Display Driver Connector J14 Signals; Keyboard Connector J15 Signals - HP 64100A Service Manual

Model 64100A - Service
Table 8-2. Display Driver Connector J14 Signals
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Signal
Sig. Gnd.
Sig. Gnd.
Sig. Gnd.
Sig. Gnd.
+5 Vdc
-5 Vdc
-5 Vdc
-5 Vdc
NC
NC
LIVID
LIVID
HDE
HDE
LVID
Pin No.
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Signal
LVID
HC
HC
LVSYN
LVSYN
HC
HC
LHSYN
LHSYN
HC
HC
+12 Vdc
+12 Vdc
+12 Vdc
+12 Vdc
8-16. KEYBOARD CONNECTOR J15. The Keyboard receives its signals via a ribbon
cable plugged into J15 (on the Motherboard) directly below the neck of the CRT.
The signal vs. pin number is shown in table 8-3.
Table 8-3. Keyboard Connector J15 Signals
Pin No. Signal Pin No. Signal
1 LPST
9
Gnd.
2 Ne
10
NC
3
HKA2 11 LKA3
4 HKA6 12 LKBCLK
5
HKA5 13
HKA3
6 HKA4 14
HKDN
7
HKAl
15
HKAO
8 GND 16 (No Name)
8-17. CONNECTOR J16. Four test signals from cardcage connector pins 73, 75, 77
and 78 are routed through J16 (at rear of Motherboard) to the four BNC
connectors on the Rear-panel. Although all four like-numbered pins in all card
slots are tied together, typically only the LTP and LMC signals, from the
analyzer PCB, on pins 78 (BNC port 1) and 77 (BNC port 2), respectively, are
used. Table 8-4 shows the pin assignment of J16.
MF 8-4