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VL-H870U
VL-H875U
VL-H890U
6-3-2-3. Battery shut-off voltage adjusting method
1) Supply power to the main unit, using the variable-voltage DC power supply (range of 2.5V to 5V).
2) Set the CAM/OFF/VCR SW to CAM to switch to the camera mode.
3) Load a recordable tape and set the main unit to CAM REC. PAUSE.
4) Set the main unit to TEST mode No. 3, and start recording.
5) Measure voltage between TL901(+) and TL903(GND), and adjust the supply voltage to 3V.
6) The adjustment is complete if "BATTERY" is displayed on the monitor screen for a second when the PLAY key of operation unit
is pressed.
7) The adjustment is regarded as proper if the auto shut-off is actuated after the warning is displayed when the TEST mode is
cancelled.
* In case of automatic adjustment of shut-off voltage, adjustment is impossible if voltage is above 3V ± 0.2V.
If the adjustment is made at 2.9V or below, the low-voltage operation may become unstable.
•Type of test modes
<Procedues>
To adjust the camera section of this machine, the remote control for servicing (RRMCG0033TASA) is used.
Press the "CONTINUE" key → "TEST SEL", this will show [T-01] on the LCD OSD, (01:flashing), and select the below TEST No. with
"FF" or :REW" key and set with "PLAY" key.
Same procedures of adjustment from now on.
Use the SW2 thru SW9 switches on the adjustment tool to select the following test modes.
TEST No.
1
Sensors off
2
Mechanism adjustment
mode
3
Automatic battery sensor
adjustment
4
Error display
Battery adjustment error
display
5
PASS mode
6
Camera adjustment mode
7
VCR adjustment mode
8
Automatic switching point
adjustment (STOP ADJ)
1 When the battery adjustment mode is selected from the camera adjustment mode with a cassette with the erase protection tab,
the VCR is automatically put in the REC mode.
Title
All sensors but the cassette controller switch, dew sensor and
battery sensor stay off.
1 Automatic SP/LP detection prohibited
2 Different-mode detection prohibited
3 ATF sampling limited to center
Battery sensor's input voltage put in memory.
Past errors appear on the counter display of the viewfinder.
Battery sensor's adjustment errors are displayed at the right of the
"past errors" area.
Track shift mode (1/4 shift)
Camera adjustment mode
VCR adjustment mode
Play standard tape and call this mode. Switching point is
automatically adjusted.
Contents
6-4
VL-H870U
VL-H875U
VL-H890U
Sensor on/off
All sensors on
All sensors on
All but sensors
on
All sensors on
[VCR
interrupted]
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