Audison LRx 4.5 Service Manual

- SERVICE MANUAL -

Issued in July 2007

62018 Potenza Picena (MC) Italy • Tel. [phone] • Fax. [phone] • http://www.audison.com

CONTENTS

PART 1: ELECTRONIC PART and UPGRADING

Section A: Identication system

1. Mainboard identication page from 1 to 1

2. Modules Identication and replacement page from 1 to 1

Section B: LRx4.5 Mainboard revisions

LRx4.5-MB First Version Rk = 12 Ohm

1. Electrical diagram sheet from 1 to 2

2. Components layout sheet from 1 to 1

3. Printed Circuit Board Exploded View sheet from 1 to 1

4. PCB parts list page from 1 to 1

5. Exploded PCB parts list page from 1 to 1

Section C: Power Side 2 Module Revisions

PS2-P/N.1 First Version

1.Electrical diagram sheet from 1 to 2

2. Components layout sheet from 1 to 1

3. PCB parts list page from 1 to 1
PS2-P/N.1A Upgrading Version

1.Electrical diagram sheet from 1 to 2

2. Components layout sheet from 1 to 1

3. PCB parts list page from 1 to 1

Section D: Class AB Final Modules

AB7-2.1 First Version

1.Electrical diagram sheet from 1 to 1

2. Components layout sheet from 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. PCB parts list page from 1 to 2

LRx 4.5 - C Upgrading Version - Rev. = .1A

1. Electrical Diagram sheet from 1 to 8

2. Components layout sheet from 1 to 1

3. PCB parts list page from 1 to 2

Table of the last upgrading revisions

UPGRADING REVISIONS

PART 1

ELECTRONIC PART

PART 2

MECHANICAL PART

SECT. B

Mainboard

Rk = 12 Ohm

SECT. G

Comp. Pin-out

SECT. A - Exploded views

and parts list

Rev. A

SECT. C
PS2-P/N

SECT. D

AB7-2

SECT. F

PART 3

Technical Notes

Technical

Notes

PS2.1

ABLD.1

4.5-C.1

PSC.2

CPU.1

Rev. A Rev. A

ABLD

CPU

PSC

SECT. E
Controls

Rk = 12 Ohm

Rev. B

PS2.1A

ABLD.1

4.5-C.1A

PSC.2

CPU.1

Rev. A

Rev. A

AB7-2.1

AB7-2.1

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. Leaded components page from 1 to 3

2. SMT components page from 4 to 7

PART 2: MECHANICAL PART and UPGRADING

Section A: Exploded views and parts list - First Version

1. Mechanical exploded view - Rev. A sheet from 1 to 1

2. Package exploded view - Rev. A sheet from 1 to 1

3. Amplier parts list - Rev. A page from 1 to 2

Section A: Exploded views and parts list - Upgrading Version

1. Mechanical exploded view - Rev. B sheet from 1 to 1

2. Package exploded view - Rev. B sheet from 1 to 1

3. Amplier parts list - Rev. B page from 1 to 2

PART 3: TECHNICAL NOTES

1. Springs Replacing

2. 40x40x20 mm Fan Replacing

3. Idling Current Adjustment

Table of the last upgrading revisions

UPGRADING REVISIONS

PART 1

ELECTRONIC PART

PART 2

MECHANICAL PART

SECT. B

Mainboard

Rk = 12 Ohm

SECT. G

Comp. Pin-out

SECT. A - Exploded views

and parts list

Rev. A

SECT. C
PS2-P/N

SECT. D

AB7-2

SECT. F

PART 3

Technical Notes

Technical

Notes

PS2.1

ABLD.1

4.5-C.1

PSC.2

CPU.1

Rev. A Rev. A

ABLD

CPU

PSC

SECT. E
Controls

Rk = 12 Ohm

Rev. B

PS2.1A

ABLD.1

4.5-C.1A

PSC.2

CPU.1

Rev. A

Rev. A

AB7-2.1

AB7-2.1

PART 1

ELECTRONIC PART

IDENTIFICATION SYSTEM

06th February 2007

Section A

1. MAINBOARD IDENTIFICATION

There is a key resistor called “Rk” on the ampliers mainboard; it allows you to identify which PCB it is and

to nd the proper electric diagrams and components layouts for it.

How to nd the right diagrams to refer to

1) Find “Rk” resistor on the mainboard and determine its value.

2) Please check the item “Rev/Rk” in the cataloguing information table; then select the diagrams where

“Rk” value corresponds to the pre-determined one.

Example:

“Rk” resistor assembled
onto mainboard, its value
is 10 Ohms.

Caution

When “Rk” resistor is not onto the PCB, you will nd “ - “ in the diagrams instead of its value.

Consult the diagrams where you can
nd 10 Ohms value in item “Rev/ Rk”

Part 1A page 1

2. MODULES IDENTIFICATION AND REPLACEMENT

Besides the module identication name, you can usually nd a number (indicating version) and a letter

(indicating revision) onto the PCB.

By decoding these two gures, you can handle the compatibility of the modules you have to replace and

nd the corrisponding diagrams.

Example of how to decode the modules VERSION / REVISION.

LRx2CD-S.0A

LRx2CD-S = Module type

.0 = Version number

A = Revision letter

(If this letter is missing, it means the module is the rst release).

VERSION NUMBER

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 clarications.

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.

How to nd the right diagrams to refer to

1) Find the version/revision identication gures on the module.

2) Please check the item “Rev/RK” in the cataloguing information table; then select the diagrams with

corresponding version/revision gures.

