Thermo Scientific SAM12, Manual

Page: 164 / 176

Maintenance and Trouble Shooting Issue: 1.0
11-16 SAM12 User Manual Thermo Fisher Scientific
Removal and Replacement (page 11-6) channels show a
background count significantly greater than that
expected, the SAM12 is experiencing an elevated
background. Proceed as follows:
•
Check the area immediately around the SAM12 for
sources of any possible contamination.
•
Measure the ambient background level with a
suitable survey monitor. If the background is high,
it must be reduced or the SAM12 moved for normal
monitoring operation to resume.
IF THIS CONDITION PERSISTS and the background and
measurement limits seem to be reasonable, ‘frisk’ inside the
monitor cubicle for a possible build-up of contamination.
A power-on Self Test lights each lamp & LED in turn. If any
lamp or LED fails to light in sequence (except the charging
LED), proceed as follows - using “Diagnostics/Vault” to re-test
lamps as required:
1. Check the connections to the lamp assemblies and to the
Controller board.
2. Any device failure will need a replacement board.
3. If there are two lamp assemblies and neither are
functioning then a fault on the Controller board is
indicated and it should be replaced as described
Controller Board type 5670A - Removal and
Replacement (page 11-6)
.
A power-on self Test produces a “beep” tone as each lamp is
tested and a single chime “ding-dong” upon satisfactory
completion. If no sound is heard, proceed as follows:
1. Enter a valid password and select System|Setup, and
increase the volume (as described in
Setup (page
Error!
Bookmark not defined.
) ). The speaker should produce
a series of “beeps” which gradually get louder or quieter
when the volume control is dragged.
2. If no sound is heard, check the speaker connection to
the Controller board.
3. Since the speaker is unlikely to have failed, a fault on
the Controller board is indicated and it should be
replaced as described in
Controller Board type 5670A -
Removal and Replacement (page 11-6) .
A power-on self Test switches on the back-light and produces
series of “Self Test Messages” as each lamp is tested. If the
Fails Lamp or LED Tests
Fails Loudspeaker Test
Fails the LCD Display Test