Infinity-BasslinkT-sub-sm 维修电路原理图.pdf

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1、 BassLink T Powered Subwoofer System SERVICE MANUAL Infinity Systems, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev0 7/2004 RadioFans.CN 收音机爱 好者资料库- CONTENTS - SPECIFICATIONS .1 CONNECTIONS/APPLICATIONS.2 CONTROLS AND FUNCTIONS.5 BASIC TROUBLESHOOTING.6 EXPLODED VIEW/PARTS LIST7 DISASSEMB

2、LY PROCEDURE.8 AMPLIFIER BLOCK DIAGRAM.9 ELECTRICAL PARTS LIST . 10 P.C.B. DRAWINGS.14 IC/TRANSISTOR PINOUTS. 19 SCHEMATICS.23 PACKING.26 Basslink T Specifications Output Power (14.4V supply) 250W RMS Type of Amplifer AB Frequency response: 20Hz 120Hz Maximum input signal: 4.0V Maximum sensitivity:

3、50mV to 4V Line-level input 1V to 16V High-level input Input Impedance 20K Idle Current 100dB (A-weighted ref to full power) Crossover Type Fixed LP 12dB per octave Crossover Range Variable 70 170 Hz Min Current Draw (Idle) 1.13A Remote Current Draw 30mA Max Current Draw 26A DC Offset 30mV Bass Boos

4、t -6dB to +3dB 40Hz Auto Turn-On 2 -10min (Time to turn Off) Operating Voltage 10 16 VDC Dimensions: 40 3/8 x 6 7/16 x 14 3/8” (L x W x D) (1026mm x 164mm x 366mm) Fuse: 30A Infinity continually strives to update and improve existing products, as well as create new ones. The specifications and detai

5、ls in this and related JBL publications are therefore subject to change without notice. BassLink T BassLink T 1RadioFans.CN 收音机爱 好者资料库 Connect power to BassLink T, as shown in Figure 6. Also observe these installation tips:Use at least #10 AWG wire for the +BATT (+12 Vdc) and GND (ground) connection

6、s. Ifneeded, use at least a #20 AWG wire for theREM (remote) connection.Route all power wires through a grommet in the vehicles firewall. If a factory grommet isunavailable, install one.Connect a short GND wire from BassLink T to the nearest bare metal surface. For a good connection, scrape away pai

7、nt from the metal surface and use a screw with a lock (star) washer.Install a fuse holder with a 25 A fuse within 18 of the batterys positive (+) terminal (seeFigure 6).The REM connection requires +5 to +12 Vdc signal to turn on BassLink T. Most head unitswith preamp outputs provide this remote volt

8、age signal. For speaker-level applications, a remote connection is preferred but notrequired, since BassLink Ts Auto Turn-On feature will sense voltage on the speaker wires to automatically turn on BassLink T.IMPORTANT: To enable BassLink Ts Auto Turn-On feature, set the AUTO TURN-ON switch to the A

9、UTO position (see Figure 12 on page 7). Figure 6. Power connections for BassLink T.POWERCONNECTIONSBassLink T(Control Panel)Fuse 25 APOWER+BATTREMGNDFUSE25AREMOTELEVELCONTROLLINE LEVELINPUTHIGH LEVELINPUT+R+LLR BassLink T BassLink T 2 BassLink T is equipped with two line-level (RCA)inputs and two sp

10、eaker-level inputs. To help you plan your installation, we have included two system applications in Figures 7 and 8 on pages 4 and 5. For more system ideas,see your authorized Infinity car audio dealer.Figure 7. BassLink T audio connections for a headunit with two line-level or subwoofer (RCA) outpu

11、ts.APPLICATIONSPOWER+BATTREMGNDFUSE25AREMOTELEVELCONTROLLINE LEVELINPUTHIGH LEVELINPUTAUTOTURN ONPHASEGAINCROSSOVERBASS BOOSTAUTOOFF1800+R+LLR BassLink T BassLink T 3 Figure 8. BassLink T audio connections for a headunit equipped with two speaker-level outputs. APPLICATIONS(CONTINUED)POWER+BATTREMGN

12、DFUSE25AREMOTELEVELCONTROLLINE LEVELINPUTHIGH LEVELINPUTAUTOTURN ONPHASEGAINCROSSOVERBASS BOOSTAUTOOFF1800+R+LLR BassLink T BassLink T 4BassLink T provides several controls and indica-tors that simplify sonic integration with virtuallyany vehicles unique acoustic properties. They arelocated on the t