Example:

Date: Sheet:

Type: Rev/Rk:

29/mar/2006

LRx2CD-S

.0A

Consult the diagrams where you

can nd “.0A” in item “Rev/Rk”.

Version / Revision

corresponding to “.0A”.

LRx2-CD.0A

Date: Sheet:

Type: Rev/Rk:

28/oct/06

MAINBOARD

10 ohm

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. Printed Circuit Board Exploded View - Rk = 12 Ohm sheet from 1 to 1

4. PCB parts list - Rk = 12 Ohm page from 1 to 1

5. Exploded PCB parts list - Rk = 12 Ohm page from 1 to 1

Table of the last upgrading revisions

UPGRADING REVISIONS

PART 1

ELECTRONIC PART

PART 2

MECHANICAL PART

SECT. B

Mainboard

Rk = 12 Ohm

SECT. G

Comp. Pin-out

SECT. A - Exploded views

and parts list

Rev. A

SECT. C
PS2-P/N

SECT. D

AB7-2

SECT. F

PART 3

Technical Notes

Technical

Notes

PS2.1

ABLD.1

4.5-C.1

PSC.2

CPU.1

Rev. A Rev. A

ABLD

CPU

PSC

SECT. E
Controls

AB7-2.1

Printed Circuit Board Exploded View

5

6

6

3

7

7

2

4

8

9

1

4

4

4

5

5

5

10

10

10

10

LRx 4.5 PCB PARTS LIST

Rk = 12 Ohm

Part 1B page 1 of 1

INSULATOR

FOR INDUCTOR L40. . . . . . . . . . . . . . . . . . . . . . . 10035010 . . . . . . . DIAM. 35mm ADHESIVE MYLAR . . . . . . . . . . . . . . . . . . . . . . . . .1

FOR TOROIDAL TRANSFORMER . . . . . . . . . . . . 10035020 . . . . . . .ADHESIVE MYLAR FOR LRx TRANSFORMER. . . . . . . . . . . . . .1

CONNECTION WIRE AND CONNECTORS

CHASSIS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15100100. . . . . . . L 60mm BLACK WIRE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

JTB1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15213020. . . . . . . 2W-TBF TERMINAL BLOCK . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

JTB2 JTB3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15213111 . . . . . . . 4W ATP TERMINAL BLOCK . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

J4 J5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15231710 . . . . . . . 2.54mm STRAIGHT PIN HEADER 2+2 CONTACT. . . . . . . . . . . .2

J20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15231760. . . . . . . 2.54mm STRAIGHT PIN HEADER 10+10 CONTACT. . . . . . . . . .1

JMP1 (1 da 3 Vie). . . . . . . . . . . . . . . . . . . . . . . . . . 15232500. . . . . . . 2.54mm STRAIGHT PIN HEADER 3 CONTACT. . . . . . . . . . 0,075

J8 J9 J11 J12 J22 J23 . . . . . . . . . . . . . . . . . . . . . . 15235040. . . . . . . 2.54mm STRAIGHT FEMALE HEADER 6+6 CONTACT . . . . . . .6

J13 J16 J17 J21 . . . . . . . . . . . . . . . . . . . . . . . . . . .15235060 . . . . . . .2.54mm STRAIGHT FEMALE HEADER 10+10 CONTACT . . . . .4

FAN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15237120 . . . . . . .2mm PCB CONNECTOR 2 WAY. . . . . . . . . . . . . . . . . . . . . . . . . .1

J1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15240010. . . . . . . 6W FASTON PCB CONNECTOR . . . . . . . . . . . . . . . . . . . . . . . . .1

MAGNETIC WIREWOUND

L3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15721250 . . . . . . . 47uH INDUCTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

L1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15721320 . . . . . . . “UR” CORE - L32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

L2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15721360 . . . . . . . 2 x TOROIDAL CORE - L40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

T1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35754810 . . . . . . .TOROIDAL TRANSFORMER T366. . . . . . . . . . . . . . . . . . . . . . . .1

RESISTORS

R35 R36 R37 R38 R39 R40 R41 R42 R43 . . . . . . 16000800. . . . . . . 1/4W 1% 4.64 Ohm (MRS25) . . . . . . . . . . . . . . . . . . . . . . . . . . 12

R44 R45 R46

R47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16010500 . . . . . . . 1/4 W 1% 464 Ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

R20 R23 R26 R29 . . . . . . . . . . . . . . . . . . . . . . . . . 16011000 . . . . . . . 1/4 W 1% 562 Ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

R1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16011500 . . . . . . . 1/4 W 1% 681 Ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

R19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16012500 . . . . . . . 1/4 W 1% 1 KOhm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

R22 R24 R28 R30 . . . . . . . . . . . . . . . . . . . . . . . . . 16018500. . . . . . . 1/4 W 1% 10 KOhm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

R13 R16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16019500 . . . . . . .1/4 W 1% 14.7 KOhm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

R21 R25 R27 R31 R64 R65. . . . . . . . . . . . . . . . . . 16020000 . . . . . . . 1/4 W 1% 17.8 KOhm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

R11 R12 R17 R18 . . . . . . . . . . . . . . . . . . . . . . . . . 16021400. . . . . . . 1/4 W 1% 46.4 KOhm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

R34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16021900 . . . . . . . 1/4 W 1% 68.1 KOhm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

R14 R15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16022500 . . . . . . .1/4 W 1% 100 KOhm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

RK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16120400 . . . . . . . 1/4 W 5% 12 Ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

