Condor Application Note 5/00 LINEAR TROUBLESHOOTING GUIDE AN-109 WARNING! RISK OF FIRE & SAFETY! Repair must be performed by a Condor authorized personnel No Output: • Visually inspect the supply for open fuses, burnt or discolored parts vented capacitors and loose wiring. • Verify AC and DC fuses are not open. • Verify AC voltage is reaching the input of the transformer. • OHM output diodes and transistors to see if they are shorted. • Check for solder fractures or traces of arcing on circuit side of PCB. Low Output: • Visually inspect for open fuses, loose wiring, burnt or discolored parts and vented capacitors. • Use sense wires to compensate for up to 0.25 volts of drop in the DC load cables. • Monitor the output voltage and readjust the voltage POT if necessary. • Check the current limit POT and verify the seal has not been broken, if so readjust it. • With a meter, check the output diodes and transistors to see if they are shorted. Poorly Regulated Output: • Visually inspect for poorly soldered or loose output wiring. • Verify pass transistors screws are properly not loose. High Ripple: • Visually inspect for poorly soldered or loose output wiring. • Inspect for dried out capacitors or vented output capacitors. Output Oscillates: • Visually inspect for burnt or discolored parts, vented capacitors and shorted components. Adjustment of output voltage pot: • To raise the output voltage, monitor the output and turn the voltage POT clockwise. Environmental Specifications: • Maximum ambient temperature for continuous output is 50°C. • For operation above 50°C., see Operation Temperature Limits chart below. • See installation instructions for models that require fan cooling. • Operating temp: 0-50°C. full load, for 70 degrees C., de-rate to 40%. • Non-Operating temp: -40 to +85 °C. • Operating altitude: -500 to 10,000 feet. Condor D.C. Power Supplies, Inc., 2311 Statham Parkway, Oxnard, CA 93033 800-235-5929 • Tel: 805-486-4565 • Fax: 805-487-8911• www.condorpower.com Condor Application Note 5/00 • • Non-Operating altitude: -500 to 40,000 feet. Maximum Relative Humidity 96%, non- condensing. Linear Enclosures: • Condor doesn’t provide off the shelf enclosures for the Linear line. An enclosure may be used, but may require airflow and or de-rating of the output current. Verify the heat sink temperature does not exceed 90°C. for any length of time. Over Voltage Protection: • OV-12 & OV-24 is user adjustable from 6.2 to 33 volts. A single OV module is required for both single and dual output power supplies. • For specific instructions see application data sheet #11327. • OV-12 protects up to a maximum continuous current of 8A and protects up to 12 amps intermittent and is used on the 12V to 28V & +/- 12 & 15V models. • OV-24: protects up to a maximum continuous current of 20A and protects up to • Protects up to 24 amps and is used on the E & F Cases. AC HOOK UP CHART 100 VAC 1 1 1 2 2 2 3 120 VAC 5 4 3 215 VAC 5 4 3 1 230-240 VAC 5 4 2 3 5 4 AC HOOK UP EXAMPLE: For 120 VAC operation, connect AC Line to transformer pin 1, Neutral to transformer pin 4, and put a jumper wire from pin 1 to 3 and a separate jumper wire from pin 2 to 4. OPERATING TEMPERATURE LIMITS 100 80 % OF FULL LOAD 60 40 20 S1 0 0 10 20 30 40 50 60 70 TEMPERATURE, DEGREES C. Condor D.C. Power Supplies, Inc., 2311 Statham Parkway, Oxnard, CA 93033 800-235-5929 • Tel: 805-486-4565 • Fax: 805-487-8911• www.condorpower.com