HarmanKardon-BassLink-spk-sm维修电路原理图.pdf

Models: BassLink BassLink (Remote Level Control Ready) BassLink X Powered Automotive Subwoofer SERVICE MANUAL Infinity Systems, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev 2 7/2003 RadioFans.CN Contents ALL MODELS BASSLINK SPECIFICATIONS .2 CONNECTIONS/APPLICATIONS 3 TUNING BASSLINK.6 TROUBLESHOOTING 7 TEST SETUP PROCEDURE .8 BASSLINK (Original version without Remote Level Control jack) SERVICE BULLETIN INF2000-03 10 EXPLODED VIEW .11 MECHANICAL PARTS LIST .12 BLOCK DIAGRAM .13 PCB DRAWINGS .14 ELECTRICAL PARTS LIST 24 SCHEMATICS .29 PACKAGING .31 BASSLINK or BASSLINK X (Versions with Remote Level Control jack) SERVICE BULLETIN INF2003-01 33 EXPLODED VIEW .34 MECHANICAL PARTS LIST .35 BLOCK DIAGRAM .36 PCB DRAWINGS .37 ELECTRICAL PARTS LIST 44 SCHEMATICS .50 PACKAGING .54 ALL MODELS BASSLINK INTEGRATED CIRCUIT DIAGRAMS .55 RadioFans.CN 1 Basslink/Basslink X Specifications BASSLINK/BASSLINK w/ Remote Level Control/BASSLINK X Amplifier Power: 200W RMS 10% THD 120W RMS 1% THD Frequency Response: 20Hz 120Hz THD 30W1.0% Input Sensitivity: 50mV 4VLine-Level Input 1V 16V Universal Interface Maximum Input Sensitivity7mV Line-Level Input (Gain level Max)120mV Universal Interface Crossover Frequency: 50Hz 120Hz Crossover Slope: 12dB/octave Bass Boost: 6 to +3 dB 40Hz Signal-Noise Ratio65dB (Wide band w/ 22K LPF) Max Gain Level Noise3.0 mV Basslink (Level pot Max.)1.8 mV Basslink w/ Remote Level Control 1.8 mV Basslink X Max Gain Level Noise2.0 mV Basslink (Level pot Min.)1.7 mV Basslink w/ Remote Level Control 1.7 mV Basslink X Auto On/Off TimeFrom 1 1/2 to 5 min. (depending on last input signal level) Gain boost (min to max)9.0 dB Fuse: 25A Basslink 20A Basslink w/ Remote Level Control 20A Basslink X Maximum Current Draw: 12A Quiescent Current Draw: <800 mA Protection Circuits: Over/Under voltage17.5, 8.5 VDC Temperature95? C Short Circuitw/ 0.1 ? resistor DC OffsetYes Dimensions: 14-1/2 x 12-1/2 x 8-1/2 (L x W x H) (369mm x 318mm x 216mm) Weight16 lbs./7.2kg Infinity continually strives to update and improve existing products, as well as create new ones. The specifications and construction details in this and related Infinity publications are therefore subject to change without notice. RadioFans.CN 2 3 Connect power to BassLink, as shown in Figure 5. Also observe these installation tips: Use at least #12 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 to the nearest bare metal surface. For a good connec- tion, scrape away paint from the metal surface and use a screw with a lock (star) washer. Figure 5. Power connections for BassLink. Install a fuse holder with a 20 A fuse within 18 of the battery + terminal (see Figure 5). The REM connection requires +5 to +12 Vdc signal for BassLink to turn on remotely. Most head units with preamp outputs provide this remote voltage signal. For speaker-level appli- cations, a remote connection is not required, since BassLinks Auto Turn-On feature will sense voltage on the speaker wires to automatically turn on BassLink. IMPORTANT:To enable BassLinks Auto Turn-On feature, set AUTO TURN-ON to the AUTO position (see Figure 12 on page 6). POWERCONNECTIONS BassLink is equipped with four line-level (RCA) inputs and four speaker-level inputs. Any combina- tion of line-level and speaker-level inputs may be used to provide nonfading bass when connected to a head unit with four outputs. Figure 6. BassLink audio connections for a head unit with two line-level or subwoofer (RCA) outputs. To help you plan your installation, we included five system applications in Figures 6 through 10 on pages 3 through 5. For more system ideas, see your authorized Infinity car-audio dealer. Note: The applications show the optional remote SUB LEVEL control which installs under the dash- board for easy in-car bass level adjustments. APPLICATIONS ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? Chassis Ground (Bare Metal) BassLink (right side panel) Remote Turn-On Fuse 20 A Source Unit 18 Battery ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? LF Speaker + RF Speaker LR Speaker Subwoofer or Line-Level Outputs (on Source Unit) Sub Level Control (optional) RL RR Speaker + + Source Unit BassLink (right side) Sub Level Control (optional) + RCA Stereo Cables (not supplied) Note: For the original version Basslink without the AUTO OFF/ON switch and Optional Sub Level Control, references to these items in the Connections, Applications and Controls sections can be ignored - all other information is valid. 