Gemini-PMX1400-mix-sm维修电路原理图.pdf

(1)SERVICE MANUALPMX-1400Stereo Preamp MixerCONTENTS:Connections & Operations:.Page 2-5Specifications:.Page 5Parts Lists:.Page 5-6PCBs:.Page 7-9Schematics.Page 10-11Gemini 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(2)PMX-1400RadioFans.CN 收音机爱 好者资料库(3)47464644494545434341424240403939383837373636353534345033L7L6PH3L5L8RECBOOTHAMP+123123123GND LIFTRIGHT LEFTMAIN POWER+PH1L1L1PH1PH2PH3L3L2PH2L3L4L5+999912312312348(4)INTRODUCTION:Congratulations on your purchase of the Gemini PMX-1400 Mixer.This state-of-the-art unit is backed by a three year warranty, excludingcrossfader and channel slides. Prior to use, we suggest that youcarefully read all the instructions.FEATURES:4 Stereo ChannelsTalkoverState-of-the-Art Cue SectionDual 7 Band Graphic EqualizersBooth and Record outputsBalanced and Unbalanced Master Outputs3 Phono/Line Convertible, 5 Line, and 2 Mic InputsCAUTIONS:1. All operating instructions should be carefully read beforeusing this equipment.2. To reduce the risk of electrical shock, do not open the unit.THERE ARE NO USER REPLACEABLE PARTS INSIDE.Please refer servicing to a qualified service technician. In the USA: If you experience problems with this unit, please call 1 (732) 969-9000 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 sourcesuch as a radiator or stove.4. This unit should be cleaned only with a damp cloth. Avoidsolvents or other cleaning detergents.5. When moving this equipment, it should be placed in its originalcarton and packaging. This will reduce the risk of damageduring transit.6. DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE.7. DO NOT USE SPRAY CLEANER OR LUBRICANT ON CONTROLSOR SWITCHES.CONNECTIONS:1. Before plugging the power cord in, make sure that the VOLTAGESELECTOR (33) switch is set to the correct voltage.NOTE: THIS PRODUCT IS DOUBLE INSULATED AND IS NOT INTENDED TOBE GROUNDED.2. Make sure that the POWER (26) switch is in the OFF position.The POWER LED (27) display will be off.3. The PMX-1400 is supplied with four sets of output jacks: The MAINOUTPUT (34) jacks connect to the main amplifier. The BALANCEDMASTER OUTPUT (99) jacks connect the mixer to main amplifierusing standard cables with 1/4” connectors. We recommend usingbalanced cables if the distance to your amp is 10 feet or more. TheREC OUTPUT (36) jacks can be used to connect the mixer to therecord input of your recording unit, thus enabling you to record yourmix. The BOOTH OUTPUT (35) jacks allow the connectionof an additional amplifier.4. The MIC 1 input (located on the front panel) accepts an XLRconnector. The MIC 2 (48) input (on the rear panel) accepts1/4 connectors. All accept balanced and unbalanced microphones.5. On the rear panel are three stereo PHONO/LINE (40, 43, 46) inputsand five stereo LINE (37, 38, 39, 42, 45) inputs: PHONO/LINESWITCH (41) enables you to set the (40) input to Phono or Line.PHONO/LINE SWITCH (44) enables you to set the (43) input toPhono or