TM 11-5895-856-34-1/EE640-CA-MMI-010/E154 CPU/TO31W2-2T-122-1
CHAPTER 3
DIRECT SUPPORT MAINTENANCE INSTRUCTIONS
Section 1. GENERAL
3-1. Introduction
b. Replace an unserviceable subassembly,
Maintenance of the CSCPG and MSCPG is performed
module, assembly or unit with a like subassembly,
at Organizational, Direct Support, General Support and
module, assembly or unit.
Depot levels. This chapter provides instructions for
c. Verify serviceability and isolate an equipment
direct support maintenance only.
Direct support
malfunction by measuring the mechanical or electrical
maintenance is performed by those maintenance
characteristics with established standards.
The
activities designated to support the using organization
standards authorized for direct support maintenance
and emphasizes corrective maintenance at the
include built-in test equipment (BITE), fault detection
equipment site. Direct support maintenance personnel
software, fault isolation software, and technical manuals,
perform corrective maintenance on items which are
including wire, connector, and logic lists.
identified as faulty by organizational maintenance
d. Perform the repairs required to correct a specific
personnel, but are beyond their capability to correct
failure or unserviceable condition and restore an item to
using the maintenance resources authorized at the
a serviceable condition. This function includes, but is
organizational maintenance level.
Direct support
not limited to, soldering, wire wrap, piece part
maintenance personnel also provide technical
replacement, and cable or harness replacement.
assistance to the using organization in all areas which
require skills and training that are beyond the
3-2. Voltage measurements
capabilities of the organizational maintenance
personnel. Direct support maintenance is limited to the
Voltage, resistance, and continuity measurements are
activities described below.
made by direct support maintenance personnel for
a. Visually inspect components for evidence of
troubleshooting faults which cannot be resolved or
potential failure conditions such as lack of cleanliness,
repaired by organizational level personnel. Normally
improper seating of connectors, loose hardware or other
such faults are traceable to wiring or chassis-mounted
items, discoloration due to excessive heat, frayed
components. Generally, signal voltages are at standard
cables or wiring, or bent pins. Correction of observed
11L logic levels and measurements are made using an
conditions is to be accomplished as necessary at the
oscilloscope. Power supply voltages are measured with
time of observance by the maintenance level authorized
multimeter ANIUSM-223.
to perform the task.
Section II. TOOLS AND EQUIPMENT
3-3. Tools and Test Equipment
3-4. Repair Parts
Tools and teat equipment required to perform the
Repair parts and accessories authorized for use by
maintenance procedures given in this chapter are listed
direct support personnel are listed in Repair Parts and
in table 3-1. Any tools or test equipment authorized for
Special Tools List (RPSTL) TM 11 -5895-856-34P.
use at the organizational level are also authorized for
use by direct support personnel.
3-1
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