( H ) NO CURRENT CONTROL.
NO CURRENT CONTROL
Is Current Pot Open ? | Y | Replace it. |
N
Are Wires related to Current Pot OK ?
Y
Ensure proper Connectivity.
1.Check the Current Potentiometer. It might be Open.
2.Check all Wires related to Current Potentiometer.
( I ) POOR LINE REGULATION.
POOR LINE REGULATION |
|
|
|
Improper Device Drop Setting. | Y | Keep the Input Supply at rated I/P. | |
|
| Keep the O/P Supply at rated Vtg. | |
N |
| and rated | Load. Measure Vtg. |
|
| across O/P | +Ve and Capacitor |
Leaky Summing Capacitor C4. |
| +Ve Adjust that Vtg. between 4.5V | |
Y |
| to 5V with Preset VR1 ( 5K ) on | |
| PREG PCB. |
| |
Replace It.
1.Check whether Device Drop is between 4.5V to 5V. It might not be proper.
2.Leaky Summing Capacitor C4 on PREG PCB.
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