Line. PHONO/LINE SWITCH (47) enables you to set the(46) input to Phono or Line. Attach phono ground line to theGROUND THUMB SCREW (49).7. Headphones may be plugged into the front panel mountedHEADPHONE (32) jack.8. The PMX-1400 comes with a front panel BNC LIGHT (25) jackfor use with a (not provided) gooseneck light.USING THE GROUND LIFT SWITCH:Depending on your system configuration, application of the groundwill sometimes create a quieter signal path. Lifting the groundoccasionally eliminates ground loops and “hum” to create a quietersignal.1. With the mixer ON, listen to the system in “idle” mode (no signalpresent) and with the ground “applied” and the GROUND LIFTSWITCH (50) in the LEFT position.2. Turn the power OFF before moving the GROUND LIFTSWITCH (50). “Lift” the ground by moving the GROUND LIFTSWITCH to the RIGHT, turn the power back ON and listen todetermine which position provides a signal devoid of backgroundnoise and hum. Keep the GROUND LIFT SWITCH in the “ground”position if the noise level remains the same in either position.CAUTION: DO NOT TERMINATE THE AC GROUND ON THE MIXER.CABLE. TERMINATION OF THE AC GROUND CAN BE HAZARDOUS!OPERATION:1. POWER: Once you have made all the equipment connections toyour mixer, press the POWER SWITCH (26). The power will turnon and the POWER LED (27) will glow RED.2. CHANNEL 1: Switch (9) allows you to select PHONO 1/LINE 1(46) or the LINE 2 (45) input. CHANNEL SLIDE (10) controlsthe input level of this channel.3. CHANNEL 2: Switch (11) allows you to select PHONO 2/LINE 3(43) or the LINE 4 (42) input. CHANNEL SLIDE (12) controlsthe input level of this channel.4. CHANNEL 3: Switch (13) allows you to select PHONO 3/LINE 5(40) or the LINE 6 (39) input. CHANNEL SLIDE (14) controlsthe input level of this channel.5. CHANNEL 4: Switch (15) allows you to select either the LINE 7(38) or LINE 8 (37) input. CHANNEL SLIDE (16) controlsthe input level of this channel.6. CROSSFADER: The CROSSFADER (18) allows the mixing of onesource into another. The PMX-1400 features an assignablecrossfader. The ASSIGN (17, 19) switches allow you to selectwhich channel will play through each side of the crossfader.7. ASSIGN (17) switch has five settings (OFF, 1, 2, 3 and 4) andallows you to direct Channel 1, 2, 3 or 4 through the LEFT sideof the crossfader. ASSIGN switch (19) also has five settings(OFF, 1, 2, 3 and 4) and allows you to direct Channel 1, 2, 3 or 4through the RIGHT side of the crossfader. Placing either ASSIGNswitch in the OFF position inactivates that side of the crossfader.The CROSSFADER in your unit is removable and, should the needarise, can be easily replaced. Replacement crossfaders areavailable in three models: the RG-45 PRO (RAIL GLIDE) Dual-Rail Crossfader; as well as RF-45, which has a 45mm travelfrom side-to-side; and the PSF-45, which features a special“curve” designed for scratch mixing. Your Gemini mixer is equippedwith an RG-45 PRO (RAIL GLIDE) 45MM DUAL-RAIL CROSSFADERfeaturing internal dual stainless steel rails that allow the slider to ridesmoothly and accurately from end-to-end.