Tektronix WFM8200, Service Manual

Page: 48 / 85

General Maintenance
Table 4-4: Symptoms and causes (cont.)
Symptom Possible Sources or Recommended Detailed Troubleshooting Procedure to follow
Fails any of these Power On
Diagnostics:
Eye Hardware Revision
Eye Board Cable Version
Eye Register Readback
Eye Board Power Supply
Eye Board Cal EEPROM
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 EYE/PHY board
Failures while running the
advanced diagnostics:
DSP1 QDR1 Memory 1
DSP1 QDR2 Memory 2
DSP2 QDR1 Memory 1
DSP2 QDR2 Memory 2
DSY DDR Buffer 1 Memory
DSY DDR Buffer 2 Memory
DSY DDR Trig Buffer Memory
DSY SDRAM Buffer 1 Memory
DSY SDRAM Buffer 2 Memory
Perform secondary power supply checks
Replace main board
Diagnostic Log Message:
Fail
AUDIO_DSP_HEARTBEAT
Search for an intermittent problem in the audio board, cables, or main board.
No text or traces on LCD Perform LCD troubleshooting test
Traces on LCD but not on Ext
Display output Replace Main board
4–8 WFM8200 and WFM8300 Waveform Monitors Service Manual