SYMPTOM: | CAUSE: | SOLUTION: |
UNIT DOES NOT PRODUCE SOUND. POWER LED DOES NOT LIGHT.
•POWER SWITCH NOT IN ON POSITION.
•POWER CABLE NOT CONNECTED TO AMPLIFIER OR TO OUTLET.
•AC OUTLET NOT ACTIVE.
•MAIN AMPLIFIER FUSE DEFECTIVE.
•MOVE POWER SWITCH TO ON POSITION.
•CONNECT POWER CABLE TO AC SUPPLY.
•CHECK CONDITION OF OUTLET.
•REPLACE AMPLIFIER MAIN POWER FUSE ON REAR PANEL WITH CORRECT TYPE AND RATING.
•IF THE FUSE BLOWS A SECOND TIME DISCONTINUE USE AND CONTACT A QUALIFIED SERVICE TECHNICIAN
POWER LED LIGHTS, BUT NO SOUND IS PRODUCED BY AMPLIFIER.
•NO INPUT SOURCE SIGNAL.
•INPUT SOURCE NOT CONNECTED.
•INPUT CONNECTING CABLE DEFECTIVE.
•SPEAKER(S) NOT CONNECTED.
•SPEAKER CABLE DEFECTIVE.
•SPEAKER SYSTEM(S) INOPERATIVE.
•AMPLIFIER’S LEVEL CONTROLS ARE SET TO ZERO.
•CHECK FOR PROPER FUNCTION OF INPUT SOURCE DEVICE.
•CHECK INPUT CABLES AND CONNECTIONS. REPLACE QUESTIONABLE CABLES WITH KNOWN GOOD CABLES.
•CHECK SPEAKER CABLES AND CONNECTIONS. REPLACE QUESTIONABLE CABLES WITH KNOWN GOOD CABLES.
•CHECK OPERATING CONDITION AND STATUS OF SPEAKER SYSTEM(S).
•BE SURE THE LEVEL CONTROLS ARE PROPERLY SET.
SOUND IS PRESENT BUT VOLUME IS TOO LOW EVEN THOUGH SOURCE DEVICE IS SET TO AHIGH LEVEL.
•AMPLIFIER INPUT LEVEL CONTROLS ARE SET TOO LOW.
•WRONG PIN CONNECTIONS IN CABLES.
•ADJUST LEVEL CONTROLS AS PER INSTRUCTIONS.
•USE CORRECT CABLES (AS SHOWN ON BACK OF UNIT).
LOUD 60 CYCLE HUM IS HEARD AT ALL TIMES THROUGH THE SPEAKER SYSTEMS.
•IMPROPER OR DEFECTIVE GROUND CONNECTION AT INPUTS. IMPROPER OR DEFECTIVE GROUND AT INPUT SOURCE DEVICE(S).
•IMPROPER OR DEFECTIVE GROUND CONNECTION ON AC OUTLET.
•GROUND LOOP THROUGH AC LINE CONNECTION/ RACK MOUNTING.
•CHECK FOR PROPER AC LINE GROUND ON POWER AMP AND ALL INPUT DEVICES.
•CHECK INPUT CABLES FOR ALL SOURCE DEVICES AND SIGNAL PROCESSING AS WELLAS INPUT CABLES TO POWERAMPLIFIER. CHECK POSITION OF GROUND LIFT SWITCH AS PER INSTRUCTIONS FOR LIFTING THE GROUND.
•NEVER LIFT THE AC LINE GROUND ON THE POWER AMPLIFIER. IF YOU ARE NOT TOTALLY FAMILIAR WITH GROUND LIFTING OR UNIFICATION PROCEDURES, DO NOT ATTEMPT THEM WITHOUT FIRST CONSULTING YOUR DEALER OR A QUALIFIED SOUND TECHNICIAN FOR MORE INFORMATION ON GROUNDING. IMPROPERLY DONE, SUCH PROCEDURES CAN POSE A SAFETY AND/OR FIRE HAZARD.
SOUND IS DISTORTED. | • DISTORTION OCCURRING IN SOURCE DEVICE. |
| • INPUT LEVEL IS SET TOO HIGH. |
•CHECK CLIP INDICATORS ON INPUT SOURCE DEVICES AND RESET LEVELS IF NECESSARY TO ELIMINATE DISTORTION.
•ADJUST LEVEL CONTROLS AS PER INSTRUCTIONS.
FUSE BLOWS INTERMITTENTLY. | • SPEAKER LOAD IMPEDANCE IS TOO LOW. |
| • TYPE OR RATING OF THE FUSE IS NOT CORRECT. |
•CHECK FOR SHORTS ON THE OUTPUTS.
•CHECK YOUR SPEAKER IMPEDANCE (INFO FROM DEALER).
•CHECK THAT THE FUSE TYPE AND RATING IS CORRECT.
POWER LED LIGHTS BUT THERE IS NO SOUND FROM ONE OR BOTH CHANNELS.
•SECONDARY DC FUSES ARE BLOWN (ON EITHER ONE OR BOTH CHANNELS INDICATING FAILED A FAILED CHANNEL OR CHANNELS.
•IF ONLY ONE CHANNEL FAILS, THE SECOND MAY STILL OPERATE, BUT THE UNIT SHOULD BE SERVICED AS SOON AS POSSIBLE. CONTACT THE GEMINI SERVICE DEPARTMENT OR YOUR AUTHORIZED DEALER TO SPEAK TO A QUALIFIED SERVICE TECHNICIAN.
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