HP Portable PLUS - Page 144

Portable PLUS Computer
Reference Information 10-19
Table 10-3. SNALlnk/3270 Test Board Replaceable Parts
Reference
HP
Description
Quantity
Designation
Part Number
Ul
1820-3185
INTEGRATED CIRCUIT, 74HC14
1
U2
1820-1429
INTEGRATED CIRCUIT, 74LS160
1
U3
1820-3081
INTEGRATED CIRCUIT, 74HC74
1
Y1
0410-1294
CRYSTAL, 32.768 kHz
1
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tSW c~ t~C~t~
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fEULE
I1PUf thf
» T TTT
R5-U2
'"
TI '
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"
"'
U2
,,~
II
" U 3
'"
'TO
"
II
Ii '"
."
IS'
lUD
"
11
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ITS
II.
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,n
II
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at,
"
"
.to
"
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II
"
JIDtE
I
tll
II
'U
ttl
'"
nDtE
•
51.
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Figure 1 0·5. SNALink/3270 Test Board Schematic Diagram