Touch Panel Adjustment (Vc-245 Board); Battery End Check (Vc-245 Board) - Sony DCR-PC4E Service Manual

3. Touch Panel Adjustment (VC-245 board)

Adjust the calibration of the touch panel.
Mode VTR stop
Signal Arbitrary
Adjustment Page D
Adjustment Address E0 to E3
Note 1: Protect the Touch panel (LCD screen) with a transparent sheet.
Note 2: Turn off the HOLD switch of the adjustment remote commander.
Adjusting method:
1) While pressing the DISPLAY button, set the POWER switch
from OFF to VCR (or PLAYER).
2) Using a ball-point pen etc., push the center of "×" indicated in
the part A.
3) Using a ball-point pen etc., push the center of "×" indicated in
the part B.
4) Using a ball-point pen etc., push the center of "×" indicated in
the part C.
A
Fig. 5-3-4.
C
B

4. Battery End Check (VC-245 board)

Check the battery end voltage.
Mode
Subject
Note: It is normal though the following symptoms appear during the battery
end check.
1) The message of "FOR InfoLITHIUM BATTERY ONLY" on
the LCD or viewfinder screen.
2) The tally lamp is flashing.
Connection:
1) Connect the regulated power supply and the digital voltmeter
to the battery terminal as shown in Fig. 5-3-5.
Checking method:
1) Adjust the output voltage of the regulated power supply so that
the digital voltmeter display is 3.5 ± 0.1Vdc.
2) Turn off the power supply.
3) Turn on the HOLD switch of the adjustment remote
commander.
4) Turn on the power supply.
5) Load a cassette, and set to the camera recording mode.
6) Decrease the output voltage of the regulated power supply so
that the digital voltmeter display is 3.3 ± 0.1Vdc.
7) Record the camera signal for a minute.
8) Playback the recorded section and check that the playback
picture and sound are normal.
Regulated power supply
+
3.3 ± 0.01 Vdc
+
Digital volt meter
5-42
Camera recording and VTR playback
Arbitrary
+
Fig. 5-3-5.