Harman Crown DCi 4 1250DA Operation Manual Download Page 51 | Manualshive

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DriveCore Install DA Series Operation Manual

Using the GPIO Port

Figure 55:

Control Port output configuration

NOTE:

In all modes, the polarity of the binary output can be toggled under the Output Polarity tab, where “Normal” or “Inverted” can be selected.

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Summary of Contents for Crown DCi 4 1250DA

Page 1: ...n provided in this manual was deemed accurate as of the publication date However updates to this information may have occurred To obtain the latest version of this manual please visit the Crown website at www crownaudio com Trademark Notice Com Tech BCA Crown Crown Audio Amcron and Multi Mode are registered trademarks of Crown International DriveCore DriveCore Install IQwic PIP and PIP2 are tradem...

Page 2: ...eplacement of the obsolete outlet 10 Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus 11 Use only with the cart stand tripod bracket or table specified by the manufacturer or sold with the apparatus When a cart is used use caution when moving the cart apparatus combination to avoid injury from tip ...

Page 3: ...nts Class B EN55103 2 2009 EMC Compatibility Product Family Standard for Audio Video Audio Visual and Entertainment Lighting Control Apparatus for Professional Use Part 2 Immunity EN 61000 3 2 2014 Limits for Harmonic Current Emissions equipment input current less than or equal to 16A EN 61000 3 3 2013 Limitation of Voltage Fluctuations and Flicker in Low Voltage Supply systems Rated Current less ...

Page 4: ...s 27 Library Filename Conventions 27 Editing DSP Settings 28 Configuration Panel 29 Source Routing Panel 31 Input Output Delay 33 Input Output Equalization 34 Crossover 35 LevelMax Suite Limiters 36 Using Dante 37 Dante Introduction 37 Dante Specifications 37 Connecting Dante Ports 37 Fault Tolerance 37 Mastership 37 Dante LED indicators 38 Routing Dante 38 Using Device Presets 40 Amplifier Preset...

Page 5: ...ith PFC for reduced current draw and industry leading efficiency Monitoring and control over TCP IP Real time continuous load monitoring Remote standby Sleep mode is activated via the Aux port Power saving modes power consumption in Sleep mode is less than 1W Adjustable auto standby 70Vrms 100Vrms direct drive each channel individually configurable for low Z or high Z operation Advanced protection...

Page 6: ...AUTION Before you begin make sure the amplifier is disconnected from the power source Figure 1 shows the dimensions of the DCi DA Series amplifiers The DCi 4 1250DA and DCi 8 600DA models are 3 5 in 8 9 cm high 19 in 48 3 cm wide and 17 in 43 2 cm deep The DCi 4 300DA DCi 4 600DA and DCi 8 300DA models have the same width and height dimensions but are 14 25 in 36 2 cm deep Mount the unit in a stan...

Page 7: ...on the data network Dante traffic is not indicated on this LED Rear Panel Overview AUX CLASS 2 WIRING INPUT GPIO ETHERNET100Mb ACT DANTE OUT 3 3V IN PRIMARY SECONDARY CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK GROUNDING OF THE CENTER PIN OF THIS PLUG MUST BE MAINTAINED 4 3 2 1 8 7 6 5 MAC ADDRESS SERIAL NUMBER SERIAL NUMBER BAR CODE RESET DATA PRESET Auxiliary Connector This 3 pin plug in type c...

Page 8: ...cord is disconnected from the amplifier and carefully review the total impedance for loudspeakers connected to each amplifier output If multiple loudspeakers are connected to an output in Low Z mode i e in series parallel or series parallel be certain the total system impedance is within the allowed specification for the output When multiple loudspeakers are connected to one output in High Z mode ...

Page 9: ...els to the desired level IMPORTANT Before making any wiring or installation changes turn off the amplifier and disconnect the power cord For help with determining your system s optimum gain structure signal levels please refer to the Crown Amplifier Application Guide available online at www crownaudio com Precautions Your amplifier is protected from internal and external faults but you should stil...

Page 10: ...s is a referred to as a star network topology 100Mbps network switches and Category 5 cabling can be used for smaller Dante networks where smaller channel counts and or lower sample rates are used For optimum performance and improved reliability a Gigabit network and Category 5e or Category 6 cabling should be used Visit the Audinate website for more information To provide fault protection when us...

