Bose PowerMatch PM8500 Service Manual
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Bose PowerMatch PM8500 Service Manual

Configurable professional power amplifiers networked and non-networked versions
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PowerMatch
PM8500(N), PM8250(N),
®
PM4500(N) and PM4250(N)
Configurable Professional Power Amplifiers
Networked and Non-networked versions
Service Manual
©2013 Bose Corporation
Reference Number 326114-SM Rev. 02
Electronic Copy Only

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Summary of Contents for Bose PowerMatch PM8500

  • Page 1 PowerMatch PM8500(N), PM8250(N), ® PM4500(N) and PM4250(N) Configurable Professional Power Amplifiers Networked and Non-networked versions Service Manual ©2013 Bose Corporation Reference Number 326114-SM Rev. 02 Electronic Copy Only...

  • Page 2: Table Of Contents

    CONTENTS Safety Information ..........................3 Warranty ............................. 3 Specifications ..........................4-5 Product Description ........................6-15 Electrostatic Discharge Sensitive (ESDS) Device Handling ............. 16 Part List Notes ..........................16 Packaging Part List, PowerMatch Amplifier (refer to Figure 1) ..........17 ® Figure 1.

  • Page 3: Safety Information

    These tests MUST be performed to ensure that the product is safe to return to the customer after a repair. Important Note: Repairs are to be performed at the Bose repair facility ONLY. No repairs are authorized to be performed at any other locations globally. A dedicated light-up-and- play and burn-in test station is required to verify proper operation of repaired units.

  • Page 4: Specifications

    Total Latency (Analog in -Amp out) 0.8 mSec Input to Output Signal Routing 8 x 8 matrix ® Loudspeaker Presets Bose Professional Input EQ 5-band PEQ, +/-10 dB, or shelving Butterworth, Bessel, or Linkwitz-Riley, up to 48 Crossover Filters dB/octave...
  • Page 5 SPECIFICATIONS (CONTINUED) Front Panel Controls and Indicators Primay Display Type 240 x 64 LCD LED Common Indicators (all inputs and signal, limit, clip, fault outputs) Mute, input sensitivity, output attenuation, EQ on/off, User Interface Controls (front panel) preset select PC Interface Connection USB (network capable (N) adds Ethernet RJ45) Setup and Configuration Software ControlSpace V3.0 or greater...

  • Page 6: Product Description

    There are two versions in each category, i.e. PM8500 and PM8500N, which are identical except that the network capable (N) version adds an RJ45 connector on the rear panel to allow network control and monitoring of multiple units, using Bose ControlSpace ®...
  • Page 7 Front-Panel Controls and Menu Structure The amplifier front-panel LCD and user-interface controls allow all basic setup functions to be performed directly on the amplifier. The LCD screen provides output metering and status infor- mation during normal operation. Additionally, the LCD provides context-sensitive menu displays during setup and configuration using the front-panel controls.
  • Page 8 Output Power ConfIguratIons The amplifier allows output power to be allocated between 2 to 8 (or 4, depending on model) output channels and allows for both low-impedance and high-impedance (70V and 100V) loud- speaker loads. To illustrate the possible output configurations, the menu display for CH 1 output configurations are presented below: Intended Loudspeaker CH 1Menu Display...
  • Page 9 The I-Share and Quad-Bridge configurations require installing a shorting jumper (supplied in Connector Accessory Pack, Bose part number 343511-0010). See Figure 9 for placement of shorting jumper pins in output connector. When both jumpers are correctly placed, the first and last position of the connector should be empty.
  • Page 10 The PowerMatch amplifiers allow setup and configuration via the front-panel controls for all ® basic functions and recall of presets for Bose Professional loudspeakers. Advanced features, ® such as custom loudspeaker PEQ filters, may be accessed using the front-panel USB connec- tion to any PC running Bose ControlSpace V3.0 (or greater) software.
  • Page 11 Basic Setup Using Front Panel Controls Upon initial power-up of the unit, all front panel LED indicators will illuminate during firmware loading and testing. After about 20 seconds, the LCD will display the default screen from which the Main Menu may be accessed to make changes to the Factory Default Settings. LCD Operation Screen (no signal) - 4 channel units are similar Front Panel Menus and Default Configuration The following table shows the front-panel menu structure and factory default settings:...
  • Page 12 Configuration Changes Using Front Panel Controls Navigation using the front-panel interface is intuitive with context-sensitive menus displayed above the soft-key buttons. Soft keys are pressed to navigate to menu options. Data values are scrolled using the encoder knob, which is pressed to input a selected value. As an example, the following steps outline how to change the default settings for several key functions.
  • Page 13 Changing Output Configuration (continued) 4. Press CHANNEL soft key and rotate knob to display channel for which to change output configuration. 5. Press SELECT soft key and rotate knob to display desired output configuration. 6. Press knob to select desired configuration. For changes to or from Mono, or any Voltage Bridge configurations, follow steps 7A to 10A.
  • Page 14 ® ® Bose ControlSpace V3.0 (or later) software provides complete setup, configuration, control, and monitoring for the amplifier. Refer to the ControlSpace software documentation for the steps to install this application on your personal computer (Windows XP, Vista, or Windows 7). The...
  • Page 15 Bose PowerMatch PMESPLink Digital Input Card ® ® CAUTION: Electro-Static Discharge (ESD) sensitive device. Handle with care. To install the PMESPLink card in the PowerMatch amplifier, follow these instructions: 1. Turn off and unplug the amplifier. 2. Detach the rear expansion slot cover plate by removing the 2 screws. (see figure below left) 3.

