HP 8560A

n To display the nominal YTO’s frequency, press (CAL), MORE, FREQ DIAGNOSE, LO FREQ .
Table 10-3. YTO Frequency in TEST Position
Roller Oscillator Frequency YTO Pretune Accuracy Nominal YTO Frequency
-104 to -93 MHz
+30/-10 MHz
LO Frequency +lO MHz
-93 to -73 MHz
f20 MHz LO Frequency
-73 to -65 MHz
+lO/-30 MHz
LO frequency -10 MHz
65 to 73 MHz
+30/-10 MHz
LO Frequency +lO MHz
73 to 93 MHz
f20 MHz LO Frequency
93 to 104 MHz
+lO/-30 MHz
LO Frequency -10 MHz
Troubleshooting Using the TAM
When using Automatic Fault Isolation, the TAM indicates suspected circuits that need to be
manually checked. Use Table 10-4 to locate the manual procedure.
Table 10-5 lists assembly test connectors associated with each Manual Probe Troubleshooting
test. Figure 10-3 illustrates the location of Al4 and Al5 test connectors.
Al4
Al5
FREQUENCY RF
CONTROL
J901
3501
J304
37
J23
J17
J302
J 16
Ji8 Jj9
(REVISION
CONNECTOR)
SK1103
JZOO
3602
(REVISION
J5O2 CONNECTOR)
JlCil A15d2Jl
J400
J$Ol
J801
Figure 10-3. Al4 and Al5 Test Connectors
10-8 Synthesizer Section