Page 11: ...or smaller Dante networks where smaller channel counts and or lower sample rates are used For optimum performance and improved reliability a Gigabit network and Category 5e or Category 6 cabling should be used Visit the Audinate website for more information To provide fault protection when using Dante connect the Secondary ports of all Dante devices to a secondary separate network switch If any pr...

Page 12: ...hannel counts and or lower sample rates are used For optimum performance and improved reliability a Gigabit network and Category 5e or Category 6 cabling should be used Visit the Audinate website for more information To provide fault protection when using Dante connect the Secondary ports of all Dante devices to a secondary separate network switch If any primary cable connections or the primary sw...

Page 13: ...ty a Gigabit network and Category 5e or Category 6 cabling should be used Visit the Audinate website for more information To provide fault protection when using Dante connect the Secondary ports of all Dante devices to a secondary separate network switch If any primary cable connections or the primary switch fail the secondary Dante network will automatically take over For further information on D...

Page 14: ...carry Dante audio only and cannot be used for control and monitoring of the amplifier Launching Audio Architect After launching Audio Architect the software will scan the network for HiQnet devices and a prompt will appear if the connected HiQnet devices are properly configured for the network and discovered see Figure 15 Checking the Add discovered devices to the Venue automatically checkbox can ...

Page 15: ...o information regarding the PC HiQnet Address IP Address and Subnet Mask Figure 17 NetSetter window 1 PC Adapter Use this dropdown menu to select the Network Interface Card NIC that NetSetter will use to attempt to discover HiQnet devices All available NIC s are listed by IP Address Selecting a new NIC will force a rescan of the network to which the new NIC is connected 2 Display The options avail...

Page 16: ...curity measures via proxy connections 6 Static Routes This feature is used to set up a static route and connect directly to a device located on a different subnet than the PC 7 Clear Container Resets the Container Position Venue data of the selected device The action occurs when clicking on either the Apply Current Edits or Apply and Exit button so that changes may be undone with the Undo Current ...

Page 17: ...tter window If a DHCP server is not detected the information will read DHCP server not detected Note that checking a device s DHCP Auto IP checkbox has no immediate effect on the column sort order NOTE Once edits have been made it is critical to click the Apply Current Edits or Apply and Exit buttons for the changes to take affect 3 IP Address Displays the IP address of the discovered device A val...

Page 18: ...ndom HiQnet address If you want to set the HiQnet address of a device to a random ID check the Random ID checkbox If the checkbox is unchecked before applying current edits the prior HiQnet ID value will be restored All devices in the current filter view may be set to Random HiQnet ID by checking the checkbox in the column header the individual checkboxes for all devices will become checked If any...

Page 19: ...fields The device is being rediscovered after applying current edits NOTE Since the sort order automatically updates when a field within the sorted column is updated the rediscovered device will occupy the same row on rediscovery The exception is when DHCP Auto IP or Random ID has been set prior to applying current edits in which case the rediscovered device will occupy the appropriate row in the ...

Page 20: ...ss level HiQnet address conflict etc will not be able to report its Container Position data In this instance the Container Position field will display a to indicate that the field may exist but that the software does not have enough discoverability of the device to determine the value A blank field or implies the value is null 12 Locate The Locate feature allows a device to be easily identified wi...

Page 21: ... Figure 20 NOTE When a device is added to the venue it is automatically removed from the Discovered device list If the Add discovered devices to the Venue automatically checkbox was checked upon launching Audio Architect as previously mentioned discovered devices were already added to the venue and this step is not necessary Each device added to the venue will have an IP address listed to the left...

Page 22: ...ettings from the device s and display them in Audio Architect Matching Devices The Match Devices ribbon appears at the top of the main Audio Architect window after clicking the Go Online button from the Offline Design ribbon then clicking the Match Devices button from the Online Operate ribbon The Match Devices feature allows devices within the venue design to be associated with the hardware devic...

Page 23: ...mprehensive diagnostics feature set All of these features can be accessed from the Configuration panel Figure 24 Configuration panel 4 channel amp model shown The DCi DA amplifiers are very capable and flexible amplifiers In the Amplifier Mode Settings window see Figure 25 the following options can be adjusted Inputs can be cascaded or Y ed to amplifier outputs Each output pair can operate as dual...

