HP 3562A Service Manual page 406

MODEL 3562A
Perform steps 1 through 5 as follows:
f.
1 . Press the line switch off.
2. Put A32 ADC 2 on the 03562-66541 extender board.
3. Press the line switch on.
4. Repeat part C.
5. Use a scope to verify the signals in table 7-14 are operating correctly.
Test
Location
A34 TP303
A31 TP3
Perform steps 1 through 4 as follows: .
G .
1 . Press the I ine switch off.
2. Put A30 Analog Source on the 03562-66541 extender board.
3. Press the line switch on.
4. Use a scope to verify the signals in table 7-15 are operating correctly. Press A2 S1
(reset switch on A2 CPU) to view the STIM@ and CAL TRIG waveforms (these signals
are disabled when calibration is finished).
A30 TP8
A30 ) 30-1 9
Perform the following steps:
H .
1 . Press the line switch off.
2. Put the A1 Digital Source on the 03562-66540 extender board.
3. Press the line switch on.
7-42
Table
7-1 4
Signal
T R I G 2 @
T R I G RO
Table
7-1 5
Press A2 51 to view waveforms.
ST I M @
CALT R I G
TrIgger SIgnal Check #2
Waveform
'n/Out Number
A34 Out #1 6
A31 Out #1 6
Trigger Signal Check #3
A30 Out #1 7
A30 Out #1 7
FAULT ISOLATION
Probable Cause
of Failure
A34 ADC 2 (go to 8-1 9)
A31 Trigger (go to 8-1 8)
A30 A N LG SCE (go to 8-1 7)
A30 A N LG SCE (go to 8-1 7)