13、op control panel, as shown inFigure 12.GAIN Control: Use this control to adjust the relative volume (loudness) of BassLink T withrespect to the other speakers in the vehicle.CROSSOVER: Use this control to adjust theamount of high-frequency information present inBassLink Ts output. A lower value mean

14、s more ofthe high frequencies are filtered out. BASS BOOST: Use this control to correct any perceived peak or dip in the bass response (typically around 40Hz in most vehicles). Set thecontrol to any value between 6dB and +3dB,according to your preference.PHASE Control: Use this switch to reverse the

15、phase of BassLink Ts output with respect to itsinput. Choose the position (0 or 180) thatsounds the best.Figure 12. BassLink T control panel. NOTE: Depending on BassLink Ts orientation andlocation in a vehicle, reversing the phase may (or may not) increase or decrease the amount of perceived upper b

16、ass being reproduced. AUTO TURN-ON: For speaker-level connections,use this switch to activate (or deactivate)BassLink Ts automatic turn-on circuit.REMOTE LEVEL CONTROL: Use this RJ11 jack to connect the Remote Level Control (see page 6).PEAK LED:This indicator glows red when thesubwoofer is at maxim

17、um output. Be sure tomonitor this indicator during BassLink T setup(see Tuning BassLink T). When properly tuned,the PEAK LED should light momentarily duringhigh-level bass transients. Avoid adjustmentsthat cause the PEAK LED to remain lit for extended periods.POWER LED:This indicator will glow blue

18、whenBassLink T is operational.CONTROLS ANDFUNCTIONS1. Unplug the RJ11 cable that connects theRemote Level Control to BassLink T. 2. Make sure the head unit is off and its volumecontrol is set to minimum. 3. On BassLink Ts top panel, initially set all controls to their midpoint positions, as shownin

19、Figure 12. On BassLink Ts top panel, initially set PHASE to 0 .4. Turn on the head unit and play a favoritemusic track that has substantial bass. Set thehead units volume control to 75 percent ofthe total output (approximately 3 oclock onrotary controls). 5. Adjust the GAIN control clockwise until t

20、hePEAK LED (on BassLink Ts top panel) beginsto flash with each bass note but doesnt staylit continuously.6. Listen to your system, making a mental note of the amount of upper bass being reproduced.7. Switch the PHASE control to 180 and listenagain for upper bass content. There may bemore upper bass,

21、 less upper bass, or nochange at all. The position that provides themost upper bass is correct, but choose eithersetting according to your taste.8. Adjust the CROSSOVER control clockwise or counterclockwise until you hear only low-frequency information. For example, youshould NOT hear any vocals com

22、ing fromBassLink T when seated in the normal listening position. 9. Adjust the BASS-BOOST control clockwise or counterclockwise to suit your taste. 10. Recheck the PEAK LED to make sure its flashing in time with the bass but is not lit continuously. If it is lit continuously, adjust the GAIN control

23、 counterclockwise until thePEAK LED only flashes.11. Reconnect the RJ11 cable between the RemoteLevel Control and BassLink T. You may thenuse the Remote Level Control to adjust thelevel of the bass to suit your taste and/or different program material.NOTE: In most cases, the above steps will provide

24、satisfactory tuning. However, the actual processmay require several readjustments of each control,since the settings will interact with each other. If necessary, consult your authorized Infinity car audio dealer for help in tuning your system.TUNINGBASSLINKTPOWER+BATTREMGNDFUSE25AREMOTELEVELCONTROLL

25、INE LEVELINPUTHIGH LEVELINPUTAUTOTURN ONPEAKPHASEGAINCROSSOVERBASS BOOSTAUTOOFF1800+R+LLR BassLink T BassLink T 5PROBLEM:POWER LED is not lit. CAUSES and SOLUTIONS:1. Fuse is blown and needs replacement.2. Head unit is not functioning properly. Checkremote voltage, and power, ground or remoteconnect

26、ions.PROBLEM:POWER LED is lit but there is no bass.CAUSES and SOLUTIONS:1. Inputs are not connected. Check connections.2. Head-unit fader control is not set properly.Adjust head-unit fader control to feed audiosignals to BassLink T.PROBLEM:BassLink T sounds muddy or distorted.CAUSES and SOLUTIONS:1.

