SERVICE MANUAL PMX-1400

Transcription

1 SERVICE MANUAL PMX-00 Stereo Preamp Mixer CONTENT S: Connections & Operations:...Page - Specifications:...Page Parts Lists:...Page - PCBs:...Page - Schematics...Page 0- Gemini Sound Products Corp. 0 Clover Place P.O. Box Edison, NJ (Phone) --00 (Fax) ()

2 PMX-00 ()

3 MAIN POWER 0 AMP RIGHT LEFT 0 0 BOOTH REC L L L PH L L PH L L PH L PH L PH L L PH GND LIFT ()

4 INTRODUCTION: Congratulations on your purchase of the Gemini PMX -00 Mixer. This state-of-the-art unit is backed by a three year warranty, excluding crossfader and channel slides. Prior to use, we suggest that you carefully read all the instructions. FEATURES: Stereo Channels Talkover State-of-the-Art Cue Section Dual Band Graphic Equalizers Booth and Record outputs Balanced and Unbalanced Master Outputs Phono/Line Convertible, Line, and Mic Inputs CAUTIONS:. All operating instructions should be carefully read before using this equipment.. 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 () -000 for Gemini Customer Service. Do not attempt to return this equipment to your dealer.. Do not expose this unit to direct sunlight or to a heat source such as a radiator or stove.. This unit should be cleaned only with a damp cloth. Avoid solvents or other cleaning detergents.. When moving this equipment, it should be placed in its original carton and packaging. This will reduce the risk of damage during transit.. DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE.. DO NOT USE SPRAY CLEANER OR LUBRICANT ON CONTROLS OR SWITCHES. CONNECTIONS:. Before plugging the power cord in, make sure that the VOLTAGE SELECTOR () switch is set to the correct voltage. NOTE: THIS PRODUCT IS DOUBLE INSULATED AND IS NOT INTENDED TO BE GROUNDED.. Make sure that the POWER () switch is in the OFF position. The POWER () display will be off.. The PMX-00 is supplied with four sets of output jacks: The MAIN OUTPUT () jacks connect to the main amplifier. The BALANCED MASTER OUTPUT () jacks connect the mixer to main amplifier using standard cables with / connectors. We recommend using balanced cables if the distance to your amp is 0 feet or more. The REC OUTPUT () jacks can be used to connect the mixer to the record input of your recording unit, thus enabling you to record your mix. The BOOTH OUTPUT () jacks allow the connection of an additional amplifier.. The MIC input (located on the front panel) accepts an XLR connector. The MIC () input (on the rear panel) accepts /" connectors. All accept balanced and unbalanced microphones.. On the rear panel are three stereo PHONO/LINE (0,, ) inputs and five stereo LINE (,,,, ) inputs: PHONO/LINE SWITCH () enables you to set the (0) input to Phono or Line. () PHONO/LINE SWITCH () enables you to set the () input to Phono or Line. PHONO/LINE SWITCH () enables you to set the () input to Phono or Line. Attach phono ground line to the GROUND THUMB SCREW ().. Headphones may be plugged into the front panel mounted HEADPHONE () jack.. The PMX-00 comes with a front panel BNC LIGHT () jack for use with a (not provided) gooseneck light. USING THE GROUND LIFT SWITCH: Depending on your system configuration, application of the ground will sometimes create a quieter signal path. Lifting the ground occasionally eliminates ground loops and hum to create a quieter signal.. With the mixer ON, listen to the system in idle mode (no signal present) and with the ground applied and the GROUND LIFT SWITCH (0) in the LEFT position.. Turn the power OFF before moving the GROUND LIFT SWITCH (0). Lift the ground by moving the GROUND LIFT SWITCH to the RIGHT, turn the power back ON and listen to determine which position provides a signal devoid of background noise 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:. POWER: Once you have made all the equipment connections to your mixer, press the POWER SWITCH (). The power will turn on and the POWER () will glow RED.. CHANNEL : Switch () allows you to select PHONO /LINE () or the LINE () input. CHANNEL SLIDE (0) controls the input level of this channel.. CHANNEL : Switch () allows you to select PHONO /LINE () or the LINE () input. CHANNEL SLIDE () controls the input level of this channel.. CHANNEL : Switch () allows you to select PHONO /LINE (0) or the LINE () input. CHANNEL SLIDE () controls the input level of this channel.. CHANNEL : Switch () allows you to select either the LINE () or LINE () input. CHANNEL SLIDE () controls the input level of this channel.. CROSSFADER: The CROSSFADER () allows the mixing of one source into another. The PMX-00 features an assignable crossfader. The ASSIGN (, ) switches allow you to select which channel will play through each side of the crossfader.. ASSIGN () switch has five settings (OFF,,, and ) and allows you to direct Channel,, or through the LEFT side of the crossfader. ASSIGN switch () also has five settings (OFF,,, and ) and allows you to direct Channel,, or through the RIGHT side of the crossfader. Placing either ASSIGN switch in the OFF position inactivates that side of the crossfader. The CROSSFADER in your unit is removable and, should the need arise, can be easily replaced. Replacement crossfaders are available in three models: the RG- PRO (RAIL GLIDE ) Dual- Rail Crossfader; as well as RF-, which has a mm travel from side-to-side; and the PSF-, which features a special curve designed for scratch mixing. Your Gemini mixer is equipped with an RG- PRO (RAIL GLIDE ) MM DUAL-RAIL CROSSFADER featuring internal dual stainless steel rails that allow the slider to ride smoothly and accurately from end-to-end.

