VIZIO DA-250F CU User's Manual
Contents
1. Eg QM gt o 3 Power amplifiers lt Ut gts 5 units QR gF 8 5 de qe gts o DIDI QE Ui gt gts Power amplifiers QE 5 units Qe o PE pE GEB VES Perforated panel _____ Robust structure is of the unit s main features However if the strength is particularly needed when installing the unit in the rack use a supporting runner for the safety purposes 10 size 44 5 mm or 1 75 reference size 7 NOMENCLATURE AND FUNCTIONS Front CH 3 BRIDGE 2 p 1 Power switch OFF Turning this switch on causes the amplifier to function and turning it off causes the amplifier to cease function Note The unit is not completely disconnected from the power supply even if this Power switch is turned off 2 Power indicator POWER Lights blue when the Power switch 1 is turned on 3 Input level controls CH 1 BRIDGE 1 CH 2 CH 3 BRIDGE 2 CH 4 Adjust the input level of each channel Turn the control clockwise to increase the input level and counterclockwise to decrease the level When a bridge connection is made When Channels 1 and 2 are bridge conne2. Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help This Class A digital apparatus complies with Canadian ICES 003 Cet appareil num rique de la classe A est conforme la norme NMB 003 du Canada 2 SAFETY PRECAUTIONS Before installation or use be sure to carefully read all the instructions in this section for correct and safe operation Be sure to follow all the precautionary instructions in this section which contain important warnings and or cautions regarding safety After reading keep this manual handy for future reference Safety Symbol and Message Conventions Safety symbols and messages described below are used in this manual to prevent bodily injury and property damage which could result from mishandling Before operating your product read this manual first and understand the safety symbols and messages so you are thoroughly aware of the potential safety hazards AN WARNING CAUTION Indicates a potentially hazardous situation which if mishandled could result in death or serious personal injury Indicates a potentially hazardous situation which if mishandled could result in moderate or minor personal injury and or property damage A WARNING When Installing the Unit Do not expose
3. 20 000 Hz HPF OFF 0 196 1 kHz 0 396 100 20 000 Hz HPF ON Protection Circuit Protection against excessive current flow due to overload short circuit unusual DC voltage output temperature rise at power amp heat sink over 110 C or 230 F temperature rise inside the unit over 80 C or 176 F S N Ratio 100 dB A weighted Crosstalk 70 dB A weighted LED Indicator Power blue x 1 Input green x 4 Output yellow x 4 Peak red x 4 Protect red x 4 Cooling Forced air cooling Operating Temperature 10 C to 40 C 14 F to 104 F Operating Humidity Under 9096 RH no condensation Finish Panel Aluminum black alumite Case Plated steel sheet Dimensions 482 x 44 x 401 8 d mm 18 98 x 1 73 x 15 82 Weight 0 dB 0 775 V 6 6 kg 14 55 Ib Note The design and specifications are subject to change without notice for improvement Accessories Power cord 2 m or 6 56 ft Removable terminal plug 3 pins 4 Tamper proof cap URL http www toa jp Z Corporation
4. CH2 CH3 Speaker output terminals CH4 CH3 CH2 CH1 O e OOOO O BRIDGE 1 DA 250F DA 250FH BRIDGE 2 CH 1 mode 4 80 19 60 19 60 19 60 19 60 BRIDGE 1 BRIDGE 2 BRIDGE 1 CH 1 mode DA 250F DA 250FH 80 39 20 80 39 20 Speaker output terminals BRIDGE 1 55 5 BRIDGE 2 BRIDGE 1 1 mode DA 250F DA 250FH 80 39 20 80 39 20 Speaker output terminals CH2 CH1 5 BRIDGE 1 9 DA 250F DA 250FH BRIDGE 2 BRIDGE 2 O DE dE 4 80 1960 4 80 19 60 80 39 20 Speaker output terminals CH4 CH3 BRIDGE 1 BRIDGE 2 CH 1 mode DA 250F DA 250FH 39 2 0 1960 19 60 11 12 1 input 3 outputs 1 Speaker output terminals CH2 CH1 1 1 H1 Sp Q elei DA 250F DA 250FH CH2 BRIDGE 2 BRIDGBE
5. Step 1 Turn off this unit s Power switch Step 2 Set the BRIDGE ON OFF switches and CH 1 mode ON OFF switch Step 3 Connect the sound source equipment to the Input terminals Note Refer to p 12 for the removable terminal plug connection Step 4 Connect speakers to the Speaker output terminals 4 1 Unscrew the output terminal cover 4 2 Strip 10 mm 0 39 of insulative jacket from the end of the speaker cable as shown in the figure at right 4 3 Connect speaker cables to the output terminals 4 4 Replace the output terminal cover place Be sure to replace the unit s terminal cover after connection completion NWARNING Because high voltage is generated at the speaker output terminals never touch these terminals to avoid electric shock DA 250FH only 8 1 Switch Settings and Speaker Connections 4 inputs 4 outputs factory preset Sseskercutouttenninals CH4 CH3 CH2 CH1 CH1 4 de BRIDGE 1 DA 250F DA 250FH CH2 BRIDGE 2 CH2 CH 1 mode 4 80 19 60 CH3 CH3 427 4 80 1960 CH4 4 80 1960 4 80 19 60 1 input 4 outputs CH1 n TN CH1 CH3 CH3 4 CH1 CH1
