Camera System Adjustments; Zoom Key Center Adjustment; Hall Adjustment - Sony MVC-FD85 Service Manual

1-4.

CAMERA SYSTEM ADJUSTMENTS

Before perform the camera system adjustments, check that the
specified values of "VIDEO SYSTEM ADJUSTMENT" are
satisfied.
Data setting during camera system adjustments:
Perform the following data setting before the camera system
adjustments.
1) Select page: 0, address: 01, and set data: 01.
2) After writing down the original data of the following addresses,
input the following data.
Page Address
E 43
E 6C
E 8F
B 67
B CC
Note: Press the PAUSE button of the adjustment remote commander
each time to set the data.
After completing the camera system adjustments, release the
data setting.
1) Select page: 0, address: 01, and set data: 01.
2) Select the above addresses, and input the orignal data writen
down at step 2).
Note: Press the PAUSE button of the adjustment remote commander
each time to set the data.
3) Select page: 0, address: 01, and set data: 00.

1. Zoom Key Center Adjustment

Set the A/D value center of the microprocessor to the center voltage
of the zoom key.
If deviated, the zoom lens operates of itself ,even if the zoom key is
the center position.
Mode STILL
Subject Arbitrary
Measurement Point Display data of page: 2, address: 5C
Measuring Instrument Adjusting remote commander
Adjustment Page D
Adjustment Address 89
Note: Don't touch the zoom lever during adjustment.
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 2, address: 5C, read the data, and this data is named
D .
5C
3) Select page: D, address: 89, set the following data.
D When 6C D
(
5C
6C (When 5D D
8A (When 8A<D
5C
Note: When D <5D or 99<D
5C
4) Press the PAUSE button of the adjustment remote commander.
5) Select page: 0, address: 01, and set data: 00.
Data Remark
10
FF FD90 model only
00
00
04 FD90 model only
8A)
5C
<6C)
5C
99)
, the zoom key is defective.
5C

2. HALL Adjustment

For detecting the position of the lens iris, adjust the hall AMP gain
and offset.
Mode
Subject
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note 1: Displayed data of page 1 of the adjustment remote commander.
1 : 00 : XX
Note 2: If the data of page: 6, address: 02 is "01", select page: 6, address:
01, set data: 00, and press the PAUSE button.
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 6, address: 94, and set data: 15.
3) Select page: 6, address: 95, and set data: 7D.
4) Select page: 6, address: 01, set data: 6D, and press the PAUSE
button of the adjustment remote commander. (The HALL
adjustment is performed and the adjustment data is stored in
page: F, address: 2E, 2F, 34 and 35.)
5) Select page: 6, address: 02, and check that the data is "01".
6) Select page: 6, address: 01, set data: 00, and press the PAUSE
button.
Checking method:
1) Select page: 0, address: 03, and set data: 03.
2) Select page: 6, address: 01, set data: 01, and press the PAUSE
button.
3) Select page: 1, and check that the display data (Note1) during
IRIS OPEN satisfies the specified value.
4) Select page: 6, address: 01, set data: 03, and press the PAUSE
button.
5) Select page: 1, and check that the display data during IRIS
CLOSE satisfies the specified value.
Processing after Completing Adjustments:
1) Select page: 6, address: 01, set data: 00, and press the PAUSE
button.
2) Select page: 6, address: 94, and set data: 00.
3) Select page: 6, address: 95, and set data: 00.
4) Select page: 0, address: 03, and set data: 00.
5) Select page: 0, address: 01, and set data: 00.
5-14
STILL
All black
(Cover the lens with a black cap)
Display data of page 1 (Note 1)
Adjustment remote commander
F
2E, 2F, 34, 35
13 to 17 during IRIS OPEN
7B to 7F during IRIS CLOSE
Display data