Lee Dan enterview Installation Instructions Manual - page 10
With continuous product improvement, sizes and other specifications are subject to change without notice.
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© 1997-2002 LEE DAN
®
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FIGURE 9
- VM-104 REAR VIEW
OVERALL DIMENSIONS: H: 8.25"; W: 7.38"; D: 2.25"
TROUBLE SHOOTING
SYSTEM:
Check for 15-18 VDC on PK-314A terminals P and N. This voltage should also appear between the + and - terminals of all video monitors. NOTE: The
PK-314A has an electronic current limiter that will shut the unit off in the presence of a short circuit on the output terminals. When the short is removed, the
output should appear again. The current limiter will also act in case of an overload (too many monitors), which will cause the output to switch on and off rapidly.
This may be noticed only if all monitors are turned on.
If power supply function is satisfactory and if monitors turn on (screen lights up) but no picture is seen, the camera may be checked by connecting a monitor
directly. If the camera does not turn on check for 15 VDC on camera terminals CP and CN, then check for 10 VDC on PK-314A terminal CT (terminal N
is negative). Terminal CT voltage comes from the video distribution system (PK-320).
Problems with the video distribution system are usually due to wrong wiring. Make sure th CT terminal on each video monitor connects directly to the
distribution amplifier (PK-320) that is feeding the video signal to it. This is necessary because the PK-320 is turned on by the connection from the CT terminal
on the active monitor to PK-320 terminal 4. Terminal 3 on the PK-320 connects to PK-314A terminal CT to turn on the camera.
INTERCOM:
Wrong wiring is the cause of most intercom problems. The PK-314A may be checked by disconnecting the common wires and connecting a monitor directly
to and then checking communication. The telephone operation is independent of the video section and should operate even if the video does not. The use
of twisted pair wiring as shown on the connecting diagram FIG. 5 is essential for operation.
VIDEO MONITORS:
Video monitors are best checked by substitution.
If red standby light is not illuminated when unit is turned on check if +17 VDC is present. If present replace
monitor, if not, trouble shoot wiring for +17 VDC.
LEE DAN
®
VM-104