Audison LRx 4.5 Service Manual
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Audison LRx 4.5 Service Manual

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- SERVICE MANUAL -
Issued in July 2007
62018 Potenza Picena (MC) Italy • Tel. 0733.870870 • Fax. 0733.870880 • http://www.audison.com

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  • Page 1 - SERVICE MANUAL - Issued in July 2007 62018 Potenza Picena (MC) Italy • Tel. 0733.870870 • Fax. 0733.870880 • http://www.audison.com...
  • Page 2 1 to 1 3. PCB parts list page from 1 to 1 Section E: Controls Modules LRx 4.5 - C First Version - Rev. = .1 1. Electrical Diagram sheet from 1 to 8 2. Components layout sheet from 1 to 1 3.
  • Page 3 CONTENTS Section F: Modules Block Diagrams 1. ABLD.1/.1A/.1B - Block diagram sheet from 1 to 1 2. CPU.1/.1A - Block diagram sheet from 1 to 1 3. PSC.1 - Block diagram sheet from 1 to 1 Section G: LRx series components pin-out 1.
  • Page 4 PART 1 ELECTRONIC PART...
  • Page 5 A different number indicates a non complatible VERSION. Please don’t use modules with a different VERSION NUMBER for replacement, unless it is indicates. Contact Audison for any necessary clarifications. REVISION LETTER A different letter indicates the module improved revision. Compatibility is not compromised. It is always suitable to replace a module with another one having the same letter or the successive one.
  • Page 6 LRx 4.5 - Service Manual - First Version PART 1: ELECTRONIC PART Section B: Mainboard revisions First Version: Rk = 12 Ohm 1. Electrical diagrams - Rk = 12 Ohm sheet from 1 to 2 2. Components layout - Rk = 12 Ohm sheet from 1 to 1 3.
  • Page 11 LRx 4.5 PCB PARTS LIST Rk = 12 Ohm REF. NO PART NO DESCRIPTION Q.TY INSULATOR FOR INDUCTOR L40 ..... . . 10035010 ..DIAM. 35mm ADHESIVE MYLAR ......1 FOR TOROIDAL TRANSFORMER .
  • Page 12 LRx 4.5 EXPLODED PCB PARTS LIST Rk = 12 Ohm REF. NO PART NO DESCRIPTION Q.TY 10071100 9.5x11mm ADHESIVE FELT 10090080 40x40x20mm FAN WITH CONNECTOR 10096010 LRx - 40mm FAN SUPPORT 10096020 LRx FAN SUPPORT - ANGLE CLIP 12420140 De 6.4 di 3.2 h. 4.8mm PLASTIC SPACER...
  • Page 13 LRx 4.5 - Service Manual - First Version PART 1: ELECTRONIC PART Section C: Power Side 2 Module Revision First Version: Rev. = .1 1. Electrical diagrams - Rev. = .1 sheet from 1 to 2 2. Components layout - Rev. = .1 sheet from 1 to 1 3.
  • Page 14 S. Regina Km. 3,500 - Marignano - 62018 Potenza Picena (MC) is not copied, printed or given to thirds without previous Tel. 0733.870870 Fax 0733.870880 written consent by Sheet description: Product: Type: Rev/Rk: audison LRx2-NEW POWER SIDE POSITIVE PCB code: Date: Sheet: BAF152B 16726910 B...
  • Page 15 S. Regina Km. 3,500 - Marignano - 62018 Potenza Picena (MC) is not copied, printed or given to thirds without previous Tel. 0733.870870 Fax 0733.870880 written consent by Sheet description: Product: Type: Rev/Rk: audison LRx2-NEW POWER SIDE NEGATIVE PCB code: Date: Sheet: BAF152B 16726910 B...
  • Page 16 S. Regina Km. 3,500 - Marignano - 62018 Potenza Picena (MC) is not copied, printed or given to thirds without previous Tel. 0733.870870 Fax 0733.870880 written consent by Sheet description: Product: Type: Rev/Rk: audison PS2-P/N LRx2 COMPONENTS LAY-OUT PCB code: Date: Sheet: BAC161C...