6. 14 Protection Operation List When the power is switched on this indicator lights for about 2 seconds and then extinguishes ae RIDGE 9 1 9 BRIDGE 2 7 OUTPUTS CLASS 2 WIRING OC ORO o DA 250FH 2 TAS elt 6 AC inlet Connect the supplied power cord to this inlet The socket outlet shall be installed near the equipment and the plug disconnecting device shall be easily accessible 7 Functional ground terminal SIGNAL GND Hum noise may be generated when external equipment is connected to the unit Connecting this terminal to the functional ground terminal of the external equipment may reduce the hum noise Note This terminal is not for protective ground 8 Speaker output terminals with a terminal cover Connect speaker cables to these terminals 9 BRIDGE ON OFF switches BRIDGE 1 BRIDGE 2 ON OFF Used when bridge connecting the unit s Channels 1 and 2 and Channels 3 and 4 See p 10 Settings and Connections 4 channel output mode Set both BRIDGE 1 and 2 switches to OFF factory preset 3 channel output mode Set either BRIDGE 1 or 2 switches to ON When bridge connecting Channels 1 and 2 set BRIDGE 1 switches to
7. CAUTION With the High pass filter jumper socket kept to the OFF position factory preset operating the unit for long periods of time while the Peak indicator is illuminated due to excessive input signal may damage the connected speakers possibly resulting in fire Operating the unit with the High pass filter jumper socket set to the ON position may decrease the possibility of speaker damage or fire due to excessive input signal When a bridge connection is made Perform the same setting for the channels to be used Channels 1 and 2 or Channels 3 and 4 Operating the unit with the different setting may cause unit failure Step 5 Replace the detached top cover 13 14 11 PROTECTION OPERATION LIST Failure Overcurrent due to overload Protection Current limiter activated when impedance drops below the specified value Operation Indicator Peak indicator lights Remove overload Recovery Connecting a correct load automatically restores normal operation Short circuit Current limiter activated Load is disconnected Protection indicator lights Check speakers and lines for short circuit Turn off this unit s Power switch Correct the load then turn on the power Temperature rise at power amp heat sink over 110 C or 230 F Load disconnected Protection indicator lights Temperature rise inside the unit over 80 C or 176 F Built in amplifier unit that cause
8. the unit falls or the unit case breaks If the power supply cord is damaged exposure of the core disconnection etc If it is malfunctioning no tone sounds To prevent a fire or electric shock never open nor remove the unit case as there are high voltage components inside the unit Refer all servicing such as modification inside the unit to qualified service personnel Do not place cups bowls or other containers of liquid or metallic objects on top of the unit If they accidentally spill into the unit this may cause a fire or electric shock Do not insert nor drop metallic objects or flammable materials in the ventilation slots of the unit s cover as this may result in fire or electric shock Do not touch a plug during thunder and lightning as this may result in electric shock CAUTION When Installing the Unit Never plug in nor remove the power supply plug with wet hands as doing so may cause electric shock When unplugging the power supply cord be sure to grasp the power supply plug never pull on the cord itself Operating the unit with a damaged power supply cord may cause a fire or electric shock When moving the unit be sure to remove its power supply cord from the wall outlet Moving the unit with the power cord connected to the outlet may cause damage to the power cord resulting in fire or electric shock When removing the power cord be sure to hold its plug to pull Avoid instal
