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Chapter 4
Troubleshooting
Troubleshooting
Preventative Maintenance
PROBLEM POSSIBLE CAUSE
SOLUTION
1) System does 1) not plugged in 1) plug in power
not turn on cords
2) switch not 2) turn switch
turned on on at rear of
3) safety latch subsystem
not secure 3) tighten
safety latch on
4) bad power top of power
supply supply case
5) power supply 4) replace power
not allowed to supply
discharge for one 5) turn AC
minute switch off that
provides power to
power supply and
wait one minute
before turning AC
power on again
2) Power supply 4-wire cable from Check cable to be
on but dual power supply to sure it is seated
fan, group mux is defective and locked in
LEDs, and video place
not on
3) Power supply 10-pin relay Check cable for
on, fans on, control cable is proper seating
group LEDs on, defective and polarity
but no slot.
LEDs and no
video on
PROBLEM POSSIBLE CAUSE
SOLUTION
4) Some group 1) group switch 1) turn on group
LEDs not on not on switch
2) shorter board 2) check to be
not installed or sure shorter
seated properly board is fully
3) group fuse(s) seated
bad 3) replace
fuse(s)
5) Front panel Active group Set switches for
display not switch settings the configuration
counting not configured (see Appendix C)
properly
6) No video 1) DB-25 video 1) check cables
cable(s) not for connection
seated and proper
polarity
2) MultiServ/FT 2) check for
internal interface proper connection
module cables
7) Battery test 1) Subsystem not 1) turn on
light does not turned on subsystem
work 2) bad batteries 2) replace
batteries
8) Keylock Option switches Set option
switch not not set switches
working (Refer to
correctly Appendix C)
9) Muxed floppy 1) mux floppy fuse 1) replace fuse
does not work bad
2) BIOS not set 2) run BIOS setup
3) cables 3) check power
and data cables
for connection
and proper
polarization
PROBLEM POSSIBLE CAUSE
SOLUTION
10) IDE HDD 1) cables not on 1) check power
does not work properly and data cables
for connection
and proper
2) BIOS not set polarity
2) run BIOS setup
3) IDE controller and configure HDD
switched off on BC 3) turn on switch
processor (see the
BC
Series
Installation
Guide for
instructions)
11) Power Power supply has a Wait one minute
supply will not one minute recycle before turning
work after time power on to the
turning power power supply
off and back on
12) Mouse Mouse was moved Restart
cursor stuck while multiplexor application mouse
along top or channel was driver and
side of screen, changed refrain from
or not moving moving mouse when
switching
channels
13) Video not Only one subsystem Ensure no more
working at a time can be than one
properly in a powered down in a subsystem is
multiple daisy-chained powered down at a
Subsystem situation time
configuration
14) Muxed Floppy disk was Reset processor
floppy not being accessed and do not change
found after when this channel multiplexor
changing was last switched channels while
multiplexor floppy activity
channel lamp is on
Periodically, do the following:
1. Ensure all four subsystem fans are operating.
2. Test both battery packs using the battery test pushbuttons located directly underneath the system fans.
3. Ensure neither MultiServ/FT power supply has a fault condition.
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by Cubix Corp., Carson City, NV, USA.