Gemini-PDM16-mix-sm维修电路原理图.pdf

Page 1SERVICE MANUALPDM-16Stereo Preamp MixerCONTENTS:Connections & Operations:.Page 2-5Specifications:.Page 5Parts Lists:.Page 5-7PCBs:.Page 8-10Schematics:.Page 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Page 212345671720108211819242534352931920121123201615222014133026282525252525273332RadioFans.CN 收音机爱 好者资料库Page 35049495147524848464644454543434242414140403939383837375336Page 4Connections1. Before plugging in the power cord, make sure that the VOLTAGESELECTOR (36) switch is set to the correct voltage.NOTENOTENOTENOTENOTE: This product is double insulated and not intendedto be grounded.2. Make sure that the POWER (29) switch is in the off position. ThePOWER LED (30) will be off.3. The PDM-16 is supplied with 3 sets of amp output jacks. The MAINOUTPUT (37) jacks are unbalanced and used to connect to yourmain amplifier. The REC OUTPUT (39) jacks can be used to connectthe mixer to the record input of your recorder enabling you to recordyour mix. The BOOTH OUTPUT (38) jacks allow you to hook up anadditional amplifier.4. The MIC 1 (1) input (found on the front panel) accepts a 1/4 or XLRconnector. The MIC 2 (51) input (found on the rear panel) accepts1/4 connectors. All accept balanced and unbalanced microphones.5. On the rear panel are 3 stereo PHONO/LINE (43, 46, 49) inputs and5 stereo LINE (40, 41, 42, 45, 48) inputs. The PHONO/LINE SWITCH(44) enables you to set the (43) input to Phono or Line. The PHONO/LINE SWITCH (47) enables you to set the (46) input to Phono orLine. The PHONO/LINE SWITCH (50) enables you to set the (49)input to Phono or Line. The phono inputs will accept only turntableswith a magnetic cartridge. A GROUND SCREW (52) for you toground your turntables is located on the rear panel. The stereo lineinputs will accept any line level input such as a CD player, acassette player, etc.6. Headphones can be plugged into the front panel mountedHEADPHONE (35) jack.7. The PDM-16 comes with a front panel BNC LIGHT (28) jack. Thisjack is for use with a gooseneck light like the Gemini GNL-700.Using the Ground Lift SwitchDepending on your system configuration, sometimes applying theground will create a quieter signal path. Sometimes lifting the groundcan eliminate ground loops and hum to create a quieter signal path.1. With the mixer on, listen to the system in idle mode (no signalpresent) with the ground applied (the GROUND LIFT SWITCH (53)in the left position).2. Then turn the power off before moving the GROUND LIFTSWITCH (53). Lift the ground by moving the GROUND LIFT SWITCHto the right, turn the power back on and listen to determine whichposition will provide a signal devoid of background noise and hum.Keep the GROUND LIFT SWITCH in the ground position if the noiselevel remains the same in either position.CAUTION: DO NOT TERMINATE THE AC GROUND ON THE POWERMIXER IN ANY WAY. TERMINATION OF THE AC GROUND CAN BEHAZARDOUS.Operation1. POWER ON: Once you have made all the equipment connections toyour mixer, press the POWER SWITCH (29). The power will turn onand the POWER LED (30) will glow RED.2. CHANNEL 1: Switch # (9) allows you to select the PHONO 1/LINE 1(49) or the LINE 2 (48) input. The CHANNEL SLIDE (10) controls theinput level of this channel.3. CHANNEL 2: Switch # (11) allows you to select the PHONO 2/LINE 3(46) or the LINE 4 (45) input. The CHANNEL SLIDE (12) controls theinput level of this channel.4. CHANNEL 3: Switch # (13) allows you to select the PHONO 3/LINE5 (43) or the LINE 6 (42) input. The CHANNEL SLIDE (14) controlsthe input level of