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MZ-R909
• Setting method of NV reset
1. Select the manual mode of the test mode, and set item number
021 NV Reset (see page 13).
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).
• Change of adjusted values
In this set, some adjusted values were set in the manual mode at
the shipment, but these data will be cleared when the NV is reset.
Therefore, modify the adjusted values through the following pro-
cedure immediately after the NV was reset.
1. Item numbers in which the adjusted values are to be modified
Item number 861
Item number 862
Item number 863
Item number 864
Item number 865
Item number 866
2. Adjusted values modifying procedure
1) Select the manual mode of the test mode, and set item number
861 (see page 13).
2) Adjust with the
[VOL+] key (adjusted value up) or [VOL--]
key (adjusted value down) so that the adjusted value becomes
0F.
3) Press the X key to write the adjusted value.
4) Select the manual mode of the test mode, and set item number
862 (see page 13).
5) Adjust with the [VOL+] key (adjusted value up) or [VOL--]
key (adjusted value down) so that the adjusted value becomes
0B.
6) Press the X key to write the adjusted value.
861 V1num **
Remote commander LCD display
**
: Adjusted value
SECTION 5
ELECTRICAL ADJUSTMENTS
Outline
• In this set, automatic adjustment of CD and MO can be per-
formed by entering the test mode (see page 12).
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.
• For the LCD display, the LCD on the remote commander is
shown, but the contents of LCD display on the set are same.
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
Overall Mode
r
3. Temperature Correction (item number: 014)
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
NV Reset
Caution: The shipment data will be cleared when the NV is reset.
Therefore, change the adjusted values following the
Change of Adjusted Values immediately after the NV
was reset.
021 Res***
021 Reset!
Remote commander LCD display
NV reset (after several seconds)
021 ResNV CC
Remote commander LCD display
021 ResOK?
Remote commander LCD display
862 V1dat **
Remote commander LCD display
**
: Adjusted value