Gemini-PS676i-mix-sm维修电路原理图.pdf

Page 1SERVICE MANUALPS-626i/PS-676iStereo Preamp MixersCONTENTS:Connections & Operations:.Page 2-4Specifications:.Page 5Parts Lists:.Page 6-8PCBs:.Page 7-9Schematics.Page 10Gemini Sound Products Corp.120 Clover Place P.O. Box 6928Edison, NJ 08818-6928732-738-9003 (Phone) 732-738-9006 (Fax)RadioFans.CN 收音机爱 好者资料库Page 2PS-626i32726678967896789121617172819101112212121205131415224252324RadioFans.CN 收音机爱 好者资料库Page 3PS-676i327266789678967891216171728191011122051314152242523242121212144454647514849505252Page 44342Page 5INTRODUCTION:Congratulations on purchasing a GEMINI Platinum Series modelPS-626i or PS-626i Mixer. This state-of-the-art mixer is backed bya three year warranty, excluding crossfader and channel slides.Prior to use, we suggest that you carefully read all the instructions.FEATURES: Cut Feature for Low, Mid and High of each channel 3 Stereo channels (3 Phono, 3 Line and 1 Mic) 1/4 DJ Mic jack Low, Mid, High and Gain controls on each channel Beat indicators Master, Booth and Record outputs Dual mode display (Left & Right output or Channel 2 and Channel 3) Push button cueing with Cue/Program pan control Digital sampler (PS-676i only)CAUTIONS:1. All operating instructions should be read before using this equipment.2. To reduce the risk of electrical shock, do not open the unit. There areNO USER REPLACEABLE PARTS INSIDE. Please refer servicing to aqualified GEMINI Sound Products service technician.In the USA: if you experience problems with this unit, pleasecall 1 (732) 738-9003 for GEMINI Customer Service.Do not attempt to return this equipment to your dealer.3. Do not expose this unit to direct sunlight or to a heat source such asa radiator or stove.4. This unit should be cleaned only with a damp cloth. Avoid solventsor other cleaning detergents.5. When moving this equipment, it should be placed in its original cartonand packaging. This will reduce the risk of damage during transit.6. DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE.7. DO NOT USE ANY SPRAY CLEANER OR LUBRICANT ON ANYCONTROLS OR SWITCHES.CONNECTIONS:1. Before plugging in the power cord, make sure that the VOLTAGESELECTOR (30) switch is set to the correct voltage.NOTE: THIS PRODUCT IS DOUBLE INSULATED AND IS NOTINTENDED TO BE GROUNDED.2. Make sure that the POWER (1) switch is in the off position. ThePOWER LED (2) will be off.3. The PS-626i and PS-676i are supplied with four (4) sets of outputjacks. The 1/4 BALANCED OUTPUT (29) jacks are used to connect toyour main amplifier using standard balanced cables. We recommendusing balanced amp outputs if the cables to your amplifier are 25 feetor more. The MAIN OUTPUT (38) (RCA type) jacks are unbalanced andused to connect to your main amplifier. The REC OUTPUT (40) (RCA type) jacks can be used to connectthe mixer to the record input of your recorder enabling you to recordyour mix. The BOOTH OUTPUT (39) (RCA type) jacks allow you to hook upan additional amplifier.4. On the rear panel are 2 stereo PHONO (32, 34) inputs, 2 stereo LINE(31, 33) inputs and 1 stereo PHONO/LINE (36) input. The PHONO/LINE (35) switch enables you to set the input to Phono/ Line (36).The phono inputs will accept only turntables with a magneticcartridge. A GROUND (37) screw to ground your turntables islocated on the rear panel. The stereo line inputs will accept any linelevel input such as a CD player, a cassette player, etc.6. Headphones can be plugged into the front panel mountedHEADPHONE (4) jack.THE GROUND LIFT SWITCH:Depending on your system configuration, applying the groundsometimes creates a quieter signal path. Sometimes “lifting” theground eliminates loops and hum to create a quieter signal path.1. Listen to the system with the unit ON, without music, and with