this channel.5. CHANNEL 4: Switch # (15) allows you to select the LINE 7 (41) orthe LINE 8 (40) input. The CHANNEL SLIDE (16) controls the inputlevel of this channel.6. CROSSFADER SECTION: The CROSSFADER (18) allows the mixingof one source into another. The PDM-16 features an assignablecrossfader. The ASSIGN (17, 19) switches allow you to selectwhich channel will play through each side of the crossfader. TheASSIGN (17) switch has 5 settings (OFF, 1, 2, 3 or 4) and allowsyou to select channel 1, 2, 3 or 4 to play through the left side of thecrossfader. The ASSIGN (19) switch has 5 settings (OFF, 1, 2, 3 or4) and allows you to select channel 1, 2, 3 or 4 to play through theright side of the crossfader. With the ASSIGN switch in the offposition, that side of the crossfader will be inactive. TheCROSSFADER (18) in your unit is removable and if the need arisescan be easily replaced. Crossfader units are available in threevarieties. Part # RF-45 (which is identical to the crossfader suppliedwith the mixer) has a 45 mm travel from side to side. Part # RF-30 isavailable with a 30 mm travel distance. Also available is the PSF-45with a special curve designed for scratch mixing. Just purchaseone of these crossfader units from your Gemini dealer and followthese instructions:1. Unscrew the outside FADER PLATE SCREWS (B). Do nottouch the INSIDE SCREWS (C).2. Carefully lift the fader and unplug the CABLE (D).3. Plug the new fader into the cable and place it back in themixer.4. Screw the fader to the mixer.7. EQUALIZER SECTION: This unit features dual 7 band GRAPHICEQUALIZERS (8, 22) to allow you to adjust the sound for any room.To activate the equalizer, press the EQ BUTTON (31) (the EQ LEDwill light). By adjusting any of the 7 left equalizer slide controls (8),you can cut or boost the tonal characteristics of the sound comingfrom the left speaker by 12 dB. By adjusting any of the 7 rightequalizer slide controls (22), you can cut or boost the tonalcharacteristics of the sound coming from the right speaker by 12dB. Deactivate the equalizer by pressing the EQ BUTTON (31) again(the EQ LED will turn off).8. OUTPUT CONTROL SECTION: The level of the MAIN OUTPUT (37) iscontrolled by the MASTER (24) slide. Activating the MONO (23)button (the mono LED will light) makes the overall output mono. TheBOOTH (32) control adjusts the level of the BOOTH OUTPUT (38).HINT: The BOOTH OUTPUT is used by some DJs to run monitorspeakers in their DJ Booth. You can also use it as a second ZONEor AMP output.NOTENOTENOTENOTENOTE: The REC OUTPUT (39) REC OUTPUT (39) REC OUTPUT (39) REC OUTPUT (39) REC OUTPUT (39) has no level control.The level is set by the channel slides of the selectedchannel. The tonal qualities can be controlled by theequalizers.9. TALKOVER SECTION: The purpose of the talkover section is to allowthe program playing to be muted so that the mic can be heard abovethe music. The MIC/TALKOVER SWITCH (7) controls MIC 1 and MIC2 and has three settings. When the MIC/TALKOVER SWITCH (7) isPage 5in the bottom position, MIC 1 and MIC 2 and talkover are off. Whenthe MIC/TALKOVER SWITCH (7) is in the center position MIC 1 andMIC 2 are on, the MIC INDICATOR (6) will glow, but talkover is off.When the MIC/TALKOVER SWITCH (7) is in the top position, MIC 1and MIC 2 and talkover will be on and the volume of all sourcesexcept the Mic inputs are lowered by 16 dB. The TREBLE (2) andBASS (3) controls allow you to fully adjust the tone of MIC 1 and MIC2. MIC 1 LEVEL (5) controls the level of MIC 1. The MIC 2 LEVEL(4) controls the level of