R2 R3 R4 R5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16140500. . . . . . . 1/2 W 5% 4.7 Ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

R7 R8 R33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16141000. . . . . . . 1/2 W 5% 10 Ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

R32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16141500 . . . . . . . 1/2 W 5% 47 Ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

R6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16143000 . . . . . . . 1/2W 5% 1 KOhm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

CAPACITORS

C24 C25 C30 C31 C32 C33 C39 C40 . . . . . . . . . . 16402001. . . . . . . CERAMIC 100p 50V 10% P.5mm . . . . . . . . . . . . . . . . . . . . . . . . .8

C1 C19 C45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16407001. . . . . . . CERAMIC cl3 100n 50V >20% P.5mm . . . . . . . . . . . . . . . . . . . . .3

C26 C27 C28 C29 C34 C35 C36 C37 . . . . . . . . . . 16430200. . . . . . . POLYESTER 1nF 63Vdc/40Vac P.5mm . . . . . . . . . . . . . . . . . . . .8

C43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16430600 . . . . . . . POLYESTER 4.7nF 63Vdc/40Vac P.5mm . . . . . . . . . . . . . . . . . . .1

C42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16431900 . . . . . . . POLYESTER 68nF 63Vdc/40Vac P.5mm . . . . . . . . . . . . . . . . . . .1

C2 C3 C5 C6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16441601. . . . . . . POLYESTER 22nF 50Vdc/30Vac P.5mm . . . . . . . . . . . . . . . . . . .4

C7 C8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16530530 . . . . . . .ELECTROLYTIC 105° 1500uF 25V Low imp. . . . . . . . . . . . . . . . .2

C38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16530801 . . . . . . . ELECTROLYTIC 85° 100uF 25V . . . . . . . . . . . . . . . . . . . . . . . . .1

C13 C16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16530831 . . . . . . .ELECTROLYTIC 85° 220uF 25V . . . . . . . . . . . . . . . . . . . . . . . . .2

C4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16530841 . . . . . . . ELECTROLYTIC 105° 220uF 25V . . . . . . . . . . . . . . . . . . . . . . . .1

C62 C63 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16540000 . . . . . . .ELECTROLYTIC 85° 1uF 50V . . . . . . . . . . . . . . . . . . . . . . . . . . .2

C12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16540450 . . . . . . . ELECTROLYTIC 85° 470uF 35V . . . . . . . . . . . . . . . . . . . . . . . . .1

C9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16540900 . . . . . . . ELECTROLYTIC 85° 100uF 50V . . . . . . . . . . . . . . . . . . . . . . . . .1

C14 C15 C17 C18 C20 C21 C22 C23 . . . . . . . . . . 16541200. . . . . . . ELECTROLYTIC 85° 1000uF 35V . . . . . . . . . . . . . . . . . . . . . . . .8

DIODES

D1 D2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16621100 . . . . . . .U-FAST 1A 400V UF4004 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

ASSEMBLED PCB

AB7-2.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36726710 . . . . . . . LRx AMP-AB 2xTO247 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

PS2-P/N.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36726910 . . . . . . . LRx PWR SIDE 2 MOS P/N . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

REF. NO PART NO DESCRIPTION Q.TY

LRx 4.5 EXPLODED PCB PARTS LIST

1 10071100 9.5x11mm ADHESIVE FELT 1
2 10090080 40x40x20mm FAN WITH CONNECTOR 1
3 10096010 LRx - 40mm FAN SUPPORT 1
4 10096020 LRx FAN SUPPORT - ANGLE CLIP 4
5 12420140 De 6.4 di 3.2 h. 4.8mm PLASTIC SPACER 4
6 13540140 LRx BIAS-DRV THERMAL BRIDGE 4
7 46780740 ABLD.1 MODULE 4
8 46780750 CPU.1 MODULE 1
9 46780761 PSC.2 MODULE 1
10 10071190 8x18mm ADHESIVE FELT 4

REF. NO PART NO DESCRIPTION Q.TY

Rk = 12 Ohm

Part 1B page 1 of 1

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. PCB parts list - Rev. = .1 page from 1 to 1

Table of the last upgrading revisions

UPGRADING REVISIONS

PART 1

ELECTRONIC PART

PART 2

MECHANICAL PART

SECT. B

Mainboard

Rk = 12 Ohm

SECT. G

Comp. Pin-out

SECT. A - Exploded views

and parts list

Rev. A

SECT. C
PS2-P/N

SECT. D

AB7-2

SECT. F

PART 3

Technical Notes

Technical

Notes

PS2.1

ABLD.1

4.5-C.1

PSC.2

CPU.1

Rev. A Rev. A

ABLD

CPU

PSC

SECT. E
Controls

AB7-2.1

COPYRIGHT
This drawing/specification is released on condition that it
is not copied, printed or given to thirds without previous
written consent by

S. Regina Km. 3,500 - Marignano - 62018 Potenza Picena (MC)

Tel. [phone] Fax [phone]

audison

TS:

Sheet description: Product:

PCB code: Date: Sheet:

Type: Rev/Rk:

POWER SIDE POSITIVE

LRx2-NEW

16726910 B 30/jun/2005 1 OF 2

PS2

.1

BAF152B

COPYRIGHT
This drawing/specification is released on condition that it
is not copied, printed or given to thirds without previous
written consent by

S. Regina Km. 3,500 - Marignano - 62018 Potenza Picena (MC)

Tel. [phone] Fax [phone]

audison

TS:

Sheet description: Product:

PCB code: Date: Sheet:

Type: Rev/Rk:

POWER SIDE NEGATIVE

LRx2-NEW

16726910 B 30/jun/2005 2 OF 2

PS2

.1

BAF152B

COPYRIGHT
This drawing/specification is released on condition that it
is not copied, printed or given to thirds without previous
written consent by

S. Regina Km. 3,500 - Marignano - 62018 Potenza Picena (MC)

Tel. [phone] Fax [phone]

audison

TS:

Sheet description: Product:

PCB code: Date: Sheet:

Type: Rev/Rk:

COMPONENTS LAY-OUT

LRx2

16726910 B 18/oct/2005 1 OF 1

PS2-P/N

.1

BAC161C

PS2-P/N.1 MODULE PCB PARTS LIST

Revision .1

Part 1C page 1 of 1

MECHANICAL PARTS

DS101. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14244000. . . . . . . . . TEMPERATURE SENSOR SUPPORT . . . . . . . . . . . . . . . . . .1

CONNECTION WIRE AND CONNECTORS

J1 J2 J3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15232720. . . . . . . . . 2mm RIGHT ANGLE PIN HEADER 08+08 CONTACT . . . . . .3

J101 J102. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15232730. . . . . . . . . 2mm RIGHT ANGLE PIN HEADER 10+10 CONTACT . . . . . .2

RESISTORS

R1 R7 R101 R107 . . . . . . . . . . . . . . . . . . . . . . . . . . 16002500. . . . . . . . . 1/4 W 1% 21.5 Ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

R3 R8 R104 R108 . . . . . . . . . . . . . . . . . . . . . . . . . . 16004000. . . . . . . . . 1/4 W 1% 39.2 Ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

R9 R10 R109 R110 . . . . . . . . . . . . . . . . . . . . . . . . . 16004500. . . . . . . . . 1/4 W 1% 46.4 Ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

R4 R6 R103 R106 . . . . . . . . . . . . . . . . . . . . . . . . . . 16010500. . . . . . . . . 1/4 W 1% 464 Ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

R11 R12 R111. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16012500. . . . . . . . . 1/4 W 1% 1 KOhm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

R2 R5 R102 R105 . . . . . . . . . . . . . . . . . . . . . . . . . . 16014500. . . . . . . . . 1/4 W 1% 2.15 KOhm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

R13 R14 R15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16018500. . . . . . . . . 1/4 W 1% 10 KOhm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

CAPACITORS

C3 C4 C103 C104 . . . . . . . . . . . . . . . . . . . . . . . . . . 16430200. . . . . . . . . POLYESTER 1nF 63Vdc/40Vac P.5mm . . . . . . . . . . . . . . . . .4

C1 C2 C101 C102 . . . . . . . . . . . . . . . . . . . . . . . . . . 16430600. . . . . . . . . POLYESTER 4.7nF 63Vdc/40Vac P.5mm. . . . . . . . . . . . . . . .4

TRANSISTORS

Q1 Q4 Q101 Q102 . . . . . . . . . . . . . . . . . . . . . . . . . . 16606110. . . . . . . . . MOSFET TO220 IPP80N06S2-09. . . . . . . . . . . . . . . . . . . . . .4

Q2 Q3 Q6 Q103 Q104 . . . . . . . . . . . . . . . . . . . . . . . 16610100. . . . . . . . . PNP 45V 0.5A BC327 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Q105. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16611400 . . . . . . . . . BDW 94 C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Q5 Q7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16611800 . . . . . . . . . BDW 93 C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

DIODES

D1 D2 D101 D102 . . . . . . . . . . . . . . . . . . . . . . . . . . 16620000. . . . . . . . . SIGNAL 1N4148 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

DZ1 DZ2 DZ101 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16621400. . . . . . . . . ZENER 0.4 W 5% 15 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

D104. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16631460. . . . . . . . . UF ITO220 2x10A 200V A-C . . . . . . . . . . . . . . . . . . . . . . . . . .1

D4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16631480. . . . . . . . . UF ITO220 2x10A 200V K-C . . . . . . . . . . . . . . . . . . . . . . . . . .1

SENSORS

KTY101. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16832200. . . . . . . . . KTY 10-5 TEMPERATURE SENSOR . . . . . . . . . . . . . . . . . .1

REF. NO PART NO DESCRIPTION Q.TY

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. PCB parts list - Rev. = .1A page from 1 to 1

Table of the last upgrading revisions

UPGRADING REVISIONS

PART 1

ELECTRONIC PART

PART 2

MECHANICAL PART

SECT. B

Mainboard

Rk = 12 Ohm

SECT. G

Comp. Pin-out

SECT. A - Exploded views

and parts list

Rev. A

SECT. C
PS2-P/N

SECT. D

AB7-2

SECT. F

PART 3

Technical Notes

Technical

Notes

PS2.1

ABLD.1

4.5-C.1

PSC.2

CPU.1

Rev. A Rev. A

ABLD

CPU

PSC

SECT. E
Controls

Rk = 12 Ohm

Rev. B

PS2.1A

ABLD.1

4.5-C.1A

PSC.2

CPU.1

Rev. A

Rev. A

AB7-2.1

AB7-2.1

PS2-P/N.1A MODULE PCB PARTS LIST

Revision .1A

Part 1C page 1 of 1

MECHANICAL PARTS

DS101. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14244000. . . . . . . . . . . TEMPERATURE SENSOR SUPPORT . . . . . . . . . . . . . . . .1