theground “applied”. GROUND LIFT SWITCH (41) should be to the left.2. Turn power OFF before moving the GROUND LIFT SWITCH (41).3. Now, “lift” the ground by moving the GROUND LIFT SWITCH (41) tothe right. Turn the power back ON and listen to determine whichposition provides a signal free of background noise and hum.NOTE: KEEP GROUND LIFT IN THE GROUND “APPLIED” ORLEFT POSITION IF NOISE LEVEL REMAINS THE SAME INEITHER POSITION.CAUTION: DO NOT TERMINATE THE AC GROUNDON THE POWER CABLE. TERMINATION OF THE ACGROUND CAN BE HAZARDOUS.OPERATION:1. POWER ON: Once you have made all the equipment connections toyour mixer, press the POWER SWITCH (1). The power will turn onand the POWER LED (2) will glow RED.2. CHANNEL 1: The GAIN (6), HIGH (7), MID (8), and LOW (9).Controls allows you to fully adjust the selected source. Switch (10)allows you to select either the mic or the PHONO/LINE (36) input. TheCHANNEL (13) slide controls the output level of this channel.3. MAIN CHANNEL SECTION: To assign an input source to a channel,first set the PHONO/LINE (11,12) switches to their appropriatepositions. To make the proper adjustments to your music, set theGAIN (6), HIGH (7), MID (8) and LOW (9) controls and position theCHANNEL (14,15) slide.PLEASE NOTE: THERE IS LOW, MID AND HIGHEQUALIZATION FOR EACH CHANNEL WITH ANEXTREMELY WIDE RANGE OF ADJUSTMENT.SUGGESTION: YOU CAN USE THE CUT FEATURES ON EACHCHANNEL TO REMOVE LOW, MID AND/OR HIGH RANGETO CREATE SPECIAL EFFECTS.The CROSSFADER in your unit is removable and, should the needarise, can easily be replaced by following these instructions.Note: GEMINI replacement Crossfaders are available in threevarieties: the RG-45 PRO (RAIL GLIDETM) Dual-Rail Crossfader; theRF-45, which has a 45mm travel from side-to-side; and the PSF-45,which features a special “curve” designed for scratch mixing.1. Unscrew the outside FADER PLATE SCREWS (B). Do not touch INSIDE SCREWS (C).2. Carefully remove old Crossfader and unplug CABLE (D).3. Plug new Crossfader into CABLE (D) and place back into mixer.4. Screw Crossfader to mixer with FADER PLATE SCREWS (B).Page 6Your GEMINI mixer comes with an RG-45 PRO (RAIL GLIDE)DUAL-RAIL CROSSFADER. Rail Glide Crossfaders have internaldual stainless steel rails that allow the slider to ride smoothly andaccurately from end to end.4. CROSSFADER SECTION: The CROSSFADER (25) allows the mixing ofone source into another. The left side of the CROSSFADER (25) ischannel 2 and the right side is channel 3.5. BEAT INDICATORS: Each side of the CROSSFADER (25) has its ownBEAT INDICATOR (23, 24). They flash at the low frequency peaklevel allowing you to match the beats visually. BEAT INDICATOR (23)will reflect the beat of CH2 and BEAT INDICATOR (24) will do thesame for CH3.6. OUTPUT CONTROL SECTION: The level of the AMP OUT (38) iscontrolled by the MASTER (18) control. The BALANCE (17) controlwill allow the Amp Out signal to be balanced between the left andright speakers. The BOOTH (16) control adjusts the level of theBOOTH OUTPUT (39).HINT: BOOTH OUTPUT (39) IS USED BY SOME DJS TO RUNMONITOR SPEAKERS IN THE DJ BOOTH. YOU CAN ALSOUSE IT AS A SECOND ZONE OR AMP OUTPUT.NOTE: THE RECORD OUT (40) HAS NO LEVEL CONTROL.THE LEVEL IS SET BY THE CHANNEL SLIDES AND THEGAIN CONTROLS OF THE SELECTED CHANNEL. TONALQUALITIES ARE SET BY THE LOW, MID AND HIGHCONTROLS OF THAT SAME CHANNEL.7. TALKOVER SECTION: The purpose of the TALKOVER SECTION is toallow the program playing to be muted so that the mic can be heardabove the music. When the TALKOVER (19) button is pushed, theTALKOVER INDICATOR (28) will glow and the volume of all sourcesexcept the Mic or whatever is connected to the PHONO/LINE (36)input are reduced by 16 dB.8. CUE SECTION: By connecting a set of headphones to theHEADPHONE (4) jack, you can monitor any or all of the channels.Select the correct CUE (21) button or buttons and their respectiveCUE LED (5) indicators will glow. Use the CUE LEVEL (20) control toadjust the headphone volume without effecting the overall mix. Bysliding the CUE PGM PAN (22) control to the left you will be able tomonitor the assigned cue signal. Sliding to the right will monitor thePGM (program) output.9. DISPLAY: The peak hold, dual function DISPLAY (26) indicates eitherthe MASTER (38) output left and right levels or the channel 2 andchannel 3 levels. You can choose the option you want by pressingthe DISPLAY (27) button.NOTE: WHEN THE DISPLAY (27) IS IN THE CHANNEL 2/CHANNEL 3 DISPLAY MODE, BY ADJUSTING THEINDIVIDUAL CHANNEL GAIN AND TONE CONTROLS, YOUCAN INCREASE OR DECREASE THE SIGNAL TO MATCHTHE OTHER CHANNELS SIGNAL. THE CHANNEL SLIDESAND CROSSFADER HAVE NO EFFECT ON THE DISPLAYREADINGS.10. The CROSSFADER CURVE SWITCH (42) allows you to adjust thekind of curve the crossfader has. Move switch to the “sharp”position to make the curve steep and cutting (perfect for scratching ).Move switch to the “gradual” position to make the curve gradual andgentle. The CROSSFADER REVERSE SWITCH (43) allows you toreverse the crossfader so that CHANNEL 3 is controlled by the leftside of the crossfader and CHANNEL 2 is controlled by the right sideof the crossfader.NOTE: WHEN THE CROSSFADER REVERSE SWITCH (43) ISACTIVATED, ONLY THE CROSSFADER REVERSES. THECHANNEL SLIDES, GAIN, AND TONAL CONTROLS DO NOTREVERSE.SAMPLER OPERATION (PS-676i only):The PS-676i Sampler uses Dynamic RAM Memory and a 12 bitmicroprocessor controller. The full bandwidth results in true soundreproduction.RECORD SAMPLE:1. Put the MODE SELECTOR (45) switch into the WRITE position.2. Select the source you want to sample from by pressing theappropriate ASSIGN BUTTON(51).3. The PS-676i is equipped with a SAMPLER REC/PLAY LEVEL (50)control.When the MODE SELECTOR (45) is in the WRITE mode, thiscontrol acts as a record level control. If the OVERLOAD INDICATOR(49) is blinking, it means that the input signal you are going to sampleis too strong and will cause the sample to be distorted. Lower thesample signal intensity by tuming the SAMPLER REC/PLAY LEVEL(50) control counterclockwise.4. If the OVERLOAD INDICATOR (49 ) is off, turn the SAMPLER REC/PLAY LEVEL (50) control clockwise until the OVERLOADINDICATOR (49) begins to blink and then turn the SAMPLER REC/PLAY LEVEL (50) counter clockwise until the OVERLOADINDICATOR (49) just goes off.5. Tapping the START/STOP (48) button begins the sampling process(the SAMPLER INDICATOR (47) will illuminate RED). Tapping theSTART/STOP (48) button a second time ends the sample (theSAMPLER INDICATOR (47) will turn off). If you do not tap theSTART/STOP (48) button a second time, the sampling process willstop automatically after 12 seconds.SAMPLE PLAYBACK:1. Put the MODE SELECTOR (45) switch into the SINGLE or REPEATposition.2. When the MODE SELECTOR (45) is in the SINGLE or REPEAT mode,the SAMPLER REC/PLAY LEVEL (50) control acts as a SamplerLevel Control.3. Tapping the START/STOP (48) button with the MODE SELECTOR (45)in the SINGLE position will cause the sampler to playback one time(the SAMPLER INDICATOR (47) will illuminate GREEN). Every pushof the START/STOP (48) button will restart the sample from thebeginning. Rapid pressing of the START/STOP (48) button will causea stuttering effect. Once the sample has started playback and theSTART/STOP (48) button is not pushed a second time, the samplewill play to the end and then stop (the SAMPLER INDICATOR (47)will illuminate turn off).4. Tapping the START/STOP (48) button with the MODE SELECTOR(45) in the REPEAT position will cause the sample to continuously