4 Figure 7. BassLink audio connections for a head unit equipped with four line-level (RCA) outputs. APPLICATIONS(CONTINUED) Figure 8. BassLink audio connections for a head unit equipped with two line-level (RCA) outputs and two speaker-level outputs. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? LF Speaker + RF Speaker LR Speaker Line-Level Outputs (on Source Unit) Sub Level Control (optional) RFLRRRLF RR Speaker + + Source Unit BassLink (right side) Sub Level Control (optional) + RCA Stereo Cables (not supplied) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? LF Speaker + RF Speaker LR Speaker Line-Level Outputs (on Source Unit) Sub Level Control (optional) RF LF Speaker Wires (spliced) RR LR RR Speaker + + Source Unit BassLink (right side) Sub Level Control (optional) VIOLETGREEN/BLACK VIOLET/BLACKGREEN + RCA Stereo Cables (not supplied) Splices (not supplied) Splices (not supplied) 5 Figure 9. BassLink audio connections for a head unit equipped with four speaker-level outputs. APPLICATIONS(CONTINUED) Figure 10. BassLink audio connections for a head unit equipped with two speaker-level outputs. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? LF Speaker + RF Speaker LR Speaker Sub Level Control (optional) Speaker Wires (spliced) RR LR RR Speaker + + Source Unit BassLink (right side) Sub Level Control (optional) VIOLETGREEN/BLACK VIOLET/BLACKGREEN Speaker Wires (spliced) RF LF GRAYWHITE/BLACK GRAY/BLACKWHITE + Splices (not supplied) Splices (not supplied) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? L Speaker + R Speaker Sub Level Control (optional) Speaker Wires (spliced) RL + Source Unit BassLink (right side) Sub Level Control (optional) GRAYWHITE/BLACK GRAY/BLACKWHITE + Splices (not supplied) Splices (not supplied) 6 BassLink provides several controls and indicators that simplify sonic integration with virtually any vehicles unique acoustic properties. They are located on the front and side panels, as shown in Figures 11 and 12. Figure 11. BassLink controls on the front panel. POWER LED:This indicator will glow red when BassLink is operational. GAIN Control: Use this control to adjust the rela- tive volume (loudness) of BassLink with respect to the other speakers in the vehicle. CROSSOVER: Use this control to adjust the amount of high-frequency information present in BassLinks output. A lower value signifies less high frequencies will be amplified. 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 what sounds best. Figure 12. BassLink controls on right side panel. PHASE Control: Use this switch to reverse the phase of BassLinks output with respect to its input. Choose the position (0 or 180) that sounds the best. Note: Depending on BassLinks orientation and location in a vehicle, reversing the phase may may (or may not) increase or decrease the amount of upper bass being reproduced. AUTO TURN-ON: For speaker-level connections, use this switch to activate (or deactivate) BassLinks automatic turn-on circuit. For most speaker-level applications, slide the switch to AUTO. However, if your system produces false turn-on signals or uses a remote (REM) connection, slide the switch to OFF . REMOTE GAIN CONTROL: Use this RJ-11 jack to connect the optional remote SUB LEVEL control. SERVO LED:This indicator glows green when the subwoofer is at maximum excursion and the amplifier is modifying the output to maintain maximum performance. Be sure to monitor this indicator during BassLink setup (see Tuning BassLink). When properly tuned, the SERVO LED should light momentarily during high-level bass transients. Avoid adjustments that cause the LED to remain lit for extended periods. CONTROLS ANDFUNCTIONS 1. Make sure the head unit is off and its volume control is set to minimum. 