System Control System Adjustment; Battery End Adjustment (Fc-67 Board) - Sony MVC-FD81 Service Manual

1-5.

SYSTEM CONTROL SYSTEM ADJUSTMENT

1. Battery End Adjustment (FC-67 board)

Set the battery end voltage.
If the voltage is incorrect, the life of the battery will shorten.
The image at the battery end will also be rough.
Mode Camera
Subject All black (Cover the lens with a black
cap)
Measurement Point LCD display of the adjustment remote
commander
Measuring Instrument
Adjustment Page F
Adjustment Address 18 to 1C
Switch setting
1) AUTO FOCUS / MANUAL ................................. MANUAL
Connection:
1) Connect the regulated power supply to the battery terminal and
connect the digital voltmeter to CN301 of DD-119 board as
shown in Fig. 5-1-19.
Adjusting method:
1) Adjust the output voltage of the regulated power supply so that
the digital voltmeter display is 6.1 ± 0.1Vdc.
2) Turn on the HOLD switch of the adjustment remote commander.
3) Turn on the power.
4) Select page: 0, address: 01, and set data: 01.
5) Decrease the output voltage of the regulated power supply so
that the digital voltmeter display is 5.80 ± 0.01Vdc.
6) Select page: 3, address: 0D, read the data, and this data is named
Dref.
7) Select page: F, address: 18, set data: Dref, and then press the
PAUSE button of the adjustment remote commander.
8) Convert Dref to decimal notation, and obtain Dref'. (Refer to
Table 5-2-1. "Hexadecimal-decimal conversion table" of "5-
2.Service mode")
9) Calculate D ', D ', D
19 1A 1B
(decimal calculation), convert it to a hexadecimal number, and
input each adjustment address.
Address: 19
Address: 1A
Address: 1B
Address: 1C
Note 3: After setting each data, be sure to press the PAUSE button.
10) Select page: 0, address: 01, and set data: 00.
Regulated power supply
5.80 ± 0.01Vdc
Power code
(J-6082-223-A)
' and D ' using following equations
1C
D ' = Dref'+8
19
D ' = Dref'+23
1A
D ' = Dref'+44
1B
D ' = Dref'+55
1C
Battery
terminal
Fig. 5-1-19.
Digital voltmeter
BATT UNREG
1
3
BATT GND
CN301
DD-119
board
5-23