19
z
Take out test-object #1 intended for testing the USB-device for MOV (see paragraph 1 .1 .5)
from the Spare Parts and Repair Kit (SPRK) and make its magnetic copy in conformity
with paragraph 2 .2 .2 .3 .
z
Perform magnetic copy stitching in the PC in conformity with paragraph 2 .2 .1 .3 .
z
Compare the results of obtained magnetic copy stitching with the template shown in
Figure 4 . In case of positive results, operation of the unit is considered normal . Criteria
of comparing the obtained magnetic copy stitching results with the templates are as
follows:
{
match the quality of displaying the original metal surface (surface texture
shall be visible),
{
compare the quality of displaying signs of the original number digits alterations
(traces of mechanical processing on the 2
nd
, 4
th
and 6th digit positions, as well
as traces of spot welding and contours of pressing-in fragments on the 4
th
digit
position shall be visible),
{
match the quality of displaying residual digits of the original number that were
altered (fragments of the original number digits shall be visible on the 2
nd
and
6
th
digit position) .
z
In case of malfunction at any stage of operation control, see paragraphs 3 and 4 .
Magneto-optical visualization of the test object surface through the layer with thickness of 0 .1 mm .
Spatial resolution is around 80 μm
Figure 4
Operational check-up
To switch the device off do the following:
z
Close special Videoscope/NUCA(EYER) software . A yellow LED (Figure 3, pos . 4) goes
off and the device enters sleep mode . Exit the operational system and switch off the PC .
z
Disconnect the external PC power supply source from the mains (if it was connected) .
z
Unplug the device . Place the power cable and the AC adapter into the corresponding
body-case compartment .
2.2.1.3 Intended Use
The USB-device for MOV performs the following operations:
z
magnetic copy stitching,
z
extracting a used magnetic copy,
z
processing and analyzing magnetic copy stitching,
z
documenting examination results .
z
Ensure that no magnetic tape is present in OMB tape drive tract - thus, neither red LED
“MT in the buffer” (Figure 3, pos . 4), nor the green LED “MT in the tract” (Figure 3,
pos . 4) comes on . Otherwise, first remove the previous magnetic copy .
Switching the device off
Magnetic copy stitching
Summary of Contents for 7505M
Page 2: ......
