Iris Diagnostics, a Division of Iris International, Inc.
iQ
®
200 Sprint™ (2G) Automated Urine Microscopy Analyzer Service Manual 300-4949 Rev A 01/2005 3-18
3. Components
Power Supply # 230-3000
This assembly includes the international-voltage-range AC-line-to-DC
converters to generate +24V and +5V regulated DC for the entire
Microscopy Module, and the strobe power supply. The regulated
voltages out of the Power system assembly are brought to the Power SIC
through a 10-wire cable and a locking Molex connector.
Cooling Fans # 700-3892 & 700-3412
While the Microscopy Module is designed
to operate with only natural convection, at
higher ambient temperatures, it may be
necessary to use some forced-air cooling.
Two fans are present: one in the card
cage area, and one in the main instrument
area. These fans are turned on by +24V
power switched on when the temperature
sensed by a local thermistor goes above
34
o
C ± 1
o
C and switched off when the
temperature goes below 29
o
C ± 1
o
C.
These fans plug into individual 2-pin connectors on the Backplane.
Fuses and Visible LEDs
The fuses are quick-acting, miniature and pluggable. The fuse socket is
soldered to the PCB and has a threaded plastic cap that mechanically
retains the fuse. Three different
fuse ratings are used:
• 0.50 A Iris 056-3000
• 1.0 A Iris 056-3004
• 2.5 A Iris 056-3001
The Backplane has 22 fuses and
22 visible red LEDs. Each LED is
associated with a power protection
fuse, and the LED lights only when
DC power is on (via the Power
SIC) and the fuse is blown.
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