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Technical Service Manual

Rev. A

7/16/2004

Содержание EON15 G2

Страница 1: ...Technical Service Manual Rev A 7 16 2004...

Страница 2: ...CONTROLS CONNECTORS AND INDICATORS 5 BLOCK DIAGRAM 8 CIRCUIT DESCRIPTIONS 9 TROUBLESHOOTING GUIDE 18 SEMICONDUCTOR DIAGRAMS 21 FINAL TEST PROCEDURE 22 PICTORIALS OF PCB ASSEMBLIES 23 JBL WARRANTY LIM...

Страница 3: ...Product Overview...

Страница 4: ...aterials production methods and design refinements are instituted into the existing product without notification and therefore the information contained within this manual is subject to change without...

Страница 5: ...Connectors Controls and Indicator...

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Страница 8: ...EON15 G2 Block Diagram...

Страница 9: ...vel through fuses F1 and F2 to the voltage selector switch SW2 that allows the customer to manually select between 120V or 230V It is important to power down the equipment before this switch is operat...

Страница 10: ...ing from peak to peak of 80 volts Simultaneously this rectified voltage from BR1 is also passed through clamping diodes D9 and D10 and regulated at 15 Vdc by Q15 and Q16 respectively This low voltage...

Страница 11: ...ing input of U1A on the EQ PCB The resulting signal is output on pin 1 and is directly connected to the boost side of the equalization controls A 12 dB cut or boost in signal can be achieved by this e...

Страница 12: ...D1 and D2 add input circuitry protection if the input signal is in excess of 15Vdc The signal travels to pins 2 and 3 of buffer amplifier U5A where the Common mode rejection cleans up the extraneous n...

Страница 13: ...onnected in series with each internal node encompassing IC detection circuitry Any voltage from the low frequency amplifier or the high frequency amplifier that is above the voltage drop of D1 or D2 l...

Страница 14: ...n connector cable Specifically pin 1 of WH1 carries this signal to pin 1 of connector P1 A signal of 65Vpp enters the serially connected multipath high pass filters U2 A and U2 B U2 D enhances the ver...

Страница 15: ...erially reduced by R1 and connected to the non inverting input of U1 at pin 3 Operating stability is increased by adding the supersonic frequency input filter through the shunt of R7 and C2 and by add...

Страница 16: ...nal of 7Vpp enters from pin 1 of P1 to the serially connected low pass filters U4 A and U4 B The signal diverges to U4 C and U4 D where the upper limit midpoint 110 7Hz and the lower limit midpoint 62...

Страница 17: ...he power amplifier are 40 Vdc as rectified by bridge BR1 located in the Power Supply Module The output and driver transistors are driven by the preceding stages which make use of the bootstrap supply...

Страница 18: ...rify complaint and repair product as necessary if product is eligible for in warranty status It is the practice of JBL Professional to always give the customer the benefit of doubt concerning decision...

Страница 19: ...ir verify and continue Verify 15V at P1 pins 3 4 on Main PCB and to P1 on input output PCB If absent locate repair and continue No sound possible missing control voltage Verify 15Vdc at P1 pins 3 4 on...

Страница 20: ...ult using correct circuit description of module repair and continue check out No Illumination of Power On LED Indicator Verify 15 volt at Q16 pin 4 of P1 and leg of R85 Verify 2V on opposite end of R8...

Страница 21: ...Semiconductors...

Страница 22: ...LR input 1 Increase volume control fully CW LF Output signal should be 25 dB 1 dB Change sine wave frequency to 10 kHz HF Output signal should be 26 dB 1 dB INPUT 2 3 Setup Monitor HF output on oscill...

Страница 23: ...Qty Description Ref Des 1 32 1244 1 Con Plug AC Receptacle 3 Pin P1 2 44 0004 1 Switch Power SW1 3 453 13222 00 2 Fuse 3 15 A Time Lag 5X20 mm F1 F2 4 44 0015 1 Switch Voltage Select 115V 230V SW2 5...

Страница 24: ...9 72 4034 1 IC LM339 Comparator U6 3 40 0083 1 Pot 5K C 9mm Horiz VR1 10 70 0038 1 LED Green R A T 1 Housing DS2 4 42 0006 1 Pot 10K Side Adjust BK VR6 11 44 0051 1 Switch 4PDT 12 Pin SW2 5 40 0082 2...

