NPZ 1PN91-2, Service Manual

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– put the accumulators NLTs-0.9- 4, the batteries of standard size R6 (AA) 3,
the elements ТHL -36 2 from the single STA kit separately into pockets made of
polyethylene film (T sleeve of the st class, GOST 0354-82), solder the pockets up;
– wrap the napkins 0 separately with the parchment П-45 (GOST 760-86);
– put maintenance documentation into pocket made of polyethylene film
(T sleeve of the st class, GOST0354-82), solder the pocket up.
5.4.5 Put the article, single STA kit, maintenance documentation into the
case (Figure A.0).
REPAIR IN SERVICE
6 REPAIR ARTICLE IN SERVICE
6.1 General instructions
6.. For detection of failures in the article operation check the following:
– if the sighting device is fastened well on the tripod;
– if there is no dust, dirt, grease, hoar-frost or water on the objective and
ocular;
– if the battery is not discharged;
– if power supply of the article is on.
Special attention must be paid to the cleanness of the power supply
contacts.
6..2 While working with the article, the safety measures must be taken
according to the chapter 2.
6.2 Troubleshooting
6.2. Possible consequences of failures and damage, instructions on their
elimination are described in the table 8.
Table 8
Problem Possible reasons
Instruction on identifying
and elimination of the
assembly (detail) failure
and damage consequence
Image of the location
is seen vague and
blurred
Dew or dirt on the
external surfaces of the
ocular or objective
2 The sighting device is
defocused
Clean the ocular and
objective of the sighting
device with a napkin 0
(Figure A.9) from the single
STA kit
2 Focus the sighting device
by turning the handwheel 2
(Figure A.3)
No illumination of the
image intensifier
II
T
tube A2 (Figure A.)
Battery has run down Replace the battery for
the good one from the
single STA kit according to
the point 6.2.4 of the given
Service Manual