HP 8753E Service Manual page 305

1 Preset
5 DSP WrlRd
9 DIP Control
10 DIP Counter
11 DSP Control
12 Fr Pan Wr/Rd
13 Rear Panel
14 Post-reg
15 FYac-N Cant
16 Sweep !l'rig
19 ABUS lbst
20 PN count
Probable Fniled
to replace ROM or A9.
between AS and A2 or on A9 assembly.
If OK, replace A16. If not, replace A9.
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