CONNECTION WIRE AND CONNECTORS

J1 J2 J3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15232720. . . . . . . . . . . 2mm RIGHT ANGLE PIN HEADER 08+08 CONTACT . . . .3

J101 J102. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15232730. . . . . . . . . . . 2mm RIGHT ANGLE PIN HEADER 10+10 CONTACT . . . .2

RESISTORS

R1 R4 R6 R7 R101 R103 R106 R107 . . . . . . . . . . . 16002500. . . . . . . . . . . 1/4 W 1% 21.5 Ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

R3 R8 R104 R108 . . . . . . . . . . . . . . . . . . . . . . . . . . 16010000. . . . . . . . . . . 1/4 W 1% 383 Ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

R11 R12 R111. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16012500. . . . . . . . . . . 1/4 W 1% 1 KOhm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

R13 R14 R15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16018500. . . . . . . . . . . 1/4 W 1% 10 KOhm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

CAPACITORS

C1 C2 C101 C102 . . . . . . . . . . . . . . . . . . . . . . . . . . 16430600. . . . . . . . . . . POLYESTER 4.7nF 63Vdc/40Vac P.5mm. . . . . . . . . . . . . .4

TRANSISTORS

Q1 Q4 Q101 Q102 . . . . . . . . . . . . . . . . . . . . . . . . . . 16606110. . . . . . . . . . . MOSFET TO220 IPP80N06S2-09. . . . . . . . . . . . . . . . . . . .4

Q2 Q3 Q6 Q103 Q104 . . . . . . . . . . . . . . . . . . . . . . . 16610100. . . . . . . . . . . PNP 45V 0.5A BC327 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Q105. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16611400 . . . . . . . . . . . BDW 94 C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Q5 Q7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16611800 . . . . . . . . . . . BDW 93 C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

DIODES

D1 D2 D6 D7 D101 D102 D106 D107 . . . . . . . . . . . 16620000. . . . . . . . . . . SIGNAL 1N4148 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

DZ1 DZ2 DZ101 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16621400. . . . . . . . . . . ZENER 0.4W 5% 15 V . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

DZ3 DZ4 DZ102 DZ103 . . . . . . . . . . . . . . . . . . . . . . 16621700. . . . . . . . . . . ZENER 1W 39V 5% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

D104. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16631460. . . . . . . . . . . UF ITO220 2x10A 200V A-C . . . . . . . . . . . . . . . . . . . . . . . .1

D4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16631480. . . . . . . . . . . UF ITO220 2x10A 200V K-C. . . . . . . . . . . . . . . . . . . . . . . .1

SENSORS

KTY101. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16832200. . . . . . . . . . . TEMPERATURE SENSOR KTY 10-5 . . . . . . . . . . . . . . . . .1

REF. NO PART NO DESCRIPTION Q.TY

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. AB7-2.1 PCB parts list - Rev. = .1 page from 1 to 1

Table of the last upgrading revisions

UPGRADING REVISIONS

PART 1

ELECTRONIC PART

PART 2

MECHANICAL PART

SECT. B

Mainboard

Rk = 12 Ohm

SECT. G

Comp. Pin-out

SECT. A - Exploded views

and parts list

Rev. A

SECT. C
PS2-P/N

SECT. D

AB7-2

SECT. F

PART 3

Technical Notes

Technical

Notes

PS2.1

ABLD.1

4.5-C.1

PSC.2

CPU.1

Rev. A Rev. A

ABLD

CPU

PSC

SECT. E
Controls

AB7-2.1

COPYRIGHT
This drawing/specification is released on condition that it
is not copied, printed or given to thirds without previous
written consent by

S. Regina Km. 3,500 - Marignano - 62018 Potenza Picena (MC)

Tel. [phone] Fax [phone]

audison

TS:

Sheet description: Product:

PCB code: Date: Sheet:

Type: Rev/Rk:

Modul POWER AMPLIFIER 2xTO247

LRx.1

16726710 B 04/apr/2006 1 OF 1

AB7-2

.1

BAF149B

COPYRIGHT
This drawing/specification is released on condition that it
is not copied, printed or given to thirds without previous
written consent by

S. Regina Km. 3,500 - Marignano - 62018 Potenza Picena (MC)

Tel. [phone] Fax [phone]

audison

TS:

Sheet description: Product:

PCB code: Date: Sheet:

Type: Rev/Rk:

COMPONENTS LAY-OUT

LRx2

16726710 B 18/oct/2005 1 OF 1

AB7-2

.1

BAC158C

AB7- 2.1 MODULE PCB PARTS LIST

Revision .1

Part 1D page 2 of 2

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16000000. . . . . . . . . . . 1/4W 1% 1 Ohm (MRS25). . . . . . . . . . . . . . . . . . . . . . . . . .2

R4 R7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16006500. . . . . . . . . . . 1/4 W 1% 100 Ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

R2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16008500. . . . . . . . . . . 1/4 W 1% 215 Ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

R9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16012500. . . . . . . . . . . 1/4 W 1% 1 KOhm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

R3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16016000. . . . . . . . . . . 1/4 W 1% 3.83 KOhm . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

R5 R8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16184980. . . . . . . . . . . WIRE - 3W 5% 0.15 Ohm . . . . . . . . . . . . . . . . . . . . . . . . .2

TRIMMER

TRM1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16360500. . . . . . . . . . . CARBON 5x5 4.7KOhm . . . . . . . . . . . . . . . . . . . . . . . . . . .1