Page 24: ...6 One input can be used to drive some or all of the amplifier outputs Figure 26 Use the Y checkboxes to cascade input channels Figure 27 With the Y 1 2 box checked both output Ch 1 and Ch 2 are fed by input Ch 1 and input processing is organized accordingly NOTE By cascading the inputs the corresponding input DSP functions for individual channels will be removed and only the output DSP functions w...

Page 25: ...gured for bridge mono operation only the first odd input channel of the pair should be wired NOTE The Low Z and High Z options are still available in bridge mono mode If the amplifier outputs are configured for bridge mono operation and the High Z option is selected the amplifier will produce 140Vrms with 70V selected or 200Vrms with 100V selected Figure 28 Bridge mono configuration Figure 29 DSP ...

Page 26: ...gh Z Low Z Operation Each amplifier output channel can be configured for high Z or low Z operation from the Amplifier Mode Settings window see Figure 30 Global Channel Specific Figure 30 Low Z High Z configuration NOTE The 70Vrms 100Vrms setting is global and affects all output channels configured for high Z operation ...

Page 27: ...his opens the Input Configuration panel where the amplifier input levels can be adjusted to accommodate different signal levels from the sources The meters on this panel display both peak and rms levels The Gain Mode setting maximum analog input level for the amplifier can also be set here which will affect all analog input channels Figure 31 Input Configuration panel TIP To maximize the signal to...

Page 28: ...faster development of third party and user tunings and libraries encouraging more people to develop custom or third party tunings Single panel access to all required tuning parameters making it easier and faster to create modify tunings Speaker Tuning Panel To open the Basic Speaker Tuning panel double click the Speaker Tuning icon for the desired channel from the Configuration panel see Figure 32...

Page 29: ...Advanced Speaker Tuning panel The Advanced Speaker Tuning panel includes every parameter implemented in a speaker tuning All parameters from the Basic Speaker Tuning panel Recall Store Delete Mfr Name Model Band Crossover Filters HP lower band edge LP upper band edge 18 types up to 48 dB oct EQ Filters 8 second order filter sections 11 types full parametric control LevelMax Limiter Suite Peak RMS ...

Page 30: ...eters on the last panel closed are saved to the working library JBL Master Screen Array Library This library is included with Audio Architect at install The tunings in this library were developed and validated against previous same tunings for Crown DSI amplifiers These tunings are read only to prevent overwrite At any time you can load this library to access reference tunings for JBL Screen Array...

Page 31: ...udio Architect Windows XP path C Documents and Settings All Users Application Data Harman Professional Audio Architect Library Filename Conventions The file naming convention for speaker tuning libraries is as follows Working Library Crown Library DCi Series SpeakerTuning JBL Master Screen Array Library JBL Master Screen Array Library DCi Series SpeakerTuning User Libraries Any_user_file_name DCi ...

Page 32: ...needed This drastically cuts setup time commissioning rack space and costs The DCi DA DSP can be monitored and controlled via the network using a computer running Audio Architect Some applications for this DSP are Configure signal flow Optimize system gain structure Configure speaker configurations set the drive levels frequency bands delays and limiting for your particular speakers Configure EQ f...

Page 33: ...he signal level for each channel Mute Buttons Use these buttons to mute each channel Link Buttons These buttons can be used to link the controls of channels for ganged operation Input Signal Level Meter The measurement range of these input meters is from 0 dBFS to 40 dBFS with 0 5 dB resolution Each audio channel has the following monitors Switched audio input this meter shows only the switched se...

Page 34: ... fault state indicating service may be required Arrow Button Clicking this button expands or minimizes the Configuration panel window Mode Button Clicking this button opens the Amplifier Mode Settings panel where inputs and outputs can be configured for the application Channel DSP Icons Double clicking any of these icons will open the corresponding DSP control panel where DSP settings can be edite...

Page 35: ... the audio input from the Dante port on the back panel of the amp Each amplifier has 8 Dante input channels as well as summed variants e g Dante Inputs A B Dante Inputs C D etc Network With Analog Backup With this option selected the input takes the network signal as its source when the network signal or clock is present If the network lock is lost the input switches to the selected analog source ...

