Cd Test Mode - Aiwa Z-KD770 Service Manual

CD TEST MODE

1. Starting Up the CD Test Mode
While pressing the "CD" button, connect the AC plug to the power outlet.
When the CD test mode starts up, it displays "TEST" and all displays will turn on (Start Mode) in approximately 15 seconds.
2. How to Cancel the CD Test Mode
To cancel the CD Test Mode, press the "POWER" button or disconnect the AC plug from the power outlet.
*Press other function keys to cancel the test mode while playing.
3. Function Description and How to Use the CD Test Mode
No. Mode How to Control
1 Start Mode
2 Search Mode STOP button
3 Play Mode PLAY button
4 Traverse PAUSE button
Mode
5 Sled Mode FF button
RWD button
* 1: If the focus search is continuously operated for more than 10 minutes, the driver IC will heat up high enough to trigger the protection circuit
to shut down the CD system. Turn off the main power and re-start it later.
* 2: When pressing FF or RWD buttons, take care to avoid damage to the gears. Because the sled motor is activated when the FF or RWD
buttons are pressed, even when the pick-up is at the outermost or innermost track.
Display Operations
All lit * FL all lit
CD * LD lights
* Continuous Focus Search *1
* Continuous Spindle Motor kick
Normal * Normal Playback
* If TOC reading is not possible,
Focus Search continues.
Normal * Tracking Servo OFF/ON
Switch between OFF and ON
when PAUSE button is pressed.
CD TEST * Shift PU to the outermost track.*2
Kick the lens to the
outermost track simultaneously
CD TEST * Shift PU to the innermost track.*2
Kick the lens to the
innermost track simultaneously.
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Check List
* Check FL
* Check Micom
* Check APC circuit
* Measure laser current
* Check Focus Search Waveform
* Check Focus Error Waveform
(Ignore any DRF in Search Mode)
* Check Each Servo circuit
* Check DRF
* Check tracking balance
* Check Sled circuit
* Check Tracking circuit
* Check Mechanism operation
* Check PU