Infinity-BasslinkT-sub-sm 电路图 维修手册.pdf

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 DISASSEMBLY 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: 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 Boost -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 details in this and related JBL publications are therefore subject to change without notice. BassLink T BassLink T 1 RadioFans.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) connections. If needed, use at least a #20 AWG wire for the REM (remote) connection. Route all power wires through a grommet in the vehicles firewall. If a factory grommet is unavailable, install one. Connect a short GND wire from BassLink T to the nearest bare metal surface. For a good connection, scrape away paint 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 (see Figure 6). The REM connection requires +5 to +12 Vdc signal to turn on BassLink T. Most head units with preamp outputs provide this remote voltage signal. For speaker-level applications, a remote connection is preferred but not required, 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 AUTO position (see Figure 12 on page 7). Figure 6. Power connections for BassLink T. POWERCONNECTIONS BassLink T (Control Panel) Fuse 25 A POWER +BATTREMGND FUSE 25A REMOTE LEVEL CONTROL LINE LEVEL INPUT HIGH LEVEL INPUT + R + L LR BassLink T BassLink T 2 RadioFans.CN 收音机爱 好者资料库 BassLink T is equipped with two line-level (RCA) inputs and two speaker-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 head unit with two line-level or subwoofer (RCA) outputs. APPLICATIONS POWER +BATTREMGND FUSE 25A REMOTE LEVEL CONTROL LINE LEVEL INPUT HIGH LEVEL INPUT AUTO TURN ON PHASE GAINCROSSOVER BASS BOOST AUTOOFF 1800 + R + L LR BassLink T BassLink T 3 Figure 8. BassLink T audio connections for a head unit equipped with two speaker-level outputs. APPLICATIONS(CONTINUED) POWER +BATTREMGND FUSE 25A REMOTE LEVEL CONTROL LINE LEVEL INPUT HIGH LEVEL INPUT AUTO TURN ON PHASE GAINCROSSOVER BASS BOOST AUTOOFF 1800 + R + L LR BassLink T BassLink T 4 BassLink T provides several controls and indica- tors that simplify sonic integration with virtually any vehicles unique acoustic properties. They are located on the top control panel, as shown in Figure 12. GAIN Control: Use this control to adjust the relative volume (loudness) of BassLink T with respect to the other speakers in the vehicle. CROSSOVER: Use this control to adjust the amount of high-frequency information present in BassLink Ts output. A lower value means more of the 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 the control to any value between 6dB and +3dB, according to your preference. PHASE Control: Use this switch to reverse the phase of BassLink Ts output with respect to its input. Choose the position (0 or 180) that sounds the best. Figure 12. BassLink T control panel. NOTE: Depending on BassLink Ts orientation and location in a vehicle, reversing the phase may (or may not) increase or decrease the amount of perceived upper bass 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 the subwoofer is at maximum output. Be sure to monitor this indicator during BassLink T setup (see Tuning BassLink T). When properly tuned, the PEAK LED should light momentarily during high-level bass transients. Avoid adjustments that cause the PEAK LED to remain lit for extended periods. POWER LED:This indicator will glow blue when BassLink T is operational. CONTROLS ANDFUNCTIONS 1. Unplug the RJ11 cable that connects the Remote Level Control to BassLink T. 2. Make sure the head unit is off and its volume control is set to minimum. 3. On BassLink Ts top panel, initially set all controls to their midpoint positions, as shown in Figure 12. On BassLink Ts top panel, initially set PHASE to 0 . 4. Turn on the head unit and play a favorite music track that has substantial bass. Set the head units volume control to 75 percent of the total output (approximately 3 oclock on rotary controls). 5. Adjust the GAIN control clockwise until the PEAK LED (on BassLink Ts top panel) begins to flash with each bass note but doesnt stay lit 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 listen again for upper bass content. There may be more upper bass, less upper bass, or no change at all. The position that provides the most upper bass is correct, but choose either setting according to your taste. 