Gemini P-07 Operation Manual

Contents

(5)UNIT DOES NOT PRODUCE SOUND. POWER LEDDOES NOT LIGHT.• POWER SWITCH NOT IN ON POSITION.• POWER CABLE NOT CONNECTED TO AMPLIFIER ORTO 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 WITHCORRECT TYPE AND RATING.• IF THE FUSE BLOWS A SECOND TIME DISCONTINUE USE AND CONTACTA QUALIFIED SERVICE TECHNICIANLOUD 60 CYCLE HUM IS HEARD AT ALL TIMESTHROUGH THE SPEAKER SYSTEMS.• IMPROPER OR DEFECTIVE GROUND CONNECTION ATINPUTS. IMPROPER OR DEFECTIVE GROUND ATINPUT SOURCE DEVICE(S).• IMPROPER OR DEFECTIVE GROUND CONNECTIONON AC OUTLET.• GROUND LOOP THROUGH AC LINE CONNECTION/RACK MOUNTING.• CHECK FOR PROPER AC LINE GROUND ON POWER AMP AND ALL INPUTDEVICES.• CHECK INPUT CABLES FOR ALL SOURCE DEVICES AND SIGNALPROCESSING AS WELL AS INPUT CABLES TO POWER AMPLIFIER. CHECKPOSITION OF GROUND LIFT SWITCH AS PER INSTRUCTIONS FOR LIFTINGTHE GROUND.• NEVER LIFT THE AC LINE GROUND ON THE POWER AMPLIFIER. IF YOUARE NOT TOTALLY FAMILIAR WITH GROUND LIFTING OR UNIFICATIONPROCEDURES, DO NOT ATTEMPT THEM WITHOUT FIRST CONSULTINGYOUR DEALER OR A QUALIFIED SOUND TECHNICIAN FOR MOREINFORMATION ON GROUNDING. IMPROPERLY DONE, SUCHPROCEDURES 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 RESETLEVELS 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.SYMPTOM: CAUSE: SOLUTION:POWER LED LIGHTS BUT THERE IS NO SOUNDFROM ONE OR BOTH CHANNELS.• SECONDARY DC FUSES ARE BLOWN (ON EITHERONE OR BOTH CHANNELS INDICATING FAILED AFAILED CHANNEL OR CHANNELS.• IF ONLY ONE CHANNEL FAILS, THE SECOND MAY STILL OPERATE, BUTTHE UNIT SHOULD BE SERVICED AS SOON AS POSSIBLE. CONTACT THEGEMINI SERVICE DEPARTMENT OR YOUR AUTHORIZED DEALER TOSPEAK TO A QUALIFIED SERVICE TECHNICIAN.POWER LED LIGHTS, BUT NO SOUND ISPRODUCED 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 QUESTIONABLECABLES WITH KNOWN GOOD CABLES.• CHECK SPEAKER CABLES AND CONNECTIONS. REPLACEQUESTIONABLE 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 LOWEVEN THOUGH SOURCE DEVICE IS SET TO A HIGHLEVEL.• AMPLIFIER INPUT LEVEL CONTROLS ARE SET TOOLOW.• WRONG PIN CONNECTIONS IN CABLES.• ADJUST LEVEL CONTROLS AS PER INSTRUCTIONS.• USE CORRECT CABLES (AS SHOWN ON BACK OF UNIT).