Disassembly/Assembly; Disassembly - Honeywell LC13-510 Manual

4.1 DISASSEMBLY

To protect equipment from voltage transients and ensure reliable operation, always turn
power off before removing or replacing boards in a node. While working on one node in a
Dual Node Module, you may leave the power on for the other node, leaving it operational. It is
NOT necessary to turn off power to replace a KLCNA or KLCNB (see subsection 3.3.8).
Disassemble the module only to the extent necessary to service or replace defective parts.
The following procedures may require the use of a blade-tip screwdriver, nut drivers, a
personnel grounding strap, and antistatic fixtures and equipment. Item numbers enclosed
in parentheses in the procedures below refer to circled numbers in the exploded module
diagram, Figure 4-1, and are keyed to the item numbers in Spare Parts, Section 5.
1. Remove the front panel (1) by turning the two quarter-turn fasteners on the right side
of the panel. Gently pull the right edge of the front panel away from the chassis
approximately one inch and then slide the panel to the right, approximately one-half
inch, until the panel is free. Do not attempt to swing the panel open like a door, or
damage will result.
All assemblies used in this module are likely to contain electrostatically sensitive devices. Use
a personnel grounding strap and grounded work surfaces and equipment. Store and
transport parts only in electrostatically safe containers.
2. Remove the boards (2) by pulling out on the retainers and sliding the boards out of
the chassis.
3. Remove the fan assembly (3) by loosening the two quarter-turn bail-headed fasteners
and sliding the assembly out of the module.
4. Remove the power supply (4) by pulling the retainers, and sliding the supply out of
the chassis.
5. Remove the I/O boards (5) from the rear chassis.
Dual Node Module Service

DISASSEMBLY/ASSEMBLY

W A R N I N G
CAUTION
4-1
4
Section 4
9/95