K
We have observed abnormal sound (whistling sound) from Mark V panel (Simplex) which seems to be originating from either R or C core, though its source cannot be identified clearly.
At present no alarms are appearing on Mark V alarm display, diagnostic display and display of LCC cards of both R and C core.
Segment LED display at the DCC card is showing blinking of RED LED at the rate of 0.5 Hz.
Please advise on following.
1. Probable cause/source of this sound.
2. Its effect on turbine operation / Mark V control system.
3. What is the significance of Segment LED left most bit blinking at the rate of 0.5 Hz?
4. How can we eliminate this abnormal sound?
Email address: [email protected]
At present no alarms are appearing on Mark V alarm display, diagnostic display and display of LCC cards of both R and C core.
Segment LED display at the DCC card is showing blinking of RED LED at the rate of 0.5 Hz.
Please advise on following.
1. Probable cause/source of this sound.
2. Its effect on turbine operation / Mark V control system.
3. What is the significance of Segment LED left most bit blinking at the rate of 0.5 Hz?
4. How can we eliminate this abnormal sound?
Email address: [email protected]