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LTC 4600 Series | Instruction Manual | Replacement Parts
4.9
LTC 4637 Series Rack-mount
Card Cage
4.9.1 Installation
1. Install the LTC 4637 Series Rack-mount into a
standard EIA 19in. rack, using user-supplied rack-
mounting hardware. Be careful to not damage
exposed objects on the back of the card cage unit.
2. If a secondary earth ground connection is needed, a
grounded wire with a ground lug can be attached to
the rack using the protruding screw provided on
the right side of the chassis.
3. Connect the supplied AC voltage line cord between
the rear of the power supply and the appropriate
AC voltage source.
4. Fiber optic plug-in modules can be installed into
any of the available 14 slots of the card cage. Most
modules require only a single slot width, but others,
such as the LTC 4644 and LTC 4645 Series,
require two slot widths.
5. If desired, LTC 4600/00 blank panels (ordered
separately) may be installed to cover unused slots.
A single blank panel covers a single slot opening.
6. Refer to the sections of this manual for specific
installation instructions regarding the plug-in
modules.
4.9.2 Indicators
1. LTC 4637 Series front panel LED illuminates when
AC power is applied to the unit.
2. Each fiber optic plug-in module is equipped with a
POWER LED indicator that illuminates when
power is applied to the rack unit.
Figure 11 LTC 4637 Series Typical Installation
Bosch Security Systems | July 08, 2008
4.9.3 LTC 4637 Maintenance / Service
Information
1. The power supply is fused with a 1A slow blow
fuse. To replace the fuse, remove the AC power
line cord from the power supply, and carefully pry
out the fuse module above the AC connector.
2. The 3-pin connector on the rack supplies a 20VAC
center tapped voltage, and is the only electrical
connection from the back plane to a plug-in
module. Each plug-in module contains its own
fuse, so in the unlikely event of a module failure,
the other modules in the rack remain unaffected.
3. The power supply is modular in construction, and
can be replaced in the event of damage or failure.
To remove the power supply from the rack:
a) Disconnect the AC line cord and power supply
cable from the circuit board back plane, located
on the rear of the card cage.
b) Loosen the four (4) screws located at the front of
the power supply using a small flat blade
screwdriver. Slide the power supply out of
the card cage.
c) Reverse the above procedure to install the power
supply into the card cage.
5
UPA-1509-60
UPA-1509-50
LTC 4637/60
power supply
Power
BOSCH
REPLACEMENT PARTS
Power Supply for 120VAC Stand-
alone Modules
Power Supply for 230VAC Stand-
alone Modules
EN | 16
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