Sony HCD-M333 Service Manual page 42

HCD-M333
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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 38) and execute the initial setting before the adjustment as re-
quired.
Procedure:
1. Press the "R" or
. >
"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.
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.
Recording Procedure:
1. Press the "R" or
. >
(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
To select the digit : Press the TIMER SET "R" button.
4. When the ENTER/YES "R" button is pressed, the display
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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).
Display Procedure:
1. Press the . "R" or > "R" button to display "Iop Read"(C26).
2. Press the ENTER/YES "R" button.
3. "@@.@/##.#" is displayed and the recorded contents are
displayed.
@@.@ indicates the Iop value on the optical pick-up label.
##.# indicates the Iop value after adjustment.
4. 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.
Note:
1. Usually, do not perform this adjustment.
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.
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 "R" or
. >
ADJUST" (C03). www
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.
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"R" button to display
"R" button to display "Iop Write"
"R" or "R" button.
. >
"R" button to display "TEMP
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8
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 MENU/NO "R" button is pushed, it returns to the
display of "TEMP ADJUST" (C03) immediately.
Specified Value:
The "TEMP = " should be within "E0 - EF", "F0 - FF", "00 -
0F", "10 - 1F" and "20 - 2F".
10. Laser Power Adjustment
Before starting adjustment:
The adjustment value differs depending on the types (KMS-262A
or KMS-262E) of optical pickup. Be sure to confirm the type name
before starting adjustment.
pink
UV adhesive =
white : KMS-262E
UV adhesive
Check the Iop value of the optical pick-up before adjustments.
(Refer to 8. Recording and Displaying the Iop Information)
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Connection:
Optical pick-up
objective lens
BD (MD) board
CN105 pin 1 (I+3V)
CN105 pin 2 (Iop)
Procedure:
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
"R" button to move the optical pick-up)
M
Connect the digital voltmeter to CN105 pin 1 (I+3V) and
CN105pin 2 (Iop) on the BD (MD) board.
2. Press the "R" or
.
ADJUST" (C04).
(Laser power : For adjustment)
3. Press the ENTER/YES "R" button once to display "L 0.93
mW $ ".
4. Press the . "R" or
meter reading matches with the specified value.
Press the ENTER/YES "R" button after setting the range knob
of the laser power meter to 10mW, and save the adjustment
results. ("L SAVE $
u163
Specified Value:
KMS-262A
.
KMS-262E
5. Then "L 8.65 mW $
2 9 9 4 2 8
: KMS-262A
Optical pick-up
(KMS-262A/262E)
1 5 0 5 8 2 9 9 4
laser
power meter
digital voltmeter
+
–
"R" button or
m
"R" button to display "LDPWR
>
> "R" button until the laser power
m
" will be displayed for a moment)
co
0.85 to 0.91mW
0.90 to 0.95mW
" will be displayed.
9 9
2 8 9 9