ELECTRICAL ADJUSTMENT-1/11
IntroductionNV Reset
Y All electrical adjustments consisting of the CD adjustments, MONote : The sets that use the microprocessor version 1.000 are
adjustments and electrical offset adjustment are automaticallyadjusted of their setup data by the MANUAL mode in the
performed when the machine enters the AUTO Adj. Mode of the testfactory before shipment. If the NV reset is executed in these
mode.sets, the setup data will be cleared. If the NV reset is
However, note that you must clear the contents of the memory,executed in the sets of version 1.000, change the adjustment
must adjust the regulated power supply voltages and must check thevalue in accordance with the adjustment value change
laser power before entering the AUTO Adj. Mode of the test mode.procedure immediately after the NV reset is executed.
Y All keys to be operated in this section are the keys of the main unit
unless otherwise specified.Y How to execute the NV Reset
Y All displays on the LCD that are mentioned in this section are the1. Enter the MANUAL Mode of the test mode. Select the item
displays on the LCD of remote control. Note that the same displaynumber 021: NV Reset. (Refer to TEST MODE on page 27.)
appears on the LCD screen of the main unit.Display on remote control LCD
Notes on electrical adjustment
1. Enter the test mode to perform all of the electrical adjustments.2. Press the O;� key.
When adjustments are completed, exit the test mode.Display on remote control LCD
2. Use the following jigs and measuring equipment.
Y Test CD disc TDYS-1 or TGYS-13. Press the O;� key again.
Y Already pre-recorded MO disk MDW-74 Display on remote control LCD
(Already pre-recorded)
Y Digital VOM
NV Reset (Several seconds later)
Y Laser power meter
Y Thermometer (Used for temperature compensation)
4. Press the O9� key to exit the MANUAL Mode and to return to
3. Supply DC 3 V to the DC IN 3V jack (J601) from external
the test mode (display check mode).
regulated power supply (or AC adapter) unless otherwise specified.
Y Changing Adjustment Value
4. Switch setup position
The sets that use the microprocessor version 1.000 are adjusted of their
SYNCHRO REC switch .......... OFFsetup data by the MANUAL mode in the factory before shipment. If
HOLD switch ........................... OFFthe NV reset is executed in these sets, the setup data will be cleared. If
the NV reset is executed in the sets of version 1.000, modify the
Order of adjustmentsadjustment values by executing the procedure shown below
Be sure to perform the adjustments in the following order.immediately after the NV reset is executed.
1. NV Reset1. Item numbers whose adjustment values must be modified.
MANUAL Mode.
(Clears the non-volatile memory.)Y Item number 832
Y Item number 862
d
AUTO Adj. ModeY Item number 871
2. Power Supply Manual AdjustmentY Item number 872
d
2. Adjustment Value Change Procedure
3. Temperature Compensation
MANUAL Mode.1) Enter the MANUAL Mode of the test mode. Select the
(Item number014)
item number 832. (Refer to TEST MODE on page 27.)
d
4. Laser Power CheckMANUAL Mode.Display on remote control LCD
d
5. Electrical Offset Adjustment
Note : Be sure to perform this AUTO Adj. Mode
: Adjustment value
adjustment while any disc
is not inserted.2) Press the OVOL +� key (adjustment value increases) and/or
dthe OVOL �� key (adjustment value decreases) so that the
6. CD AUTO Adjadjustment value becomes E 4.
AUTO Adj. Mode
d3) Press the O;� key to write the adjustment value in memory.
7. MO AUTO Adj.
d
8. RESUME ClearMANUAL Mode.
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