Computer Interconnection Diagram - HP 9020 Service Manual
Hp 9000 series 500 model 520
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Also See for 9020:
- Configuration manual (1444 pages) ,
- Handbook (141 pages) ,
- Update manual (9 pages)
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ACMODULE
POWER
SUPPLY
MOTHERBOARD
1/0
BACKPLANE
Theory of Operation
2-3
DISPLAY
-,
_
-J).--~""
___
--IIJ---""""P81C(4) P81A J42(12)
P81B J43(70)
P82A J46 (36)
(50)P1
(SO)P2
(80)P3
(80)P4
(80)P5
(80)P6
(60)P7
(60)P8
(60)P9
I
UPT04110 CARDS
NOTE
P82B J47 (50)
P83A J45(50)
P83B J44 (24)
PROCESSOR
STACK
J48(25)
(96)J40 J12
(70)P10
(70)P11
(50)P13
(2)P14
1
RESERVED FOR EXPANSION
}
CONTROLLER CARD(S) ANDIOR
BOOTSTRAP LOADER CARD
RESERVED FOR EXPANSION
1/0 DOOR INTERLOCK
r-
POWER SUPPLY FAN
(7) J52
t--.......
....-I/O CARD CAGE FAN
L-
PROCESSOR STACK FAN
FLEXIBLE DISC DRIVE
(8) J531----t!
FIXED DISC DRIVE
J49(25)
( 8 ) J 5 4 t - - - - - - - - - - - - f
J50 (50)
J51 (50)
I~
__
~A~____ ~ I~----~\
V
V
\
J3 (50)
J5 (50)
C (50)
PC (50)
TB (14)
1----1
NUMBER IN PARENTHESIS IS
NUMBER OF PINS PER CONNECTOR
PRINTER
KEYBOARD
Figure 2-2. Computer Interconnection Diagram
OPTIONAL
INPUT DEVICE
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