Toshiba Satellite A40 Maintenance Manual - Page 80
Procedure 2, Printer Port LED Check, System Board Troubleshooting, Troubleshooting Procedures
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2.4 System Board Troubleshooting 2 Troubleshooting Procedures Procedure 2 Printer Port LED Check The printer port LED displays the IRT status and test status by turning lights on and off as an eight-digit binary value for boot mode. Figure 2-2 shows the printer port LED. Figure 2-2 Printer port LED Figure 2-3 shows the function of the printer port LED board. Lighting (ON) Not-lighting (OFF) Printer port LED status = 35 H (Binary notation) (Hexadecimal notation) Figure 2-3 Printer port LED board Satellite A40 Maintenance Manual (960-458) 2-21
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2.4
System Board Troubleshooting
2
Troubleshooting Procedures
Satellite A40 Maintenance Manual (960-458)
2-21
Procedure 2
Printer Port LED Check
The printer port LED displays the IRT status and test status by turning lights on and off as an
eight-digit binary value for boot mode. Figure 2-2 shows the printer port LED.
Figure 2-2
Printer port LED
Figure 2-3 shows the function of the printer port LED board.
(Binary notation)
(Hexadecimal notation)
Lighting (ON)
Not-lighting (OFF)
Printer port LED status = 35 H
Figure 2-3
Printer port LED board