(5)The following instructions are provided for those whopurchase a crossfader replacement unit from an authorizedGemini dealer:8. EQUALIZER: This unit features dual 7 band GRAPHIC EQUALIZERS(8, 22) that allow you to adjust the sound to fit any room. Activatethe equalizer by pressing EQ BUTTON (28) (EQ LED is illuminated).By adjusting any of the 7 LEFT equalizer slide controls (8), you cancut or boost the tonal characteristics of the sound coming from theLEFT speaker by 12 dB. Adjusting any of the 7 RIGHT equalizerslide controls (22) allows you to cut or boost the tonalcharacteristics of the sound coming from the RIGHT speaker by 12dB. Deactivate the equalizer by pressing the EQ BUTTON (28) again(EQ LED is OFF).9. OUTPUT CONTROL: The level of the MAIN OUTPUT (34) iscontrolled by the MASTER (24) slide. Activating the MONO (23)button (MONO LED is illuminated) converts the overall output tomono. The BOOTH (29) control adjusts the level of the BOOTHOUTPUT (35).HINT: BOOTH OUTPUT IS USED BY SOME DJS TO RUNMONITOR SPEAKERS IN THE DJ BOOTH. IT IS ALSO USED ASA SECOND ZONE OR AMP OUTPUT.NOTE: REC OUTPUT HAS NO LEVEL CONTROL. LEVEL ISCONTROLLED WITH THE CHANNEL SLIDES OF THE SELECTEDCHANNEL(S). TONE IS CONTROLLED VIA THE EQUALIZERS.10.TALKOVER: The purpose of the talkover is to allow the programplaying to be muted so that the mic may be heard above the music.The MIC/TALKOVER SWITCH (7) controls MIC 1 and MIC 2 andhas three settings. When MIC/TALKOVER (7) is in the BOTTOM position, MIC 1, MIC 2 and TALKOVER are all OFF. When MIC/TALKOVER (7) is in the CENTER position, MIC 1 and MIC 2 are ON. MIC INDICATOR (6) glows/TALKOVER is OFF. When MIC/TALKOVER SWITCH (7) is in the TOP position, MIC 1, MIC 2 and TALKOVER are ON and the volume of all sources except MIC inputs is lowered by 16 dB.11.TREBLE (2) and BASS (3) controls allow you to adjust the toneof MIC 1 and MIC 2. MIC 1 LEVEL (5) controls the level of MIC 1while MIC 2 LEVEL (4) controls the level of MIC 2.12.CUE: By connecting a set of headphones to the HEADPHONE (32)jack, you can monitor any or all channels. Press CUE ASSIGN (20)buttons for Channels 1 through 4 and select the Channel(s) to bemonitored. The respective LED indicators will glow. Use the CUELEVEL (31) control to adjust the cue volume without changing theoverall mix. By moving the CUE PGM PAN (30) control to the LEFTyou will be able to monitor the assigned cue signal. Moving thecontrol to the RIGHT allows you to monitor PGM (program) output.13.DISPLAY: The DISPLAY (21) indicates the MASTER output of theleft and right levels.SPECIFICATIONS:INPUTS:Phono.3 mV, 47 KOhmLine.150 mV, 27 KOhmMIC 1 & MIC 2.1.5 mV, 2 K OhmBalancedBass. 12dBHigh. 12dBOUTPUTS:Amp/Booth.0 dB 1V, 400OhmMax.20V Peak-to-PeakRec.225 mV, 5 KOhmGENERAL:Frequency Response.20Hz - 20KHz +/- 2 dBDistortion.0.02%S/N Ratio.Better than 80 dBTalkover Attenuation.