Keysight Technologies U3022AE10 User's And Service Manual page 78

U3022AE10
Troubleshooting the Test Set
The +9 Vdc and -10 Vdc indicator are not used, they will be off.
Figure 63 DC Power Status LEDs
S10
S11
S20
S21
Switch
Driver Bd.
= LED INDICATOR
Figure 64 Test Set Diagram
FS1
FS2 – FS3
AC Line
Filter Assy
Front Panel
Active
(5 Vdc)
78
Controller Status LEDs
P10
P11
P20
P21
Instrument Rear Panel
d. If the DC Indicator LEDs are not on, suspect the main power supply module or
front panel switch. The power supply (0950-4729) terminal connections
should also be verified with a DVM. Verify the voltages on the power supply
label.
e. If rear panel fan is not operating and the DC Indicator LEDs are on, replace fan.
N.C.
FAN 5 9 / -10vdc
4 3 / 5vdc J13
AC
3 12, 15vdc
J11
IN
2 -12, -15vdc J12
J14
1 +24vdc
Stand
SLOT
By
AMP Fan J18
(Opt 001/2)
PS1
*
(12 Vdc)
*
DC Power Supply
*
RF Switches, Mech.
(24 Vdc)
Signal Path Name
Test Set Port
FAN
*
-12 Vdc
JTAG
J1 J2 J15
P1 J9
**
Test Set Control Bd.
PCB 1
J5
*
(3, 5, -12, 12, -15 15 Vdc)
J6
J16
J3 J4
JTAG
J1 J2
J1021
Switch Driver Bd.
PCB2
J60 - 75
*
(5, 24 Vdc)
P20
P10 P11 P21
S10 S11 S20 S21
SRC REC SRC REC
3 - 5 - 7 - 9 - 11 4 - 6 - 8 - 10 - 12
Keysight U3022AE10 User's and Service Guide
Test Set Controller Bd.
TP1
GND
+9v
-10v
+12v
+15v
-12v
-15v
+3v
DC Inputs
(from PS)
+5v
+24v
Keysight U3022AE10
10-Port Test Set
Ext Control Bd.
PCB3 *
(5, 15, -15 Vdc)
*
PCB4
Ports 3,5,7,9,11 LED Frt.Pnl, (5 Vdc)
*
PCB5
Ports 4,6,8,10,12 LED Frt.Pnl, (5 Vdc)
Active ON
LED (Frt.Pnl)
*
5vdc
*
RF AMP BIAS, (Opt 001/2), (15 Vdc)
NOTES:
*
The dc voltages shown, are functionally
used by this part.
**
On board programmed Logic Device.
+12v
+15v
-12v
-15v
+3v
+5v
+24v
+24v