Figure :3-2. Model 330/350 Block Diagram - HP 330 Service Information Manual

EXPANDER
~
~
r----+'
RGB
rv
POWER
t:J
VIDEO BOARD
SUPPLY
-12
~
&Q'
=
"1
~
c.-;
I
HS/HP-IB w
... +12
HS DISC ADD-ON
==
-
0
LARGE HP-IB
Q.
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FAN SYSTEM INTERFACE HP-HIL ~
KEYBOARD
c.-;
-
-
~
BOARD
c.-;
RS-232
=
--
c .-;
I
HP-HIL DEVICES
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=
ttl
-
r-4 R
I
4/12 MBYlE
0
4 MBYTE
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II' i :' "
SMALL
RAM
RAM ADD-ON
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FAN
OQ ~-121
"1
~
CONTROLLER BOARD
~
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9
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SYS.
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Model 350 only
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LEDi U
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PROCESSOR
00
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BOARD
-6.
4 MBYTE
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RAM
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01
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