Aiwa NSX-A22 Service Manual download pdf (Page 45)

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CD TEST MODE

CD TEST MODE Ver. 3.0

1. Starting CD Test Mode

While pressing and holding down the CD OPEN/CLOSE button, insert the AC plug to outlet.

When test mode starts, the message, “TEST” appears on the display.

2. Exiting CD Test Mode

Press the POWER button or remove the AC plug from outlet.

* When the other function keys are pressed during playback, test mode stops.

3. Function of CD Test Mode

No Mode Function Key Display Movement Check

1 Start Mode All lit. FL all lit. • FL check

• Microcomputer check

2 Search Mode STOP button READING • LD constantly lit. • APC circuit check

• Focus search continuous • Laser current electricity measurement

movement *1, 2 • Focus search waveform check

• Spindle motor continuous kick • Focus error waveform check

(DRF is ignored during search mode.)

3 Play Mode PLAY button Normal • Normal playback • Each servo circuit check

• If TOC READ is unavailable, • DRF check

focus search is continued. • RF waveform check (Approx. 1.55Vp-p)

4 Traverse PAUSE Normal • Tracking servo OFF/ON • Tracking balance check

Mode button OFF and ON is repeated by every

press of the PAUSE button.

5 Sled mode FF button TEST • PU moves to the innermost position. *3

At the same time, lens is kicked

• Sled circuit check

toward inner position.

• Tracking circuit check

RWD button TEST • PU moves to the outermost position. *3

• Mechanism movement check

At the same time, lens is kicked toward

• PU check

outer position.

6 Spindle mode REC/ All lit. • When the button is pressed at the first • Spindle circuit check

REC MUTE time, spindle motor rotates forward • Spindle motor check

button (at rough speed).

At the second press, rotation is reversed.

At the third press, rotation stops.

* 1 … When Focus Search operates continuously more than 10 minutes, the protection circuit is activated due to heat generation of the driver IC.

In this case, turn off the power, wait for approximately 10 minutes so that heat is released, and then restart.

* 2 … When the Forcus Search fails three times, the gain is switched for CD-RW at the fourth time.

* 3 … 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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Aiwa NSX-A22 Service Manual Page 45

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