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Chapter 4 Troubleshooting and on-board repair MDC-2900 Series
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4.2.2 Status indicator lamp
Three LED (Light Emitting Diodes) lamps are provided on the logic PCB in the Display unit. The
operational conditions are indicated by these LED's. Refer to the following table for details.
Table 4.3 Status indicator lamps
LED No.
Content
Operation status
LED status
DS1 Software
status
Normal Flashing
Abnormal OFF
DS2 Hardware
status
Normal Flashing
Abnormal
ON or OFF
DS3 FPGA
status Normal Flashing
Abnormal
ON or OFF
Location of status indicator lamps
Figure 4.2 Status indicator lamp locations
E56-701*
E59-710*
Status indicator lamp
DS1
DS2
DS3
E59-700*
*Subject to version change