TRANSISTORS

Q3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16600200. . . . . . . . . . . NPN TO92 MPSA14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Q4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16601100 . . . . . . . . . . . PNP ATV 2SB1236A-Q . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Q2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16601120 . . . . . . . . . . . NPN ATV 2SD1857A-Q. . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Q1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16614650. . . . . . . . . . . NPN TO247 FJA4310-O 10A 120V. . . . . . . . . . . . . . . . . . .1

Q5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16614750. . . . . . . . . . . PNP TO247 FJA4210-O 10A 120V . . . . . . . . . . . . . . . . . . .1

LRx 4.5 - Service Manual - First Version

PART 1: ELECTRONIC PART

Section E : Controls Modules

First Version: Rev. = .1

1. LRx 4.5 - C Electrical diagrams - Rev. = .1 sheet from 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

UPGRADING REVISIONS

PART 1

ELECTRONIC PART

PART 2

MECHANICAL PART

SECT. B

Mainboard

Rk = 12 Ohm

SECT. G

Comp. Pin-out

SECT. A - Exploded views

and parts list

Rev. A

SECT. C
PS2-P/N

SECT. D

AB7-2

SECT. F

PART 3

Technical Notes

Technical

Notes

PS2.1

ABLD.1

4.5-C.1

PSC.2

CPU.1

Rev. A Rev. A

ABLD

CPU

PSC

SECT. E
Controls

AB7-2.1

LRx 4.5 - C.1 PCB PARTS LIST

Revision .1

Part 1E page 1 of 2

REF. NO PART NO DESCRIPTION Q.TY

MECHANICAL PARTS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10023520. . . . . . . LRx SPACERS for 4 LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

CONNECTION WIRE AND CONNECTORS

J1 J2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15231742. . . . . . . 2.54mm STRAIGHT PIN HEADER 6+6 CONTACT . . . . . . . . . .2

J3 J4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15235870. . . . . . . 2.54mm STR. FEMALE H. 16 CONTACT BOTTOM ENTRY . . .2

LOGO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15237120. . . . . . . 2mm PCB CONNECTOR 2 WAY . . . . . . . . . . . . . . . . . . . . . . . .1

SW3 SW4 SW7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15310411. . . . . . . SLIDE SWITCH V. 2 POLES - 2 POSITIONS. . . . . . . . . . . . . . .3

SW2 SW5 SW6 SW8 . . . . . . . . . . . . . . . . . . . . . . . . 15310421. . . . . . . SLIDE SWITCH V. 4 POLES - 2 POSITIONS. . . . . . . . . . . . . . .4

SW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15310431. . . . . . . SLIDE SWITCH V. 6 POLES - 2 POSITIONS. . . . . . . . . . . . . . .1

SW9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15310450. . . . . . . SLIDE SWITCH V. 4 POLES - 3 POSITIONS. . . . . . . . . . . . . . .1

POTENTIOMETERS

P3 P4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16310100. . . . . . . POT. 14mm 2xB22K LIN L15x6 VER . . . . . . . . . . . . . . . . . . . . .2

P2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16310200. . . . . . . POT. 14mm 4xC50K ALOG L20x6 VER. . . . . . . . . . . . . . . . . . .1

P1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16310210. . . . . . . POT. 14mm 2xC50K+2xC20K ALOG L20x6 VER. . . . . . . . . . . .1

RESISTORS

R82 R83 R86 R87 R115 R116 R117 R118 R122 . . . 16343600 . . . . . . . SMD 1/10W 0805 100 Ohm 100V 5% . . . . . . . . . . . . . . . . . . 16

R123 R124 R125 R127 R128 R131 R132

R1 R2 R119 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16344400. . . . . . . SMD 1/10W 0805 470 Ohm 100V 5% . . . . . . . . . . . . . . . . . . . .3

R12 R13 R19 R20 R42 R65 R102 R103 . . . . . . . . . 16344800. . . . . . . SMD 1/10W 0805 1 KOhm 100V 5% . . . . . . . . . . . . . . . . . . . . .8

R84 R85 R88 R89 . . . . . . . . . . . . . . . . . . . . . . . . . . 16345000. . . . . . . SMD 1/10W 0805 1.5 KOhm 100V 5%. . . . . . . . . . . . . . . . . . . .4

R38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16345100. . . . . . . SMD 1/10W 0805 1.8 KOhm 100V 5% . . . . . . . . . . . . . . . . . . . .1

R31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16345200. . . . . . . SMD 1/10W 0805 2.2 KOhm 100V 5% . . . . . . . . . . . . . . . . . . . .1

R45 R46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16345300. . . . . . . SMD 1/10W 0805 2.7 KOhm 100V 5% . . . . . . . . . . . . . . . . . . . .2

R33 R34 R60 R61 . . . . . . . . . . . . . . . . . . . . . . . . . . 16345400. . . . . . . SMD 1/10W 0805 3.3 KOhm 100V 5%. . . . . . . . . . . . . . . . . . . .4

R4 R18 R57 R58 R71 R72. . . . . . . . . . . . . . . . . . . . 16345500. . . . . . . SMD 1/10W 0805 3.9 KOhm 100V 5%. . . . . . . . . . . . . . . . . . . .6

R6 R11 R21 R37 R40 R48 R69 . . . . . . . . . . . . . . . . 16345600. . . . . . . SMD 1/10W 0805 4.7 KOhm 100V 5%. . . . . . . . . . . . . . . . . . . .7

R55 R56 R90 R100 R101 R105. . . . . . . . . . . . . . . . 16345700. . . . . . . SMD 1/10W 0805 5.6 KOhm 100V 5%. . . . . . . . . . . . . . . . . . . .6

