General Maintenance
Table 4-4: Symptoms and causes (cont.)
Symptom
Possible sources or recommended detailed troubleshooting procedure to follow
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 display
Replace Main board
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