HP 8340b

A50
Pin
I/O
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Mnemonic
-5.2V
GND
HLEY
+5.2V
HFILYO
YO COIL
+
LOMD
YO COIL
-/-40V
+20V
-10V
-10V
+20V
YO COIL
-/-40V
YOCOIL+
HULY
+5.2V
GND
-5.2V
A50W1P2
PIN1
PIN
2
PIN
3
PIN
4
PINS
PING
PIN 7
PIN 8
PIN 9
PIN 10
PIN
11
PIN 12
PIN 13
PIN 15
PIN 16
PIN 17
PIN 19
PIN 20
Levels
-52V
0V
TTL
(HIGH
TRUE)
+5.2V
TTL
(HIGH TRUE)
-40V
TO
-20V
TTL
(LOW TRUE)
-40V
+20V
-10V
-10V
+20V
-40V
-40V
TO
-20V
TTL
(HIGH
TRUE)
+5.2V
0V
-52V
Note.
Refer
to
A50
YO
Loop
Interconnect
Schematic
Diagram and
A62
motherboard wiring
list
for
signal
source
and
destination
information.
HP
8340B/41B
Assembly-Level
Service After
Service
Safety
Checks