Hitachi VM-8480LE Service Manual page 18

« ADJUSTMENT OF CHROMA GAIN »
DATA WRITING INTO EEPROM.
« ADJUSTMENT OF CHROMA GAIN »
ADJUSTMENT FINISHED.
PRESS ANY KEY.
450mV
+ 20mV
Fig. 3-4
Fig. 3-5
160% + 5%
Before Starting Adjustment
4) Start the MAP.
MAIN MENU
MANUAL ADJUSTMENT PROGRAM
{D} AUTO FOCUS
Please select [A] - {E] or [ESC]
(2) Press D key.
AF ADJ. MENU.
AUTO FOCUS ADJUSTMENT
GO IS SIS IOI IOI
ROI IOI ICR ROA AOR Af
ei Sf I AGI RCAC ACER CE of oko aR ak ok oie it
(l
ADJUSTMENT OF ZOOM/FOCUS TRACKING
[2]
ADJUSTMENT OF AF NOISE LEVEL
{ESC]
RETURN TO MENU
Please select (1], [2] or [ESC]
om
(1) Zoom Trace Adjustment
Purpose:
To set the out-of-focus correction level during zooming.
incompleted Phenomenon:
Focus is lost during zooming.
Equipment/Jig:
Color Video Monitor
Backfocus Chart
Test Point:
Video Out (AV OUT)
Condition:
lens surface.
Light the chart with 200-400 lux.
Caution When Adjustment:
1) Measure the distance between the chart and lens
surface precisely.
2) Place the chart as parallel as possible to the lens
surface.
3) The backfocus chart should always be at the center
of the monitor screen when the zoom is set to the
wide-angle and telephoto ends.
4) The zoom trace adjustment procedure is completed
within 2 minutes after it is selected.
Procedure:
AF ADJ. MENU.
JOSIE SISO OI A ISIS SSIS II AOI CI I ACI i a JA ACC A CAC OR aR oR a A aR
AUTO FOCUS ADJUSTMENT
SOR OR A OR IGRG C ORC A R ORO CCR AACR AACA 2
2 ais AE OA RRC EE 2A
(1)
ADJUSTMENT OF ZOOM/FOCUS TRACKING
{2] ADJUSTMENT OF AF NOISE LEVEL
{ESC]
RETURN TO MENU
Please select [1], [2] or [ESC]
Press 1 key.
(2) AF Noise Level Adjustment
Purpose:
To set the noise level in the autofocus circuit.
incompleted Phenomenon: .
It takes time until a subject is brought into focus.
Correct focus is not obtained.
EquipmentJig:
Color Video Monitor
Test Point:
Video Out (AV OUT)
Condition:
Set the focus to AUTO.
Point at a light box without a chart inserted at a distance
of up to 10cm.
Caution When Adjustment:
1) Place the light box as parallel as possible to the lens
surface.
2)The AF noise level adjustment procedure will be
completed within thirty seconds after it is selected.
Procedure:
AF ADJ. MENU.
SHIR IRC ROI GR a AOI RICA RGR ESR fk OR FR RC KOI 2 CEC ACR RO ACCA ACK a
AUTO FOCUS ADJUSTMENT
2A kek fe oe oko CR 2 A
af ak EK RE A a ak ok aK Oa a
{V
ADJUSTMENT OF ZOOM/FOCUS TRACKING
[2] ADJUSTMENT OF AF NOISE LEVEL
{ESC] RETURN TO MENU
Please select [1], [2] or [ESC]
Press 2 key.