Adjustment > Adjustment Procedure

6-4-5 Autofocus

ADJUST MENU screen

 

 

MANUAL ADJUSTMENT PROGRAM for SERVICE STATION

 

Preparations:

 

MODEL NAME: ××××

1) Use the backfocus chart vertically (portrait mode) as

ADJUST MENU

 

 

shown in Fig. 6-4-3.

DATA INITIALIZE

 

 

 

 

 

2) Point at backfocus chart 1500mm ± 5 mm away from the

VIDEO LEVEL

 

 

BURST LEVEL

 

 

lens surface: Measure the distance precisely.

SAMPLING PULSE

 

AUTO FUCUS

 

1

3) Set the zoom to telephoto end, and make sure that the

AUTO IRIS CONTROL

 

 

 

center of backfocus chart appears.

MATRIX

 

 

CHROMA GAIN

 

 

4) If an illuminometer is available and the brightness of

SPOT NOISE

 

 

 

 

 

illumination can be varied, set the illuminance of

LCD

 

 

EVF

 

 

backfocus chart surface to 200-400 lx. This setting is not

 

 

 

necessary if the brightness of illumination cannot be

2

 

 

varied: Perform adjustment under indoor light that is as

EXECUTE

RETURN

 

 

 

bright as possible.

CONNECTION

 

 

Procedure:

1)Choose AUTO FOCUS on the adjustment menu screen.

2)Click the EXECUTE button on ADJUST MENU screen to start adjustment.

3)When adjustment is complete, the ADJUSTMENT FINISHED dialog will appear: Click the OK button in dialog to restore the ADJUST MENU screen.

If the AF ADJUSTMENT ERROR dialog appears, click the OK button in dialog, perform the following troubleshooting, and then execute readjustment:

a)Increase the illumination.

b)Set the distance between the backfocus chart and lens surface precisely to 1500mm ± 5 mm.

If the AF adjustment error dialog still appears even after troubleshooting, the connection of lens unit may be incorrect or the unit may be faulty.

ADJUSTMENT FINISHED dialog

FINISHED

ADJUSTMENT FINISHED.

 

OK

 

 

 

3

 

 

 

 

 

 

 

 

 

 

AF ADJUSTMENT ERROR dialog

ERROR

Lens Adjustment Error

OK

Fig. 6-4-3 Backfocus Chart

6 - 28

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Hitachi service manual Autofocus, Preparations
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