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Infinity Kappa 202a Service Manual

Automotive amplifier
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Kappa 202a
Automotive Amplifier
SERVICE MANUAL
Infinity Systems Incorporated
250 Crossways Park Dr.
Woodbury, New York 11797
Rev0
10/2004

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Summary of Contents for Infinity Kappa 202a

  • Page 1 Kappa 202a Automotive Amplifier SERVICE MANUAL Infinity Systems Incorporated 250 Crossways Park Dr. Woodbury, New York 11797 Rev0 10/2004...
  • Page 2 Kappa 202a - CONTENTS - SPECIFICATIONS ……..…………………………………………………………..2 FEATURES ..……………………………….……………….……………….…...…3 APPLICATIONS (SET-UP GUIDE) ………………..……..……………………….4 PRECAUTION AND NOTES..…..………………….….…………………………..6 INSTALLATION ….………..…………..…………….……………………………..7 TROUBLESHOOTING ….………..………………….……………………………..9 BLOCK DIAGRAMS………...……………….……………….…………..….…….10 ELECTRICAL PARTS LIST ..……………….……………….…………..….…….11 PCB DRAWINGS ….………..……………………………………………………..16 SEMICONDUCTOR PINOUTS..…..………………….….……………………….30 SCHEMATICS …………..……………………..…….…….….………..………….31 REVISIONS ……………..……………………..…….…….….………..………….39 Occasional refinements may be made to existing products without notice but will always meet or exceed original specifications...
  • Page 3 All tests to be done from 20 to 20KHz at 14.4 VDC into 4 ohm loads, unless otherwise specified. 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.
  • Page 4 Kappa 202a FEATURES The Kappa 202a is a 2-channel power amplifier that offers full-range stereo, bridged-mono or tri- mode operation, and is rated at 200 watts (rms) per channel into a 4-ohm load. In a bridged- mono configuration, it can deliver up to 600 watts (rms) for the same load. The 202a also features: ·...
  • Page 5 NOTE: For simplicity, Figures 1 through 3 do not show power, Figures 1 through 3 show how to configure the Kappa 202a remote, and input connections. for stereo, bridged-mono, and tri-mode operation.
  • Page 6 102a to drive a stereo pair of 6" mid/bass speakers. The 102a’s low-pass outputs feed a bridged- KAPPA 102a mono Kappa 202a to drive 6" Mid/Bass Speakers a single 12" subwoofer. L/R Inputs NOTE: Many different systems are possible using...
  • Page 7 Kappa 202a P R E C A U T I O N S A N D N O T E S • The Kappa 202a has five levels of circuit protection • Always wear protective eyewear when using tools. that monitor the amplifier and will shut it down if the •...
  • Page 8 M P L I F I E R A R T S I S T Refer to Figure 7 (below) for details of the Kappa 202a’s Examine and verify that the package includes the front and rear panel connections. following items: 1.
  • Page 9 R O S S O V E R Dynamic Bass Optimizer (DBO) is a new approach to IMPORTANT: If you plan to use the Kappa 202a to drive enhancing low-frequency reproduction in a vehicle. full-range speakers, set both AMP and AUX filters to...
  • Page 10 Make sure the vehicle’s electrical system is Audio cycles A protection circuit Verify the following– working properly and power is reaching the Kappa 202a off and on; is turning the electrical system is (i.e., green LEDs on the top panel are on).
  • Page 11 Kappa 202a XOVER FLAT LEFT INPUT 250mV-9V DIFF. SAFE POWER MODULE BASS SPKR OUT VARIABLE GAIN CIRCUIT FREQ. 250mV-9V 32-320HZ GREEN 320HZ FREQ. POWER STEREO PROTECTION MUTE L&R CIRCUIT CIRCUIT (BRIDGE) MODULE 320HZ VARIABLE FREQ. 320-320HZ FLAT L OUT XOVER...
  • Page 12 Kappa 202a KAPPA 202A Electrical Parts List Part# Description Reference Designator SMD PWM MODULE Resistors R2,15,18 RS1700 SMD RES 1Kohm 5% 1/8W RS1701 SMD RES 10Kohm 5% 1/8W R9,11 RS1702 SMD RES 100Kohm 5% 1/8W RS1703 SMD RES 2.2Kohm 5% 1/8W RS1705 SMD RES 4.7Kohm 5% 1/8W...
