AIWA CSDMD50
Service Manual

3-3. AUTO SEQUENCE Adjustment (EFB/IVR/FOCUS AGC/TRACKING AGC adjustment)
Test disc: MDW-60. TGYS-1 When adjusting MO disc 1) Insert the test disc MDW-60. 2) Press the 9 button to display �ALL SV OFF�. 3) When the �EDIT� button is pressed, �AUTO ADJ� is displayed. When the adjustment is completed, �DONE� is displayed. (When �FAILED� appears, it means that the adjustment has failed.) 4) Press 9 button to display �ALL SV OFF�. Note: 1. If a test disc is dirty or has scratches, the complete adjustment may be not performed. Be sure to use a clean disc. 2. When adjusting the MO disc, the pre-recorded data on the MO disc is erased partly because WRITE POWER is on. Use an exclusive disc for adjustment. How to check IVR, EFB, and focus/tracking/sled gain. 1 Move the pick up to the center with 6 button and 5 button. 2 Press the MD 2 button to display �FOCUS ON!�. 3 Press the �ENTER� button to turn on �ALL SV ON�. 4 Press the 9 button, and press the �DISP� button twice. Check that value of the display �IV$**: EF$ ��� is within the specifications shown below. �**� ............................... 13-17 ���� ............................. 09-12 5 Repress the �DISP� button. Check that value of the display �Gf**t##s33� is within the range shown below. �**� ............................... 20-40 �##� ............................... 15-35 �33� ............................. 15-35 6 When the adjustment is completed, press the 9 button to display �ALL SV OFF�. When adjusting PIT disc 1) Insert the test disc TGYS-1. 2) Press the 9 button to display �ALL SV OFF�. 3) When the �EDIT� button is pressed, �AUTO ADJ� is displayed. When the adjustment is completed, �DONE� is displayed. (When the �FAILED� appears, it means that the adjustment has failed.) 4) When the adjustment is completed, press the 9 button to display �ALL SV OFF�. How to check IVR, EFB, and focus/tracking/sled gain Perform the same operations as the MO disc check. The data on the display must be within the following range. �IVR� ............................ 14-19 �EFB� ........................... 09-12 �Focus gain� ................. 2A-45 �Tracking gain� ............. 20-40 �Sled gain� .................... 20-40

3-4. Error Rate Check (PIT disc)
1) 2) 3) 4) 5) 6) 7) Insert the test disc TGYS-1. Move the pick up to the center with 6 button and 5 button. Press the �TAPE 1 2� button to display �SELECT PIT�. Press MD 2 button to display �FOCUS ON!�. Press the �ENTER� button to display �ALL SV ON�, and press the �DISP� button to display �Er00** 0000�. Check the value of ** is �30� or less. When the adjustment is completed, press the 9 button to display �ALL SV OFF�.

3-5. Record/Playback Error Rate Check (MO disc)
1) 2) 3) 4) 5) 6) 7) Insert the test disc MDW-60. Move the pick up to the center with 6 button and 5 button. Press the �TAPE 1 2� button to display �SELECT GRV�. Press the �VOLUME DOWN� button to display �REC Analog�. Press the MD 2 button to display �FOCUS ON!�. Press the �VOLUME DOWN� button after pressing the �ENTER� button to display �ALL SV ON�. When the �MD REC� button is repressed, the OWH moves. The recording starts from the 600 cluster. Then the display changes from �ALL SV ON� to �ADR**C##S�. 8) After recording of about 15 seconds, press the 9 button to display �ALL SV OFF�. 9) Press the �VOLUME UP� button to move up the OWH.

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