Electrical Adjustments - Sony MZ-NE410CK Service Manual

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MZ-NE410/NE410CK
Ver 1.1 2003.03
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.
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 ter-
minals.
4. Switch position
HOLD switch ............................................... ON
Adjustment Sequence
1. NV Reset (item number: 021)
(EEPROM clear)
r
2. Temperature Correction (item number: 015)
r
3. Power Supply Manual Adjustment
r
4. Laser Power Check
r
5. CD Overall Adjustment (item number: 031)
r
6. MO Overall Adjustment (item number: 034)
r
7. RESUME Clear (item number 043)
r
8. Rewriting the Patch Data
(at replacement of the MAIN board)
r
9. Rewriting the NV values
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 14).
Set LCD display
021
# # # S C C
2. Press the
key.
ENT/u
Set LCD display
021
R e s O K ?
18
SECTION 5

ELECTRICAL ADJUSTMENTS

3. Press the
4. Press the x/CANCEL key to quit the manual mode, and
Temparature Correction
• Adjustment Method of Temperature Correction
1. Select the manual mode of the test mode, and set the item num-
2. Measure the ambient temperature.
3. Adjust with
Manual Mode
4. Press the
Power Supply Manual Adjustment
Overall Mode
• Adjustment sequence
1. VC1_LOW (PB) adjustment (item number : 741)
Manual Mode
2. VC1_HIGH (REC) adjustment (item number : 742)
3. VC2_LOW adjustment (item number : 743)
4. VC2_HIGH adjustment (item number : 744)
5. REG1 adjustment (item number : 745)
6. REG3_LOW1 adjustment (item number : 747)
7. REG3_LOW2 adjustment (item number : 748)
8. REG3_HIGH adjustment (item number : 749)
9. VREC_LOW (X2 speed) adjustment (item number : 751)
10. VREC_MIDDLE (X4 speed)adjustment (item number : 752)
11. VREC_HIGH (HEAD MOTOR) adjustment (item number : 753)
• Setting Method of Power Supply Manual Adjustment
1. Make sure that the power supply voltage is 1.5V.
2. Select the manual mode of the test mode (see page 14).
3. Set item number.
Note: Power supply adjustment auto item feed mode (page 23) is
key once more.
ENT/u
Set LCD display
021
R e s * * *
NV reset (after several seconds)
021
R e s e t !
return to the test mode (display check mode).
ber 015 (see page 14).
Set LCD display
015
# # # S * *
** : Adjusted value
[VOL +]
[VOL --]
or
(hexadecimal value) becomes the ambient temperature.
(Initial value : 19h = 25˚C, Adjusting range : 80h to 7fh
(– 1 28˚C to +127˚C))
key to write the adjusted value.
ENT/u
Adjustment must be done with the following steps.
available to perform the temperature Correction and Power
Supply Adjustment without entering the manual mode.
key so that the adjusted value

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