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Troubleshooting

6- 102

TDS 420A, TDS 430A & TDS 460A Service Manual

Figure 6- 52: Console Tr oubleshooting Procedure

Until changing a module fixes the

problem, replace in order the

A02 Display, the D1 Bus cable, the

A09 DSP, and the A03 CPU modules.

Done.

Yes

Until changing a module fixes the problem,

replace in order t he A03 CPU, the

A09 DSP, the A02 Display, and the

A01 Backplane modules.

Use this procedure when

troubleshooting with the

console.

Power off the oscilloscope. Using the Front Cover,

Rear Cover, Cabinet, Rear EMI Gasket, and Cabinet

Handle and Feet disassembly procedure,

remove the cabinet.

Using the Console Port Set Up procedure,

connect the console-port cable to J3 on the

A03 CPU module.

Observe your terminal as you turn on the power

to the oscilloscope. Note the first failure or

where the tests stop.

Is the

last displayed

message Acq Number

of Digitizers?

Perform the I2C Isolation

troubleshooting procedure.

Are the

first characters of

the name of the

first failed

diagnostic

dsp?

Until changing a module fixes the

problem, replace in order the

A09 DSP, the A03 CPU, the

A02 Display, and the A01 Backplane

modules.

Yes

Are the

first characters of

the name of the

first failed

diagnostic

dsy?

Yes

Until changing a module fixes the problem,

replace in order t he A03 CPU, the A09 DSP,

the A02 Display, and the

A01 Backplane modules.

Are the first

characters of the

name of the first

failed diagnostic

cpu?

Yes

Are the

first characters of the

name of the first failed

diagnostic atBus?

Brand	Tektronix
Model	TDS 420A
Category	Test Equipment
Language	English

Tektronix TDS 420A Service Manual

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