  • Page 17 PS2-P/N.1 MODULE PCB PARTS LIST Revision .1 REF. NO PART NO DESCRIPTION Q.TY MECHANICAL PARTS DS101........14244000..TEMPERATURE SENSOR SUPPORT ....1 CONNECTION WIRE AND CONNECTORS J1 J2 J3 .
  • Page 18 LRx 4.5 - Service Manual - Upgrading Version PART 1: ELECTRONIC PART Section C : Power Side 2 Module Revision Upgrading Version: Rev. = .1A 1. Electrical diagrams - Rev. = .1A sheet from 1 to 2 2. Components layout - Rev. = .1A sheet from 1 to 1 3.
  • Page 22 PS2-P/N.1A MODULE PCB PARTS LIST Revision .1A REF. NO PART NO DESCRIPTION Q.TY MECHANICAL PARTS DS101........14244000... TEMPERATURE SENSOR SUPPORT ....1 CONNECTION WIRE AND CONNECTORS J1 J2 J3 .
  • Page 23 LRx 4.5 - Service Manual - First Version PART 1: ELECTRONIC PART Section D : Class AB Final Modules First Version: Rev. = .1 1. AB7-2.1 Electrical diagrams - Rev. = .1 sheet from 1 to 1 2. AB7-2.1 Components layout - Rev. = .1 sheet from 1 to 1 3.
  • Page 24 S. Regina Km. 3,500 - Marignano - 62018 Potenza Picena (MC) is not copied, printed or given to thirds without previous Tel. 0733.870870 Fax 0733.870880 written consent by Sheet description: Product: Type: Rev/Rk: audison AB7-2 LRx.1 Modul POWER AMPLIFIER 2xTO247 PCB code: Date: Sheet: BAF149B...
  • Page 25 S. Regina Km. 3,500 - Marignano - 62018 Potenza Picena (MC) is not copied, printed or given to thirds without previous Tel. 0733.870870 Fax 0733.870880 written consent by Sheet description: Product: Type: Rev/Rk: audison AB7-2 LRx2 COMPONENTS LAY-OUT PCB code: Date: Sheet: BAC158C...
  • Page 26 AB7- 2.1 MODULE PCB PARTS LIST Revision .1 REF. NO PART NO DESCRIPTION Q.TY CONNECTION WIRE AND CONNECTORS J1 ........15232730... 2mm RIGHT ANGLE PIN HEADER 10+10 CONTACT ..1 RESISTORS R1 R6 .
  • Page 27 1 to 8 2. LRx 4.5 - C Components layout - Rev. = .1 sheet from 1 to 1 3. LRx 4.5 - C PCB parts list - Rev. = .1 page from 1 to 2 Table of the last upgrading revisions...
  • Page 37 LRx 4.5 - C.1 PCB PARTS LIST Revision .1 REF. NO PART NO DESCRIPTION Q.TY MECHANICAL PARTS ......... 10023520..LRx SPACERS for 4 LED ......1 CONNECTION WIRE AND CONNECTORS J1 J2 .
  • Page 38 LRx 4.5 - C.1 PCB PARTS LIST Revision .1 REF. NO PART NO DESCRIPTION Q.TY DIODES D3 ........16635401..DIFFUSED RED LED 3mm 12.6 mcd.....1 D2 .
  • Page 39 1 to 8 2. LRx 4.5 - C Components layout - Rev. = .1A sheet from 1 to 1 3. LRx 4.5 - C PCB parts list - Rev. = .1A page from 1 to 2 Table of the last upgrading revisions...
  • Page 49 LRx 4.5 - C.1A PCB PARTS LIST Revision .1A REF. NO PART NO DESCRIPTION Q.TY MECHANICAL PARTS ......... . 10023520..LRx SPACERS for 4 LED ......1 CONNECTION WIRE AND CONNECTORS J1 J2 .
  • Page 50 LRx 4.5 - C.1A PCB PARTS LIST Revision .1A REF. NO PART NO DESCRIPTION Q.TY DIODES D3 ........16635401..DIFFUSED RED LED 3mm 12.6 mcd.....1 D2 .