5 The following instructions are provided for those who purchase a crossfader replacement unit from an authorized Gemini dealer: 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).. EQUALIZER: This unit features dual band GRAPHIC EQUALIZERS (, ) that allow you to adjust the sound to fit any room. Activate the equalizer by pressing EQ BUTTON () (EQ is illuminated). By adjusting any of the LEFT equalizer slide controls (), you can cut or boost the tonal characteristics of the sound coming from the LEFT speaker by ± db. Adjusting any of the RIGHT equalizer slide controls () allows you to cut or boost the tonal characteristics of the sound coming from the RIGHT speaker by ± db. Deactivate the equalizer by pressing the EQ BUTTON () again (EQ is OFF).. OUTPUT CONTROL: The level of the MAIN OUTPUT () is controlled by the MASTER () slide. Activating the MONO () button (MONO is illuminated) converts the overall output to mono. The BOOTH () control adjusts the level of the BOOTH OUTPUT (). HINT: BOOTH OUTPUT IS USED BY SOME DJS TO RUN MONITOR SPEAKERS IN THE DJ BOOTH. IT IS ALSO USED AS A SECOND ZONE OR AMP OUTPUT. NOTE: REC OUTPUT HAS NO LEVEL CONTROL. LEVEL IS CONTROL WITH THE CHANNEL SLIDES OF THE SELECTED CHANNEL(S). TONE IS CONTROL VIA THE EQUALIZERS. 0.TALKOVER: The purpose of the talkover is to allow the program playing to be muted so that the mic may be heard above the music. The MIC/TALKOVER SWITCH () controls MIC and MIC and has three settings. When MIC/TALKOVER () is in the BOTTOM position, MIC, MIC and TALKOVER are all OFF. When MIC/TALKOVER () is in the CENTER position, MIC and MIC are ON. MIC INDICATOR () glows/talkover is OFF. When MIC/TALKOVER SWITCH () is in the TOP position, MIC, MIC and TALKOVER are ON and the volume of all sources except MIC inputs is lowered by db.. TREBLE () and BASS () controls allow you to adjust the tone of MIC and MIC. MIC LEVEL () controls the level of MIC while MIC LEVEL () controls the level of MIC. SPECIFICATIONS: INPUTS: Phono... mv, KOhm Line...0 mv, KOhm MIC & MIC... mv, K Ohm Balanced Bass...± db High...± db OUTPUTS: Amp/Booth...0 db V, 00 Ohm Max...0V Peak-to-Peak Rec... mv, KOhm GENERAL: Frequency Response...0Hz - 0KHz /- db Distortion...0.0% S/N Ratio...Better than 0 db Talkover Attenuation...- db Headphone Impedance... Ohm Echo...00m sec Power Source.../0V, 0/0Hz, 0W Dimensions... w x d x h ( x x mm) Weight...0. lbs. (. Kg) Parts Lists: Cabinet Parts and Packing Description Part # PANEL CONTROL PANEL REAR COVER BOTTOM BRACKET VR HOLDER X-FADER PROTECTOR PLATE FOR /0V SWITCH SWING LEVEL KNOB 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, ASSIGN EQ VR INLAY TRIM VR INLAY PLATE HOLDER f (mm) HOLDER HOLDER WASHER XLR PCB SPACER SUPPORT PAD FOOT BNC DUST PROOF CLOTH DUST PROOF CLOTH (VR) DUST PROOF CLOTH (KNOB-SWING) DUST PROOF CLOTH (VR) FADER DUST PROOF CLOTH GND SCREW FLAT-HEAD MACHINE SCREW; FMS X (Y) FACEPPMX CUE: By connecting a set of headphones to the HEADPHONE () jack, you can monitor any or all channels. Press CUE ASSIGN (0) buttons for Channels through and select the Channel(s) to be monitored. The respective indicators will glow. Use the CUE LEVEL () control to adjust the cue volume without changing the overall mix. By moving the CUE PGM PAN (0) control to the LEFT you will be able to monitor the assigned cue signal. Moving the control to the RIGHT allows you to monitor PGM (program) output..display: The DISPLAY () indicates the MASTER output of the left and right levels. Printed Circuit Boards Description Part # PRINTED CIRCUIT BOARD PDMS-:IN/OUT PRINTED CIRCUIT BOARD PDMS-:MAIN PRINTED CIRCUIT BOARD PDMS-: FADER (. ) PRINTED CIRCUIT BOARD PDM-:PHONE PRINTED CIRCUIT BOARD PDM-: PHONE JACK ( ) ()