9. 2O q I 4 80 19 60 Lor 19 60 1 Y 39 20 1 1 input 3 outputs 2 Speaker output terminals aaa oe CH4 CH3 CH1 660960 BRIDGE 1 em i BRIDGE 2 1 mode DA 250FH Lg 16 3920 l CH4 Lg q 19 60 19 60 9 REMOVABLE TERMINAL PLUG CONNECTION Cautions Be sure to use shielded cables for audio signal lines Avoid soldering cable conductor as contact resistance may increase when the cable is tightened and the solder is crushed possibly resulting in an excessive rise in joint temperatures Use cables of AWG 12 24 Cable end treatment Shielded cable 7 mm Slotted screwdriver 2 Tightens Loosens 1 Connector connections Terminal screw Step 1 Loosen the terminal screw then insert the cable Step 2 Retighten the terminal screw Pull on the cable to ensure it is securely connected Removable terminal Earth plug Cold Shielded cable Tip Recommended slotted screwdriver type Screwdriver with blade that is 3 mm 0 12 in width X Bitshape 0 12 ____ 10 INPUT SENSITIVITY AND HIGH PASS FILTER ON OFF SETTINGS The Input sensitivity can be set to 4 dB factory preset or 10 dB for each channel Besides only the DA 250FH employs the High pass filter on each channel which can be set to ON or OFF CAUTION These servicing instructions are for use by qualified personnel only To avoid electric shoc
10. DIAGRAM Unit mm inches 0 89 442 17 4 A 371 14 61 401 8 15 82 X X X 1 Y SERIE 465 18 31 a 482 18 98 18 16 SPECIFICATIONS 16 1 DA 250F CU Power Source 120 V AC 50 60 Hz Amplification system Class D Power Consumption 200 W based on UL CSA standards 1300 W rated output 4 O x 4 850 W rated output 8 O x 4 Input 4 circuits 4 dB 1 23 V input level control in maximum position 10 electronically balanced removable terminal block pins CH 1 mode ON OFF switch ON CH 1 to All ch OFF Each ch Rated Output 4 channels 250 W x 4 4 170 W x 4 8 2 channels BRIDGE 500 W x 2 8 Q M4 screw terminal distance between barriers 8 8 mm 0 35 Frequency Response 20 20 000 Hz 1 dB Total Harmonic Distortion 0 196 1 kHz 0 396 20 20 000 Hz Protection Circuit Protection against excessive current flow due to overload short circuit unusual DC voltage output temperature rise at power amp heat sink over 110 C or 230 F temperature rise inside the unit over 80 C or 176 F S N Ratio 100 dB A weighted Crosstalk 70 dB A weighted LED Indicator Power blue x 1 Input green x 4 Output yellow x 4 Peak red x 4 Protect red x 4 Coolin
11. MPER PROOF CAP ATTACHMENT 14 13 CLEANING THE FILTER ire nr o 15 14 BLOCK DIAGRAMS T4 DA 250F dE Ee EE e Ete Magen 16 14 2 DA 250FEEL RT eter 17 15 DIMENSIONAL DIAGRAM 18 16 SPECIFICATIONS 161 250 CU iiis ete 19 16 2 DA 250FH Lee dee 20 1 IMPORTANT SAFETY INSTRUCTIONS Read these instructions Keep these instructions Heed all warnings Follow all instructions Do not use this apparatus near water Clean only with dry cloth Do not block any ventilation openings Install in accordance with the manufacturer s instructions Do not install near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat Do not defeat the safety purpose of the polarized or grounding type plug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding prong The wide blade or the third prong are provided for your safety If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparat
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13. ON and BRIDGE 2 switches to ON when bridge connecting Channels 3 and 4 2 channel output mode Set both BRIDGE 1 and 2 switches to ON 10 11 Note Be sure to first turn off the Power switch 1 when changing these switch settings CH1 mode ON OFF switch CH 1 TO ALL ON OFF Setting this switch to ON transmits the Channel 1 input signal to all channels CH1 to All ch mode Note that output signal levels can be individually adjusted with each channel s Input level control 3 Setting this switch to OFF factory preset transmits each channel s input signal to each corresponding channel Each ch mode Note Be sure to first turn off the Power switch 1 when changing this switch setting Input terminals INPUTS Electronically balanced inputs of 3 pin removable terminal block type H Hot C Cold E Earth 10 8 SETTINGS AND CONNECTIONS CH 1 mode ON OFF switch BRIDGE 2 ON OFF switch BRIDGE 1 ON OFF switch Rear panel oH3o oUH296 Og e CH 4 CH 3 CH 2 CH 1 al H Ho HCE HOC E HCE CE ae S E i Earth 4 c o BRIDGE 2 CH 1 TO ALL BRIDGE 1 BRIDGE 2 BRIDGE 1 m ON m ON C OUTPUTS CLA 3 2 WIRING C INPUTS J Speaker output terminals with a terminal cover Input terminals Note The figure shows the DA 250F