  • Page 51 LRx 4.5 - Service Manual PART 1: ELECTRONIC PART Section F : Modules Block Diagrams 1. ABLD Block diagrams - Rev. = .1 / .1A / .1B sheet from 1 to 1 2. CPU Block diagrams - Rev. = .1 / .1A sheet from 1 to 1 3.
  • Page 52 LIMIT MUTE LIMIT "A" class VOLTAGE Differential AMPLIFIER G-OUT Amplifier -RAMP +RAMP SENS-H OVERLOAD CASCODE_L R-SENS SENS-L G-IN audison Sheet desription: Product: Type: Rev/Rk: ABLD .1/.1A/.1B BLOCK DIAGRAM code: Date: Sheet: 36780740 / 41 / 42 28/oct/06 1 OF 1...
  • Page 53 LED_OVL DC SENSE 8 [J2] VEL1 +15V 9 [J2] VEL2 IN_DC RAMP [J1] [J2] [J2] [J2] [J1] -RAMP +RAMP AGND PWRGND audison Sheet desription: Product: Type: Rev/Rk: .1/.1A BLOCK DIAGRAM code: Date: Sheet: 36780750 / 51 12/sep/06 1 OF 1...
  • Page 54 2 [J1] THERMAL FEEDBACK REMOTE 10 [J2] LIMIT_TH 11 [J1] 12 [J1] 3 [J2] 3 [J1] 5 [J1] REMOTE_OUT TEMP1 TEMP2 audison Sheet desription: Product: Type: Rev/Rk: .2/.2A BLOCK DIAGRAM code: Date: Sheet: 36780761 / 62 28/oct/06 1 OF 1...
  • Page 55 LRx 4.5 - Service Manual - First Version PART 1: ELECTRONIC PART Section G: LRx Series components pin-out First Version: Rev. A 1. Leaded components page from 1 to 3 2. SMT components page from 4 to 7 Table of the last upgrading revisions...
  • Page 56 LRx SERIES COMPONENTS PIN-OUT: Leaded components Rev. A Case TO220 NPN bipolar transistor PIN OUT Ref. Type Product name Marking code Audio driver 2SD2400A Darlington BDW93C BDW93 PNP bipolar transistor PIN OUT Ref. Type Product name Marking code (2)(3) Audio driver 2SB1569A Darlington BDW94C...
  • Page 57 LRx SERIES COMPONENTS PIN-OUT: Leaded components Rev. A Case TO3P NPN bipolar transistor PIN OUT Ref. Type Product name Marking code Audio power FJA4310-O J4310-O PNP bipolar transistor PIN OUT Ref. Type Product name Marking code B: Base Audio power FJA4210-O J4210-O C: Collector...
  • Page 58 LRx SERIES COMPONENTS PIN-OUT: Leaded components Rev. A Case ATV- TV2 NPN bipolar transistor PIN OUT Ref. Type Product name Marking code Audio driver 2SD1857A-Q D1857A PNP bipolar transistor PIN OUT Ref. Type Product name Marking code B: Base C: Collector Audio driver 2SB1236A-Q B1236A...
  • Page 59 LRx SERIES COMPONENTS PIN-OUT: SMT components Rev. A Case SOD-80 / MiniMELF Diodes PIN OUT Ref. Type Product name Marking code General purpose LL4148 150mA 75V General Purpose BAV102 200mA 150V RLS245 FDLL 459/A A: Anode Zener BZV55C6V8 K: Cathode 6V8 5% Case DO-214AC Diodes...
  • Page 60 LRx SERIES COMPONENTS PIN-OUT: SMT components Rev. A Case SOT323 Switching dual diodes PIN OUT Ref. Application Product name Marking code Signal BAV70W A: Anode K: Cathode Case SMT6 NPN bipolar dual transistor (5) (6) (5) (6) Ref. Type Product name Marking code PIN OUT Dual audio preamplifier...
  • Page 61 LRx SERIES COMPONENTS PIN-OUT: SMT components Rev. A Case SO14 Pin configuration Ref. Type Product name Marking code OUT1 OUT4 Quad op amps LM324 -IN1 -IN4 +IN1 +IN4 +IN2 +IN3 -IN2 -IN3 OUT2 OUT3 Case SO16 TL494ID Pin configuration Ref. Type Product name Marking code...
