Cd Test Mode - Aiwa NSX-DS50 Service Manual

CD TEST MODE

1. How to Start the CD Test Mode
While pressing the FUNCTION button, insert the AC plug to the power outlet.
When the test mode is started, the message [CD TEST] is displayed.
2. How to Exit the CD Test Mode
Press the POWER button or disconnect the AC plug.
* When any key other than PRESET is pressed during play mode, the machine exits the test mode.
3. Function Descriptions and Application of the CD Test Mode
No Mode Operation
1 Start mode
2 Search CLEAR
mode button
3 Play mode PRESET
button
4 Traverse SET
mode button
5 Sled mode UP button
DOWN
button
6 Spindle REC/REC
mode MUTE
button
*1: The driver IC heats up and the protection circuit starts working when the focus search is continued for 10 minutes or longer.
There can be a case that operations cannot be performed correctly.
In such a case, turn off the main power. After cooling down the machine, restart the machine.
*2: Be careful not to damage the gear because the sled motor rotates while the UP or DOWN button is being pressed even if the
pick-up is located in the innermost track or the outermost track.
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Display
All indicators light • All FL indicators light
READING • LD illuminates all the time
• Focus search continuous
operations *1
• Spindle motor continuous kick
Normal • Normal playback
• If TOC cannot be read, focus
search is continued
Normal • Tracking servo OFF/ON
• Each time PAUSE button is
pressed, the tracking servo
repeats turning OFF/ON
CD TEST • Pickup moves to the inner
circumference *2
At the same time, lens kicks to
the inner circumference
CD TEST • Pickup moves to the outer
circumference *2
At the same time, lens kicks to
the outer circumference
All indicators light • The spindle motor rotates
forward (rough speed) by
pressing the button and
rotates backward by pressing
one more time and stops by
pressing again
– 34 –
Function
• FL check
• Microprocessor check
• APC circuit check
• Laser current measurement
• Focus search waveform check
• Focus error waveform check
(DRF in the search mode is
ignored)
• Each servo circuit is checked
• DRF check
• Tracking balance check
• Sled circuit check
• Tracking circuit check
• Mechanism operation check
• Pickup check
• Spindle circuit
• Spindle motor
Checking item