-16 dBHeadphone Impedance.16 OhmEcho.600m secPower Source.115/230V, 50/60Hz, 10WDimensions.19”w x 4”d x 9”h (483 x 94 x 221 mm)Weight.10.17 lbs. (4.6 Kg) Unscrew the FADER PLATE SCREWS (B). Do not touch the INSIDE SCREWS (C). Carefully lift the fader and unplug the CABLE (D). Plug the new fader into CABLE (D) and place it back in the mixer. Screw the fader to the mixer with the FADER PLATE SCREWS (B).DescriptionPart #Cabinet Parts and Packing124567891011121314151617181920212223242526272829303132Item #Parts Lists:FACEPPMX1400 021-999032-007021-767022-322022-305023-674002-531002-532002-703002-724002-726003-102003-110148-312003-994003-970003-373003-969003-986003-975003-564047-474049-206159-201159-167159-216159-171159-196146-710101-008PANEL CONTROLPANEL REARCOVER BOTTOMBRACKET VRHOLDER X-FADERPROTECTOR PLATE FOR 115/230V SWITCHSWING LEVELKNOB PUSH (SMALL)BUSHING FOR KNOB (SMALL)KNOB SLIDE (SMALL)KNOB SLIDE SILVER (BIG)KNOB SLIDE SILVER (SMALL)KNOB ROTARY (ASSIGN)KNOB ROTARY (B)KNOB INLAY (SILVER); LEVEL, BALANCE, CUE, ASSIGNEQ VR INLAYTRIM VRINLAY PLATEHOLDER LED 3f LED(17mm)HOLDER LEDHOLDER LEDWASHER XLRPCB SPACER SUPPORTPAD FOOTBNC DUST PROOF CLOTHDUST PROOF CLOTH (VR)DUST PROOF CLOTH (KNOB-SWING)DUST PROOF CLOTH (VR)FADER DUST PROOF CLOTHGND SCREWFLAT-HEAD MACHINE SCREW; FMS 2X4 (Y)262-044262-045262-046262-052262-053PRINTED CIRCUIT BOARD PDM24S-1:IN/OUTPRINTED CIRCUIT BOARD PDM24S-2:MAINPRINTED CIRCUIT BOARD PDM24S-4:FADER (73.513)PRINTED CIRCUIT BOARD PDM14-3:PHONEPRINTED CIRCUIT BOARD PDM14-5:PHONE JACK (2113)DescriptionPart #Printed Circuit BoardsItem #12345(6)Parts Lists - PCB1 Input/Output079-027079-003081-027092-078161-105161-106RECTIFIER DIODE 1N4002 (1N4003,1N4004)SILICON DIODE 1N4148SLIDE SWITCH 2P2C PH/LINEPHONE JACK 6.34P RCA JACK P=14mm6P RCA JACK P=14mmD3-8, D507, D508D1, D2SW1-3J1J2-5J6DesignatorsDescriptionPart #Electrical PartsItem #123456076-095076-104TRANSISTOR 2SC2878TRANSISTOR 2SA1048 (2SA1317)Q2-5Q1DesignatorsDescriptionPart #TransistorsItem #12074-145074-107074-114INTEGRATED CIRCUIT NJM2068LDINTEGRATED CIRCUIT NJM7812FAINTEGRATED CIRCUIT NJM7912FAIC1-4IC6IC7DesignatorsDescriptionPart #ICsItem #123082-019082-028083-069083-097072-035072-107072-113071-101071-159080-091080-079080-080080-078LEVER SW 4P2C P=18 PH/LN,LN/LNROTARY SWITCH 1-2-5 L=17 FAD ASSIGNPUSH SWITCH 2P2C L=12.5 CUE,MONOPUSH SWITCH 4P2C L=12.5SLIDE VR 45mm L=20 CH VOL MASTER 50KA2SLIDE VR 30mm L=15 EQ 20KW C.CRAILGLIDE VR 45mm X-FADER 100KB2ROTARY VR 16f L=20 TREBLE,BASS 10KB C.CROTARY VR 16f L=20 MIC LEVEL 10KALIGHT EMITTING DIODE (RED)LIGHT EMITTING DIODE (GREEN)LIGHT EMITTING DIODE (YELLOW)LIGHT EMITTING DIODE (RED)SW4-7SW9-10SW11-15SW8VR1-4VR7-13X-FADERVR14-15VR5-6Red 3.15Green 2.5x6.5Yellow 2.5x6.5Red 2.5x6.5DesignatorsDescriptionPart #Electrical PartsItem #12345678910111213074-104074-145074-115074-022INTEGRATED CIRCUITNJM4558LD(M5218AL,BA4558N)INTEGRATED CIRCUIT NJM2068LDINTEGRATED CIRCUIT M5229PINTEGRATED CIRCUIT