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MZ-N505
SECTION 5
ELECTRICAL ADJUSTMENTS
OUTLINE
• In this set, automatic adjustment of CD and MO can be per-
formed 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.
• A key having no particular description in the text, indicates a
set key.
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)
3. Unless specified otherwise, supply DC 3V from the DC IN
3V jack (J601).
4. Switch position
HOLD switch ............................................... ON
ADJUSTMENT SEQUENCE
1. NV Reset (EEPROM clear)
Manual Mode
r
2. Power Supply Manual Adjustment
Manual Mode
r
3. Temperature Correction (item number: 015)
r
Manual Mode
4. Laser Power Check
r
5. Electrical Offset Adjustment
Caution: This adjustment must be made with
no disc loaded.
r Overall Mode
6. CD Overall Adjustment
r
7. MO Overall Adjustment
r
Manual Mode
8. RESUME Clear
Note: If the version of the microcomputer is 1.000 or later, “3. Tempera-
ture Correction” and “2. Power Supply Manual Adjustment” can
be performed continuously in reverse order with pressing the
[END SEARCH] key in the overall adjustment mode.
NV RESET
Caution: The shipment data will be cleared when the NV is reset.
Therefore, change the NV adjusted values following the
Change of NV Adjusted Values immediately after the
NV was reset.
Change the NV adjustment values according to the mi-
crocomputer version.
• Setting Method of NV Reset
1. Select the manual mode of the test mode, and set item number
021 (see page 14).
2. Press the X key.
3. Press the X key once more.
4. Press the
x key to quit the manual mode, and return the test
mode (display check mode).
021 Res***
Remote commander LCD display
021 Reset!
Remote commander LCD display
NV reset (after several seconds)
021 ###SCC
Remote commander LCD display
###
: Address
021 ResOK?
Remote commander LCD display