Pioneer PDR-04 - Manual (Page 49)

PDR-04
Code Key Name Function In Test Mode Explanation
II PAUSE
Tracking sen/o
close/open
Pressing this key when the focus servo and spindie servo
are operating correctly in closed loops puts the tracking
servo into a closed loop, displays the track number being
played back and the elapsed time on the front panel.
If the elapsed time is not displayed or not counted correctly,
it may be that something is our of adjustment, or that there is
some other problem.
This key is a toggle key and open/close the tracking servo
alternately. This key has no effect if no disc is mounted.
◄◄
•
MANUAL/
TRACK
SEARCH REV
Carriage reverse
(inwards)
Moves the pickup position toward the inner diameter of the
disc. When this key is pressed with the tracking servo in a
closed loop, the tracking servo automatically goes into an
open loop.
Since the motor does not automatically stop at the
mechanical end point in test mode, be careful with this
operation.
►►
•
►►1
MANUAL/
TRACK
SEARCH FWD
Carriage forward
(outwards)
Moves the pickup position toward the outer diameter of the
disc. When this key is pressed with the tracking servo in a
closed loop, the tracking servo automatically goes into an
open loop.
Since the motor does not automatically stop at the
mechanical end point in test mode, be careful with this
operation.
■ STOP Stop
initializes and the disc rotation stops.
The pickup and disc remain where they are when this key is
pressed.
▲
OPEN/CLOSE Disc tray open/close
Open/close the disc tray. This key is a toggle key and
open/close tray alternately.
Pressing this key when the disc is turning stops the disc,
then opens the tray.
This key operation does not affect the position of the pickup.
0
1
o
REC
i
REC MUTE
Maximum recording
power
Laser diode ON
Lights up the laser diode with maximum recording power and
normal EFM by pressing REC and REC MUTE keys in order.
* The laser diode may be damaged if adjustments are made
before pressing these keys.
DISPLAY OFF Focus offset switching
Switches the focus offset state.
DISPLAY OFF LED Lights UP : C/N in the best condition
Lights OFF : Jitter in the best condition
WRITE
Optical axis servo
switching
Switches the ON/OFF of the optical axis servo.
(MANUAL) LED Lights UP ; Optical axis servo ON
Lights OFF ; Optical axis servo OFF
[ How to Play Back a Disc in Test Mode ]
In test mode, since the servos operate independently, playing back a disc requires that you operate the keys in the correct
order to close the servos.
Here is the key operation sequence for playing back a disc in test mode.
FINALIZE I
PLAY
PAUSE II
Lights up the laser diode and closes the focus servo.
Starts the spindle motor and closes the spindle servo.
Closes the tracking servo.
Wait at least 2-3 seconds between each of these operations.
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