Tektronix WFM5250, Руководство по обслуживанию

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Troubleshooting
Symptoms and Causes
Table 4: Symptoms and causes
Symptom Recommended action
No LEDs lit and no internal or external display Perform General Checks
Perform Power Switch Checks
Perform Basic Power Supply checks
Some LEDs lit, but no external display and
no internal display Perform General Checks
Verify external monitor functionality with another XVGA source
Perform Basic Power Supply Fault Checks
Perform CPU Boot Checks
Internal display functions normally but
external display does not function normally Verify external monitor functionality with another XVGA source
Replace FPGA board
External display functions normally but
internal does not Perform LCD Troubleshooting
The display functions normally but the front
panel buttons are all dark or inoperative Check front panel cable
Replace front panel assembly
Power Up Diagnostic failures
Faults referring to main or CPU board Replace CPU board
Faults referring to FPGA functions Replace FPGA board
Fan faults Perform Fan Checks
Advanced Diagnostics failures Replace FPGA board
Functional or Performance Veri fi cation Test
Failures
Perform Power Up Diagnostics
Perform Advanced Diagnostics
Perform Diagnostic Monitor Voltage Checks
SDI in, one channel bad Replace Video I/O board
SDI in, both channels bad Replace FPGA board
Waveform or graphic displays corrupted Replace FPGA board
SDI OUT bad Replace FPGA board
HDMI in, one channel bad Replace Video I/O board
HDMI in, both channels bad Perform HDMI input checks
HDMI OUT bad Replace Video I/O board
Audio bars bad Replace FPGA board
USB bad Replace CPU board
Ethernet bad Replace CPU board
Fans bad Perform Fan checks
Headphones bad, audio bars okay Replace CPU board
Reference or LTC waveform bad Check Reference I/O cable
Replace Reference I/O board
16 WFM5250 Waveform Monitor Service Manual