Battery End Adjustment (Vc-235 Board) - Sony DCR-TRV820 Service Manual

3. Battery End Adjustment (VC-235 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 recording
Subject Arbitrary
Measurement Point LCD display of the adjustment
remote commander
Measuring Instrument
Adjustment Page D
Adjustment Address 48, 49
Note 1: The lens block and cabinet (R) must be connected.
Switch setting:
1) AUTO FOCUS ................................................................. OFF
2) LCD screen .................................................................. Closed
3) NIGHT SHOT .................................................................. OFF
Connection:
1) Connect the regulated power supply and the digital voltmeter
to the battery terminal as shown in Fig. 5-3-4.
Adjusting method:
1) Adjust the output voltage of the regulated power supply so
that the digital voltmeter display is 6.1 ± 0.1 Vdc.
2) Turn off the power supply.
3) Turn on the HOLD switch of the adjustment remote com-
mander.
4) Turn on the power supply.
5) Load a cassette, and set to the camera recording mode.
6) Select page: 0, address: 01, and set data: 01.
7) Decrease the output voltage of the regulated power supply so
that the digital voltmeter display is 5.30 ± 0.01 Vdc.
8) Select page: 2, address: 5D, read the data, and this data is named
Dref.
9) Select page: D, address: 48, set data: Dref, and press the PAUSE
button of the adjustment remote commander.
10) Convert Dref to decimal notation, and obtain Dref'. (Refer to
Table 5-4-1 "Hexadecimal-decimal conversion table" of "5-4.
Service Mode")
11) Calculate D ' using following equations (decimal calculation),
49
convert it to a hexdecimal number, and obtain D
D '=Dref'+8
49
12) Select page: D, address: 49, set data D
PAUSE button of adjustment remote commander.
13) Select page: 0, address: 01, and set data: 00.
.
49
, and then press the
49
5-43
Regulated power supply
+
5.3 ± 0.01 Vdc
+
Digital voltmeter
Fig. 5-3-4
+