Gemini P-700 manual Symptom Cause Solution Unit does not Produce SOUND. Power, LED does not Light

	SYMPTOM		CAUSE	SOLUTION
UNIT DOES NOT PRODUCE SOUND. POWER			• POWER SWITCH NOT IN ON POSITION.	• MOVE POWER SWITCH TO ON POSITION.
LED DOES NOT LIGHT.			• POWERCABLENOTCONNECTEDTOAMPLIFIER	• CONNECT POWER CABLE TO AC SUPPLY.
			OR TO OUTLET.	• CHECK CONDITION OF OUTLET.
			• AC OUTLET NOT ACTIVE.	• REPLACE AMPLIFIER MAIN POWER FUSE ON REAR
			• MAIN AMPLIFIER FUSE DEFECTIVE.	PANEL WITH CORRECT TYPE AND RATING.
POWER LED LIGHTS, BUT NO SOUND IS			• NO INPUT SOURCE SIGNAL.	• CHECK FOR PROPER FUNCTION OF INPUT
PRODUCED BY AMPLIFIER.			• INPUT SOURCE NOT CONNECTED.	SOURCE DEVICE.
				• CHECK INPUT CABLES AND CONNECTIONS.
			• INPUT CONNECTING CABLE DEFECTIVE.
				REPLACE QUESTIONABLE CABLES WITH KNOWN
			• SPEAKER(S) NOT CONNECTED.	GOOD CABLES.
			• SPEAKER CABLE DEFECTIVE.	• CHECK SPEAKER CABLES AND CONNECTIONS.
				REPLACE QUESTIONABLE CABLES WITH KNOWN
			• SPEAKER SYSTEM(S) INOPERATIVE.
				GOOD CABLES.
			• AMPLIFIER’S LEVEL CONTROLS ARE SET TO	• CHECK OPERATING CONDITION AND STATUS OF
			ZERO.	SPEAKER SYSTEM(S). BE SURE THE LEVEL
				CONTROLS ARE PROPERLY SET.
SOUND IS PRESENT BUT VOLUME IS TOO			• AMPLIFIER INPUT LEVEL CONTROLS ARE SET	• ADJUST LEVEL CONTROLS AS PER INSTRUCTIONS.
LOW EVEN THOUGH SOURCE DEVICE IS			TOO LOW.	• USE CORRECT CABLES (AS SHOWN ON BACK OF
SET TO A HIGH LEVEL.			• WRONG PIN CONNECTIONS IN CABLES.	UNIT).
VERY LITTLE OR NO OUTPUT FROM			• FREQUENCY SWITCH IS IN THE FULL RANGE	• MOVE THE FREQUENCY SWITCH TO THE 120 HZ
SUBWOOFER OR			MODEPOSITION.	OR THE 180 HZ POSITION.
NO BASS FROM FULL RANGE SPEAKERS
WHEN	OPERATING	WITHOUT

SUBWOOFERS.

LOUD 50/60 HZ OR 100/120 HZ 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/RACKMOUNTING.

•CHECK FOR PROPER AC LINE GROUND ON POWER AMP AND ALL INPUT DEVICES.

•CHECK INPUT CABLES FOR ALL SOURCE DEVICES AND SIGNAL PROCESSING AS WELL AS INPUT CABLES TO POWER AMPLIFIER. 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.	• CHECK CLIP INDICATORS ON INPUT SOURCE
	• INPUT LEVEL IS SET TOO HIGH.	DEVICES AND RESET LEVELS IF NECESSARY TO
		ELIMINATE DISTORTION.
		• ADJUST LEVEL CONTROLS AS PER INSTRUCTIONS.
PROTECT LED REMAINS LIT OR GOES ON	• UNIT IS OPERATING AT EXCESSIVELY HIGH	• CHECK THAT AMPLIFIER IS ADEQUATELY
AND OFF INTERMITTENTLY AFTER USING	TEMPERATURE.	VENTILATED ON THE FRONT AND REAR PANELS
		WHERE THE AIR VENTS AND FANS ARE LOCATED.
AMPLIFIER FOR A SHORT TIME.	• EXTREMELY LOW SPEAKER IMPEDANCE.
		IF OVERHEATED, LET THE AMPLIFIER COOL DOWN
	• SHORT IN SPEAKER CONNECTORS, SPEAKER	BEFORE APPLYING AN INPUT SIGNAL.
	CABLE OR SPEAKER SYSTEM.	• VERIFY SPEAKER SYSTEM IMPEDANCES. BE SURE
		THE TOTAL SPEAKER SYSTEM IMPEDANCE IS AT
		LEAST 4 OHM PER CHANNEL FOR CHANNELS A AND
		B, AND AT LEAST 2 OHM FOR THE SUBWOOFER
		CHANNEL. IF YOU ARE NOT SURE OF YOUR TOTAL
		SPEAKER IMPEDANCE LOAD, CONTACT YOUR
		DEALER FOR MORE INFORMATION.
		• CHECK CONDITION OF SPEAKER CABLES.
		• IF USING BARE WIRE CONNECTIONS ON THE
		OUTPUTS OF THE AMPLIFIER, BE SURE THAT NO
		STRANDS FROM ONE CONNECTOR ARE TOUCHING
		ANY OTHER CONNECTOR.
FUSE BLOWS INTERMITTENTLY.	• SPEAKER LOAD IMPEDANCE IS TOO LOW.	• CHECK FOR SHORTS ON THE OUTPUTS.

•TYPE OR RATING OF THE FUSE IS NOT CORRECT.

•CHECK YOUR SPEAKER IMPEDANCE (INFO FROM DEALER).

•CHECK THAT THE FUSE TYPE AND RATING IS CORRECT.

PROTECT LED(S) STAY ON WITH NO • FAILED AMPLIFIER.

SPEAKERS CONNECTED AND WITH THE AMPLIFIER COOLED DOWN.

•CONTACT THE GEMINI SERVICE DEPARTMENT OR YOUR AUTHORIZED DEALER TO SPEAK TO A QUALIFIED SERVICE TECHNICIAN. IN THE U.S.A. CALL 1-732-738-9003

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