Introduction; Major Features; Periodical Maintenance - JVC SR-L910UA - 24 Hour Time Lapse Vcr Instructions Manual

1 INTRODUCTION

1-1 Major Features

5 24-hour long-time recording with a 120-minute tape
Recording times are selectable from 2 hours (SP mode), 6-
hours (EP mode) and 12/24 hours (Timelapse mode). Monitor
image recording for up to 24 hours is possible with a 120-
minute tape.
5 Audio monitoring
Audio signals can be recorded in the 12-hour/24-hour
Timelapse mode, as well as in the conventional 2-hour/6-hour
mode. This strengthens surveillance capabilities by providing
both audio and video information.
5 Alarm recording function
When an alarm signal is input in the Timelapse Record mode,
the 2/6-hour mode is automatically engaged. Alarm recording
time can be selected from 5, 15, 30, 60, 120, or 180 sec., to
tape end or set manually.
An index code is automatically recorded when alarm recording
starts. Used as an alarm cue signal, this allows quick access to
alarm recording points with the Index Search function.
5 Sensor recording
Whenever an alarm signal is input in the Stop mode, the
Record mode is automatically engaged.
5 Time/date generator
Superimposes the year, month, date, minute and second on
the image during recording. Also allows you to use the menu
screen to display the number of alarms, alarm time, and the
number of the power failures.
5 Timer recording function
Two types of timer recording are available: based on the date
(up to 8 programs) or based on the day of the week.

1-2 Periodical Maintenance

This VCR incorporates precision mechanical parts which will collect dirt over time and ultimately deteriorate and wear out.
Over long periods of use, dirt and dust accumulates on the heads, drums and tape transport mechanisms. Dust which
penetrates the VCR (especially during outdoor use) also promotes the wear and deterioration of mechanical parts by causing
poor contact between tape and heads. This also prevents the VCR from maintaining video and audio quality at high levels. To
prevent wear and deterioration, clean the heads regularly using a head cleaning tape. However, because a head cleaning
tape alone cannot clean the entire tape transport mechanism, this should also be inspected periodically to prevent any
problems that could result from a sudden failure.
As replacement and adjustment of parts require advanced skills and specialized equipment, please contact the person in
charge of professional video equipment at your nearest JVC-authorized service agent for servicing.
Monitoring Usage Time
The total operation time reached by an ordinary home VCR
in 5 or 6 years may be reached by a professional VCR in
as few as 5 or 6 months. Therefore, it is important that the
total hours of operation be carefully monitored. An hour
meter in the on-screen display (see page 18) shows the
accumulated time. In the chart below, the hours
accumulated in each month are shown in relation to the
number of hours used per day. Times shown inside
shaded area indicate that maintenance should be
performed.
Usage
time per
1 month 2 months 3 months 6 months 12 months
day
2 hours 60 120
8 hours 240 480
12 hours 360 720
24 hours 720 1440
6
180 360 720
720 1440 2880
1080 2160 4320
2160 4320 8640
5 Recording Check function
Pressing the [REC CHECK] button during recording allows you
to check the status of the recording in progress. When
activated via the corresponding function menu switch, the built-
in head cleaner automatically cleans the heads whenever
inferior picture quality is detected during Recording Check.
After cleaning, the Recording Check operation is executed
again automatically (Auto Recording Check function).
5 Operation lock system
To prevent accidental or deliberate interference with VCR
operation, a secret operation lock system is provided.
5 Warning function
Error indications are shown on the front panel display.
5 Power-off video throughput function
Even when the power is off, the camera's EE input can be
output from the VCR.
5 Camera switching signal output terminal
5 Automatic re-start of recording after a power failure
5 Digital hour meter display
5 Repeat recording/series recording function
5 Recording control with external activation signal
5 Alarm recording, tape end and warning electronic buzzer
5 Summer time compensation function
5 Wired remote control (optional)
5 RS-232C control (with optional SA-K97U RS-232C interface
board installed)
The SR-L910UA can be controlled via a personal computer.
Operation status can be monitored on the computer.
Periodic Maintenance
Check or replace the following mechanical parts according
to the running time.
Running time
Drum ass'y (including heads)
Pinch rollers
Drive parts
• Maintenance requirements may vary depending on the
operating environment and usage. The information
above should be used as a reference guide.
1000H 2000H 3000H 4000H
^
^
^ ^ ^
^ : Cleaning
: Check or replace as required.
: Replace