Repairs of C band receivers at AIR PUNE

Shri P.R.Waichal,AIR Pune

C band receivers are extensively used in AIR network. AIR Pune has developed an expertise in repairing the same. After the successful repairs of the station receivers, as per instructions from ADG (WZ) this station is working as a nodal centre for repairs of Sonifex digital recorders and C band receivers since last one year.

   Frequently observed problems:

     1.       The receiver is unable to communicate with computer.

     2.     Receiver is stuck up with only one frequency.

    3.     IC 75174 & IC 75175 are found to be malfunctioning.

     4.     It is observed that in some cases IC 16552 is found to damaged.

     5.     Software gets corrupted.

   
Suggestions:

1.        Adequate cooling should be maintained for proper functioning of C Band receivers.

2.        In case of software corruption master reset should be carried out & all the parameters should be loaded again.

3.       In case of communication failure with PC   Voltages at the port M & C should be checked.  
          In  the event of any  abnormality IC 75174 & IC 75175 needs to be replaced.

4.      As the Printed Circuit board  is a multilayer PCB it is advised that soldering should be attempted by skilled hands only.

5.       It is suggested that soldering should be carried out with SMD gun only.

Summary of the work:
  AIR PUNE  has repaired receivers of following stations till this date.

1.     AIR Panaji                       2 No

2.     AIR Jalgaon                    2 No 

3.    AIR Chhindwada           2 Nos

4.    AIR Betul                         2 Nos

5.    AIR  Ambikapur            1 No

6.    AIR Ahwa                        1 No

7.    AIR Satara                      1 No

For further details contact Shri P.R.Waichal,AIR Pune on pune@air.org.in