14. Zu OPERATING INSTRUCTIONS MULTICHANNEL POWER AMPLIFIERS DA 250F CU DA 250FH CU a N Note The figure shows the DA 250F M 2 all pole mains switch with a contact separation of at least 3 0 12 in each pole shall be incorporated in the electrical installation of the building Thank you for purchasing TOA s Multichannel Power Amplifier Please carefully follow the instructions in this manual to ensure long trouble free use of your equipment TOA Corporation TABLE OF CONTENTS 1 IMPORTANT SAFETY INSTRUCTIONS 3 2 SAFETY PRECAUTIONS t ttti tene 4 3 GENERALE DESCRIPTION 6 A FEATURES oe ut a a 6 5 HANDLING PRECAUTIONS 6 6 INSTALLATION PRECAUTIONS 7 7 NOMENCLATURE AND FUNCTIONS EET 8 EET 9 8 SETTINGS AND CONNECTIONS 8 1 Switch Settings and Speaker Connections 10 9 REMOVABLE TERMINAL PLUG CONNECTION 12 10 INPUT SENSITIVITY AND HIGH PASS FILTER ON OFF SETTINGS 13 11 PROTECTION OPERATION LIST 14 12 TA
15. cted BRIDGE 1 ON OFF switch 9 is set to ON the CH 1 BRIDGE 1 level control adjusts the input levels of Channels 1 and 2 In this event the CH 2 level control cannot be used When Channels 3 and 4 are bridge connected BRIDGE 2 ON OFF switch 9 is set to ON the CH S BRIDGE 2 level control adjusts the input levels of Channels 3 and 4 In this event the CH 4 level control cannot be used Note The figure shows the DA 250F 4 Ventilation panel Air Vent A filter is located inside the ventilation panel To clean the filter remove the ventilation panel See p 15 Cleaning the Filter 5 Indicators INPUT OUTPUT PEAK PROTECT The indicators are as follows from left to right Input indicator INPUT Lights green regardless of the input level control setting when an input signal level exceeds about 20 dB Output indicator OUTPUT Lights yellow when an output level exceeds about 1 W at an 8 O load DA 250F or 19 6 O load DA 250FH Peak indicator PEAK Lights red when an output signal clips distortion occurs Note When the Peak indicator lights turn the input level control 3 counterclockwise until its light extinguishes or decrease the input signal level of the connected external device Operating the unit while the Peak indicator remains lit may cause the protection circuitry to be activated Protection indicator PROTECT Lights red when the protection circuitry is activated See p
16. d the failure halted Four indicators of the corresponding channel extinguish Check the unit for correct ventilation and overload Operation automatically returns to normal when the temperature decreases Abnormal DC voltage output Load disconnected Protection indicator lights 12 TAMPER PROOF CAP ATTACHMENT Contact the TOA dealer where the unit was purchased To protect the input level control from accidental operation it is recommended to replace the control knob with the supplied tamper proof cap as illustrated Input level control Tamper proof cap accessory 13 CLEANING THE FILTER Step 1 Turn off this unit s Power switch Step 2 Remove the ventilation panel as shown in the figure Step 3 Detach the filter inside the ventilation panel Step 4 Clear the filter of dust Step 5 Replace the filter and ventilation panel Ventilation Panel Filter Ventilation Panel Detach the panel by pressing on the left or right sides 15 14 BLOCK DIAGRAMS 14 1 DA 250F LNdLNO N9110 uonoejoJd 10 2 1 uous Jeyur JUBUND 01 9 p Jeduunf uonoejes YoUMs 43O NO 39dIH8 04009 1ndui Y HO youms TIV OL L HO LNdLNO q39dIug 91014 Joj ejeq uous Jeyur quen 01 9 p Jeduu
17. ed when power is switched on with any of those controls set to the position other than oo position can impair hearing Do not operate the unit for an extended period of time with the sound distorting Doing so may cause the connected speakers to heat resulting in a fire Contact your dealer as to the cleaning If dust is allowed to accumulate in the unit over a long period of time a fire or damage to the unit may result If dust accumulates on the power supply plug or in the wall AC outlet a fire may result Clean it periodically In addition insert the plug in the wall outlet securely Turn off this units power switch and unplug the power supply plug from the AC outlet for safety purposes when cleaning or leaving the unit unused for 10 days or more Doing otherwise may cause a fire or electric shock The lighting flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons 3 GENERAL DESCRIPTION TOA s DA 250F and DA 250FH Multichannel Power Amplifiers feature high power handling capabilities and durability The DA 250F is configured with 250 W x 4 channels 4 O output and 170 W x 4 channels 8 O output and the DA 250FH features a 250 W x 4 channels 70 V line 19 6 output configuration Besides each model s