R7 R8 R10 R14 R29 R30 R32 R35 R51 R52 . . . . . 16346000. . . . . . . SMD 1/10W 0805 10 KOhm 100V 5% . . . . . . . . . . . . . . . . . . 20

R53 R54 R59 R62 R63 R64 R68 R80 R81 R134

R3 R126 R129 R130 R133. . . . . . . . . . . . . . . . . . . . 16346200. . . . . . . SMD 1/10W 0805 15 KOhm 100V 5% . . . . . . . . . . . . . . . . . . . .5

R9 R15 R16 R23 R25 R28 R43 R44 R49 R50 . . . . 16346400. . . . . . . SMD 1/10W 0805 22 KOhm 100V 5% . . . . . . . . . . . . . . . . . . 18

R77 R79 R92 R95 R98 R99 R104 R106

R24 R26 R74 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16346500. . . . . . . SMD 1/10W 0805 27 KOhm 100V 5% . . . . . . . . . . . . . . . . . . . .3

R73 R96 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16346600. . . . . . . SMD 1/10W 0805 33 KOhm 100V 5% . . . . . . . . . . . . . . . . . . . .2

R5 R22 R27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16346700. . . . . . . SMD 1/10W 0805 39 KOhm 100V 5% . . . . . . . . . . . . . . . . . . . .3

R66 R97 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16346800. . . . . . . SMD 1/10W 0805 47 KOhm 100V 5% . . . . . . . . . . . . . . . . . . . .2

R67. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16346900. . . . . . . SMD 1/10W 0805 56 KOhm 100V 5% . . . . . . . . . . . . . . . . . . . .1

R17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16346950. . . . . . . SMD 1/10W 0805 68 KOhm 100V 5% . . . . . . . . . . . . . . . . . . . .1

R36 R39 R41 R47 R70. . . . . . . . . . . . . . . . . . . . . . . 16347600. . . . . . . SMD 1/10W 0805 270 KOhm 100V 5% . . . . . . . . . . . . . . . . . . .5

R75 R76 R78 R91 R93 R94 R107 R108 R109 . . . . 16353770. . . . . . . SMD 1/10W 0805 4.64 KOhm 100V 1% . . . . . . . . . . . . . . . . . 16

R110 R111 R112 R113 R114 R120 R121

CAPACITORS

C9 C12 C27 C29 . . . . . . . . . . . . . . . . . . . . . . . . . . . 16430200. . . . . . . POLYESTER 1nF 63Vdc/40Vac P.5mm . . . . . . . . . . . . . . . . . . .4

C10 C11 C28 C30 . . . . . . . . . . . . . . . . . . . . . . . . . . 16430800. . . . . . . POLYESTER 6.8nF 63Vdc/40Vac P.5mm. . . . . . . . . . . . . . . . . .4

C13 C16 C24 C26 . . . . . . . . . . . . . . . . . . . . . . . . . . 16430900. . . . . . . POLYESTER 8.2nF 63Vdc/40Vac P.5mm. . . . . . . . . . . . . . . . . .4

C17 C18 C21 C22 . . . . . . . . . . . . . . . . . . . . . . . . . . 16431900. . . . . . . POLYESTER 68nF 63Vdc/40Vac P.5mm . . . . . . . . . . . . . . . . . .4

C14 C15 C23 C25 . . . . . . . . . . . . . . . . . . . . . . . . . . 16431950. . . . . . . POLYESTER 82nF 63Vdc/40Vac P.5mm . . . . . . . . . . . . . . . . . .4

C32 C33 C35 C36 C37 C38. . . . . . . . . . . . . . . . . . . 16432280. . . . . . . POLYESTER 220nF 63Vdc/40Vac P.5mm . . . . . . . . . . . . . . . . .6

C59 C66 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16570032. . . . . . . CERAMIC COG 0805 22pF 50V 5% . . . . . . . . . . . . . . . . . . . . .2

C71 C73 C76 C78 . . . . . . . . . . . . . . . . . . . . . . . . . . 16570048. . . . . . . CERAMIC COG 0805 100pF 50V 5%. . . . . . . . . . . . . . . . . . . . .4

C49 C51 C64 C65 . . . . . . . . . . . . . . . . . . . . . . . . . . 16570052. . . . . . . CERAMIC COG 0805 150pF 50V 5%. . . . . . . . . . . . . . . . . . . . .4

C55 C57 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16570080. . . . . . . CERAMIC X7R 0805 2.2nF 50V 10% . . . . . . . . . . . . . . . . . . . . .2

C45 C46 C47 C48 C50 C52 C53 C54 C56 C58. . . . 16570224. . . . . . . CERAMIC Y5V 0805 100nF 50V . . . . . . . . . . . . . . . . . . . . . . 27

C60 C61 C62 C63 C67 C68 C69 C70 C72 C74
C75 C77 C79 C80 C81 C82 C83

C3 C4 C5 C6 C7 C8 C19 C20 C31 C34 C39. . . . . . 16570540. . . . . . . ELECTROLYTIC 10uF 16V 4x5.3 . . . . . . . . . . . . . . . . . . . . . . 16

C40 C41 C42 C43 C44

C1 C2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16570560. . . . . . . ELECTROLYTIC 47uF 16V 6.3x5.3 . . . . . . . . . . . . . . . . . . . . . .2

