Troubleshooting
TDS 420A, TDS 430A & TDS 460A Service Manual
6-83
Table 6- 10: Diagnostic Failure Priority Lists
Module Cpu Dsp Dsy Attn Acq
Back-
plane
D1
Cable
Acq
Cable
Attn
Cable
Attn/
Acq
Jumper
Board
Front
Panel
Cables
Fp
Cpu 1 2 3 4 5
Cal Initialization 1
Cpu/Dsp or AT bus 2 1 3 4
Dsp 1 2 4 3
Cpu/Dsp/Dsy or D1 bus 3 1 4 2
Cpu/Dsp/Dsy or AT bus 1 2 3 4
Dsy 3 1 4 2
Cpu/Attn or I2C bus 2 1 4 3 3
Attn 1 3 2
Cpu/Acq, D1/I2C bus 5 4 1 2 3
Acq 3 1 4 5 2
Acq/Attn 2 3 4 1
Fp/Cpu 3 2 1
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