18. g Forced air cooling Operating Temperature 10 C to 40 C 14 F to 104 F Operating Humidity Under 9096 RH no condensation Finish Panel Aluminum black alumite Case Plated steel sheet Dimensions 482 x 44 x 401 8 d mm 18 98 x 1 73 x 15 82 Weight 0 dB 0 775 V 6 6 kg 14 55 Note The design and specifications are subject to change without notice for improvement e Accessories Power cord 2 m or 6 56 ft 1 Removable terminal plug 3 pins 4 Tamper proof cap 4 19 16 2 DA 250FH CU Power Source 120 V AC 50 60 Hz Amplification system Class D Power Consumption 200 W based on UL CSA standards 1200 W rated output 70 V line 19 6 O x 4 Input 4 circuits 4 dB 1 23 V input level control in maximum position 10 electronically balanced removable terminal block pins CH 1 mode ON OFF switch ON 1 to All ch OFF Each ch Rated Output 4 channels 250 W x 4 70 V line 19 6 2 channels BRIDGE 500 W x 2 140 V line 39 2 M4 screw terminal distance between barriers 8 8 mm 0 35 Frequency Response 20 20 000 Hz x1 dB HPF OFF 50 20 000 Hz 3 dB 1 dB HPF ON selectable with the inner jumper Total Harmonic Distortion 0 1 1 kHz 0 396 20
19. k do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so Refer all servicing to qualified service personnel Step 1 Remove this unit s power plug from an AC outlet Step 2 Unscrew 8 screws securing the top cover of the unit then detach it Step 3 Change the jumper socket position to 4 dB or 10 dB for the Input sensitivity as illustrated below When a bridge connection is made Set the input sensitivity with the CH1 jumper socket when Channels 1 and 2 are bridge connected Similarly set the input sensitivity with the CH3 jumper socket when Channels 3 and 4 are bridge connected Input sensitivity settings for the CH2 and are disabled Input sensitivity setting When set to 4 dB Factory preset When set to 10 dB Jumper socket Jumper socket 10 dB 4 dB Input Sensitivity 10 dB 4 dB Input Sensitivity Viewed from top with the top cover detached Front panel High When set to OFF Factory preset Jumper socket Step 4 Change the jumper socket position to ON or OFF for the High pass filter as illustrated above DA 250FH only ON position High pass filter ON 12 dB oct cut off frequency 50 Hz OFF position High pass filter OFF N
20. ling the unit in humid or dusty locations in locations exposed to the direct sunlight near the heaters or in locations generating sooty smoke or steam as doing otherwise may result in fire or electric shock To avoid electric shocks be sure to first turn off this unit s power switch when connecting speakers The unit is designed exclusively to be mounted in an equipment rack Be sure to follow the instructions below when rack mounting the unit Failure to do so may cause a fire or personal injury Install the equipment rack on a stable hard floor Fix it with anchor bolts or take other arrangements to prevent it from falling down Be sure to use the screws with a diameter of over 5 mm 0 2 and length of over 12 mm 0 47 to mount the unit When connecting the unit s power cord to an AC outlet use the AC outlet with current capacity allowable to the unit When the Unit is in Use With the High pass filter jumper socket kept to the OFF position factory preset operating the unit for long periods of time while the Peak indicator is illuminated due to excessive input signal may damage the connected speakers possibly resulting in fire Operating the unit with the High pass filter jumper socket set to the ON position may decrease the possibility of speaker damage or fire due to excessive input signal Make sure to set all input level controls to infinity position before power is switched on Loud noise produc
