Sharp MD X5 Service Manual download pdf (Page 15)

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MD-X5H/CP-X5H

CD TEST MODE

CD test mode setting

Any TEST mode can be set as shown below by pressing several buttons.

Holding down TACK UP/CUE and CD PLAY/PAUSE, turn on POWER.

Test Mode

Function - CD TEST mode

Test mode setting

CD TEST mode indication

Open/Close operation is button.

The pickup can be moved with the ( ) or ( ) button.

<TRACK>

On-spot tracking

Servo OFF playback

On-spot tracking

Servo ON playback

<PLAY> button input - TOC. Initialization is executed, and normal PLAY is executed.

Press the <STOP> button. Stop

If the following button is pressed during PLAY, any track No. can be specified directly.

<TUNER (BAND)> button: Track 4

<AUX> button: Track 9

<X-BASS> button: Track 15

Note:

The pickup can be moved with the ( ) or ( ) button only in STOP state.

Cancel method: POWER OFF

Initialization is not executed.

CD section

The CD system has the following automatic adjusting function. Therefore readjustment is not required when the pickup is

replaced. Since adjustment of this CD unit is not required, the combination of PWB and laser pickup unit is not restricted.

Automatic adjustment items

1. Focus Offset (Fig. 15-1)

2. Tracking Offset (Fig. 15-2)

3. E/F Balance (Tracking Error Balance) (Fig. 15-3)

4. R/F level AGC function (HF level: Constant)

5. Tracking gain RF level automatic follow-up

This adjustment is executed whenever the disc is

changed. Therefore the optimum setting is used for

playback of each disc.

Figure 15-1

Figure 15-2

Figure 15-3

0.1s

0.50 V

IC1 20 FE

0.1s

0.50 V

IC1 7 TE

Focus Offset

Adjustment

Tracking Offset

Adjustment

10ms

0.50 V

IC1 20 FE

10ms

0.50 V

IC1 7 TE

Tracking

Offset

Adjustment

200 ms

1V/diV

IC 1 15

200 ms

1V/diV

IC 1 7

Tracking/

Error Balance

Adjustment

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 103 104

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