Страница 25: ...1 IC TDA 7293 U1 2 70 0033 2 XSTR 2SB186A PNP Q16 Q17 8 72 1450 2 IC TL074 U2 U5 3 70 0034 3 XSTR 2SD1763A NPN Q15 Q13 Q11 9 70 0037 5 XSTR 2SA1370 PNP Q14 12 10 9 7 4 44 0016 1 Sw Therm 1A NC 60 Deg...

Страница 26: ...Board Parts List http www jblproservice com pdf EON G2 20Series EON15 G2 20Main 20Board 20Parts 20List pdf Click here for the Main Board Schematics Serial numbers above EON15 G2 27225 http www jblpros...

Страница 27: ...ick here for the Input Output Control EQ Boards Parts List http www jblproservice com pdf EON G2 20Series EON15 G2 20Input Output Control 20and 20EQ 20Board 20Parts 20List pdf Click here for the A C I...

Страница 28: ...the next section of this warranty How to Obtaln Warranty Pertormance If your JBL product ever needs service write or telephone us at JBL Incorporated Attn Customer Service Department 8500 Balboa Boul...

Страница 29: ...ic Position 12 dBu to 20 dBu for Rated Output Mic Line Switch in Line Position SYSTEM COMPONENTS CONT D Input 2 3 Sensitivity 18 dBu to 20 dBu for Rated Output Output Level 20 dBu peak Loop Mix Switch...

Страница 30: ...F Woofer Baffle BLACK WHITE BLUE RED F 187 F 250 H F 2418H 1 F 205 F 250 Amplifier PCA Transformer AC Power Input PCA Signal Input PCA Harness Assy Supplied with Signal Input Tree Mount Tie 925 0000 0...

Страница 31: ...N15 G2 128 00428 00 Spring 337972 001 Screw 2 862 31210 20 6 20 x 1 1 4 BLK TR PH AB Threaded Bottom Logo Grille F EON 950 00004 00 Use P N 321156 001 Fastener Tinnerman 809 45310 00 Use P N 809 90003...

Страница 32: ...EON15 923 00025 00 Screw 2 900401 020 MS PPH 10 32 x 1 25 BLK Nut Special 321244 001 1 4 20 Transformer 120V 230V EON15 G2 562 00039 00 Washer Flat 844 90001 07 1 4 20 x 1Dia Bolt 1 875 03073 52 1 4 2...

Страница 33: ...re codes Please utilize these codes on every warranty claim submitted to JBL Professional Exclusion of these codes will result in the return of warranty claims We have designed these codes to be as si...

Страница 34: ...sistor Not Secured to Heat Sink IN 10 066 Burned OUT 10 027 Transistor Wrong Part IN 10 028 Transistor Burned OUT 10 070 INDUCTOR Specify 10 071 Inductor Open IN 10 030 FET Specify 10 072 Inductor Bur...

Страница 35: ...Trace IN 10 143 PCB Cracked IN 10 200 Components Touching Shorted 10 144 PCB Bad Feedthrough via IN 10 145 PCB Chemical Damage IN 10 300 SOLDER PROBLEMS Specify 10 146 PCB Exchange Amp Board IN 10 30...

Страница 36: ...2 Adjust Bias IN 10 603 Adjust Meter IN 10 604 Adjust Chassis IN 10 700 MISC HARDWARE Specify 10 701 Screw Missing from factory IN 10 702 Screw Broken from factory IN 10 703 Screw Loose from factory I...

Страница 37: ...12 Rubbing Dented Dome OUT 4 2 Shorted Voice Coil Turns IN 1 13 Rubbing V C Driven Out of Gap OUT 4 2 Shorted Voice Coil Turns Rubbing IN 1 14 Rubbing Off Center Spider IN 4 4 Shorted Voice Coil to Po...

Страница 38: ...xternal Damage Hardware OUT 11 3 Missing Diaphragm Assembly OUT 11 4 Poor Field Installation OUT 7 1 Buzzing Unclassified Specify OUT 11 5 Returned Incomplete OUT 7 2 Buzzing Diaphragm Overdriven indi...

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