List Of Adjustment Items; Adjustments Needed After Replacing Major Components - Hitachi DZMV238EAU Service Manual

4.

List of Adjustment Items

4.1 Adjustments Needed After Replacing Major Components

The following table shows the adjustment items, their purposes, and whether or not adjustment is required after replacing
major components (items with a circle mark must be adjusted).
The items shown in the table below are the minimum that must be adjusted after replacing major components: If several
components have been replaced - or depending on the cause of a defect - more items may need to be adjusted.
(After replacing numerous components, make sure that all adjustments are correct.)
Item
Data Initialize
Data Initialize (*2)
Camera Adjustment
Sampling Pulse
Auto Iris Control
Shutter
B Matrix (*5)
White Balance
Chroma Gain
Autofocus
Zoom/Focus Tracking
AF Noise Level
Stabilizer
Stabilizer (*3)
Spot Noise
Spot Noise (*4)
*1: When replacing EEPROM or the board containing EEPROM (MAN board), be sure to perform "Data Initialize".
(Normally, "Data Initialize" is not necessary after replacing components.)
*2: Do not perform "Data Initialize" indiscriminately.
Since the data in EEPROM will be initialized (adjustment data is initialized) by "Data Initialize", all adjustments must be
performed thereafter.
*3: Do not perform "Stabilizer" adjustment indiscriminately.
Performing "Stabilizer" adjustment will write the camera shake correction value stored on adjustment floppy disk to
EEPROM. The camera shake correction value stored on adjustment floppy disk is an average of several hundred products
(several thousand products) adjusted at factory during production: It is not a value inherent in individual products.
*4: Perform the "Spot Noise" adjustment in the following cases:
When replacing components for which it is specified that adjustment is necessary after replacing them in the above
table
When white spot occurs under unusual use conditions or during use for extended period of time
*5: The "B MATRIX" adjustment applies only to the following models:
DZ-MV200A/MV200A(K)
DZ-MV208E(AU)/MV208E(SW)
DZ-MV200E/MV200E(UK)
Purpose
To initialize EEPROM
To measure the delay time in sampling
IC, and optimize pulse timing
To set iris control data
To measure the shutter open time,
thereby setting still image exposure
control data
To correct dispersion of tint
To input auto white balance control
data
To set color saturation for the reference
color temperature
To set out-of-focus correction level
during zoom
To set noise level in autofocus circuit
To write to EEPROM average value of
camera shake correction data during
production at factory
To correct spot noise
Circuit board Electrical part
MAN
IC1403
SE IC1001 IC1405
(*1)
IC1404
Miscellaneous
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