HP 8642A Operating Manual page 304

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COL Q
COL 1
p / o l
COL 2
COL 3
COL 4
COL 5
ROW Q
R O W 1
ROM g
ROW 3
ROH 4
ROW 5
ROW 6
ROW 7
14
14
:OL
5
SS1
KEY DWNIL)
XI
A
LCD CLOCK
J-LTL
X2
X3
' I S '
" 4 "
"2*
" I "
CHES
U\.
SCK I D
CS ALL (L)
C tH) /D <U
RESET LCD (L)
LCD CLK
OISP BUSY ID
LIGHT 2
LIGHT 1
LIGHT COM
510 IH)
S I 1 |H)
S I 2 tH]
S I 3 IH]
SI 4 tH)
S I 5 tH)
RPG DIP
-> 3
-> 4
-> 5
~» 6
-> 7
- » 4 7
-* 1
-» 2
-» 3
-» 4
-> 5
-> 6
■^ 7
-* 8
. KEYBOARD
-
>
~ \ | MATRIX
LINES
> > 'i
4
GD BD4
■ ^ 4 7
- * i
KEY DWN [L)
> G D BD4
HP-IB SWITCH
OUTPUTS
QD)
BD4
GD—i G_)
fsn—i GD—
GD—i
DISP BUSY [L]
FH5BD4
LCD LIGHTING
S I 0 - S I 5
-» 9
-» 10
4 H
GD--
P / 0 |
- M S
RPG CHANGE (L)
RPG DIP
> — G D
B D 4
RPG CHANGE (L)
5DBD3,4
10
516(H)
S I 7 (H)
SIB(H)
518(H)
~ 1 6
/ "
S I 1 0 1H)
+5V(F2) (LCD)
^ GND 1 (LCD)
S I 6 - S I 1 0
SS2
- M l >
^ ^
POHER SUPPLY
AND GND
LCD BUSY ID
A1A2 LCD DISPLAY ASSEM!
-> 7 >■
-> 1 >■
-> 5 >■
-» 2 >-
B >
7 >■
B >-
9 >
1 >
P / 0
P2
• L I G H T S
P/0
PI
' LIGHT COM
LIGHT 1
P / 0
P2
LCD
-» 4 > — -
- * 6 >
SCK (L)
CS ALL (D
P / 0
PI
- » 2 > - -
-> 3 >
' C t W / D t L )
RESET LCD I D
P/0
P2
LCD CLK
P / 0
PI
______
S I K H )
S I 2 (H]
S I 3
10 >—t-
11 > — -
514(H)
SI5 (H)
LCD DRIVERS
P/0
P2
i o > —
r
9
> _
r
B > - H -
» 5 > — ^
SIB (H)
S I 7 (H)
~T
SIB (HI
519(H) J
S I 10 (H)
3 >-+■
+BVIF1L
GND
L -
POWER SUPPLY
AND GND