Agilent Technologies 35670A Service Manual page 212

Troubleshooting the Analyzer
To perform self tests
Step 3. Determine the probable faulty assembly and next test by comparing the
G
analyzer's symptoms to the following table.
Failure
Disk drive
GPIB
Serial port
Parallel
External trigger
Tachometer
Source
Autorange
Overrange
External keyboard
External monitor
Microphone power
Microphone adapter
Performance test
Intermittent failure
† The circuits for the output ports are located on the A10 Rear Panel assembly except for a few output
buffers on the A7 CPU assembly. If replacing the A10 Rear Panel assembly does not fix the failure, the
A7 CPU assembly is probably faulty.
For additional information on the self tests, see ''Self-Test Descriptions'' starting on page 10-10.
4-36
Probable Faulty Assembly
A100 Disk Drive
Flexible disk
Disk drive cable
A7 CPU
A10 Rear Panel †
A10 Rear Panel †
A10 Rear Panel †
A10 Rear Panel
A5 Analog
A10 Rear Panel
A6 Digital
A5 Analog
A6 Digital
A1/A2 Input
A5 Analog
A10 F200 fuse
External Keyboard
A10 Rear Panel
A7 CPU
A77 Microphone
A5 Analog
Agilent 35670A
Next Test
Disk drive, page 4-57
Trigger failures, page 4-62
Tachometer, page 4-24
Source and calibrator, page 4-45
Auto-range, page 4-59
DIN connector, page 4-61
Microphone power, page 4-69
Performance test, page 4-42
Intermittent, page 4-40