Page 36: ...s the following additional parameters Threshold This parameter sets the level in dB below which the secondary source will be engaged Attack This parameter determines the time that it takes for the secondary source to engage This can range from 0 1 second to 1 0 second Release This parameter determines the time that it takes for the primary source to re engage once the threshold level is exceeded D...

Page 37: ...igure 40 Delay panel On Button This button turns the delay on or off Slider and Arrow Buttons Click drag this slider or click the arrow buttons at either end of the slider to adjust delay time Seconds Field Use this field to enter delay time in seconds by clicking and entering the desired value or clicking the up down buttons Feet Field Use this field to enter delay time in feet by clicking and en...

Page 38: ...eak using the Q parameter HP EQ 2nd Order 6 12dB oct filter with variable resonant peak using the Q parameter All Pass 1 90º phase shift All Pass 2 180º phase shift Frequency This field sets the center corner frequency of the selected band Gain This field sets the amount of gain boost cut applied to the selected band Each filter band has up to 24 dB of gain Slope This field is only available on sh...

Page 39: ...m a single panel Filter Enable Buttons These buttons are used to enable disable the highpass and lowpass filters for the selected band Filter Type Fields These fields are used to select the filter type for each highpass lowpass filter The following filter types are available Bessel 12 dB oct 18 dB oct 24 dB oct 30 dB oct 36 dB oct 42 dB oct 48 dB oct Butterworth 12 dB oct 18 dB oct 24 dB oct 30 dB...

Page 40: ... dB Note that the Advanced option must be selected to adjust these parameters manually Transducer Thermal Limiting Thermal Voltage and Thermal Response Time The transducer thermal limiter limits the long term output power of the amplifier to what the loudspeaker load can handle without overheating and going into thermal compression You can set the voltage level at which the thermal limiter engages...

Page 41: ...rimary and the other is the Secondary When using only two Dante devices the devices can be connected directly together using the Primary ports When connecting more than two devices they should be connected to an Ethernet switch using a star networking topology Fault Tolerance Dante audio traffic is duplicated to both the Primary and Secondary Dante ports The Secondary port can be connected to a se...

Page 42: ...he device and indicate the following Green LEDs The green LED will light solid to indicate a network link is established and flash to indicate link activity Orange LEDs The orange LED indicates network connection speed off 10 100Mbps on 1 Gbps Routing Dante The DCi DA amplifiers can use both analog and or Dante inputs All Dante routing must be initially configured using Audinate s Dante Controller...

Page 43: ...el and Polarity settings located in the Input Configuration panel see Figure 44 on page 38 before being sent to the Dante network 2 Post processed audio from an amplifier output channel can be routed to one of the 8 available Dante outputs NOTE The post processed output audio is bussed from a point at the end of the amp s signal processing chain This is effectively analogous to taking the audio fr...

Page 44: ...r Presets The DCi DA amplifier works with two types of presets User Presets Using Audio Architect you can create your own custom DSP presets label them and send them to the DCi DA amplifier The amp stores those presets in firmware Downloadable Presets Available for download from a variety of manufacturers these presets are configured for optimal performance and can be sent to the amplifier via Aud...

Page 45: ... in the current venue configuration to a single file for backup and recall To save a Venue file in Audio Architect 1 In the upper left hand corner of the main Audio Architect window select the File tab and then select Save or Save As from the menu 2 Select the desired location on the hard drive name the file and then click the Save button To open a Venue file in Audio Architect 1 In the upper left...

Page 46: ...r troubleshooting purposes or by individual devices to perform certain operations Figure 47 The Event Log Viewer window The Event Log can be accessed from either the Offline ribbon Figure 48 or Online ribbon Figure 49 Figure 48 Accessing the Event Log from the Offline ribbon Figure 49 Accessing the Event Log from the Online ribbon For more information about the Event Log and editing Event Log sett...

Page 47: ...ditionally outputs can be controlled independently via the software Control port pinout descriptions PIN 1 Output 1 0VDC to 3 3VDC output Output impedance 1KΩ pullup to 3 3V PIN 2 Output 2 0VDC to 3 3VDC output Output impedance 1KΩ pullup to 3 3V PIN 3 Input 1 0VDC to 3 3VDC input Logic TTL thresholds Analog full scale 0 3 3V Input impedance 20KΩ PIN 4 3 3VDC output LIMIT 30mA Output impedance 100...

