Toshiba T1910 - 1.2 System Unit Block Diagram

1.2 System Unit Block Diagram
Figure 1-3 is a block diagram of the T1910 Series system unit.
vee: +5V
B5V: Backup 5V
RTC 3V RTC 8acku :
p
vee
BIOS ROM
MCV:
Power supply microprocessor
~ 12Y
128Kx8bit
CPU3V:
+3.3V
K
B3V:
Backup3.3V
(+5V)
(+5V)
(+3V)
(+5
(+3
(+3
V)
.3V)
.3V)
CPU3V
CPU 1488SX
k;)
83V
SyatenI
h4MBS
(CACHE 8KB)
Memory
i
:
I
()
I
j20MB
I
I
---'
<
')
512K x 8bIl x 8
B3V
Syatem Controller - G A
<- vee
Maximum
SerIal Port 9P1n
vee
T9901-SI
~
)
'-
DMA x 2. PIC x2. PIT x 1. SIC x 1
text. FDD
25P1n
FOe x 1. VFOx 1
~
Int. FDD
3.5-
<
~
HOD
2.5"
(IJ
~
RTC3V
CD
<
RTC
c
(IJ
BSY
-
VGA ConInIIIr GA
T1910fT191OCS:
q85V
YRAM
I
t"
GOGH
Monochrome
LCD (T1910)
STN color LCD (T191OCS)
C
)lB5V
I PCMCIA ConL-GA
.. PCMCIA C8rdl
~VCC
K
KBC h
lint. Keyboard
r--
Ball Paint Mouse
~
_~P!'! __
1PS12 Keyboard
i.-.
PS/2 McMe Port
I
~
Figure 1-3 T1910SeriesSystemBoardBlockDiagram
T1910 Series Maintenance Manual Addendum ---------------
Add-3