27、 Gain is set too high and PEAK LED is lit constantly. Readjust GAIN control (see Tuning BassLink T on page 7). 2. Bass is set too high. Readjust BASS BOOSTcontrol (see Tuning BassLink T on page 7).3. Head-unit output is distorted or blown. Seeyour authorized Infinity car audio dealer.PROBLEM:No outp

28、ut from BassLink T when head-unit fader control is set to front or rear.CAUSE and SOLUTION:Input connections are improperly wired. Verify all connections (see Applications, starting onpage 4).PROBLEM:BassLink T turns on before head unit is completely on and produces a “thump” sound.CAUSE and SOLUTIO

29、N:For speaker-level connections, BassLink T isreceiving a false turn-on signal. On BassLink Tstop panel, slide AUTO TURN-ON to OFF and usethe Remote (REM) connection. PROBLEM:BassLink Ts POWER LED remains on after headunit is turned off.CAUSE and SOLUTION:For speaker-level connections, this is norma

30、loperation when AUTO TURN-ON is set to ON.BassLink T will remain on another 5 to 10 minutesafter sensing that audio signals are not presentbefore shutting down.PROBLEM:BassLink T produces a loud humming noise withthe system OFF when using speaker-level inputs. CAUSE and SOLUTIONS:This problem is cau

31、sed by a feedback loopbetween your speakers and the high-level inputsof BassLink T. Choose one of the following solutions:1. Connect a wire from the REMOTE terminal onBassLink T to the remote turn-on of your headunit or to the vehicles accessory circuit. On thecontrol panel, slide the AUTO-ON switch

32、 to theOFF position.2. Connect the supplied capacitors between each of the speaker outputs of the head unit and the speakers positive lead. Connect each positive lead of BassLink Ts high-level inputsto the head-unit side of the capacitors. Use one capacitor per speaker input channel.Figure 10. Conne

33、cting supplied capacitors. TROUBLESHOOTINGCapacitor+ Speaker wire from head unitTo + speaker-levelinput on BassLink TTo + speaker lead BassLink T BassLink T 6 Ref # Part Number Description Qty 1 329-000-05012-0BA Front grille 2 2 329-100-05013-0BA Grille assy 1 3 321-FE-05006-0BA Bracket stand 2 4 2

34、43-100-05017-0BA Front cabinet 1 5 333-EVA-05024-0BA EVA gasket 1 6 323-AL-05016-0BA Heatsink extrusion 1 7 309-ABS-05005-0BA Control Cover Assy 1 8 352-DM3219C376 Screw 12 9 352-FE-05014-0LA U-bracket 1 10 352-AM04014C326 Screw 2 11 PR-255007 10” passive driver 2 12 F25X12PR-01DW 10” woofer 1 13 35

35、5-L06025 Spring washer m4 24 14 352-AM04014C326 Screw 4*14 24 15 336-EVA-05045-0BA EVA gasket 2 16 352-AM03010D065 Screw 6 17 011-7525-00488 Trunk sub amp 1 18 333-EVA-05026-0BA EVA gasket 1 19 051-B00488B Jack tone pcb assy 1 20 352-GM03010F055 Screw 8 21 309-ABS-05002-0BA Sealing cover assy 1 22 3

36、33-EVA-05023-0BA EVA gasket 1 23 247-100-05011-0BA Rear cover 1 24 352-HM04016B190 Screw 34 25 351-HM04010A217 Machine screw 2 26 315-PC-05019-0TA PC trim plate 1 27 315-PC-05020-0TA PC trim plate 1 28 327-010-05000-0BA Door latch 1 29 316-ABS-05006-0BA Infinity logo 1 30 352-AM03010D065 Screw 3 31

37、351-AM03008A079 Machine screw 3 32 352-AM02010D006 Screw 2 33 333-EVA-05021-0BA EVA gasket 1 7BASSLINK T EXPLODED VIEW Basslink T Basslink T DISASSEMBLY PROCEDURE FOR BASSLINK T (ACCESS TO AMPLIFER, DRIVERS) 1) On a protected work surface, stand the unit up so the back panel is facing you. 2) Remove

38、 the (12) Phillips screws holding the black heatsink to the enclosure. Do not remove the heatsink at this time. 3) Remove the (36) Phillips screws holding the back panel to the main enclosure. Note in the area of the heatsink, two screws are shorter, machine screws. 4) Carefully separate the back pa

