Valcom V-763 Manuel utilisateur
TECHNICAL ASSISTANCE
When trouble is reported, verify there are no broken connections to the unit
and consult the Troubleshooting Chart. Assistance in troubleshooting is
available from the factory. When calling, you should have a Volt-Ohm meter
and a lineman’s test set available and be calling from the job site. Call (540)
563-2000 and ask for Technical Support, or visit our website at
http://www.valcom.com.
Valcom equipment is not field repairable. Valcom, Inc. maintains service
facilities in Roanoke, VA. Should repairs be necessary, attach a tag to the
unit clearly stating your company name, address, phone number, contact
person and the nature of the problem. Send the unit to:
Valcom, Inc.
Repair and Return Dept.
5614 Hollins Road
Roanoke, VA 24019-5056
VALCOM LIMITED WARRANTY
Valcom, Inc. warrants its products to be free from defects in materials and workmanship
under conditions of normal use and service for a period of one year from the date of
shipment. The obligation under this warranty shall be limited to the replacement, repair or
refund of any such defective device within the warranty period, provided that:
1. inspection by Valcom, Inc. indicates the validity of the claim;
2. the defect is not the result of damage, misuse or negligence after the original
shipment;
3. the product has not been altered in any way or repaired by others and that factory
sealed units are unopened (A service charge plus parts and labor will be applied
to units defaced or physically damaged);
4. freight charges for the return of products to Valcom are prepaid;
5. all units ‘out of warranty’ are subject to a service charge. The service charge will
cover minor repairs (Major repairs will be subject to additional charges for parts
and labor).
This warranty is in lieu of and excludes all other warranties, expressed or implied,
and in no event shall Valcom, Inc. be liable for any anticipated profits, consequential
damages, loss of time or other losses incurred by the buyer in connection with the
purchase, operation, or use of the product.
This warranty specifically excludes damage incurred in shipment. In the event a product is
received in damaged condition, the carrier should be notified immediately. Claims for such
damage should be filed with the carrier involved in accordance with the F.O.B. point.
Headquarters:
Valcom, Inc.
5614 Hollins Road Roanoke, VA. 24019-5056
Phone: (540) 563-2000 Fax: (540) 362-9800
INSTALLATION INSTRUCTIONS FOR
AMPLIFIED DESK SPEAKER
MODEL NO. V-763
Issue 8 947163
Valcom Page
Control
Page
Out One-Way
Amplified
Speaker
Tip/A
Ring/B
-24VDC
Gnd
Valcom -24VDC
Power Supply
Ground
-24VDC
Tip
Ring
- Black
- Yellow
- Green
- Red
Typical Connections
YELLOW
GREEN
RED
BLACK
VALCOM ONE-WAY AMPLIFIED DESK SPEAKER
Valcom Desk Speaker, V-763, is self-amplified and may be used to provide
paging from any one-way or talkback page control. The volume may be
adjusted with the knob on the front of the housing. The V-763 requires -
24VDC, 50mA (1 Valcom power unit).
Model V-763-BK Black
Model V-763-W White
Model V-763-GY Gray
NOMINAL SPECIFICATIONS
Input Impedance: 600 Ohm nominal
Input level: -10dBm nominal
Current at -24VDC: 45mA
Dimensions: 3.90" H x 5.10" W x 3.20" D
(9.91cm H x 12.95cm W x 8.13cm
D)
Weight: .6 lbs. (.27 kg)
WIRING
Make connections as shown below using standard, twisted telephone cable.
Limit the number of speakers to five (5) per 500 foot run.
NOTE: Do not connect this speaker directly to 25/70/100V amplifier
as damage to both the amplifier and speaker may occur. A V-1095
may be used to allow the use of Valcom self-amplified speakers on
70V speaker lines.
MOUNTING
The V-763 can be used on a desk or wall mounted. The front cover may be
rotated to match positioning. Four rubber feet are included with the V-763 to
prevent movement on a desk surface.
Key hole patterns are located on the inside rear surface of the enclosure for
wall mounting. When wall mounting, remove the front cover, mount and
replace the front cover. Use a 11/32" drill bit to drill the center hole and a
3/16" bit to drill either of the outer holes.
Connector Pin-Out
TROUBLESHOOTING CHART
Problems
Probable Causes and Corrections
No Audio from
Speaker 1. Check that volume control is turned up
(Clockwise).
2. Using a lineman’s test set, check for the proper
audio level on the Tip/A & Ring/B leads, and if
necessary at the source.
Low Volume
from the
Speaker
1. Check that volume control is turned up.
2. Check voltage at the speaker when in use (-18 to -
24 VDC required).
3. Using a lineman’s test set, check for proper audio
level on the Tip/A & Ring/B leads. It is possible
some low level audio will be heard with only one
side of Tip/A and Ring/B connected.
Loud Squeal
(feedback) 1. Lower volume of speaker.
2. Move speaker to location further from phone.
3. Install confidencer on phone in severe problem
area.
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