1. How to Activate CD Test Mode2. How to Cancel CD Test Mode
Insert the AC plug while pressing the function CD button.Either one of the following operations will cancel the CD test
All FL display tubes will light up, and the test mode will bemode.
activated.Y Press the function button.Y Press the power switch button.
(except CD function button) Y Disconnect the AC plug
3. CD Test Mode Functions
When test mode is activated, the following mode functions from No.1 to No.5 can be used by pressing the operation keys.
Mode/No.Operation FL displayOperationContents
Start mode ActivationAll lamps lightY Test mode is activated.Y FL display check (All displays light.)
No.1
Search mode keyY Laser diode turns always ON.Y APC circuit check
(CD block power is ON.)Y Laser current measurement
Y Continual focus search(Laser current control. Across a
(The pickup lens repeats the full-resistor connected between emitter
swing up-down motion.)and GND.)
* Avoid continual searches that last forFOCUS SERVO
more than 10 minutes.Y Check focus search waveform
Y Check focus error waveform
(FOK/FZC are not monitored in the
No.2* NOTE 1search mode)
Play mode keyY Normal playbackFOCUS SERVO/TRACKING SERVO
Y Focus search is continued if TOCCLV SERVO/SLED SERVO
No.3cannot be read.* NOTE 1Check FOK/FZC
Traverse mode keyY During normal disc playbackTRACKING SERVO ON/OFF
Press once; tracking servo OFFTracking balance (traverse) adjustment
Press twice; tracking servo ON
No.4* NOTE 2
Sled mode key All lamps lightY Pickup moves to the outermost trackSLED SERVO
Y Pickup moves to the innermost trackCheck SLED mechanism operation
* NOTE 3
(During playback, machine operates
No.5normally.)
*NOTE 1: There are cases when the tracking servo cannot be locked owing to the protection circuit being operated when heat builds up
in the driver IC if the focus search is operated continually for more than 10 minutes. In these cases the power supply should
be switched off for 10 minutes until heat has been reduced and then re-started.
*NOTE 2: Do not press the or keys when the machine is in the status is active. If they are pressed, playback will not be possible
after the status has been canceled. If the or keys are pressed in the status, press the key and return to the start mode
(No.1).
*NOTE 3: When pressing the or keys, take care to avoid damage to the gears. Because the sled motor is activated when the Ţ or �
keys are pressed, even when the pick-up is at the outermost or innermost track.
4.Operation Outline
The operation of each mode is carried out in the direction of the arrows from the start mode as indicated in the following illustration.
No. 2No. 3
Search modePlay mode
No. 1
Start mode
(All FLs light up.)
No. 5No. 4
Sled modeTraverse mode
If the DISC DIRECT PLAY button is pressed, the machine performs the same operation as the PLAY button is pressed as shown. If
the tray is opened by pressing OPEN/CLOSE button during Play mode or Traverse mode, the machine returns to the Start mode.
18 |
ACEC
AIWA