39、nel from the main enclosure; try not to damage the O-ring that may be adhered to both sides of the enclosure, preventing its separation. Note the LED wires from the heatsink area routed to the amplifier; unplug the 2 lead connection at female connector M2 on the amplifier. Set the heatsink and LED w

40、/ wires aside. 5) Unplug the woofer wires from the terminals. 6) Completely separate the two enclosure halves. SERVICING THE INPUT/PREAMP SECTION 7) Remove the (8) Phillips screws holding the cover plate to the enclosure. 8) With a wood chisel or similar tool, carefully pry the plastic cover away fr

41、om the cup, working around the perimeter, until the cover is detached. If the cover is damaged during this procedure, order part# 309-ABS-05002. REASSEMBLY 9) If the cover to input/preamp section was detached, apply a bead of silicon sealer or similar adhesive around the perimeter of the cover, in t

42、he sealing groove. Without this adhesive, there may be an air leak which would affect performance. Press the cover into place. 10) Attach the woofer wires. 11) Before the enclosure can come together, connecting the heatsink/LED wire presents a challenge if not correctly done. The LED wire must threa

43、d through the enclosure, the small hole in the aluminum heatsink plate, and back into the M2 connector on the amplifier. The position in which this is best achieved is with Basslink T laying flat side down on a surface, woofer side up. Partially bring the enclosure halves together, and work through

44、the remaining gap near the heatsink end. See illustration. 12) Make sure the O-ring around the perimeter of the enclosure is intact and in place. Make sure the two shorter machine screws are used in the back panel, in the area near the heatsink. 13) Replace all enclosure and heatsink screws. BassLin

45、k T BassLink T 8 BassLink T BassLink T 9BASSLINK T Electrical Parts List Part NumbersDescriptionReference DesignatorsPOWER SUPPLY/AMPLIFIER PCBResistors110- 12102j52resistor 1K 1/2W 5% 52mm RX1110- 14000j26resistor 0 1/4W 5% 26mm R525,530110- 16000j26resistor 0 1/6W 5% 26mm D603110- 16100j26resistor

46、 10 1/6W 5% 26mm R521,523,613,500110- 16102j26resistor 1K 1/6W 5% 26mm R519,541,542,502,560,629,605110- 16103j26resistor 10K 1/6W 5% 26mm R285,294,508511,540,611,507,612,616,621,622,623,625,626,627,600,601,604,606110- 16104j26resistor 100K 1/6W 5% 26mm R517,618,624,603110- 16105j26resistor 1M 1/6W 5

47、% 26mm R422,420110- 16106j26resistor 10M 1/6W 5% 26mm R421110- 16122j26resistor 1.2K 1/6W 5% 26mm R295110- 16123j26resistor 12K 1/6W 5% 26mm R234,513110- 16152j26resistor 1.5K 1/6W 5% 26mm R550110- 16154j26resistor 150K 1/6W 5% 26mm R80A110- 16182j26resistor 1.8K 1/6W 5% 26mm R74A110- 16183j26resist

48、or 18K 1/6W 5% 26mm R274110- 16204j26resistor 200K 1/6W 5% 26mm R237110- 16220j26resistor 22 1/6W 5% 26mm R526,527,528,529110- 16221j26resistor 220 1/6W 5% 26mm R76A,424,501110- 16222j26resistor 2.2K 1/6W 5% 26mm R228,515110- 16223j26resistor 22K 1/6W 5% 26mm R254,287,628,602110- 16333j26resistor 33

49、K 1/6W 5% 26mm R277,614110- 16393j26resistor 39K 1/6W 5% 26mm R631110- 16432j26resistor 4.3K 1/6W 5% 26mm R505110- 16433j26resistor 43K 1/6W 5% 26mm R503110- 16471j26resistor 470 1/6W 5% 26mm R510,522,524110- 16472j26resistor 4.7K 1/6W 5% 26mm R275,276,520110- 16473j26resistor 47K 1/6W 5% 26mm R77A,

50、257,273,290,14A110- 16474j26resistor 470K 1/6W 5% 26mm R278110- 16511j26resistor 510 1/6W 5% 26mm R256,286110- 16512j26resistor 5.1K 1/6W 5% 26mm R514110- 16562j26resistor 5.6K 1/6W 5% 26mm R238,518,630110- 16681j26resistor 680 1/6W 5% 26mm R504,509110- 16682j26resistor 6.8K 1/6W 5% 26mm R516,77C110