Tektronix WFM8200, Service Manual

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General Maintenance
Table 4-3: Required test equipment (cont.)
Test equipment Requirements Example
Voltmeter Fluke 87 or equivalent
DC Ammeter with Clamp on pickup 20 Amp DC capable Fluke 336 or equivalent
Oscilloscope Video trigger capability Tektronix TDS3000C Series, Tektronix
DPO70404
Table 4-4: Symptoms and causes
Symptom Possible Sources or Recommended Detailed Troubleshooting Procedure to follow
No LEDs lit and/or LCD not
working Perform general checks
Perform primary power supply checks
Perform secondary power supply checks
Perform Front Panel button Troubleshooting
Perform LCD troubleshooting test
Replace main circuit board or Front Panel assembly as indicated by above tests
Inconsistent or partial hardware
failures
Perform primary power supply checks
Perform secondary power supply checks
Examine Power-up Diagnostics results in the Diagnostic Log
Run Advanced Diagnostics
Replace Main circuit board
Fails any of these Power On
Diagnostics:
Main Board Option
Main Board Power Supplies
Main Board Sensor
Main Board Serial EEPROM
Main Board Serial FLASH
DSP FPGA A/B COMM
DSP FPGA A/B Program
Display FPGA COMM
Display FPGA Program
Review messages in diagnostic log
Perform primary power supply checks
Perform secondary power supply checks
Run Advanced Diagnostics and look for other information
Replace the main board
Fails any of these Power On
Diagnostics:
Composite DAC Comm:
Composite SPI Comm:
Front Panel Version
Information
Review messages in diagnostic log
Perform primary power supply checks
Perform secondary power supply checks
Run Advanced Diagnostics and look for other information
Replace the Composite board
WFM8200 and WFM8300 Waveform Monitors Service Manual 4–7