2. On BassLinks front panel, initially set all con- trols to their midpoint positions, as shown in Figure 11. On BassLinks side panel, initially set PHASE to 0 and AUTO TURN-ON to AUTO, as shown in FIgure 12. 3. Turn on the head unit and play a favorite music track that has substantial bass. Set the volume control to 75 percent of the total output (approximately 3 oclock on rotary controls). 4. Adjust the GAIN control clockwise until the SERVO LED (on BassLinks side panel) begins to flash with each bass note but doesnt stay lit continuously. 5. Listen to your system, making a mental note of the amount of upper bass being reproduced. 6. 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. 7. Adjust the CROSSOVER control clockwise or counterclockwise until you hear only low-fre- quency information. For example, you should NOT hear any vocals coming from BassLink when seated in the normal listening position. 8. Adjust the BASS-BOOST control clockwise or counterclockwise to suit your taste. 9. Recheck the SERVO 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 SERVO LED only flashes. 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. TUNINGBASSLINK Power Gain MinMax 50 Hz Crossover 120 Hz Bass Boost -6 (dB) +3 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? (Blue on Basslink X) Basslink/Basslink X TROUBLESHOOTING PROBLEM: POWER LED not lit. CAUSES and SOLUTIONS: 1. Fuse is blown and needs replacement. 2. Head unit 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. PROBLEM: BassLink sounds muddy or distorted. CAUSES and SOLUTIONS: 1. Gain is set too high and SERVO LED is lit constantly. Readjust GAIN control (see Tuning BassLink on the previous page). 2. Bass is set too high. Readjust BASS BOOST control (see Tuning BassLink on the previous page). 3. Head-unit output is distorted or blown. See your authorized Infinity car audio dealer. PROBLEM: No output from BassLink when head-unit fader control set to front or rear (in a 4-channel connection). CAUSE and SOLUTION: Input connections are improperly wired. Verify all connections (see Applications section) APPLICABLE TO BASSLINK WITH LEVEL CONTROL JACK AND BASSLINK X ONLY: PROBLEM: BassLink turns on before head unit is completely on and produces a “thump” sound. CAUSE and SOLUTION: For speaker-level connections, head unit is producing a false turn-on signal. On BassLinks side panel, slide AUTO TURN-ON to OFF. PROBLEM: BassLinks 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 will remain on another 5 to 10 minutes after sensing that audio signals are not present before shutting down. If you prefer immediate shut- down, set AUTO TURN-OFF to OFF. 7 BassLink/BassLink X 8 Equipment needed: Function/signal generator/sweep generator Integrated/Power Amplifier (capable of driving 2 ohm loads) 14 volt DC power supply 20A or greater with current-limit protection Multimeter RCA cable, Universal Interface molex connector, Speaker cables General Unit Function (UUT = Unit Under Test) Switch/Controls: GAIN control full counterclockwise (Min) CROSSOVER full clockwise (120 Hz) BASS BOOST at center (12 oclock) PHASE, AUTO-ON - either position 1)From the signal generator, connect one line level (RCA) cable to the Basslink Line Level Input jacks (Front,L/R) on the UUT. Use a Y-cable from a mono source if necessary to connect to both inputs. 2)Turn on generator, adjust to 100mV, 40 Hz. 3)Attach 14v DC source to Power terminals on UUT, including +14v to Remote connection. Red LED should ON. Turn LEVEL con- trol full clockwise (Max) 4)Bass response should be heard and felt. Green servo light should not be illuminated. 5)Adjust the generator to 175mV, 40 Hz. Green servo light should turn ON. DO NOT DRIVE THE BASSLINK FOR MORE THAN A FEW SECONDS AT THIS LEVEL OR THE UUT MAY GO INTO THERMAL PROTECTION 6)Turn off generator, turn GAIN control fully counterclockwise, d