6 Parts Lists - PCB Input/Output IC- IC IC ICs INTEGRATED CIRCUIT NJM0LD INTEGRATED CIRCUIT NJMFA INTEGRATED CIRCUIT NJMFA Q- Q Transistors TRANSISTOR SC TRANSISTOR SA0 (SA) Parts Lists - PCB Main 0 D-, D0, D0 D, D SW- J J- J IC IC-0 IC IC- SW- SW-0 SW- SW VR- VR- X-FADER VR- VR- Red. Green.x. Yellow.x. Red.x. Parts Lists - PCB Phono Electrical Parts RECTIFIER DIODE N00 (N00,N00) SILICON DIODE N SLIDE SWITCH PC PH/LINE PHONE JACK. P RCA JACK P=mm P RCA JACK P=mm ICs INTEGRATED CIRCUIT NJMLD(MAL,BAN) INTEGRATED CIRCUIT NJM0LD INTEGRATED CIRCUIT MP INTEGRATED CIRCUIT LB0N Electrical Parts LEVER SW PC P= PH/LN,LN/LN ROTARY SWITCH -- L= FAD ASSIGN PUSH SWITCH PC L=. CUE,MONO PUSH SWITCH PC L=. SLIDE VR mm L=0 CH VOL MASTER 0KA SLIDE VR 0mm L= EQ 0KW C.C RAILGLIDE VR mm X-FADER 00KB ROTARY VR f L=0 TREBLE,BASS 0KB C.C ROTARY VR f L=0 MIC LEVEL 0KA LIGHT EMITTING DIODE (RED) LIGHT EMITTING DIODE (GREEN) LIGHT EMITTING DIODE (YELLOW) LIGHT EMITTING DIODE (RED) IC, IC0 IC IC IC ICs INTEGRATED CIRCUIT NJMLD(MAL,BAN) INTEGRATED CIRCUIT NJML INTEGRATED CIRCUIT NJM0LD INTEGRATED CIRCUIT MP Diodes D- LIGHT EMITTING DIODE (RED).f 00-0 SW SW VR- VR- VR VR J0 Electrical Parts PUSH SWITCH PC L=. CUE,MONO PUSH SWITCH PC L=. EQ SLIDE VR mm L=0 CH VOL MASTER 0KA SLIDE VR 0mm L= EQ 0KW C.C SLIDE VR mm L=0 CUE PGM 0KB ROTARY VR f L=0 CUE LEVEL 0KA JUMP WIRE TYPE 0.f P=mm T/mm ()