MIC 2.10.CUE SECTION: By connecting a set of headphones to theHEADPHONE (35) jack, you can monitor any or all of the channels.Press the CUE ASSIGN (20) buttons for channels 1 - 4 to select thechannel or channels to be monitored and their respective LEDindicators will glow. Use the CUE LEVEL (34) control to adjust thecue volume without effecting the overall mix. By moving the CUEPGM PAN (33) control to the left you will be able to monitor theassigned cue signal. Moving the control to the right will monitor thePGM (program) output. Moving to the right will monitor the PGM(program) output.11. DISPLAY: The DISPLAY (21) indicates the MASTER output left andright levels.12.SOUND EFFECTS SECTION: Six different sound effects (UFO, TRONBLAST, SIREN, GAS, MACHINE GUN and EMERGENCY) may beadded to your mix by depressing the SOUND EFFECTS CONTROLBUTTONS (25). The volume of the effects can be adjusted using theEFFECTS LEVEL CONTROL (27). The pitch of the effects can beincreased or decreased using the EFFECTS SPEED CONTROL (26).SpecificationsINPUTS:DJ Mic.1.5mV 2Kohm balancedPhono.3mV 47KohmLine.150 mV 27KohmOUTPUTS:Amp/Booth.0 dB 1V 400ohm Max.20V Peak to PeakRec.225mV 5KohmMIC 1 & MIC 2:DJ Mic.1.5mV 2Kohm balancedBass. 12dBHigh. 12dBGENERAL:Frequency Response.20Hz - 20KHz +/- 2dBDistortion.0.02%S/N Ratio.better than 80dBTalkover Attenuation.-16dBHeadphone Impedance.16ohmPower Source.115/230V 50/60Hz 10WDimensions.19”w x 4”h x 9”dWeight.10.17 lbsDescriptionPart #Cabinet Parts and Packing124567891011121314151617181920212223242526272829303132333435363738394041424344Item #Parts Lists002-210034-001032-018021-763022-322022-305049-199023-674002-531002-532002-704002-715003-102003-110148-236148-239003-994003-970003-373003-969003-986003-975003-564047-474049-206159-201156-216159-171159-196146-710102-007101-008102-025107-015110-172A111-043A111-044A111-046A111-049A111-050111-051A111-053A131-081PANEL CONTROLPANEL REARCOVER BOTTOMBRACKET VRHOLDER X-FADERPROTECTOR PLATE FOR 115/230V SWITCHSOUND CONTROL KEYSWING LEVELKNOB PUSH (SMALL)BUSHING FOR KNOB (SMALL)KNOB SLIDE (BIG)KNOB SLIDEKNOB ROTARY (ASSIGN)KNOB ROTARY (B)KNOB INLAY (BLACK)KNOB INLAY (GRAY)EQ VR INLAYTRIM VRINLAY PLATEHOLDER LED 3f LED(17mm)HOLDER LEDHOLDER LEDWASHER XLRPCB SPACER SUPPORTPAD FOOTBNC DUST PROOF CLOTHDUST PROOF CLOTH (KNOB-SWING)DUST PROOF CLOTH (VR)FADER DUST PROOF CLOTHGND SCREWPAN-HEAD MACHINE SCREW; PMS 2X4(B)FLAT-HEAD MACHINE SCREW; FMS 2X4 (Y)PAN-HEAD MACHINE SCREW; PMS 2.6X4(B)BAND-HEAD MACHINE SCREW; BMS 3X2X4BAND-HEAD TAPPING SCREW/TWIN SCREW; BTS-2 3X8(AB) TWINFLAT-HEAD TAPPING SCREW; FTS-3 3X6(AB)BAND-HEAD TAPPING SCREW; BTS-3 3X10(AB)BAND-HEAD TAPPING SCREW; BTS-3 3X6(AB)FLAT-HEAD TAPPING SCREW; FTS-3 3X12(AB)FLAT-HEAD TAPPING SCREW; FTS-3 3X12(Y)BAND-HEAD TAPPING SCREW; BTS-3 3X5(AB)BAND-HEAD TAPPING SCREW/TW-E; BTS-3/TW-E 3X6(AB)NUT/WASHER 3mm262-044262-045262-047262-046262-048262-049PRINTED CIRCUIT BOARD PDM-24S-1: IN/OUTPRINTED CIRCUIT BOARD PDM-24S-2: MAINPRINTED CIRCUIT BOARD PDM-18-3: EFFECTPRINTED CIRCUIT BOARD PDM-24S-4: FADERPRINTED CIRCUIT BOARD PDM-18-5: PHONESPRINTED CIRCUIT BOARD PDM-18-6DescriptionPart #Printed Circuit BoardsItem #123456Page 6Parts 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 #123Parts Lists - PCB2 Main082-019082-028083-069083-097072-035072-107072-081071-101071-159080-091080-079080-080080-078LEVER SW 4P2C P=18 PH/LN,LN/LNROTARY SWITCH 1-2-5 L=17 FAD ASSIGNPUSH SWITCH 2P2C L=12.5 CUE,MONOSWITCH 4P2C L=12.5SLIDE VR 45mm L=20 CH VOL MASTER 50KA2SLIDE VR 30mm L=15 EQ 20KW C.CSLIDE VR 45mm L=20 