
TM 11-6625-1514-15
SECTION I
GENERAL DESCRIPTION
1 - A . 1 . S c o p e
This manual includes installation and operation in-
structions and covers operator’s, organizational,
direct support (DS), general support (GS), and depot
maintenance. It describes Hewlett-Packard (Federal
Supply Code 28480) Vacuum Tube Voltmeter Models
400D and H02-400D, serial numbers 310-45571 and
higher; and Models 400H and 400L, serial numbers
313-22177 and higher. A basic issue items list for this
equipment is not included in this manual.
1-A.2. Index of Technical
Publications
Refer to the latest issue of DA Pam 310-4 to deter-
mine whether there are new editions, changes or ad-
ditional publications pertaining to the equipment.
1-A.3. Maintenance Forms, Records,
and Reports
a. Reports of Maintenance and Unsatisfactory
Equipment. Department of the Army forms and pro-
cedures used for equipment maintenance will be
those prescribed by TM 38-750, The Army
Maintenance Management System (Army). Air Force
personnel will use AFR 66-1 for maintenance repor-
ting and TO-00-35D54 for unsatisfactory equipment
reporting.
b. Report of Packaging and Handling Deficien-
cies. Fill out and forward SF 364 (Report of
Discrepancy (ROD)) as prescribed in AR 735-11-2/
DLAR 4140.55/NAVMATINST 4355.73/AFR 400-
54/MCO 4430.3E.
c. Discrepancy in Shipment Report (DISREP)
(SF 361). Fill out and forward Discrepancy in Ship-
ment Report (DISREP) (SF 361) as prescribed in AR
55-38/NAVSUPINST 4610.33B/AFR 75-18/MCO
P4610.19C/DLAR 4500.15.
1-A.4. Reporting Errors and Recom-
mending Improvements
You can help improve this manual. If you find any
mistakes or if you know of a way to improve the pro-
cedures, please let us know. Mail your letter or DA
Form 2028 (Recommended Changes to Publications
and Blank Forms) direct to Commander, US Army
Communications-Electronics Command and Fort
Monmouth, ATTN: DRSEL-ME-MQ, Fort Mon-
mouth, NJ 07703. A reply will be furnished direct to
you.
1-A.5. Report Equipment Improve-
ment Recommendations (EIR)
If your vacuum tube voltmeter needs improvement,
let us know. Send us an EIR. You, the user, are the
only one who can tell us what you don’t like about
your equipment. Let us know why you don’t like the
design. Tell us why a procedure is hard to perform.
Put it on an SF 368 (Quality Deficiency Report).
Mail it to Commander, US Army Communications-
Electronics Command and Fort Monmouth, ATTN:
DRSEL-ME-MQ, Fort Monmouth, NJ 07703. We’ll
send you a reply.
1-A.6. Administrative Storage
Administrative storage of equipment issued to and
used by Army activities will have preventive
maintenance performed before storing. When
removing
the equipment
from administrative
storage, the PMCS should be performed to assure
operational readiness.
1-A.7. Destruction of Army Elec-
tronics Materiel
Destruction of Army electronics materiel to prevent
enemy use shall be in accordance with TM 750-
244-2.
Change 1
1-0.1
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