  • Page 13 Kappa 202a Part# Description Reference Designator SMD LP/HP FILTER Miscellaneous CO1247 CONNECTOR HEADER R/A 8-P CO1267 CONNECTOR HEADER R/A 2-P CO1279 CONNECTOR HEADER R/A 3-P CO1280 CONNECTOR HEADER R/A 4-P CO1304 Header Stght 2-Pos 0.079" CONN1 SW2,3 SW1073 Switch Slide 2P3T Horizon WA1082 Washer Plain Nylon OD=0.2...
  • Page 14 Kappa 202a Part# Description Reference Designator MAIN PCB Resistors R40,42,43 RS1700 SMD RES 1Kohm 5% 1/8W RS1701 SMD RES 10Kohm 5% 1/8W R22,22A,24,24A,29,31,39,41,68,71,72,73 RS1702 SMD RES 100Kohm 5% 1/8W RS1703 SMD RES 2.2Kohm 5% 1/8W R34,52 RS1704 SMD RES 22Kohm 5% 1/8W...
  • Page 15 Kappa 202a Part# Description Reference Designator MAIN PCB BR1369 Bus Bar Copper 7 Term. 63 BB1,3 BR1372 Bus Bar 2 Terminals 1000 BB2,5-9,11,13,16,17 FB1,1A,2,2A,3,3A,4,4A,5,5A,6,6A,7,7A,8,8A CC1028 Ferrite Bead CO1315 Power Connector Pin Gold POWER1,2 SPKR OUT CO1316 Speaker Connector Pin Gol...
  • Page 16 WIRE 16AWG SOLID BLACK WI1598 Wire #18 Magnet Heavy Red WI1654 Wire #26 7x34 UL1007 Whit WI1655 Wire #26 7x34 UL1007 Blac WI1664 Wire #26 7x34 UL1007 Red XX1262 Acrylic Cover Infinity KA XX1266 Light Pipe for Inf. KAPPA XX1316 Pad Felt Black...
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  • Page 32 Kappa 202a **** KA’S MODEL KAPPA MODEL KA52a ONLY KAPPA MODEL KA255a ONLY *SW1 CONN1 NOTES C1,C2,C9,C10 C3,C4,C11,C12 **C3,4,11,12 ***JI,2,3,4 C3,C4,C11,C12 KA52a MA0043 0.15uF 0.015uF 0.015uF KA102a MA0054 KA202a MA0054 X1 = 32-320Hz X15 = 480-4.8KHz KA54a MA0054 FRONT KA54a...
  • Page 33 Kappa 202a +16V 0.1uF L IN FROM IC1:A IC1:B SUM. 0.22uF TL072 0.22uF TL072 0.47uF 0.47uF R IN L IN L IN 0.1uF XOVER HP/LP VR1B VR1D -16V MODULE VR1A VR1C FREQ. FREQ. VR2B VR2A R IN FROM SUM. FOUR GANG 2.7K...
  • Page 34 Kappa 202a 33pF 10K 1% 24.99K 1% +16V IC1:B 0.1uF 2.2uF 49.9K 1% TL072 IC1:A 4.99K 1% TL072 INPUT 2.2uF 49.9K 1% 0.1uF -16V XOVER MOD. 33pF PC1147 10K 1% (ZD0147) 24.9K 1% +16V IC2:B 0.1uF 2.2uF 49.9K 1% IC2:A TL072 4.99K 1%...
  • Page 35 Kappa 202a +45V Q12A R12A TIP31C +OUT R TIP35C Q16A Q11A TIP35C R11A 2SC3906K C17A ROUT R22A SAFE BASS Q10A R10A MODULE INPUT TIP35C PC1146 LOUT DIFF. SPEAKER (ZD0149) R26A AMP. CIRCUIT +16V +16V -16V -16V 0.38uH SHEET 2 AGND...
  • Page 36 Kappa 202a 2.2K 4.7K BATT 300UH/40A 2.2K 2SC2412K 0.1uF POWER 2 0.1uF C40A C39A 47uF/16V MUTE OUT 2SA1037K TIP31C FB12 TO MODULES +16V UF4002 BATT RLS4148 300UH/40A UF4002 0.1uF AWG22 POWER 1 CHASSIS AWG22 UF4002 FROM SHEET 3 +BATT. FB11...
  • Page 37 Kappa 202a R14 220 +BATT. 2SC2412K RXT2907A 2.2K REM.IN 3.3K +BATT. .1uF TO LAMP MOD. REM.OUT 330uF/16V C2 0.1uF 0.1uF RXT2222A TO LAMP MOD. RXT2907A 4.7uF/10V +5 REF SCR1 RLS4148 TL494 4.7K SHORT PROTECTION RXT2222A 0.1uF RXT2907A 4.7K 6.8K 100K 2700pF 0.1uF...
  • Page 38 Kappa 202a +16V NON INVERTER MODEL KA +16V .1uF VALUES 54a 102a 202a 255a +16V +16V *R1,R21 5.1K 5.1K 11K 9.1K 5.1K **R2,R22 4.7K 4.7K 2SC2412K 100K 100K 100K 2N5401 ***R13,14,33,34 R IN R IN +OUT(R) MA0041 MA0067 MA0070 MA0041 2.2K...
  • Page 39 Kappa 202a XOVER MODULE MODULE GREEN RTX2222 RTX2222 LAMP 4.7K RLS4148 RLS4148 LAMP 4.7K MATES WITH PCB P/N PC1159 Title LAMPS MODULE harman consumer manufacturing This document is property of Size Number DESIGNED BY: M. RODRIGUEZ harman consumer manufacturer El Paso,...
  • Page 40 DATE REVISION CHANGE DESCRIPTION REASON OF CHANGE CHANGED: ECN# DATE REVISION CHANGE DESCRIPTION REASON OF CHANGE CHANGED: ECN# FALSED TRIGGERING ON SHORT CIRCUIT PROTECTION 03/06/96 DELETE D3 R. MACIAS FALSED TRIGGERING ON SHORT CIRCUIT PROTECTION 12/03/96 DELETE D2 TO D7,C7,C8,C9,C11,R20,R21,R22,R24,R25,SCR2 R.