7 PCB - Input/Output Page

8 PCB - Main Page

9 PCB - Phono Page

10 ICA 0LD ICB 0LD R R K % R K % R 0K % R R 0K % R 0K % C 0 C 0 C 0 C 0 C / C C / C C / X C0 C C / R0 K % R K % R 0K % J - - ICA 0LD ICB 0LD R 00K R R R0 K R 0 R R K R R 0 R 00K C C 0 C C 0 C C0 C / C / C / C / C C R K R K R K R K C 0 C 0 C C0 C C - ICA 0LD ICB 0LD R 00K R R R K R 0 R R K R R 0 R 00K C C 0 C C 0 C C C / C / C / C / C0 C R K R L R K R K C 0 C 0 C C C C - ICA 0LD ICB 0LD R 00K R R R K R 0 R0 R K R R 0 R 00K C0 C 0 C C 0 C C C / C / C0 / C / C C R K R K R K R K C 0 C 0 C C C C R K R K R0 K R0 K R K R K X X X X X R0 K R K C 0 C 0 C0 C R K R K C 0 C 0 C C R 0 R R 0 R K R 0 R0 0 R K C / C / R Q SC Q SC R0 0 R R 0 R K R 0 R 0 R K C0 / C / R Q SC QSC R R R K R K C C D N00 D N00 D N00 D N00 C 0/ C0 0/ C 0 C 0 C,/ C,/ - - Vin GND V IC Vin GND -V IC Q SA R 0K D N D N C 0/ C,/ SWA SWB SWA SWB SWA SWB JA JB JA JB JA JB JA JB JA JB JC R K X D N00 D N00 C 0/ X X? D0 N00 D0 N00 X X R M - MIC- PH; L PH/L L PH-; L L PH-/L PH-/L PH-; L L L L OUT REC. OUT BOOTH OUT AMP. X X 0 SWD SWA SWB SWC R R0 K R R D VRA 0KA VRB 0KA R VR 0KA R0 0K R K R R K R R0 K R0 K R K R 0K ICA 0LD ICB 0LD C C C C C C C00 C / C / C0 / - R 0K R 0K R R R R R R R R -VCC 0 GND VCC OUT N INP P INP NF IN NF IN NF IN IN NF IN NF IN NF IN NF 0 IC MP R0 0 R 0 R K R K C C C C C0 C C C C C C C / C0 C / C./ C 0./ C0 - R 00K R 0 R 0 ICA 0LD C0 0 C / C / C / - R 0K C0 / C0 / R0 0K ICB 0LD C 0 R 00K SWA SWB SWC C / C / SWA SWB SW0B SW0A R 0K R 0K C / IC LB0N IC LB0N IC LB0N IC LB0N D D D D D D D D D D0 D D D D D D D D D D0 R 0K R 00K R 0K R 0K R 0K R K R 0K R 00K R 0K R 0K R 0K R0 K R R R C0 C0./ C0 C0 C0./ C R R R 0 R 0 IC0A 0LD C C / C / C / - C 00/ C 00/ IC0B 0LD C R C0 / SWD - - R 0K VR 0KW VR 0KW VR 0KW VR0 0KW VR 0KW VR 0KW VR 0KB VR 0KB VR 0KW C SWA SWB X 0 SWD SWA SWB SWC R R0 K R0 R D VRA 0KA VRB 0KA R R 0K R 0K SWA SWB X 0 SWD SWA SWB SWC R R0 K R R D VRA 0KA VRB 0KA R R 0K R 0K SWA SWB X 0 SWD SWA SWB SWC R R0 K R R D VRA 0KA VRB 0KA R00 R 0K R 0K SWA SWB R0 K D R 0K ICA ICB R K R R R K C / C / C C C C C / R C / L R L R L R L R R R R R L L L L R R R R L L L L V IND GND V IND GND VR 0KA R X X X - X0 X QUE QUE QUE QUE CH- CH- CH- CH- MIC- MIC- X-FAD. ASSIGN X-FAD. ASSIGN A B T.O ON OFF T.O. X T TR0 X SW F SW SW-SPST C 0 J PLUG J PLUG J LAMP AC 0/0 V SW X RB 00KB RA 00KB CROSS FADER X0 PLUG0 0- Page 0 Schematic A

11 - X -VCC 0 GND VCC OUT N INP P INP NF IN NF IN NF IN IN NF IN NF IN NF IN NF 0 IC MP R R0 R K R K C0 C C C C C C C C C C C C / C0 / C C,/ C0 / C 0,/ C0 - R K R R ICA 0LD C C C / C / ICB 0LD C R K C R 0K R00 0K R0 K R0 K R K D - R K R K R K D VRA 0KA VRB 0KA ICA ICB R 00K R 00K R K R0 K R0 K R0 K C C C / C / C C R 0 R 0 - VRA 0KA VRB 0KA IC0A IC0B R0 00K R 00K R K R K R K R K C C C / C / C C R 0 R 0 - VRA 0KW VRB 0KW R0 0K R K R0 0K R0 K R K R K R0 K R K VRA 0KA VRB 0KA ICA ICB R 00K R 00K R0 K R K R0 K C C0 C 0/ C 0/ C C R 0 R 0 - C C R R C00 C0 - X0 R0 0K VR 0KW VR 0KW VR 0KW VR0 0KW VR 0KW VR 0KW VR 0KW R K SWA SW0 SWB SW0 SWA SW0 SWB SW0 SWC SW0 - ML MR RR RL ML ML MR MR BL BR RL RR BL BR ML MR RR RL X X X C C D R K X0 J0 PHONEJACK X 00 Schematic B Page