IL498 Tek-VIEW
®
• Page 5
Copyright © TekTone Sound & Signal Mfg., Inc. All Rights Reserved.
Video Monitor (VM104):
A. Connect all necessary wires as shown in the connecting
diagram (Figure 5). Refer to Figure 6 for dual entrance
wiring. IH357 and IH358 housings include four knock-
out holes for cable inlet.
B. Mount the VM104 to the IH357 and IH358 ring housing
using the adapter plate.
Transformer (SS250):
A. Connect transformer 16 volt terminals to PK314A, termi-
nals T1 and T2. Connect transformer primary to 117
VAC observing all applicable electrical codes.
SYSTEM CHECK-OUT
Check entire system according to the operating instructions,
turning each monitor on individually so that if a problem
exists it may be easily identified. If the system does not
operate as indicated, refer to
Troubleshooting
section.
OPERATING INSTRUCTIONS
Entrance Panel (VM320B, VM600B):
1. Momentarily press button corresponding to desired suite.
2. Reply in a normal voice when spoken to. Reply is hands-
free.
3. When door release buzzes, enter through door.
Suite Station (VM104):
1. When call tone is heard, pick up intercom handset.
2. Adjust picture brightness and contrast as necessary using
the slide control switches located just below the lower
right corner of the video screen.
3. Identify caller on the video screen and converse with
them.
4. The door may be opened by pressing the door release
button marked
DOOR
.
A monitor will stay on for approximately 1 minute when
called. Picture is delayed by approximately 3 to 5 seconds.
When the door release is activated, or when a second caller
rings another suite, the monitor will shut off.
Calls may also be initiated from the VM104 by pressing the
video monitor button marked
MONITOR
. This activates the
camera and may be used to re-initiate a call that has been
canceled, or to monitor the entrance panel. The monitor will
stay on for approximately 1 minute. Only 1 monitor at a
time should be on using video monitor button.
If standby control is switched
ON
, the red LED will light and
the monitor will remain on standby, ready to operate when
another call is placed from the entrance panel. NOTE:
Performance may vary with large or small installations. If
no video contact with the entrance is desired, or if a tenant is
leaving the suite, the standby switch may be turned
OFF
.
Audio communication will still operate normally.
SYSTEM MAINTENANCE
Entrance Panel (VM320B):
Directory panels are accessible by removing the self-tapping
metal screw(s) located in the top L-channel just above each
panel. After removing screws, lift L-channel away from
frame. Panel can then be removed. Apply directory listings
as desired, and replace panels by reversing the above
procedure.
Control Unit (PK314A):
Each PK314A has a 5 amp, 3AG fuse for overload protection.
Replace this fuse only with the same type and rating. If this
fuse continually opens, check for incorrect wiring or
equipment failure.
TROUBLESHOOTING
System:
Check for 15–18 VDC on PK314A terminals P and N. This
voltage should also appear between the + and - terminals of
all video monitors. NOTE: The PK314A 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 monitors turn
on (screen lights up) but no picture is displayed, check the
camera by connecting a monitor directly. If the camera does
not turn on, check for 12 VDC on camera terminals CP and
CN, then check for 10 VDC on PK314A terminal CT
(terminal N is negative). Terminal CT voltage comes from
the video distribution system (PK320).
Problems with the video distribution system are usually due
to incorrect wiring. Check that CT terminal on each video
monitor connects directly to the distribution amplifier
(PK320) that is feeding the video signal to it. This is
necessary because the PK320 is turned on by the connection
from the CT terminal on the active monitor to PK320
terminal A. Terminal B on the PK320 connects to PK314A
terminal CT to turn on the camera.
Intercom:
Incorrect wiring is the cause of most intercom problems.
Check the PK314A by disconnecting the common wires,
connecting a monitor directly, 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 (Figure 5) is essential for operation.
Video Monitors:
Video monitors are best checked by substitution. If the red
standby LED is not illuminated when the unit is turned on,
verify that +17 VDC is present. If present, replace the
monitor; if not, troubleshoot wiring for +17 VDC.
