Toshiba T4500 User Manual page 36

(10)
SYSTEM MEMORY PARITY ERROR
(11)
EXTENDED MEMORY ERROR
(12)
EXTENDED MEMORY PARITY ERROR
(13)
DMA PAGE REGISTER ERROR
(14)
DMAC #1 ERROR
(15)
DMAC #2 ERROR
(16)
PIC #1 ERROR
(17)
PIC #2 ERROR
(18)
KEYBOARD ERROR
(19)
KBC ERROR
(20)
HDC ERROR
(21)
HDD #0 ERROR
(22)
HDD #1 ERROR
(23)
NO FDD ERROR
(24)
FDD ERROR
(25)
TIMER INTERRUPT ERROR
(26)
RTC UPDATE ERROR
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. Figure 2-2 shows the printer port LED.
NOTE: When you perform this check, the external FDD/PRT (T4500 and T4500C) or
parallel port (T4600 and T4600C) option in the SETUP program must be set to PRT (T4500
and T4500C) or LPT1 (T4600 and T4600C).
2-12
Figure 2-2 Printer Port LED