AIWA AM-NX1
Manual de Servicio

AM-NX1 SECTION 5 ELECTRICAL ADJUSTMENTS
Outline
� In this set, automatic adjustment of CD and MO can be performed by entering the test mode. However, before starting automatic adjustment, the memory clear, power supply adjustment and laser power check must be performed in the manual mode. � Operation in the test mode is performed with the remote commander. A key having no particular description in the text, indicates a remote commander key. � For the LCD display, the LCD on the remote commander is shown.

NV Reset
� Setting Method of NV Reset 1. Select the manual mode of the test mode, and set item number 021 NV Reset (see page 13).
LCD display

021 R e s N V
2. Press the
LCD display
� key.

CC

Precautions for Adjustment
1. Adjustment must be done in the test mode only. After adjusting, release the test mode. 2. Use the following tools and measuring instruments. � Test CD disc TDYS-1 (Part No. : 4-963-646-01) � SONY MO disc available on the market � Digital voltmeter � Laser power meter LPM-8001 (Part No. : J-2501-046-A) � Thermometer (using the Temperature Correction) � Personal computer � USB cable 3. Unless specified otherwise, supply DC 1.5V from battery terminals. 4. Switch position HOLD switch ............................................... ON

021 R e s O K ?
3. Press the
LCD display
� key once more.

021 R e s * * *
NV reset (after several seconds)

021 R e s e t !
4. Press the x key to quit the manual mode, and return to the test mode (display check mode).

Adjustment Sequence
1. NV Reset (item number: 021) (EEPROM clear*) 2. 3.    r  Temperature Correction (item number: 015)   r  Power Supply Manual Adjustment   (item number: 741 to 756)  Manual Mode r   Laser Power Check  r   Adjustment Required Before Overall  Adjustment (item number: 865, 866)   r  CD Overall Adjustment (item number: 031)  r  Overall Mode MO Overall Adjustment (item number: 034)   r  RESUME Clear (item number 043)  Manual Mode r 

Temparature Correction
� Adjustment Method of Temperature Correction 1. Select the manual mode of the test mode, and set the item number 015 (see page 13).
LCD display

015 S e t T m p
**: adjusted value

**

4. 5.

2. Measure the ambient temperature. 3. Adjust with [VOL +] or [VOL --] key so that the adjusted value (hexadecimal value) becomes the ambient temperature. (Initial value : 19h = 25�C, Adjusting range : 80h to 7fh (�128�C to +127�C)) 4. Press the � key to write the adjusted value. 5. Press the x key to quit the manual mode, and return to the test mode (display check mode).

6. 7. 8.

9. Rewriting the Patch Data (at replacement of the MAIN board) r 10. Rewriting the NV values * Although an adjustment value performed by power supply adjustment and electric offset adjustment is not cleared by NV reset, in the NV reset 2, all NV data is cleared and the value of NV returns to a default.

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