8. Adjust the CROSSOVER control clockwise or counterclockwise until you hear only low- frequency information. For example, you should NOT hear any vocals coming from BassLink 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 counterclockwise until the PEAK LED only flashes. 11. Reconnect the RJ11 cable between the Remote Level Control and BassLink T. You may then use the Remote Level Control to adjust the level of the bass to suit your taste and/or different program material. NOTE: In most cases, the above steps will provide satisfactory tuning. However, the actual process may 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. TUNINGBASSLINKT POWER +BATTREMGND FUSE 25A REMOTE LEVEL CONTROL LINE LEVEL INPUT HIGH LEVEL INPUT AUTO TURN ON PEAK PHASE GAINCROSSOVER BASS BOOST AUTOOFF 1800 + R + L LR BassLink T BassLink T 5 PROBLEM: POWER LED is not lit. CAUSES and SOLUTIONS: 1. Fuse is blown and needs replacement. 2. Head unit is not functioning properly. Check remote voltage, and power, ground or remote connections. 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 audio signals to BassLink T. PROBLEM: BassLink T sounds muddy or distorted. CAUSES and SOLUTIONS: 1. 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 BOOST control (see Tuning BassLink T on page 7). 3. Head-unit output is distorted or blown. See your authorized Infinity car audio dealer. PROBLEM: No output 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 on page 4). PROBLEM: BassLink T turns on before head unit is completely on and produces a “thump” sound. CAUSE and SOLUTION: For speaker-level connections, BassLink T is receiving a false turn-on signal. On BassLink Ts top panel, slide AUTO TURN-ON to OFF and use the Remote (REM) connection. PROBLEM: BassLink Ts POWER LED remains on after head unit is turned off. CAUSE and SOLUTION: For speaker-level connections, this is normal operation when AUTO TURN-ON is set to ON. BassLink T will remain on another 5 to 10 minutes after sensing that audio signals are not present before shutting down. PROBLEM: BassLink T produces a loud humming noise with the system OFF when using speaker-level inputs. CAUSE and SOLUTIONS: This problem is caused by a feedback loop between your speakers and the high-level inputs of BassLink T. Choose one of the following solutions: 1. Connect a wire from the REMOTE terminal on BassLink T to the remote turn-on of your head unit or to the vehicles accessory circuit. On the control panel, slide the AUTO-ON switch to the OFF 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 inputs to the head-unit side of the capacitors. Use one capacitor per speaker input channel. Figure 10. Connecting supplied capacitors. TROUBLESHOOTING Capacitor + Speaker wire from head unit To + speaker-level input on BassLink T To + 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 4 243-100-05017-0BA 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 13 355-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 22 333-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 31 351-AM03008A079 Machine screw 3 32 352-AM02010D006 Screw 2 33 333-EVA-05021-0BA EVA gasket 1 7 BASSLINK 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 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 panel 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/ 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 from 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 the 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 thread 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 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. BassLink T BassLink T 8 BassLink T BassLink T 9 BASSLINK T Electrical Parts List Part NumbersDescriptionReference Designators POWER SUPPLY/AMPLIFIER PCB Resistors 110- 12102j52resistor 1K 1/2W 5% 52mm RX1 110- 14000j26resistor 0 1/4W 5% 26mm R525,530 110- 16000j26resistor 0 1/6W 5% 26mm D603 110- 16100j26resistor 10 1/6W 5% 26mm R521,523,613,500 110- 16102j26resistor 1K 1/6W 5% 26mm R519,541,542,502,560,629,605 110- 16103j26resistor 10K 1/6W 5% 26mm R285,294,508511,540,611,507,612,616,621,622,623, 625,626,627,600,601,604,606 110- 16104j26resistor 100K 1/6W 5% 26mm R517,618,624,603 110- 16105j26resistor 1M 1/6W 5% 26mm R422,420 110- 16106j26resistor 10M 1/6W 5% 26mm R421 110- 16122j26resistor 1.2K 1/6W 5% 26mm R295 110- 16123j26resistor 12K 1/6W 5% 26mm R234,513 110- 16152j26resistor 1.5K 1/6W 5% 26mm R550 110- 16154j26resistor 150K 1/6W 5% 26mm R80A 110- 16182j26resistor 1.8K 1/6W 5% 26mm R74A 110- 16183j26resistor 18K 1/6W 5% 26mm R274 110- 16204j26resistor 2