LB1403NIC11IC8-10IC12IC13-16DesignatorsDescriptionPart #ICsItem #1234074-104074-113074-145074-115INTEGRATED CIRCUIT NJM4558LD(M5218AL,BA4558N)INTEGRATED CIRCUIT NJM4556LINTEGRATED CIRCUIT NJM2068LDINTEGRATED CIRCUIT M5229PIC19, IC20IC21IC17IC18DesignatorsDescriptionPart #ICsItem #1234080-091LIGHT EMITTING DIODE (RED) 3.15fD35-37DesignatorsDescriptionPart #DiodesItem #1083-069083-097072-035072-107072-092071-084060-702PUSH SWITCH 2P2C L=12.5 CUE,MONOPUSH SWITCH 4P2C L=12.5 EQSLIDE VR 45mm L=20 CH VOL MASTER 50KA2SLIDE VR 30mm L=15 EQ 20KW C.CSLIDE VR 45mm L=20 CUE PGM 20KB2ROTARY VR 16f L=20 CUE LEVEL 50KA2JUMP WIRE TYPE 0.5f P=5mm T/52mmSW16SW17VR24-25VR17-23VR26VR16J10DesignatorsDescriptionPart #Electrical PartsItem #1234567Parts Lists - PCB2 MainParts Lists - PCB3 PhonoPCB1 - Input/OutputPage 7PCB2 - Main Page 8PCB3 - Phono Page 9IC1A2068LDIC1B2068LDR747R11K 1%R31K 1%R430K 1%R547R930K 1%R230K 1%C1101C11101C7101C5101C647/16C310/16C222/16C410/16C847/16X1C1010/16C910/16C1222/16R101K 1%R81K 1%R630K 1%J1-12+12+12-1223148IC2A2068LDIC2B2068LDR22100KR1947R1247R208K2R23180R1847KR178K2R1347KR11180R15100KC24822C22101C26273C15101C16273C20822C2147/16C1347/16C1447/16C1847/16C2310/16C1710/16R211KR161KR261K8R251K8C28101C29101C2510/16C3010/16C1910/16C2710/16+12-12IC3A2068LDIC3B2068LDR38100KR3547R2847R368K2R39180R3447KR338K2R2947KR27180R31100KC41822C42101C44273C33101C34273C38822C3947/16C3147/16C3247/16C3547/16C40 10/16C3610/16R371KR321LR421K8R411K8C46101C47101C4310/16C4810/16C3710/16C4510/16+12-12IC4A2068LDIC4B2068LDR53100KR5147R4447R528K2R55180R5047KR498K2R4547KR43180R47100KC60822C58101C62273C51101C53273C56822C5747/16C4947/16C5047/16C5447/16C59 10/16C5210/16R541KR481KR581K8R571K8C64101C65101C6110/16C6610/16C5510/16C6310/16R241K8R141K8R301K8R401K8R561K8R461K8X2X3X4X5X6R601K8R591K8C69101C68101C7010/16C6710/16R621K8R611K8C72101C73101C7410/16C7110/16R78180R8147KR79330R775K1R84180R80330R835K1C8222/16C8122/16R8247KQ42SC2878Q52SC2878R70180R7247KR71330R695K1R76180R73330R755K1C8022/16C7922/16R7447KQ22SC2878Q32SC2878R6547KR6747KR638K2R688K2C7610/16C7710/16D31N4002D51N4002D61N4002D41N4002C89470/25C90470/25C87103C88103C844,7/16C854,7/16-12-12+12Vin1GND2+12V3IC67812Vin2GND1-12V3IC77912Q12SA1317R66560KD21N4148D11N4148C75220/16C784,7/16+12SW1ASW1BSW2ASW2BSW3ASW3BJ2AJ2BJ3AJ3BJ4AJ4BJ5AJ5BJ6AJ6BJ6CR641K12X12D81N4002D71N4002C86470/16X7X?D5071N4002D5081N400212345X111234X8R852M2-12MIC-2PH1; L1PH1/L1L2PH-2; L3L4PH-2/L3PH-3/L5PH-3; L5L6L7L8OUT REC.OUT BOOTHOUT AMP.+12123X14X15111210SW4D231SW4A564SW4B897SW4CR8547KR1014K7R8647KR8747KD9LED+12VR1A50KAVR1B50KAR8847KVR510KAR11010KR13427KR13522R1391K3R13622R1401K3R1091K8R1411KR11110KIC8A2068LDIC8B2068LDC9247C95224C97223C96224C98223C99221C10010/16C11447/16C11547/16C10147/16-12+12R11210KR11310KR14247KR14347KR14447KR14547KR14647KR14747KR14847KR14947K-VCC20GND19+VCC18OUT17N INP16P INP15NF714IN713NF612IN611NF12IN11IN23NF24IN35NF36IN47NF48IN59NF510IC12M5229PR15010R15110R1553K3R1563K3C125471C127821C128272C129682C130123C131124C126124C139563