Harman JBL Commercial Series Service Manual
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Harman JBL Commercial Series Service Manual

1 channel mixer-amplifier
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Version A - 03/19
Service Manual
VMA-1240
Commercial Series
1 Channel Mixer-Amplifier
1

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Summary of Contents for Harman JBL Commercial Series

  • Page 1 Version A - 03/19 Service Manual VMA-1240 Commercial Series 1 Channel Mixer-Amplifier...

  • Page 2: Table Of Contents

    VMA 1240 Service Manual Version A - 03/19 Table of Contents Safety and Compliance Datasheets and Specifications Front Panel Rear Panel Wiring and Connectors Configuration Settings VOX Function Priority Muting Remote Volume Control Media Player Troubleshooting Block Diagram PCB Boards Schematics Bill of Materials...
  • Page 3 VMA 1240 Service Manual Version A - 03/19 IMPORTANT SAFETY INFORMATION WARNING FOR YOUR PROTECTION READ THESE INSTRUCTIONS: WARNING KEEP THESE INSTRUCTIONS RISK OF ELETRIC SHOCK DO NOT OPEN HEED ALL WARNINGS AVERTISSEMENT: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR FOLLOW ALL INSTRUCTIONS WARNING: TO THE REDUCE THE RISK OF FIRE OR ELECTRIC...
  • Page 4 VMA 1240 Service Manual Version A - 03/19 IMPORTANT SAFETY INFORMATION U.K. MAINS PLUG WARNING FEDERAL COMMUNICATION A molded mains plug that has been cut off from the cord is unsafe. COMMISSION INTERFERENCE STATEMENT Discard the mains plug at a suitable disposal facility. NEVER UNDER ANY This equipment has been tested and found to comply with the limits for a Class B digital CIRCUMSTANCES SHOULD YOU INSERT A DAMAGED OR CUT MAINS PLUG device, pursuant to Part 15 of the FCC Rules.
  • Page 5 Brand: Equipment Type: Commercial Mixer-Amplifiers Model names: VMA160, VMA1120, VMA1240, VMA260, VMA2120 We, Harman International, declare under our sole responsibility that the product, to which this declaration relates, is in conformity with the following standards. Report No. Description EN 55103-1:2009 EMC Compatibility –...
  • Page 6 VMA 1240 Service Manual Version A - 03/19 Performance VMA160 VMA1120 VMA1240 VMA260 VMA2120 Max Output Power per Channel 120W 240W 120W ≤ 0.5% THD into 4 Ω or 8 Ω Insertion Loss 1 dB maximum (70V & 100V outputs) Number of Input Channels Number of Output Channels Tone Controls...

  • Page 7: Front Panel

    VMA 1240 Service Manual Version A - 03/19 1.2 Front Panel Controls & Indicators MASTER MUSIC VMA 160 Figure 1.2.1 Front Panel, 1 Channel Model A. Input Level Controls B. Media Player Display C. Output Volume Control(s) Including an Illuminated ring around the output volume control will light green with signal presence while red indicates clipping, i.e.
  • Page 8 THE CENTER PIN OF THE PLUG MUST BE MAINTAINED. MONO MONO (Input 2) PRIORITY CONFORMS TO CONTAINS FCC ID: API-MB8811VMA HARMAN INTERNATIONAL VMA 1240 UL STD .60065 CONTAINS IC: 6132A-MB8811VMA 1718 W. Mishawaka Rd., CERTIFIED TO CSA STD. CMIIT ID: 2016DJ2941 Elkhart, IN 46517 C22.2 NO .60065...

  • Page 9: Rear Panel

    8-Not Used CONFORMS TO VMA 260 ÉNERGIE ÉLECTRIQUE 9-Music 2 to CH1 CONTAINS FCC ID: API-MB8811VMA HARMAN INTERNATIONAL UL STD .60065 CAUTION - TO REDUCE THE RISK OF DANGEREUSE VOIR LA 10-Not Used ELECTRIC SHOCK, GROUNDING OF CONTAINS IC: 6132A-MB8811VMA 1718 W.
  • Page 10 VMA 1240 Service Manual Version A - 03/19 FRONT VIEW MASTER 1 MASTER 2 88.10 mm [3.47 in] MUSIC 1 MUSIC 2 VMA 260 432.00 mm [17.00 in] SIDE VIEW 401.00 mm [15.79 in] Figure 2.2.1 Dimensions Front Angle Brackets Rear Angle Brackets Rear Flat Brackets Figure 2.2.2 Mounting Kit...
  • Page 11 VMA 1240 Service Manual Version A - 03/19 2.3 Ensuring Proper Cooling When using an equipment rack, keep a minimum space of 4 inches (10 cm) from the top surface of the unit. Close any open spaces in the rack with blank panels. DO NOT block any air vents.
  • Page 12 VMA 1240 Service Manual Version A - 03/19 2.5 Output Wiring & Connectors To drive distributed speaker systems designed to operate at 70V or 100V, connect to the corresponding output terminals. JBL recommends using pre-built or professionally wired, high-quality, two-conductor, heavy gauge speaker wire.
  • Page 13 THE CENTER PIN OF THE PLUG MUST BE MAINTAINED. MONO MONO (Input 2) PRIORITY CONFORMS TO CONTAINS FCC ID: API-MB8811VMA HARMAN INTERNATIONAL VMA 1240 UL STD .60065 CONTAINS IC: 6132A-MB8811VMA 1718 W. Mishawaka Rd., CERTIFIED TO CSA STD. CMIIT ID: 2016DJ2941 Elkhart, IN 46517 C22.2 NO .60065...
  • Page 14 VMA 1240 Service Manual Version A - 03/19 3.2 Input Routing The two-channel models, VMA260 and VMA2120, include a default routing of Input channels 1-3, Music The user may take any input and have it routed to both outputs by selecting the appropriate switch. For example, if you set switch 1 to ON, Input 1 will be routed to both AMP1 and AMP2.

