Sony HCD-PX5 Service Manual page 43

QQ
3 7 63 1515 0
5-7. 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 "5-4. Precautions for Adjustments"
(See page 39) and execute the initial setting before the adjustment as
required.
Procedure:
[ENTER/YES]
1. Turn the
[ENTER/YES]
2. Press the
momentarily and initial setting will be executed, after which
"ADJ CLEAR" (C28) will be displayed.
5-8. 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:
[ENTER/YES]
1. Turn the
[ENTER/YES]
and press the
2. The display becomes "Ref=@@@.@" (@ is an arbitrary num-
ber) and the numbers which can be changed will blink.
3. Input the IOP value on the optical pick-up label.
TE
L 13942296513
To select the number : Turn the
To select the digit : Press the
button to lights up "IT" indicator, then press the
button.
[ENTER/YES]
4. When the
comes "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
6. "Complete!" will be displayed momentarily. The value will be
recorded in the non-volatile memory and the display will be-
come "Iop Write" (C05).
Display Procedure:
[ENTER/YES]
1. Turn the
2. "@@.@/##.#" is displayed and the recorded contents are dis-
played.
@@.@ indicates the IOP value on the optical pick-up label.
##.# indicates the IOP value after adjustment
3. To end, press the
(C26).
www
.
http://www.xiaoyu163.com
knob to display "ADJ CLEAR" (C28).
button. "Complete!" will be displayed
knob to display "Iop Write" (C05),
button.
[ENTER/YES]
knob.
[CD SYNC NORM SPEED]
[REC MODE]
button is pressed, the display be-
[ENTER/YES]
button.
knob to display "Iop Read"(C26).
[MENU/NO]
button to display "Iop Read"
x ao
y
i
http://www.xiaoyu163.com
8
5-9. 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. Turn the
(C03).
2. Press the
mode.
3. "TEMP =
displayed.
4. To save the data, press the
When not saving the data, press the
5. When the
SAVE" will be displayed and turned back to "TEMP ADJUST"
(C03) display then. When the
"TEMP ADJUST" (C03) will be displayed immediately.
Specified Value:
The "TEMP =
0F", "10 - 1F" and "20 - 2F".
Q Q 5-10. LASER POWER ADJUSTMENT
3 6 7 1 3
Check the IOP value of the optical pick-up before adjustments.
(Refer to 5-8. Recording and Displaying the Iop Information)
Connection:
BD (MD) board
CN105 pin 1 (I+3V)
CN105 pin 2 (IOP)
Procedure:
1. Set the laser power meter on the objective lens of the
optical pick-up. (When it cannot be set properly, turn the
[CURSOR
up)
Connect the digital voltmeter to CN105 pin 1 (I+3V) and
CN105pin 2 (IOP) on the BD (MD) board.
2. Turn the
(C04).
(Laser power : For adjustment)
3. Press the
$ ".
4. Turn the
u163
power meter becomes 0.85 to 0.91 mW. Press the
button after setting the range knob of the laser power meter, and
.
save the adjustment results. ("LD SAVE $
for a moment)
5. Then "LD 7.0 mW $
2 9 9 4 2 8
[ENTER/YES]
knob to display "TEMP ADJUST"
[ENTER/YES]
button to select the "TEMP ADJUST"
[OK]" and the current temperature data will be
[ENTER/YES]
[MENU/NO]
[ENTER/YES]
button is pressed, "TEMP =
[MENU/NO]
" should be within "E0 - EF", "F0 - FF", "00 -
1 5 0 5 8 2 9 9 4
laser
power meter
Optical pick-up
objective lens
digital voltmeter
+
–
]
knob to move the optical pick-
m ? M
[ENTER/YES]
knob to display "LDPWR ADJUST"
[ENTER/YES]
button once to display "LD 0.9 mW
m
[ENTER/YES]
knob so that the reading of the laser
co
" will be displayed.
9 9
button.
button.
button is pressed,
2 8 9 9
[ENTER/YES]
" will be displayed
43