Sony HCD-M10 Service Manual page 37

6. Press the "R" or
. >
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.
7. Then,press the "R" or
.
"LDPWR CHECK" (C13).
8. Press the ENTER/YES "R" button once to display "L 0.9mW$
". Check that the reading of the laser power meter matches
with the specified value.
9. Press the ENTER/YES "R" button once more to display "L
7.0mW$ ". Check that the reading the laser power meter and
digital voltmeter satisfy the specified value.
Note down the digital voltmeter reading value.
Specified Value:
Laser power meter reading :
L 0.9 mW
SPECIFIED VALUE
L 7.0 mW
: Value on the optical pick-up label ±10%
Digital voltmeter reading
(Optical pick-up label)
For details of the method for
KMS260E
checking this value, refer to
20101
"8. Recording and Displaying
H0576
the Iop Information"
lop=57.6 mA in this case
lop (mA) = Digital voltmeter reading (mV)/1 ( Ω )
10. Press the MENU/NO "R" button to display "LDPWR CHECK"
(C13) and stop the laser emission.
(The MENU/NO "R" button is effective at all times to stop
the laser emission)
11. Press the . "R" or >
(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 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).
Note: After step 4, each time the ENTER/YES "R" button is pressed,
the display will be switched to "L 0.7mW$
Nothing needs to be performed here.
"R" button so that the reading
"R" button to display
>
0.80 to 0.96 mW
6.90 to 7.10 mW
"R" button to display "Iop Write"
"R" or "R" button.
. >
", "L 6.2mW$
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.
Note: Perform this function with the optical pick-up set at room temperature.
Procedure:
1. Press the "R" or
.
(C06).
2. Press the ENTER/YES "R" button and display "Iop [stop]".
3. After the display changes to "Iop = save?", 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= save?", 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.
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.
BD board
CN105 pin 4 (TE)
CN105 pin 6 (VC)
Connection:
BD board
CN105 pin 4 (TE)
CN105 pin 6 (VC)
Procedure:
1. Connect an oscilloscope to CN105 pin 4 (TE) and CN105 pin
6 (VC) on the BD board.
2. Load a disc (any available on the market). (Refer to Note 1)
3. Press the M button to move the optical pick-up outside the
pit.
4. Press the "R" or
.
ADJUST" (C07).
5. Press the ENTER/YES "R" button to display "EFB =
(Laser power READ power/Focus servo ON/tracking servo
"
OFF/spindle (S) servo ON)
6. Press the . "R" or
of the oscilloscope becomes the specified value.
(When the "R" or
.
"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)
Traverse Waveform
VC
Specification A = B
7. Press the ENTER/YES "R" button and save the result of
adjustment to the non-volatile memory ("EFB =
be displayed for a moment. Then "EFB =
displayed).
HCD-M10
"R" button to display "Iop NV Save"
>
oscilloscope
(DC range)
330 k Ω
+
–
10 pF
oscilloscope
(DC range)
+
V: 0.1 V/div
–
H: 10 ms/div
"R" button to display "EF MO
>
> "R" button so that the waveform
"R" button is pressed, the
>
A
B
SAVE" will
MO-W" will be
MO-R".
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