HP 8560A, Service Manual

Page: 427 / 450

Table 12-1. Power-Cable Connections (2 of 2)
Signal
V
V
V
V
V
V
LINE TRIGGER
+15 V
+15 V
- 1 5 V
- 1 5 V
12
11
10
9
8
7
6
39
40
41
42
43
44
45
46
47
48
49
50
* Indicates signal source connectors.
4 0 *
42*
414J1
Table 12-2. Automatic Fault Isolation References
Suspected Circuit Indicated Manual Procedure to Perform
by Automatic Fault Isolation
Check A2 Controller Blanking Signal
Check All Power Supply Outputs Dead Power Supply
1-5)
Check Buck Regulator Dead Power Supply
(steps 22-23)
Check Buck Regulator Control Circuitry Dead Power Supply
(steps 11-21)
Check High-Voltage Supplies High Voltage Supplies
Check Input Rectifier Dead Power Supply
(steps
Check Intensity Adjustments Intensity Problems
(steps
4)
Check Kick Start/Bias Circuitry Dead Power Supply
(steps
Check Low-Voltage Supplies Low Voltage Supplies
Troubleshooting Using the TAM
When using Automatic Fault Isolation, the TAM indicates suspected circuits that need to be
manually checked. Use Table 12-1 to locate the manual procedure.
Table 12-2 lists assembly test connectors associated with each Manual Probe Troubleshooting
test. Figure 12-2 illustrates the location of
test connectors.
12-4 Display/Power Supply Section