Figure 9−5 Micro Diagnostic Tree - Condition 1 - Main Power Switch On - Unit Does Not Operate - Carrier VECTOR 6500 Operation & Service Manual

Check the F1 fuse.
YES
Is the fuse blown?
Replace the fuse.
Did you find and
correct the
condition?
YES NO
Check ground
connectors at the
battery, starter,
YES
engine block and
inside the control box.
Did you find and
correct the condition?
NO
Check voltage
between QC1 & QC2.
Voltage should read
11 volts or higher.
Is voltage within range
NO
Check Wiring for high
resistance or an open.
YES
Did you find and
correct the condition?
NO
Check voltage
between 5MPA1 &
QC2. Voltage
should read 11
volts or higher. Is
voltage
within range?
NO
Check Wiring for high
resistance or an open.
Did you find and
correct the condition?
System OK,
re-install two way communica-
tions if disconnected earlier.
Figure 9−5 Micro Diagnostic Tree - Condition 1 - Main Power Switch On - Unit Does Not Operate
62-11389
START HERE
Is unit equipped
with two way com-
munications?
Is Micro Status
NO
LED blinking?
Return to
the top of
this chart
NO
Inspect and repair poor
connections at the micro
and display. Did you find
and correct the condition?
NO
Ensure the operator is waiting
YES
long enough by turning the
Main Power switch ON and
waiting 2minutes for the display
to come on. Did you find and
YES
correct the condition?
Is the
system
operat-
ing OK
now?
YES
YES
YES
System OK
Re-install two
way commu-
nication if dis-
connected
earlier.
Replace micro and operate
NO
system in order to verify repair.
Did you find and correct the
(MPR Code #1)
condition?
Remove new micro and re-install old micro
back into the unit. Micro is not the fault.
Review results of above tests with your
supervisor. If necessary, go to the beginning
of the tree & test again.
Disconnect two way communications from
unit and install J1 jumper. This will eliminate
YES
remote communication from the system.
NO
YES
Check Micro Status
LED blink rate.
Micro Status LED
is blinking at 1
second ON & 1
second OFF.
NO
NO
Inspect and repair
he 3 wiring
harnesses for the
micro and display:
the cable from the
micro to the back of
the display, the
cable from the back
of the display to the
display itself and the
ribbon cable from
the keypad to the
Did the loading
board. Did you find
of the software
and correct the
correct the
condition?
problem?
NO
(MPR Code #2)
YES
NO
9−14
Micro Status LED is blinking
at 1/2 second ON & 1/2
second OFF.
Load current version
of software from http://
www.transcentral.
carrier.com Did the
current version of
software load correctly?
YES
NO
Go To Condition 8 - Program-
ming Problems with PC
Cards if using a PC Card to
upgrade software. Did the
software load correctly?
YES
NO
NO
Review the results of
above tests with your
supervisor. If necessary,
go to the beginning of the
tree & test again.
YES
System OK,
re-install two way communica-
tions if disconnected earlier.