Infinity BassLink 4sc Service Manual
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Infinity BassLink 4sc Service Manual

Amplifier expansion module
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BassLink 4sc
Amplifier Expansion Module

SERVICE MANUAL

Infinity Systems, Inc.
250 Crossways Park Dr.
Woodbury, New York 11797
Rev0
12/2005

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Summary of Contents for Infinity BassLink 4sc

  • Page 1: Service Manual

    BassLink 4sc Amplifier Expansion Module SERVICE MANUAL Infinity Systems, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev0 12/2005...

  • Page 2: Table Of Contents

    4 ohm @ rated power 19 Amps 2 ohm @ rated power 34 Amps 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.

  • Page 3: Connections

    Amplifier Expansion Module BassLink 4sc ONNECTIONS Note: In order for the Phantom Center circuit to INPUT CONNECTIONS If your source unit provides only speaker-level Note: If your source unit provides two line-level operate properly, the speakers and input wires You must connect full-range signal to all four...

  • Page 4: Controls And Functions

    BASSLINK 4sc BASSLINK II Figure 7. Figure 4. REMOTE LEVEL controls. Figure 5. BassLink 4sc controls. Figure 6. BassLink II controls on the front panel. SUB LEVEL: Use this control to adjust the PHANTOM CENTER: Use this switch to select the amount of bass to suit your preference.

  • Page 5: Setting Levels/Phantom Center Channel

    Using the Phantom Center Setup CD (included SUBWOOFER LEVELS level control) to its maximum output setting with your BassLink 4sc) you’ll listen to some (fully clockwise). instructions, a spoken setup track and several Note: In order for the Phantom Center to work music selections to determine the best adjustment Note: Refer to page 4, ”Controls and Functions, ”...
  • Page 6 Amplifier Expansion Module BassLink 4sc UNING CONTINUED Tracks 5 through 16 are music tracks. There PHANTOM CENTER SETUP CD SETTING THE PHANTOM CENTER CIRCUIT ADDING THE SOUND FROM THE REAR are three excerpts of songs and each excerpt Track 1 Introduction 1.

  • Page 7: Basic Troubleshooting

    • PROBLEM: • PROBLEM: BassLink II and 4sc Power LEDs are not lit. BassLink 4sc Power LED lit but no sound from No output from BassLink II when head-unit one or all speakers. fader control is set to front or rear (in a CAUSES and SOLUTIONS: 4-channel connection).

  • Page 8: Amplifier Block Diagram

    Amplifier Expansion Module BassLink 4sc 2 ohm/4 ohm HP filter 80Hz 12dB L/OFF/R Phantom Left SPEAKER Gain Remote control Circuit Control Channel select 3 pos swtw/off Front Circuit HP filter 200Hz/400Hz/800Hz/off 80Hz 12dB 2 ohm/4 ohm Right Remote control SPEAKER...

  • Page 9: Electrical Parts List

    Amplifier Expansion Module BassLink 4sc BASSLINK 4sc Electrical Parts List Part Number Description Reference Designators Note on Numbering Sequence, all components: "D510~519" (tilde mark) means D510,511,512,513,514,…etc. but "Q135-Q435" (hyphen) means Q135,235,335,435" POWER SUPPLY/MAIN/FACEPLATE PCB Semiconductors 100T0SA06 4 Q140-Q440 SMD Transistor...
  • Page 10 Amplifier Expansion Module BassLink 4sc Part Number Description Reference Designators Note on Numbering Sequence, all components: "D510~519" (tilde mark) means D510,511,512,513,514,…etc. but "Q135-Q435" (hyphen) means Q135,235,335,435" POWER SUPPLY/MAIN/FACEPLATE PCB R39 R43 R501~R515 R518~528 R529~530 290T63103 SMD Resistor SMD(0603) 10K 5%...
  • Page 11 Amplifier Expansion Module BassLink 4sc Part Number Description Reference Designators Note on Numbering Sequence, all components: "D510~519" (tilde mark) means D510,511,512,513,514,…etc. but "Q135-Q435" (hyphen) means Q135,235,335,435" POWER SUPPLY/MAIN/FACEPLATE PCB 532T25009 9PIN 1 J1 Terminal 535T20012 Terminal 12P P=2.0mm 180 1 J3...
  • Page 12 Amplifier Expansion Module BassLink 4sc Part Number Description Reference Designators Note on Numbering Sequence, all components: "D510~519" (tilde mark) means D510,511,512,513,514,…etc. but "Q135-Q435" (hyphen) means Q135,235,335,435" PWM (Power) PCB Capacitors 301T10463 SMD Capacitor SMD(0603) 0.1UF/50V 20% 1 C6 301T68263 SMD Capacitor...

