CDX-M1026ZG
6.2 CD ADJUSTMENT
1)Precautions
YThis unit uses a single power supply (+5V) for the reg-Y Resetting the test mode
ulator. The signal reference potential, therefore, isDC Regulated Power Supply power OFF.
connected to REFO(approx. 2.5V) instead of GND.
If REFO and GND are connected to each other by mis-Y Disc detection during loading and eject operations is
take during adjustments,not only will it be impossibleperformed by means of a photo transistor in this
to measure the potential correctly,but the servo willunit.Consequently,if the inside of the unit is exposed
malfunction and a severe shock will be applied to theto a strong light source when the outer casing is
pick-up. To avoid this,take special note of the follow-removed for repairs or adjustment,the following mal-
ing.functions may occur.
Y Do not connect the negative probe of the measuring*During PLAY, even if the eject button is pressed,the
equipment to REFO and GND together. It is especiallydisc will not be ejected and the unit will remain in
important not to connect the channel 1 negativethe PLAY mode.
probe of the oscilloscope to REFO with the channel 2*The unit will not load a disc.
negative probe connected to GND.When the unit malfunctions this way,either re-posi-
Since the frame of the measuring instrument is usual-tion the light source,move the unit or cover the
ly at the same potential as the negative probe,changephoto transistor.
the frame of the measuring instrument to floating sta-
tus.Y When loading and unloading discs during adjustment
If by accident REFO comes in contact withprocedures,always wait for the disc to be properly
GND,immediately switch the regulator or power OFF.clamped or ejected before pressing another key.
Otherwise, there is a risk of the actuator being
YAlways make sure the regulator is OFF when connect-destroyed.
ing and disconnecting the various filters and wiring
required for measurements.Y Turn power off when pressing the button TR+ or the
button TR- key for focus search in the test mode. (Or
YBefore proceeding to further adjustments and mea-else lens may stick and the actuator may be dam-
surements after switching regulator ON,let the playeraged.)
run for about one minute to allow the circuits to sta-
bilize.Y SINGLE/4TRK/10TRK/32TRK will continue to operate
even after the key is released.Tracking is closed the
Y Since the protective systems in the unitOs software aremoment C-MOVE is released.
rendered inoperative in test mode,be very careful to
avoid mechanical and /or electrical shocks to the sys-Y JUMP MODE resets to SINGLE as soon as power is
tem when making adjustment.switched off.
YThis unit is adjusted in a combination with the CD con-
troller tool(CEP-323). Each regulator key should be
operated at the unit.
With the CEP-323 taken up for reference, a descrip-
tion will be given below concerning how to enter into
the test mode, including key operations. The key in
the adjustment text is also one of the CEP-323 keys.
YHow to enter into the test mode
1. Setup the POWER switch ON and PMM switch
RUN of CEP-323.
2. DC Regulated Power Supply power ON.
3. Pressing the RESET switch of CEP-323.
4. Wait for 10 seconds.
5. Pressing the TESTIN switch of CEP-323.
6. Insert the magazine assy.
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ACEC