Page 48: ...set Recalls the max preset in the high state and the min preset in the low state available only when a device preset is assigned to a control input On Value This option determines what the value of the assigned parameter will be when the Control port input is logic high available only when Direct Action mode is selected Off Value This option determines what the value of the assigned parameter will...

Page 49: ...ctable and the On Value and Off Value parameters can be toggled as desired However if a non binary SV is added the Analog Input mode becomes available In this mode the High Limit and Low Limit parameters become available instead The High Limit and Low Limit parameters allow control of an SV over a specified range TIP Additional SV s can be added to a given control input by selecting the SV and dra...

Page 50: ... does not change quickly it can take up to 60 seconds to drop offline or to recover In these modes the output is intended to be used with devices such as a backup amp switcher or an electro mechanical system Therefore it is desirable to prevent this output from toggling on off quickly It may take the output up to 90 seconds to recover i e switch states from an error or loss of connection Control P...

Page 51: ...DA Series Operation Manual Using the GPIO Port Figure 55 Control Port output configuration NOTE In all modes the polarity of the binary output can be toggled under the Output Polarity tab where Normal or Inverted can be selected ...

Page 52: ...configuration and begin to output audio within 20 seconds Network communication will be re established once the network interface card boots While the amplifier is in standby the front panel Power button is disabled and if pressed the blue Power indicator will blink twice to indicate the device is in standby AUX CLASS 2 WIRING GPIO ETHERNET100Mb ACT DANTE OUT 3 3V IN PRIMARY SECONDARY CE THE RISK ...

Page 53: ... high Z operation AC Under Over Voltage Protection If the AC line voltage drops below 10 or rises above 10 of the nominal operating voltage of the amplifier the amplifier s power supply will turn off and the blue Power LED will flash The amplifier will turn back on when the AC line voltage returns to a safe operating range Breaker The DCi 4 1250DA and 8 600DA models use a resettable breaker Please...

Page 54: ...Aux port is released When the Power button is pushed in this condition the Power Indicator will flash for 2 3 seconds CONDITION Thermal indicator is on POSSIBLE REASON The amplifier is becoming too hot for safe operation Allow the amplifier to cool Check for loads less than 2Ω or less than 4Ω in bridge mono mode and for excessive input levels Check for proper ventilation and proper output mode dua...

Page 55: ...mixer or preamp CONDITION No sound even though the amp has power Power LED is on not flashing and the amp is receiving an input sig nal Signal indicator is flashing POSSIBLE REASON Speakers not connected Open circuit due to speaker failure Based on the front panel LEDs determine which channel has a short Remove the associated input connector to ensure that no voltage will be present on the output ...

Page 56: ...put signal The Signal LED is not flashing even though audio is present and the channel is ready POSSIBLE REASON Input signal level is very low CONDITION Bridge LED is lit POSSIBLE REASON Amplifier is in bridge mono mode Off Flashing On above means that the LED can be off flashing or on ...

Page 57: ...page 53 DriveCore Install DA Series Operation Manual Signal Path Block Diagram Signal Path Block Diagram Figure 60 Signal Path Block Diagram ...

Page 58: ... 600W 600W 4 600DA 600W 1200W 1200W 1200W 1200W 4 1250DA 2500W 2500W 2500W 2500W 2500W 8 300DA 300W 600W 600W 600W 600W 8 600DA 600W 1200W 1200W 1200W 1200W Minimum Guaranteed Power 20Hz 20kHz Input Sensitivity DCi Dante Model 8Ω 70Vrms 100Vrms 4 300DA 1 0Vrms 1 4Vrms 2 0Vrms 4 600DA 1 4Vrms 1 4Vrms 2 0Vrms 4 1250DA 2 0Vrms 1 4Vrms 2 0Vrms 8 300DA 1 0Vrms 1 4Vrms 2 0Vrms 8 600DA 1 4Vrms 1 4Vrms 2 ...

Page 59: ...0Hz 1000 1000 1500 1000 1000 Crosstalk below rated power 20Hz to 1kHz 80 dB Common Mode Rejection 20Hz to 1kHz typical 70 dB DC Output Offset with inputs shorted 10mV Input Impedance Nominally balanced nominally unbalanced 10 kΩ 5 kΩ Maximum Input Level Low Gain Mode 20 dBU Required AC Mains 10 100Vrms 240Vrms 50 60Hz Cooling Continuously variable speed forced air front to back airflow Power Suppl...