  • Page 13: Drawings

    Amplifier Expansion Module BassLink 4sc...
  • Page 14 Amplifier Expansion Module BassLink 4sc...
  • Page 15 Amplifier Expansion Module BassLink 4sc...
  • Page 16 Amplifier Expansion Module BassLink 4sc...

  • Page 17: Ic/Transistor Pinouts

    Amplifier Expansion Module BassLink 4sc...

  • Page 18: Schematics

    Amplifier Expansion Module BassLink 4sc REVISION RECORD DESCRIPTION APPROVED: DATE: R305 改为 刘卫红 R16 R466.8K 5.1K 2005/11/09 25.5K C300 TL072 U300A C302 C304 TL072 U400B 22u/16v 823/MET 823MET R304 16K RL-I R105 R302 R307 25.5K VR101A C100 TL072 U100A C102...
  • Page 19 Amplifier Expansion Module BassLink 4sc D130 +VCC + C131 R142 1N4002 Q135 33U/35V R131 D669 R133 PROTECT Q133 C130 Q136 C134 10U/35V 6488 47/C R147 R140 Q131 C133 Q132 R132 Q130 4401 R144 3.3K 4401 4.7K R145 3.3K 47/C C136 0.2\5W...
  • Page 20 Amplifier Expansion Module BassLink 4sc D330 +VCC + C331 R342 1N4002 Q335 33U/35V R331 D669 R333 PROTECT Q333 C330 Q336 C334 10U/35V 6488 47/C R347 R340 Q331 C333 Q332 R332 Q330 4401 R344 3.3K 4401 4.7K R345 3.3K 47/C C336 0.2\5W...
  • Page 21 Amplifier Expansion Module BassLink 4sc R551 R552 R549 R555 -15V 11.8K 6.8K U505A TL072 +15V R550 CUT1 3.48K R557 R559 R514 U506C U506B C501 C502 CONT CONT I/O I/O I/O I/O R515 CD4066 0.01uf CD4066 0.01uf C509 U506D 5600pf C508...
  • Page 22 Amplifier Expansion Module BassLink 4sc CON6 Q503 4403 C505 R544 R546 D518 R547 C506 C507 D504 2.2K 2.2K Q504 103/C 4148 103/C SW500A R543 2.2K 4148 2.2k 103/C Q505 Q506 D505 SW-O 4403 4403 4403 R500 R504 R505 D510 R507...
  • Page 23 Amplifier Expansion Module BassLink 4sc DRI2 +12VB DRI1 1.8k LED1 DCPRC BLED NE555 PROTECT GND1 Q601 100K R609 RTH2 LEDD RTH1 CON5 4401 RTH2 104/C 1U/25V CON8 4401 RTH1 -15V 4148 4148 4148 GND1 100k 5401 MUTING MUTING 22U/25v 274/C NP22/16V 8P 端子台...
  • Page 24 Amplifier Expansion Module BassLink 4sc 4148 +12VB B647 +12VB B14V 9.1K IC2A 2.2U/50V PROTECT 4403 4148 LM358 4401 5.6V 4148 IC2CC LM358 4401 4148 TL431 47u/16V 47U/25V + C5 22U/25V 2.7K 104/C 200K 4148 100U/16V 4401 *5.1K DCPRC 5.6K 4148 4148 *5.1K...

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