SELF-DIAGNOSTIC MODE  20 June 2005 
 
5-136 
 
5.5.2  DETAILED SELF-DIAGNOSTIC MODE 
In addition to the self-diagnostic test initiated every time the main machine is 
powered on, you can set the machine in a more detailed diagnostic mode manually 
in order to test other components or conditions that are not tested during self-
diagnosis after power on. The following device is required in order to put the 
machine in the detailed self-diagnosis mode. 
 
No. Name 
G02119350  Parallel Loopback Connector 
 
Executing Detailed Self-Diagnosis 
Follow this procedure to execute detailed self-diagnosis. 
1.  Switch off the machine, and connect the parallel loopback device to the 
Centronics I/F port. 
2. Hold down , press and hold down , and then while pressing both keys at 
the same time, switch on the machine. 
You will see “Now Loading” on the touch-panel, and then you will see the 
results of the test.