Diagnostic information 2-45
4060-xxx
Dead machine service check
A dead machine is a condition where the display is blank, the LED on the operator panel is off, no
fans turn, no motors turn, and the fuser lamp does not come on.
If a high-capacity input tray is installed, remove the option and check the base printer for correct
operation. If the base printer operates correctly, go to “High-capacity feeder input tray service
check” on page 2-56. If the base printer continues to not operate correctly, remove any other
attached paper handling options.
Warning: Observe all necessary ESD precautions when removing and handling the system board
or any installed option cards or assemblies. See “Handling ESD-sensitive parts” on
page 4-1.
CAUTION: When you see this symbol, there is a danger from hazardous voltage in the
area of the printer where you are working. Unplug the printer before you begin, or use
caution if the printer must receive power in order to perform the task.
Remove any input and output paper handling options from the printer.
FRU Action
1 Line voltage Check the AC line voltage. If the line voltage is incorrect, inform the
customer.
2
AC line cord Unplug the line cord from the wall outlet and check the line cord for
damage, such as, a damaged plug, or cut or damaged cord. If
incorrect, replace the cord. If incorrect, check the continuity of the line
cord and replace if necessary. If the cord is correct, go to step 3.
3
+5 V dc test point on the
system board
Check for approximately +5 V dc at the +5 V test point on the system
board.
Note: Use care not to short adjacent voltage test points.
If the voltage is correct, replace the system board assembly. If the
voltage is incorrect, go to step 4.
4
System board and
interconnect board
Check the system board is firmly seated in connector J7 on the
interconnect board. If it is not seated correctly, reseat and recheck
the voltage at the +5 V dc test point on the system board.
If test point does not measure +5 V dc, go to step 5.
J24
1
GND
+3.3V
+24V
HEAT
+5V
+42V
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