Cd Test Mode - Aiwa XR-X7 Service Manual

CD TEST MODE

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1. How to Start the CD Test Mode
While pressing the CD FUNCTION button, insert the AC plug to the power outlet.
When the test mode started, all lights on the display are lit.
2. How to Exit the CD Test Mode
Press the POWER button or press the other FUNCTION buttons or disconnect the AC plug.
3. Function and Usage of the CD Test Mode
Button for
No Mode
Activation
1 Start Mode
2 Search Mode PLAY button
(without disc)
3 Play Mode PLAY button
4 Sled Mode FF button
RWD 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
TE
L 13942296513
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 FF or RWD button is being pressed even if the pickup is located in
the innermost track or the outermost track.
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Display
All lights are
lit.
Normal • LD illuminates all the time
• Focus search continues
• Spindle motor continuous kick
Normal • Normal playback
• If TOC cannot be read, focus
• Pickup moves to the inner
• Pickup is moves to the outer
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Operation
operations *1
search is continued
circumference *2
circumference *2
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Contents
• FL check
• Microcomputer 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
• Sled circuit check
• Mechanism operation check
• Pickup check
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