Sony Aiwa CX-JN20 Panduan Servis - Halaman 6

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CX-JN20/JN30

CD TEST MODE

• This mode can run the CD sled motor freely. Use this mode, for

instance, when cleaning the pickup.

Procedure:

1. In the status where AC plug is disconnected, while pressing

[CD]

the

button, connect the AC plug to turn the power on.

2. When enter this mode, it displays "CD TEST" and few sec-

onds later, all segments turn on of the fluorescent indicator

tube.

3. To release from this mode, disconnect the AC plug and turn

the power off.

In this mode, it operates as following table.

Button

Move the pick-up to outside track

Move the pick-up to inside track

Playback a CD

If it cannot focus on, it continuous focus search

When playback a CD: stop playback

When stop a CD:

display "READING" (blink)

continuous laser diode on

continuous focus search (not made focus on)

Pause, Tracking servo off

(ignore CLV error)

Operation

Purpose of use

Sled circuit check

Tracking circuit check

Mechanism operation check

Optical pick-up check

Servo block check

APC circuit check

Laser current measure

Focus search waveform check

Tracking balance check