  • Page 16: Electrostatic Discharge Sensitive (Esds) Device Handling

    ELECTROSTATIC DISCHARGE SENSITIVE (ESDS) DEVICE HANDLING This unit contains ESDS devices. We recommend the following precautions when repairing, replacing or transporting ESDS devices: • Perform work at an electrically grounded work station. • Wear wrist straps that connect to the station or heel straps that connect to conductive floor mats.
  • Page 17 PACKAGING PART LIST PowerMatch Amplifier (refer to Figure 1) ® Item Description Part Number Qty. Note Number PACKING, FOAM, PE, F, TOP ASSY 343459-0010 PACKING, FOAM, PE, F, BOTTOM REAR 343458-0010 PACKING, FOAM, PE, BOTTOM, FRT 343457-0010 CARTON, RSC, 26X21.38X7.75, DW, K 343456-0010 BAG, FILM, PE 24.00 X 30.00 X 3MIL 344095-0010...
  • Page 18 MAIN PART LIST PowerMatch Amplifier (refer to Figure 2) ® Item Description Part Number Qty. Note Number BEZEL/LENS ASSY, POWERMATCH, BLK 353105-0110 KNOB, LEXAN, 28mm, BLK 330387-0110 SHIELD, ESD, DISPLAY 347386-0010 BUTTON, SILICONE, RECT, BLK 330382-0110 KEYPAD, SILICONE, 5BTN, BLK 330386-0110 SCREW, M3-0.5X8, DOME WASHER 292505-001...
  • Page 19 MAIN PART LIST PowerMatch Amplifier (refer to Figure 3) ® Item Description Part Number Qty. Note Number SCREW, 6-32X5/16, THREAD ROLLING 289391-005 FOAM, NEOPRENE W/PSA, 0.063X0.5X40IN 327100-0010 BULKHEAD, FAN MOUNT, BLK 360758-0110 FAN, AXIAL, 12VDC, 80x80x25.4mm, 54.57CFM 326358-0010 INSULATOR, ELECTRICAL, MYLAR 331735-0010 PCB ASSY, AC INLET 345293-0020...
  • Page 20 MAIN PART LIST PowerMatch Amplifier (refer to Figure 4) ® Item Description Part Number Qty. Note Number SCREW, M3-0.5X8, DOME WASHER 292505-001 38/28 FAN, AXIAL, 12VDC, 80x80x25.4mm, 54.57CFM 326358-0010 NUT, HEX, M3.5 346369-0010 CABLE FFC DIG PCB - DISPLAY PCB 328403-0010 FOAM, NEOPRENE W/PSA, 0.125X3X1.5IN 327101-0010...
  • Page 21 MAIN PART LIST PowerMatch Amplifier (refer to Figure 5) ® Item Description Part Number Qty. Note Number SCREW, M3-0.5X8, DOME WASHER 292505-001 38/28 SCREW, TAPP, 6-32X0.3125, FLAT, XREC 331028-0020 FOAM, NEOPRENE W/PSA, 0.125X3X2.5IN 327102-0010 PCB ASSY, AMP 345290-001S STANDOFF, M/F M3 66MM LG HEX 327110-0010 BRACKET, PLASTIC, SUPPORT, HEAT SINK 330393-0010...
  • Page 22 Figure 6. PM8500N Amplifier with the cover removed...
  • Page 23 DISASSEMBLY PROCEDURES DANGER: SHOCK HAZARD The PowerMatch amplifiers have high voltage (up to 400 VDC) on the heatsink and ® much of the circuitry on the power supply PCB during operation. In addition, the power amplifier PCBs have a large amount of capacitance on the boards that retain a dangerous charge for a significant period of time.
  • Page 24 DISASSEMBLY PROCEDURES 3. Digital PCB Removal 3.1 Disconnect the chassis from AC mains. 3.2 Wait at least five (5) minutes to allow the power supply capacitors to discharge. Perform procedure 1. 3.3 If the unit is a network capable unit (i.e. PM8500N) and has a digital audio card installed, remove the two screws at the rear of the chassis that secure it and slide out the digital audio card.
  • Page 25 DISASSEMBLY PROCEDURES 5. Amplifier Board Removal Note: On 8 channel amplifiers, there are 2 amplifier boards located in the chassis. Amp 1 is located at the front of the chassis and Amp 2 is located directly behind it. It is not necessary to remove the digital board to remove Amp 1.
  • Page 26 DISASSEMBLY PROCEDURES 6. Display PCB Removal 6.1 Disconnect the chassis from AC mains. 6.2 Wait at least five (5) minutes to allow the power supply capacitors to discharge. Perform procedure 1. 6.3 Unplug the ribbon cable on the digital PCB at J17. 6.4 On the outside top front edge of the chassis, remove the three screws that secure the front panel to the chassis.
  • Page 27 DISASSEMBLY PROCEDURES 7. Output PCB Removal Note: There are 2 different versions of the output PCB, one with a long wiring harness to Amp 1 and one with a short wiring harness to Amp 2. Be sure to order the correct version when ordering a replacement PCB assembly.
  • Page 28 DISASSEMBLY PROCEDURES 9. Amp 1 / Power Supply Fan Removal Note: The fans located on the mounting plate at the front of the chassis cool both Amp 1 and the Power Supply PCB. 9.1 Perform procedure 1. 9.2 Unplug the wiring harnesses at J9 and J11 on the digital board.

