HP 3562A Service Manual page 402

FAULT ISOLATION
Test
location
A8 U306-8
A8 U 608-1 1
A8 U 608-1 2
A8 U608-1 4
A8 U608-1 6
A8 U608-1 7
A8 U608-1 8
A8 U S09-7
A8 US09-1 2
A8 US09-1 4
A 8 US09-1 6
A 8 U301-8
A8 U406-8
o. Perform steps 1 . through 6 for each of the following assemblies:
A2 System CPU
. AS Digital Filter
1 . Press the line switch off.
2. Remove the assembly.
3. Press the line switch on.
If the failing control line in table 7-11 is now toggling or TTL level high, start
4.
troubleshooting with this assembly (go to Section VII I).
5. Press the line switch off.
6. Replace the assembly.
Table Control Lines Set #2
7-1 1
Signal I n/Out
G D S L A 8 Out
G R/GWL A8 Out
R F D L A1 7 Out
M R F P P L A7 O u t
M R D F2L AS Out
MRDF1 L AS Out
MRFFTL A9 Out
M G D F2 L A8 Out
MG FFTL A8 Out
M G D F1 L A8 O u t
M G F PP L
A B O u t
B2G D S L A 8 O u t
DAVL A8 Out
Probable Causes
of Failure
Any assembly on the global bus:
A2 C PU , AS DGTL F LT R
A 7 F PP, A 8 RAM
A9 FFT, A1 7 DSPL .
A8 RAM, A1 7 D S P L
A 8 RAM, A7 FPP
A B RAM, AS DGTL F L TR
A8 RAM, AS DGTL F L TR
A8 RAM, A9 FFT
A8 RAM, AS DGTL F L TR
A8 RAM, A9 FFT
A 8 RAM, A S D G T L FL T R
A8 RAM, A 7 F P P
A8 RAM, A1 7 D S P L
A8 RAM, A1 7 DSPL
MODEL 3562A .
7-1.7