Autofocus; Zoom/Focus Tracing Adjustment - Hitachi DZMV238EAU Service Manual

7.

Autofocus

Refer to "3. Starting Adjustment Program (MAP)" in advance, start MAP and
display the main menu on PC display. If an error message appears on PC
display during adjustment, perform troubleshooting, referring to "10. Error
Messages".
Before starting adjustment:
1) Input C to PC on the main menu screen to display the AF menu screen.
2) Input the appropriate adjustment number to PC. (*1)
*1: Pressing the Esc key on the AF menu screen will restore the main menu
screen.

7.1 Zoom/Focus Tracing Adjustment

Phenomenon due to incomplete adjustment:
Focus is lacking during zooming.
Status during adjustment:
Point at backfocus chart 1500 ±5 mm away from the lens surface.
Set the illumination of backfocus chart to 200-400 lx.
Cautions during adjustment:
Measure the distance between the chart and lens surface precisely.
Place the chart as close to parallel as possible to the lens surface.
Note that the backfocus chart should always be at the center of monitor
screen when the zoom is set to either wide-angle or telephoto end.
Normally, the zoom/focus tracking adjustment will be completed within 2
minutes after it is selected. If the adjustment is not completed after several
minutes have elapsed, turn off the PC and DVD video camera/recorder,
check to see if the chart and lighting are correct, and then perform
readjustment.
Do not allow any obstacle between the chart and lens during adjustment.
Procedure:
1) Input 1 to PC on the AF menu screen.
2) Follow the instructions on PC display thereafter. (The adjustment will be
complete when the AF menu screen is restored.)
Main menu screen
***********************************************************
MANUAL ADJUSTMENT PROGRAM
***********************************************************
[A] DATA INITIALIZE
[B] CAMERA ADJUSTMENT
[C] AUTO FOCUS
[D] STABILIZER
[E] SPOT NOISE
[ESC] END
Please select [A] - [E] or [ESC]
Input C to PC
AF menu screen
***********************************************************
AUTO FOCUS ADJUSTMENT
***********************************************************
[1] ADJUSTMENT OF ZOOM/FOCUS TRACKING
[2] ADJUSTMENT OF AF NOISE LEVEL
[ESC] RETURN TO MENU
Please select [1], [2] or [ESC]
AF menu screen
***********************************************************
AUTO FOCUS ADJUSTMENT
***********************************************************
[1] ADJUSTMENT OF ZOOM/FOCUS TRACKING
[2] ADJUSTMENT OF AF NOISE LEVEL
[ESC] RETURN TO MENU
Please select [1], [2] or [ESC]
Input 1 to PC
Follow the instructions on PC display
thereafter. (The adjustment will be
complete when the AF menu screen is
restored.)
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