Infinity 1210a Service Manual
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Infinity 1210a Service Manual

Reference series, 1 channel
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See also: Instruction Manual
Reference Series
1210a
1211a
1 CHANNEL POWER AMPLIFIER
SERVICE MANUAL
Infinity Systems, Inc.
250 Crossways Park Dr.
Woodbury, New York 11797
Rev2aa10/2005

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Summary of Contents for Infinity 1210a

  • Page 1 Reference Series 1210a 1211a 1 CHANNEL POWER AMPLIFIER SERVICE MANUAL Infinity Systems, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev2aa10/2005...
  • Page 2 (305mm x 470mm x 68mm) Fuse: 3 x 40A 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 Reference 1210a/1211a Power Amplifier Features 1-Channel Operation Advanced MOSFET Oversized Floating Rail Power Supply Floating Ground Factory - Head - Unit Speaker - Level input Variable lnput Sensitivity (250mV Fully Complementary Output Stage with Class-D Voltage Amplification Gold-plated Power, lnput and Output Connectors...
  • Page 4 Reference 1210a/1211a Power Amplifier OWER ONNECTIONS The Reference amplifiers are capable of WIRE-GAUGE CHART delivering high power levels, and require a Amplifier Maximum Minimum reliable connection to the vehicle’s electrical Model Current Draw Wire Gauge system in order to perform optimally. See Figure 1 for connection location.
  • Page 5 Reference 1210a/1211a Power Amplifier – 1201a/1211a PPLICATIONS The Reference subwoofer amplifiers are single-channel amplifiers. There are two sets of terminals to make it easy to connect multiple woofers. Either set of (+/–) terminals may be used when connecting woofers. To the right are two application diagrams to help plan your subwoofer system installation.
  • Page 6 Reference 1210a/1211a Power Amplifier SETTING INPUT SENSITIVITY REMOTE LEVEL CONTROL (OPTIONAL) All three Reference subwoofer amplifiers and 1. Initially turn the INPUT LEVEL control(s) to the 5761a amplifier have inputs for an optional minimum (counterclockwise). remote level control (100rc). This will allow the 2.
  • Page 7 NSTALLATION AND ETUP CONT SETTING DBO ™ (310a, 610a and 1210a) STATUS LEDs The Dynamic Bass Optimizer (DBO) is used to Clip: Indicates the amplifier is being overdriven, enhance low-frequency reproduction in a vehicle. and your speakers may be in danger. This...
  • Page 8 Reference 1210a/1211a Power Amplifier ROUBLESHOOTING • PROBLEM: • PROBLEM: No audio (POWER LED is off). No audio (PROTECT LED is on). CAUSE and SOLUTION: CAUSE and SOLUTION: No voltage at BATT+ and/or REM terminals, or Voltage greater than 16V or less than 8.5V on bad or no ground connection.
  • Page 9 Reference 1210a/1211a Power Amplifier...
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  • Page 12 Reference 1210a/1211a Power Amplifier REFERENCE 1210A/1211a BLOCK DIAGRAM...
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  • Page 16 Reference 1210a/1211a Power Amplifier...
  • Page 17 Reference 1210a/1211a Power Amplifier Electrical Parts List DIO-00-00108 DIODE FAST RECOVERY FR154 D71,72,73,81,82,83 DIO-00-00003 DIODE RECTIFIER 1N4004 D1,260 DIO-00-00019 DIODE ZENER 1W,12V 1N4742 D401 DIO-00-00006 DIODE SWITCHING SIGNAL 1SS133 / 1N4148 D169,402,403,404,405,406,407,408,411,412 TRS-00-00087 TRANSISTOR SMALL SIGNAL PNP "TO-92L" KTA1023Y Q402,403 TRS-00-00088 TRANSISTOR SMALL SIGNAL NPN "TO-92L"...
  • Page 18 Reference 1210a/1211a Power Amplifier Electrical Parts List cont'd MYC-00-00020CAPACITOR MYLAR 5% 100V 102J C90,91,405 MYC-00-00019CAPACITOR MYLAR 5% 100V 103J C280,380 MYC-00-00091CAPACITOR MYLAR 5% 63V "TL TYPE" 683J C117 MYC-00-00157CAPACITOR MYLAR 5% 63V "TL TYPE" 823J C116 MYC-00-00083CAPACITOR MYLAR 5% 63V "TL TYPE"...
  • Page 19 Reference 1210a/1211a Power Amplifier Electrical Parts List cont'd ICO-00-00021 I.C SMD PWM TL494C ICO-00-00094 I.C SMD "FLP-8" KIA393F U2,3 TRS-00-00098 TRANSISTOR SMALL SIGNAL PNP,SOT-23 KTA1504GR Q3,4,5 TRS-00-00113 TRANSISTOR SMALL SIGNAL NPN,SOT-23 KTC3875GR Q2,6 DIO-00-00117 DIODE SWITCHING SIGNAL RLS4148 D3,4,5,6,7,8 RES-08-00035 RESISTOR SMD "0805"1/10WF...
  • Page 20 Reference 1210a/1211a Power Amplifier Electrical Parts List cont'd RES-08-00198 RESISTOR SMD "0805"1/10WJ 47K OHM R513 RES-08-00204 RESISTOR SMD "0805"1/10WJ 51K OHM R512 RES-08-00221RESISTOR SMD "0805"1/10WJ 75K OHM R514 RES-08-00130 RESISTOR SMD "0805"1/10WJ 100K OHM R510 RES-08-00149 RESISTOR SMD "0805"1/10WJ 1M OHM...
  • Page 21 Reference 1210a/1211a Power Amplifier Reference 1211a Electrical Parts List Addendum The following chart below represents the only electrical parts differences in 1210a and 1211a models: MODEL PART NAME PART NUMBER SPEC DESIGNATOR REF 1210a RESISTOR RES-00-00756 1/5WF 820 OHM R116...
  • Page 22 Reference 1210a/1211a Power Amplifier...
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  • Page 27 Reference 1210a/1211a Power Amplifier...
  • Page 28 Protect LED...
  • Page 31 Reference 1211a Power Amplifier REF 1211a SCHEMATIC PAGE 1...
  • Page 32 Reference 1211a Power Amplifier REF 1211a SCHEMATIC PAGE 2...
  • Page 33 Reference 1211a Power Amplifier REF 1211a SCHEMATIC PAGE 3...
  • Page 34 Reference 1210a/1211a Power Amplifier PACKING EXPLODED VIEW...

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1211aReference series

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