and ADER is below 2.
7. Press the
ENTER/YES “R”
button and display “ / b
= ”.
Check that the C1 error is about 100 and ADER is below 2.
Check that the C1 error is about 100 and ADER is below 2.
8. Press the
ENTER/YES “R”
button and display “ / a
= ”.
Check that the C1 error is about 100 and ADER is below 2
Check that the C1 error is about 100 and ADER is below 2
9. Press the
MENU/NO “R”
button, then press the
MD
Z button
and take out the disc.
Note:
If the C1 error and ADER are above other than the specified
value at points a (step 8. in the above) or b (step 7. in the above),
the focus bias adjustment may not have been carried out prop-
erly. Adjust from the beginning again.
value at points a (step 8. in the above) or b (step 7. in the above),
the focus bias adjustment may not have been carried out prop-
erly. Adjust from the beginning again.
C1 error
about
220
220
B
C
A
Focus bias value
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 37))
2. Press the .
“R”
or >
“R”
button to display “CPLAY 1
MODE” (C34).
3. Press the
ENTER/YES “R”
button to display “CPLAY 1MID”.
4. Press the
MENU/NO “R”
button when “C = = ” is
displayed.
5. Press the .
“R”
or >
“R”
button to display “FBIAS
ADJUST” (C09).
6. Press the
ENTER/YES “R”
button to display “ / a =
T”.
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 220 (refer to Note 2).
8. Press the
ENTER/YES “R”
button to display “ / b =
T”.
9. Press the .
“R”
button and find the focus bias value at
which the C1 error rate becomes about 220.
10. Press the
ENTER/YES “R”
button to display “ / c =
T”.
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
MD
Z 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 value.
average value.
44
HCD-C5
16. AUTO GAIN CONTROL OUTPUT LEVEL ADJUSTMENT
Be sure to perform this adjustment when the optical pick-up is replaced.
If the adjustment results becomes “Adjust NG!”, the optical pick-up may be faulty or the servo system circuits may be abnormal.
If the adjustment results becomes “Adjust NG!”, the optical pick-up may be faulty or the servo system circuits may be abnormal.
16-1. CD Auto Gain Control Output Level Adjustment
Procedure:
1. Load the check disc (TDYS-1).
2. Press the . m
1. Load the check disc (TDYS-1).
2. Press the . m
“R”
or M >
“R”
button to display “AG Set (CD)” (C11).
3. When the
ENTER/YES “R”
button is pressed, the adjustment will be performed automatically.
“Complete!” will then be displayed momentarily when the value is recorded in the non-volatile memory, after which the
display changes to “AG Set (CD)” (C11).
display changes to “AG Set (CD)” (C11).
4. Press the
MD
Z button and take out the check disc.
16-2. MO Auto Gain Control Output Level Adjustment
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 “AG Set (MO)” (C10).
3. When the
ENTER/YES “R”
button is pressed, the adjustment will be performed automatically.
“Complete!” will then be displayed momentarily when the value is recorded in the non-volatile memory, after which the
display changes to “AG Set (MO)” (C10).
display changes to “AG Set (MO)” (C10).
4. Press the
MD
Z button and take out the test disc.
Adjustment and checking Loacation:
Note:
It is useful to use the jig for checking the waveform. (Refer to Servicing Notes on page 6)
D101
CN101
– BD (MD) BOARD (Component Side) –
IC101
CN105
IC151
IC190
1
7
1. I+3V
2. IOP
3. GND
4. TE
5. FE
6. VC
7. RF
2. IOP
3. GND
4. TE
5. FE
6. VC
7. RF
– BD (MD) BOARD (Conductor Side) –
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