  • Page 29: Amplifier (Refer To Figure 1)

    Corporate Test Engineer- test station. ® ing group. Any new versions of software will be pushed to the test station over the Bose 1.2 If the unit under test is a network capable network. (N) version amplifier, remove the cover over...

  • Page 30: Test Procedures

    TEST PROCEDURES 1.4 Log into the test station. Double-click the icon for the BEAT test program. Once that opens, click on the TEST button located at the lower left of the box. A pull-down menu will appear in the middle of the dialog box. Click on the pull down menu and select the LUAP (Light-up-and-Play) test.
  • Page 31 TEST PROCEDURES 1.6 Connect the AC line cord to the back of the amplifier and the AC source. Turn on the amp- lifier at the AC power switch, located at the back corner of the amplifier near the AC power cord connection.
  • Page 32 TEST PROCEDURES Firmware and Speaker EQ update - Double-click on the icon for ControlSpace Designer. The program will open and ® scan the connected unit for the installed firmware and EQ levels. If they are not correct, you will get the dialog box shown at right.
  • Page 33 TEST PROCEDURES 1.9 Once the input tests are completed, the OBSERVE THE DISPLAY FOR THE FOL- LOWING TESTS dialog box opens. The next several tests will require the opera- tor to view the unit’s front panel display and to respond to the prompt. VERIFY ALL PIXELS ARE ON - If all are on, click YES.
  • Page 34 (TAP) cable. Do not connect the AC line cord to the unit at this time. 2.2 Double-click on the test station’s BEAT (Bose Environment for Automated Test) icon. The Main GUI - Test window will open. Click on the TEST button.
  • Page 35 The reason this software shows eight test locations is because it was originally created for the burn- in rack at the Bose Tijuana manu- facturing facility, which uses eight burn-in locations. The UUT test slot number is located at the back...
  • Page 36 TEST PROCEDURES The test will start running, as shown at right. The below tests will be performed over the 1 1/2 hour test period: The software will then issue • the serial command to place the unit in 1/8 power mode (pink noise).
  • Page 37 8 - 8 ohm speakers (Bose doubleshot speaker arrays will work) ® • PC running Windows XP or higher with the most current version of the Bose ControlSpace ® Designer (CSD) software installed. The PC also needs Ethernet and USB connections. •...
  • Page 38 TEST PROCEDURES The window at right should open. Click the Out 1 to Out 8 boxes so that they are lit up in the In A row. This maps all outputs to the input A input connector. 3.5 Connect the amplifier to AC mains. 3.6 With no audio signal applied, turn on the unit.

  • Page 39: Hi-Pot Test

    TEST PROCEDURES CAUTION: If you are using Bose ® doubleshot speaker arrays as test loudspeakers, be sure to not exceed 50W input to each speaker or you will damage them. 3.16 Mute channel one. Un-mute the rest of the channels one by one. Re-mute each channel before moving to the next one.
  • Page 40 Once the unit is repaired, repeat the Hi-Pot and the ground bond tests to ensure the unit is safe to return to the customer. Equipment Required: • PC running Windows XP or higher with the most current version of the Bose ® ControlSpace ®...

  • Page 41: Firmware And Speaker Eq Update Procedure

    Firmware and Speaker EQ Update Procedure (continued) Once the update is complete, you will see a dialog box stating that the update was successful and asking to reboot the amplifier. Click OK. You can verify that the firmware has been updated from the amplifier front panel.

  • Page 42: Service Manual Revision History

    SERVICE MANUAL REVISION HISTORY Date Revision Description of Change Change Driven By Page(s) Level Affected 11/11 Document released at revision 00. Service manual release 10/12 Digital PCB part number changes. Software revisions 6/13 Added new PowerMatch amplifier New product versions release  ...
  • Page 43 SPECIFICATIONS AND FEATURES SUBJECT TO CHANGE WITHOUT NOTICE Bose Corporation The Mountain Framingham Massachusetts USA 01701 P/N: 326114-SM Rev. 02 6/2013 (P) http://serviceops.bose.com...

This manual is also suitable for:

Powermatch pm8500nPowermatch pm8250Powermatch pm8250nPowermatch pm4500Powermatch pm4500nPowermatch pm4250 ... Show all

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