  • Page 62 LRx SERIES COMPONENTS PIN-OUT: SMT components Rev. A Case D PACK NPN transistor PIN OUT Ref. Type Product name Marking code Epitaxial planar C2983 KTC2983D transistor PNP transistor PIN OUT Ref. Type Product name Marking code B: Base C: Collector Epitaxial planar KTA1225D A1225...
  • Page 63 PART 2 MECHANICAL PART...
  • Page 64 LRx 4.5 - Service Manual - First Version PART 2: MECHANICAL PART Section A : Exploded views and parts list First Version - Rev. A 1. Mechanical exploded view sheet from 1 to 1 2. Package exploded view sheet from 1 to 1 3.
  • Page 65 1. Mechanical Exploded View...
  • Page 66 2. Package Exploded View...
  • Page 67 10040400 HIGH DENSITY POLIETHILENE BAG 20x30 10120900 AUDISON WARRANTY rev. B 10125110 RAEE/WEE INFORMATION 10125240 LRx 4.5 / LRx 4.1k OWNER’S MANUAL 10125260 LRx FIXING TEMPLATE 10125270 LRx 4.5 CONFIGURATION TEMPLATE 90200020 AW STICKER S - AUDISON Transfer Sticker 19x7...
  • Page 68 LRx 4.5 EXPENDABLE MATERIALS Rev. A PART NO DESCRIPTION Q.TY 07000400 THERMO COND. GREASE 50g. 07000600 1-2577 SILICONE RESIN Part 2A page 2 of 2...
  • Page 69 LRx 4.5 - Service Manual - Upgrading Version PART 2: MECHANICAL PART Section A : Exploded views and parts list Upgrading Version - Rev. B 1. Mechanical exploded view sheet from 1 to 1 2. Package exploded view sheet from 1 to 1 3.
  • Page 70 1. Mechanical Exploded View...
  • Page 71 2. Package Exploded View...
  • Page 72 10040400 HIGH DENSITY POLIETHILENE BAG 20x30 10120900 AUDISON WARRANTY rev. B 10125110 RAEE/WEE INFORMATION 10125240 LRx 4.5 / LRx 4.1k OWNER’S MANUAL 10125260 LRx FIXING TEMPLATE 10125270 LRx 4.5 CONFIGURATION TEMPLATE 90200020 AW STICKER S - AUDISON Transfer Sticker 19x7...
  • Page 73 LRx 4.5 EXPENDABLE MATERIALS Rev. B PART NO DESCRIPTION Q.TY 07000400 THERMO COND. GREASE 50g. 07000600 1-2577 SILICONE RESIN Part 2A page 2 of 2...
  • Page 74 PART 3 TECHNICAL NOTES...
  • Page 75 LRx 4.5 - Service Manual - First Version PART 3: TECHNICAL NOTES First Version: Rev. A 1. Springs Replacing 2. 40x40x20 mm Fan Replacing 3. Idling Current Adjustment Table of the last upgrading revisions UPGRADING REVISIONS PART 1 PART 2...
  • Page 76 TECHNICAL NOTES Rev. A 1. Springs Replacing REMOVING 1- Insert the blade of the screwdriver in the center of the spring as shown in figure n°1. 2- Using the aluminium heatsink of the amplifier as leverage, slowly extract the spring as shown in figure n°2, being careful to not use too much force.
  • Page 77 TECHNICAL NOTES Rev. A 2. 40x40x20 mm Fan Replacing In the case you need to replace the fan, please proceed as per the following steps. A. Fan rigid fixing with rivets (first batch of pro- ducts) 1- Remove the bottom of the product. 2- Remove all the springs and the screws which fix the mainboard to the heatsink.
  • Page 78 TECHNICAL NOTES Rev. A 3. Idling Current Adjustment 1. Before adjusting the idling current, turn the amplifier on and let it play for several minutes. When the heat sink temperature reaches a range between 30 and 45°C (86 ÷ 113°F) that is the optimal condition to perform the adjustment. DIGITAL DIGITAL MULTIMETER...

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