Toshiba Tecra 710CDT, Maintenance Manual

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710CDT/720CDT
2-15
Table 2-3 Printer port LED boot mode status (1/2)
LED status Test item Message
01H Special register initialization
02H PIT test
PIT ERROR
PIT initialization —
PIT function check
MEMORY REFRESH ERROR
TIMER CH.2 OUT ERROR
03H CMOS check
CMOS CHECKSUM ERROR
CMOS BAD BATTERY
ERROR
04H Initialization of —
memory configuration
05H SM-RAM check —
06H ROM/RAM copy
07H Selftest skip check —
08H Initialization of internal VGA —
09A System check —
0AH First 64 KB memory test
FIRST 64KB MEMORY ERROR
FIRST 64KB MEMORY PARITY
ERROR
0BH System memory initialization —
0CH System initialization —
0DH Interrupt vector initialization —
18H PIC initialization —
1FH Display initialization
VRAM ERROR
25H System memory test
SYSTEM MEMORY ERROR
SYSTEM MEMORY PARITY
ERROR
30H Extended memory test
EXTENDED MEMORY ERROR
EXTENDED MEMORY PARITY
ERROR
40H DMA page register test
DMA PAGE REGISTER ERROR
41H DMAC test
DMAC #X ERROR
42H DMAC initialization —
4AH PIC test
PIC #X ERROR
50H Mouse initialization —
55H KBC initialization
KBC ERROR
5AH Boot password —