playover and over (the SAMPLER INDICATOR (47) will illuminateGREEN). The START/STOP (48) button will act as an on/off switch.The first push will start the sample, the second push will stop it.ROBO PLAY:1. With the ROBO PLAY (42) button in the OFF position (the ROBOPLAY INDICATOR (43) will be OFF ) and the MODE SELECTOR (45)switch in either the SINGLE or REPEAT mode, pressing the START/STOP (48) will cause the sample to play along with the signal goingthrough the mixer.2. When the ROBO PLAY (42) button is in the ON position (the ROBOPLAY INDICATOR (43) illuminates RED), starting the sampler mutesthe signal going through the mixer. When the sample ends, the signalautomatically turns back on.PITCH CONTROL:The PS-676i comes equipped with a sampler PITCH (44) control. Toadjust the tone of a sample, turn the knob to the left to slow the pitchand to the right to speed up the pitch after a sample has beenrecorded. The pitch can also be set while recording a sample.PAN CONTROL:SAMPLER PAN (46): This lets you hear the sample in either stereomode or by turning SAMPLER PAN (46) to the left or right will changethe range from the left channel to the right channel of sound, for thesample.Page 7SPECIFICATIONS FOR PS-676i:INPUTS:DJ Mic.1.5mV 2 k unbalancedPhono.3mV 47 kLine.150 mV 27 kOUTPUTS:Amp/Booth.0 dB 775mV 400 Max.24V Peak-to-PeakRec.225mV 5 kSAMPLER:Sampler System.12 Bit SamplingSample Length .12 SecondsTotal Memory Capacity .1 MbitGENERAL:Low .+ 12dB/- 32 dBMid .+ 12dB/- 32 dBHigh.+ 12dB/- 32 dBGain (Mic).0 to -40dBGain (Chnls 1-3).0 to -20dBFrequency Response.20Hz - 20kHz +/- 2dBDistortion.less than 0.02%S/N Ratio.better than 80dBTalkover Attenuation.16dBPower Source.115/230V 50/60Hz 15WDimensions.254mmW x 305mmD x 112mmH 10”W x 12”D x 4 7/16”HWeight.6.5 lbs(3 Kg)SPECIFICATIONS for PS-626i:INPUTS:DJ Mic.1.5mV 2 k unbalancedPhono 1 kHz.2 mV 47 kLine.100 mV 27 kOUTPUTS:Amp/Booth.0 dB 775mV 400 Max.24V Peak-to-PeakRec.225mV 5 kGENERAL:Bass .+ 12dB/- 32 dBMid .+ 12dB/- 32 dBTreble .+ 12dB/- 32 dBGain (Mic).0 to -40dBGain (Chnls 1-3).0 to -20dBFrequency Response.20Hz - 20kHz +/- 2dBDistortion.less than 0.02%S/N Ratio.better than 80dBTalkover Attenuation.16dBPower Source.115/230V 50/60Hz 20WDimensions.254mmW x 305mmD x 112mmH 10”W x 12”D x 4 7/16”HWeight.6.5 lbs(3 Kg)Worldwide Headquarters 120 Clover Place, Edison, NJ 08837 USATel: (732) 738-9003 Fax: (732) 738-9006France G.S.L. France 11, Avenue Leon Harmel, Z.I. Antony, 92160 Antony, FranceTel: + 33 (0) 1 55 59 04 70 Fax: + 33 (0) 1 55 59 04 80Germany Gemini Sound Products GmbH Ottostrasse 6, 85757 Karlsfeld, GermanyTel: 08131 - 39171-0 Fax: 08131 - 39171-9UK Gemini Sound Products Unit C4 Hazleton Industrial Estate, Waterlooville, UK P08 9JUTel: 087 087 00880 Fax: 087 087 00990Spain Gemini Sound Products S.A. Rosello, 516, Barcelona, Spain, 08026Tel: 349-3435-0814 Fax: 3493-347-6961 Gemini Sound Products Corp. 2003 All Rights Reserved.Parts of the design of this product may be protected by worldwide patents.Information in this manual is subject to change without notice and doesnot represent a commitment on the part of the vendor. Gemini SoundProducts Corp. shall not be liable for any loss or damage whatsoeverarising from the use of information or any error contained in this manual.No part of this manual may be reproduced, stored in a retrieval system ortransmitted, in any form or by any means, electronic, electrical, mechanical,optical, chemical, including photocopying and recording, for any purposewithout the express written permission of Gemini Sound Products Corp.It is recommended that all maintenance and service on this product isperformed by Gemini Sound Products Corp. or its authorized agents.Gemini Sound Products Corp. will not accept liability f