AIWA XRMD90
Service Manual

3. Laser Power Adjustment
Test point Pickup laser output Jig: Laser power meter Adjusting procedure: 1) Press the �MD EDIT� button three times in the state of �ALL SRV OFF� in order to switch the display to �LASER WRT, 2) Press the II (SET) 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 M and+ buttons. After adjustment, press the �ENTER� button. 4) After the adjustment is completed, press the E button to return to the �ALL SRV OFF� state.
Note:

If the laser output exceeds 7.0 mW, the pickup maybe damaged,

4. Auto Sequence Adjustment Tracking AGC Adjustment)

(EFB Adjustment,

IVR Adjustment,

Focus AGC Adjustment

and

Test disc: MDW-60, TGYS-1 When using the MO disc for adjustment 1) Insert the test disc MDW-60. 2) Press the s button to show �ALL SRV OFF on display. 3) Press the �MD MODE button to show �SELECT GRV� on display. 4) When the �MD PLAY� button is pressed, �AUTO ADJ� is displayed. When the adjustment is completed, �DONE (If �FAILED is displayed, it shows that the adjustment has failed and is not performed.) 5) After the adjustment is completed, press the s button to return to the �ALL SRV OFF� state.
Note: 1.

is dkplayed,

2.

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. 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/�I!rackinglSled Gains @ Move the optical pickup to the center track or its around of a disc using the w and the * buttons. @ Press the ® button to show �FOCUS ON!� on display. @ Press the �ENTER� button to switch the mode to �ALL SRV ON. @ Press the s button and press twice the �DISPLAY� button. Check that the indication value on the display �IV$**:EF$VO is within the range as follows below, �**,7 ................. . ................. .. 03-07 �00 ...................................... 09-12 @ Press the �DISPLAY button again. Check that the indication value on the display �Gf**t##sAA� is within the following ranges. �**,, .......... .. ................. ........ 20 to 40
C�##,

@

15 to 35 �M�� . ..................................... 15 to 35 After the checking is completed, press the s button to return to the �ALL SRV OFF� state,

........................................

When using the PIT disc for adjustment 1) Insert the test disc TGYS-1. 2) Press the s button to show �ALL SRV OFF� on display. 3) When the �MD PLAY� button is pressed, �AUTO ADJ� is shown on display, When adjustment is completed, �DONE� is displayed. (If �FAILED is displayed, it shows that the adjustment has failed and is not performed.) 4) After the adjustment is completed, press the s button to return to the �ALL SRV OFF� state. Checking Method of IVR, EFB, FocusiTracking/Sled Gain Perform the same operation as that of the �When using the MO disc for adjustment� and confirm that the values on the display are within the following ranges. �IVY .................................... 13 to 17 . �EFB� .................................... 09 to 12 �Focus gain� .......................... 2A to 45 �Tracking gain� ..................... 20 to 40 �Sledgain�� . ............................2Oto4O

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