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)SW4-7SW9-10SW12-15SW8VR1-4VR7-13A1VR14-15VR5-6Red 3.15Green 2.5x6.5Yellow 2.5x6.5Red 2.5x6.5DesignatorsDescriptionPart #Electrical PartsItem #12345678910111213074-104074-145074-115074-022INTEGRATED CIRCUIT NJM4558LD(M5218AL,BA4558N)INTEGRATED CIRCUIT NJM2068LDINTEGRATED CIRCUIT M5229PINTEGRATED CIRCUIT LB1403NIC11IC8-10IC12IC13-16DesignatorsDescriptionPart #ICsItem #1234Page 7Parts Lists - PCB3 Phono080-091ZENER DIODE 3.6V 1/2WLIGHT EMITTING DIODE (RED) 3.15fD37D10, D36, D40DesignatorsDescriptionPart #DiodesItem #12092-078083-069083-097072-035072-107071-084071-066071-161071-178071-176PHONE JACK 6.3fPUSH 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.CROTARY VR 16f L=20 CUE LEVEL 50KA2ROTARY VR 16f L=20 VOLUME 50KAROTARY VR 16f L=20 BOOTH 10KA2ROTARY VR 16f L=20 CUE PGM 20KW2ROTARY VR 16f L=20 SPEED 250KB2CCJ10SW20SW22VR30VR20-26VR17VR16VR31VR32VR27DesignatorsDescriptionPart #Electrical PartsItem #12345678910074-104074-113074-145074-115074-141074-140INTEGRATED CIRCUIT NJM4558LD(M5218AL,BA4558N)INTEGRATED CIRCUIT NJM4556LINTEGRATED CIRCUIT NJM2068LDINTEGRATED CIRCUIT M5229PINTEGRATED CIRCUIT VM8080INTEGRATED CIRCUIT GEMNI-01IC18-20IC26IC25IC17IC21IC22DesignatorsDescriptionPart #ICsItem #123456+12-12X30+12-12+12-12MLRLRRBLBRMLMRX31X29X32+12R24612KR22510R22610IC25A2068LDC219101C15710/16C17322/16C17422/16+12C158100/16C159100/16IC25B2068LDC220101R24712KC16010/16R2524K7R2534K7R25410KR25510KR21210KR21310KR2567K5R2577K5R2014K7D10LED+12-12R1931KR1941KR2034K7D36LED-12VR30A50KAVR30B50KAIC19A4558IC19B4558R185100KR186100KR2586K8R2181K3R2596K8R2191K3C16110/16C16210/16C17522/16C17622/16C18347C18447R22710R22810+12-12VR31A10KAVR31B10KAIC20A4558IC20B4558R18747KR18947KR2044K7R1951KR2054K7R1961KC16310/16C16410/16C17722/16C17822/16C18547C186 47R22910R23010+12-12SW20ASW02SW20BSW02SW22ASW04SW22BSW04SW22CSW04RLRRMRBRBLMRMRMLMLRLRRD40LEDR1994K7+12R20736KR20810KR20910KR21036KR121100KR130100KC189332C208222C190153C21047R131100KR132100KR240180KR179100KR21118KIC18A4558IC18B4558C2021/16C215100/16C9147/16BIAS1IN2PREO3OUT4SEL5OSC16OSC27OSC38OSC49VSS10A611A712VDD24CASB23A822DATA21WRB20RASB19A018A117A216A315A414A513IC23HT8955C182681C216123C209472R180100KR181100KR10247R10747C211331C15510/16C12047/16+12-12VR1810KBVR1910KBVR29500KBR244180KR245330/0.5R22410R2358K2A05A17A26A312A411A510A613A79A81RAS4CAS15WE3Q14D2VCC8GND16IC2441256D385VC217104C15610/16+12R2024K7D35LED-12R184100KSW21ASW02SW21BSW02R217100KX271312111098762KEY1KEY2KEY3KEY4KEY5KEY6KEY7KEY8VDD31718161415451VSSNC1NC2NC3LHOSC1OSC2OUTOUTIC21VM80802345678910112131415161718192011OSC1OSC2TG1TG2TG3TG4TG5TG6TG7TG8VSSVDDAUDIND1IND2IC22HT-82200R1901KR1911KR23647KR23710KR238300KR23947KR1923K3VR27A250KBVR27B250KBC2001/16C2011/16D373.6VC206153C2074.7/16+5R1971K-VCC20GND19+VCC18OUT17N INP16P INP15NF714IN713NF612IN611NF12IN11IN23NF24IN35NF36IN47NF48IN59NF510IC17M5229PR22210R22310R2333K3R2343K3C187471C195124C198393C194123C193682C192272C191821C203124C196563C197183C179822C188471C17122/16C17222/16C15310/16C2042.2/16C1991/16C2050,47/16C15410/16-12+12R21610KVR2020KWVR2120KWVR2220KWVR2320KWVR2420KWVR2520KWVR2620KWVR32A20KWVR32B20KWR21410KR24233KR21510KR243 33KR24818KR24918KR25018KR25118KVR17A50KAVR17B50KAIC26A4556IC26B4556R182100KR183100KR2201KR26068KR2211KC16510/16C16610/16C180470/16C181470/16C22139C22239R23110R23210+12C16710/16C16810/16R10847R12047C213222C214222X26R26168K12X28C16910/16C17010/16-12C218104R1331KVR1650KAC212682X44MONOMASTERBOOTHEQUALIZERECHO LEVELREPEATDELAYLEVELSPEEDCUEPGMCUE LEVELSW23SW-PBSW24SW-PBSW25SW-PBSW26SW-PBSW27SW-PBSW