21. located inside the ventilation panel on the unit s front panel If the filter becomes clogged heat will become trapped inside the enclosure Install the unit in locations where the temperature is between 10 and 40 C 14 F and 104 F and the moisture is less than 90 RH no dew condensation must be formed To clean be sure to first turn off this unit s power switch then wipe with a dry cloth When the unit gets very dirty use a cloth damped in a neutral cleanser Never use benzene thinner alcohol or chemically treated cleaning cloth because such volatile liquids could deform or discolor the unit 6 INSTALLATION PRECAUTIONS Rack mounting screws are not supplied with the unit AN CAUTION Be sure to use the screws with a diameter of over 5 mm 0 2 and length of over 12 mm 0 47 to mount the unit Failure to do so may cause personal injury The supplied power supply cord is designed for exclusive use with this unit Never use it with other equipment When mounting the unit in an equipment rack the inside of the rack must be sufficiently ventilated To achieve sufficient ventilation remove all panels on the rear of the rack When mounting the unit in the rack also mount a Perforated Panel larger than 1U in size 1 at the top and the bottom of the rack and 2 above and below every 5 units
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23. output is made available for bridge connection allowing it to be used as a stereo amplifier of 500 W 8 O for DA 250F 140 V line 39 2 O for DA 250FH x 2 channels or a 3 channel amplifier of 500 W 8 250 W 4 x 2 channels for DA 250F 500 W 140 V line 39 2 250 W 70 V line 19 6 Q x 2 channels for DA 250FH Their wide range of applications include stores and permanent sound systems 4 FEATURES e 1U rack mounting 5122 Low power consumption and light weight An input signal to Channel 1 can be routed to all channels and the output level adjusted using the input level control for each channel Electronically balanced inputs Input terminals employ removable terminal blocks to provide maximum connection ease Equipped with the LED indicators that show the input output status etc Built in protection circuitry disconnects the power amplifier s output from the load when a short circuit overload or unusual temperature rise occurs 1U size 44 5 mm or 1 75 reference size 5 HANDLING PRECAUTIONS Keep the input cable away from the output cable If installed close to each other oscillation could occur To avoid unit failures never connect outputs of two or more channels in parallel Only connect speakers with an impedance equal to or greater than those specified Connecting speakers with a smaller impedance than specified could cause damage to the unit Periodically clean the filter
24. the unit to rain or an environment where it may be splashed by water or other liquids as doing so may result in fire or electric shock Use the unit only with the voltage specified on the unit Using a voltage higher than that which is specified may result in fire or electric shock Do not cut kink otherwise damage nor modify the power supply cord In addition avoid using the power cord in close proximity to heaters and never place heavy objects including the unit itself on the power cord as doing so may result in fire or electric shock Be sure to replace the unit s terminal cover after connection completion Because the voltage of up to 140 V is applied to the high impedance speaker terminals never touch these terminals to avoid electric shock DA 250FH only External wiring connected to the terminals marked with requires installation by an instructed person DA 250FH only The apparatus shall be connected to a mains Socket outlet with a protective earthing connection When the Unit is in Use Should the following irregularity be found during use immediately turn off this unit s power switch disconnect the power supply plug from the AC outlet and contact your nearest TOA dealer Make no further attempt to operate the unit in this condition as this may cause fire or electric shock If you detect smoke or a strange smell coming from the unit If water or any metallic object gets into the unit If
25. us Only use attachments accessories specified by the manufacturer 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 over Unplug this apparatus during lightning storms or when unused for long periods of time Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as power supply cord or plug is damaged liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped d FCC REQUIREMENTS Note This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense Reorient or relocate the receiving antenna
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