Aiwa XR-MD200, Руководство по обслуживанию

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2-9. Adjustment Mode
Name of adjustment: Temperature compensation adjustment
Test point: Check the indication on the display.
Jig: Thermometer
Adjustment procedure:
1) Start up the MD test mode and press the
9
button to show the message “ALL SV OFF” on display.
2) Press the “DISPLAY” (SHIFT+4) button to switch the display to “TEMP=$
⁄⁄
”.
3) Press the
;
(PAUSE) button to switch the display to “TEMP + **c: +00”.
4) Place the thermometer near the MD mechanism to measure the room temperature.
5) Adjust the indication value on display until the room temperature is the same as the indicated temperature ** on the display
using the
6
and
5
buttons. After adjustment is complete, press the “MD MARK” (SHIFT+10) button.
6) After the adjustment is completed, press the
9
button to return to the “ALL SV OFF” state.
7) After the above settings are completed, reduce or add the value indicated by the sharp sign (##) of “TEMP + **c: +00” from
or to the value indicated by the asterisk (**) of “TEMP + **c: +00”. The calculated value must be the room temperate.
Note:
If the room temperature cannot be measured, do not adjust the above item.
3. Laser Power Adjustment
Test point: Pickup laser output
Jig: Laser power meter
Adjusting procedure:
1)
Press the “EDIT” (SHIFT+8) button three times in the state of “ALL SV OFF” in order to switch the display to “LASER
WRITE”.
2) Press the
;
button once to show the “LASER = $**”.
3) Measure the laser output of the pickup unit using a laser power meter. Adjust the laser output value for 6.8±0.03 mW by pressing
the
6
and
5
buttons. After adjustment, press the “MD MARK” (SHIFT+10) button.
4) After the adjustment is completed, press the
9
button to return to the “ALL SV OFF” state.
Note:
If the laser output exceeds 7.0 mW, the pickup may be damaged.
4. Auto Sequence Adjustment (EFB Adjustment, IVR Adjustment, Focus AGC Adjustment and
Tracking AGC Adjustment)
Test disc: MDW-60, TGYS-1
When using the MO disc for adjustment:
1)
Insert the test disc MDW-60.
2) Press the
9
button to show “ALL SV OFF” on display.
3) Press the “MODE” button to show “SELECT GRV” on display.
4) When the “MD” button is pressed, “AUTO ADJ” is displayed. When the adjustment is completed, “DONE” is displayed. (If
“FAILED” is displayed, it shows that the adjustment has failed and is not performed.)
5) After the adjustment is completed, press the
9
button to return to the “ALL SV OFF” state.
Note: 1. Be sure to use the clean disc because the adjustment cannot be ensured if the dirty disc or the scratches on a disc is used.
2. Be sure to use an MO disc that is permitted to record a new data because the MO disc is tested by writing power and a part
of the recorded data is erased.
How to check the IVR, EFB, Focus/Tracking/Sled Gains
1 Move the optical pickup to the center track or its around of a disc using the
6
and the
5
buttons.
2 Press the
2
button to show “FOCUS ON!” on display.
3 Press the “ENTER” button to switch the mode to “ALL SV ON”.
4 Press the
9
button and press twice the “DISPLAY” button.
Check that the indication value on the display “IV$**:EF$ ⁄⁄ ” is within the range as follows below.
“**” ........................................ 03-07
“
⁄⁄ ” ...................................... 09-12
5
Press the “DISPLAY” (SHIFT+4) button again.
Check that the indication value on the display “Gf**t##s
33 ” is within the following ranges.
“**” ........................................ 20 to 40
“##” ........................................ 15 to 35
“
33 ” ...................................... 15 to 35
6 After the checking is completed, press the
9
button to return to the “ALL SV OFF” state.