Page 60: ... Pink Noise Typical of program material at extreme clip 4Ω 3 2 190 650 164 1 7 185 630 159 8Ω 5 2 205 699 176 2 6 194 664 167 16Ω 4 9 171 583 147 2 5 168 575 145 140V 32 67Ω 4 7 157 535 135 2 4 153 523 132 200V 66 67Ω 4 8 148 507 128 2 5 146 498 125 DCi 4 300DA Dual Mode 120VAC 60Hz 230VAC 50Hz Condition Load Line current amps Power Dissipated as Heat Line current amps Power Dissipated as Heat wat...

Page 61: ... of program material at extreme clip 4Ω 5 6 247 844 213 2 9 235 801 202 8Ω 9 5 298 1018 257 4 8 269 916 231 16Ω 8 7 223 760 192 4 5 207 705 178 140V 16Ω 8 7 230 786 198 4 5 214 730 184 200V 33 33Ω 8 7 203 692 174 4 4 176 601 151 DCi 4 600DA Dual Mode 120VAC 60Hz 230VAC 50Hz Condition Load Line current amps Power Dissipated as Heat Line current amps Power Dissipated as Heat watts BTU kcal hr watts ...

Page 62: ...program material at extreme clip 4Ω 19 5 533 1819 458 10 0 419 1432 361 8Ω 17 5 384 1311 330 9 5 414 1412 356 16Ω 17 5 365 1246 314 9 0 292 997 251 140V 8Ω 16 8 330 1128 284 8 8 345 1176 296 200V 16Ω 17 1 334 1139 287 9 0 291 991 250 DCi 4 1250DA Dual Mode 120VAC 60Hz 230VAC 50Hz Condition Load Line current amps Power Dissipated as Heat Line current amps Power Dissipated as Heat watts BTU kcal hr ...

Page 63: ...ram material at extreme clip 4Ω 6 5 357 1220 308 3 3 335 1144 288 8Ω 10 0 377 1287 324 5 2 369 1259 317 16Ω 9 5 313 1069 269 4 8 305 1041 263 140V 32 67Ω 9 4 296 1011 255 4 8 279 951 240 200V 66 67Ω 9 2 287 979 247 4 8 273 932 235 DCi 8 300DA Dual Mode 120VAC 60Hz 230VAC 50Hz Condition Load Line current amps Power Dissipated as Heat Line current amps Power Dissipated as Heat watts BTU kcal hr watt...

Page 64: ...rial at extreme clip 4Ω 10 8 468 1597 403 5 4 445 1519 383 8Ω 17 9 530 1810 456 9 0 476 1625 410 16Ω 17 0 421 1437 362 8 7 389 1328 335 140V 16Ω 17 3 439 1500 378 8 8 382 1305 329 200V 33 33Ω 17 0 412 1407 355 8 6 342 1168 294 DCi 8 600DA Dual Mode 120VAC 60Hz 230VAC 50Hz Condition Load Line current amps Power Dissipated as Heat Line current amps Power Dissipated as Heat watts BTU kcal hr watts BT...

Page 65: ...our factory within a reasonable time after receipt of the defective product at our authorized service center or our factory All expenses in remedying the defect including surface shipping costs in the United States will be borne by us You must bear the expense of shipping the product between any foreign country and the port of entry in the United States including the return shipment and all taxes ...

Page 66: ...th the defective unit to an authorized service center to obtain service They will handle the necessary paperwork and repair Remember to transport the unit in the original factory pack A list of authorized service centers in your area can be obtained from Crown Factory Service or online from www crownaudio com en support service_lookup Factory Service Crown accepts no responsibility for non service...

Page 67: ...all carton that allows for 2 inch solid Styrofoam on all six sides of unit or 3 inches of plastic bubble wrap on all six sides of unit b Securely seal the package with an adequate carton sealing tape c Do not use light boxes or peanuts Damage caused by poor packaging will not be covered under warranty Enclose the completed Service Return Authorization Request or securely attach it to the outside o...

Page 68: ..._____________________________ ________________________________________________________________________________________________________________________ ________________________________________________________________________________________________________________________ Other equipment in your system _________________________________________________________________________________________________...

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