  • Page 15: Vox Function

    VMA 1240 Service Manual Version A - 03/19 3.4 VOX Function Voice activated ducking is available on input channel 2 of the VMA160, VMA1120 and VMA1240. The feature is available for both input channels 2 and 5 of the VMA260, and VMA2120. The audio input level required to activate ducking is set using the trim pot on the rear panel.

  • Page 16: Media Player

    VMA 1240 Service Manual Version A - 03/19 3.7 Media Player 3.7.1 Bluetooth Operation To activate Bluetooth, perform the following: Enable Bluetooth of your source media player and search for “JBL COMMERCIAL (XX)”. Establish a connection. (Note that the “XX” represents the last two digits of the MAC address which allows the user to have multiple systems in close proximity.) illuminated.
  • Page 17 VMA 1240 Service Manual Version A - 03/19 • “MESSAGE_1.mp3” every 60 minutes while repeating all other tracks. • REPEAT OFF – No repeat. Press the PLAY/PAUSE key to pause or resume playing. Press the STOP key to stop playing. Press the PREVIOUS Key once to jump to the beginning of the current track or twice to the previous track.
  • Page 18 VMA 1240 Service Manual Version A - 03/19 4.0 Troubleshooting illuminated. CONDITION: No sound or low sound. POSSIBLE REASON: The input signal is not present or at a very low level. POSSIBLE REASON: The Master Volume control is turned down. POSSIBLE REASON: A CSR-V is connected and turned down.

  • Page 19: Block Diagram

    VMA 1240 Service Manual Version A - 03/19 Block Diagram - VMA160, VMA1120 & VMA1240 Table of Contents...

  • Page 20: Pcb Boards

    VMA 1240 Service Manual PCB Boards Version A - 03/19 Table of Contents...
  • Page 21 VMA 1240 Service Manual Version A - 03/19 Table of Contents...
  • Page 22 VMA 1240 Service Manual Version A - 03/19 Table of Contents...
  • Page 23 VMA 1240 Service Manual Version A - 03/19 5087031_PCB,ASY,VMA1240 _AMP 5087031_PCB,ASY,VMA1240 _AMP Table of Contents...
  • Page 24 VMA 1240 Service Manual Version A - 03/19 5087033_PCB,ASY,VMA1240_PSU 5087033_PCB,ASY,VMA1240_PSU Table of Contents...
  • Page 25 VMA 1240 Service Manual Version A - 03/19 Table of Contents...
  • Page 26 VMA 1240 Service Manual Schematics Version A - 03/19 Table of Contents...
  • Page 27 VMA 1240 Service Manual Version A - 03/19 Table of Contents...
  • Page 28 VMA 1240 Service Manual Version A - 03/19 Table of Contents...
  • Page 29 VMA 1240 Service Manual Version A - 03/19 Table of Contents...
  • Page 30 VMA 1240 Service Manual Version A - 03/19 Table of Contents...
  • Page 31 VMA 1240 Service Manual Version A - 03/19 Table of Contents...
  • Page 32 VMA 1240 Service Manual Version A - 03/19 Table of Contents...
  • Page 33 VMA 1240 Service Manual Version A - 03/19 MAIN_POWER MAIN_MUTE Table of Contents...
  • Page 34 VMA 1240 Service Manual Version A - 03/19 Table of Contents...
  • Page 35 VMA 1240 Service Manual Version A - 03/19 Table of Contents...
  • Page 36 VMA 1240 Service Manual Version A - 03/19 Table of Contents...
  • Page 37 VMA 1240 Service Manual Version A - 03/19 Table of Contents...
  • Page 38 VMA 1240 Service Manual Version A - 03/19 R193 C151 R197 J101 R103 0R DELAY_1 [1,2] R104 N.I Over-current C135 Q106 Protection R1004 C133 C142 10u 50V R1001 R1002 R1005 R100 C100 R1039 R1008 R1009 R1006 C134 R1007 C147 R1003 220R IGND_1 CR130...
  • Page 39 VMA 1240 Service Manual Version A - 03/19 +3.3V +3.3VA +3.3V MAIN_POWER MAIN_MUTE +3.3V 220u CR105 R3 47k +30V IGND_1 IGND_1 IGND_1 IGND_1 CHGND IGND_1 DELAY_1 C103 AMP1_PROTECTION 100u Table of Contents...
  • Page 40 VMA 1240 Service Manual Version A - 03/19 REVISION RECORD ECO NO: APPROVED: DATE: DC GBK25G +VCC1 NOTE 3 SEE NOTE 2 1/4W CT-1 3Pin 3.96mm 0.1uF 250V 1/4W SEE NOTE 2 CH1 AMP POWER SUPPLY -VCC1 NOTE 3 CHGND DC GBK25G +VCC2 CON-03P...
  • Page 41 VMA 1240 Service Manual Version A - 03/19 REVISION RECORD ECO NO: APPROVED: DATE: TO PSU Power Switch 0.0047uF 400VAC 4.7K TO PSU BLUE Power LED COMPANY: TITLE: VMA - 2-CH POWER SWITCH DRAWN: DATED: <Drawn By> <Drawn Date> CHECKED: DATED: CODE: SIZE:...

  • Page 42: Bill Of Materials

    VMA 1240 Service Manual Bill of Materials - VMA 1240 Version A - 03/19 Refer to the corresponding Service Bill of Materials (SBOM) to order parts stocked by Harman. Spare Parts List Ref ID Description VMA 1X240W MIXER AMP 120V...

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