TRANSISTORS

Q3 Q4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16615300. . . . . . . NPN SMD SOT23 2SD2114K . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Q1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16615800. . . . . . . NPN SMD SOT23 BC850C. . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Q2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16616000. . . . . . . PNP SMD SOT23 BC860C. . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

LRx 4.5 - C.1 PCB PARTS LIST

Revision .1

Part 1E page 2 of 2

REF. NO PART NO DESCRIPTION Q.TY

DIODES

D3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16635401. . . . . . . DIFFUSED RED LED 3mm 12.6 mcd . . . . . . . . . . . . . . . . . . . . .1

D2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16635501. . . . . . . DIFFUSED GREEN LED 3mm 12.6 mcd . . . . . . . . . . . . . . . . . .1

D9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16635510. . . . . . . DIFFUSED YELLOW LED 3mm . . . . . . . . . . . . . . . . . . . . . . . .1

D4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16635521. . . . . . . DIFFUSED ORANGE LED 3mm . . . . . . . . . . . . . . . . . . . . . . . .1

D1 D14 D15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16637000. . . . . . . SIGNAL SOD80 150mA 75V /4148. . . . . . . . . . . . . . . . . . . . . . .3

D5 D6 D7 D8 D10 D11 D12 D13 . . . . . . . . . . . . . . . 16637030. . . . . . . DUAL SIGNAL SMD SOT23 70V . . . . . . . . . . . . . . . . . . . . . . . .8

ICS

U2 U3 U4 U5 U7 U8 U9 U10 U11 U12 U13. . . . . . . 16691560. . . . . . . SMD SO08 NJM 4580E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

U14 U15

U1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16691580. . . . . . . SMD SO16 LM13700M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

PHOTOCOUPLER

U6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16692800. . . . . . . PHOTOTRANSISTOR SO8 (4 pin) . . . . . . . . . . . . . . . . . . . . . .1

THERMISTORS

PTC1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16831000. . . . . . . PTC 20V 0.15A COMM. 0.3A . . . . . . . . . . . . . . . . . . . . . . . . . . .1

LRx 4.5 - Service Manual - Upgrading Version

PART 1: ELECTRONIC PART

Section E : Controls Modules

Upgrading Version: Rev. = .1A

1. LRx 4.5 - C Electrical diagrams - Rev. = .1A sheet from 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

UPGRADING REVISIONS

PART 1

ELECTRONIC PART

PART 2

MECHANICAL PART

SECT. B

Mainboard

Rk = 12 Ohm

SECT. G

Comp. Pin-out

SECT. A - Exploded views

and parts list

Rev. A

SECT. C
PS2-P/N

SECT. D

AB7-2

SECT. F

PART 3

Technical Notes

Technical

Notes

PS2.1

ABLD.1

4.5-C.1

PSC.2

CPU.1

Rev. A Rev. A

ABLD

CPU

PSC

SECT. E
Controls

Rk = 12 Ohm

Rev. B

PS2.1A

ABLD.1

4.5-C.1A

PSC.2

CPU.1

Rev. A

Rev. A

AB7-2.1

AB7-2.1

LRx 4.5 - C.1A PCB PARTS LIST

Revision .1A

Part 1E page 1 of 2

REF. NO PART NO DESCRIPTION Q.TY

MECHANICAL PARTS

.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10023520. . . . . . . LRx SPACERS for 4 LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

CONNECTION WIRE AND CONNECTORS

J1 J2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15231742. . . . . . . 2.54mm STRAIGHT PIN HEADER 6+6 CONTACT . . . . . . . . . .2

J3 J4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15235870. . . . . . . 2.54mm STR. FEMALE H. 16 CONTACT BOTTOM ENTRY . . .2

LOGO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15237120. . . . . . . 2mm PCB CONNECTOR 2 WAY . . . . . . . . . . . . . . . . . . . . . . . .1

SW3 SW4 SW7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15310411. . . . . . . SLIDE SWITCH V. 2 POLES - 2 POSITIONS. . . . . . . . . . . . . . .3

SW2 SW5 SW6 SW8 . . . . . . . . . . . . . . . . . . . . . . . . 15310421. . . . . . . SLIDE SWITCH V. 4 POLES - 2 POSITIONS. . . . . . . . . . . . . . .4

SW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15310431. . . . . . . SLIDE SWITCH V. 6 POLES - 2 POSITIONS. . . . . . . . . . . . . . .1

SW9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15310450. . . . . . . SLIDE SWITCH V. 4 POLES - 3 POSITIONS. . . . . . . . . . . . . . .1

POTENTIOMETERS

P3 P4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16310100. . . . . . . POT. 14mm 2xB22K LIN L15x6 VER . . . . . . . . . . . . . . . . . . . . .2

P2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16310200. . . . . . . POT. 14mm 4xC50K ALOG L20x6 VER. . . . . . . . . . . . . . . . . . .1

P1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16310210. . . . . . . POT. 14mm 2xC50K+2xC20K ALOG L20x6 VER. . . . . . . . . . . .1

RESISTORS

R82 R83 R86 R87 R115 R116 R117 R118 R122 . . . 16343600 . . . . . . . SMD 1/10W 0805 100 Ohm 100V 5% . . . . . . . . . . . . . . . . . . 16

R123 R124 R125 R127 R128 R131 R132

R1 R2 R119 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16344400. . . . . . . SMD 1/10W 0805 470 Ohm 100V 5% . . . . . . . . . . . . . . . . . . . .3

R12 R13 R19 R20 R42 R65 R102 R103 . . . . . . . . . 16344800. . . . . . . SMD 1/10W 0805 1 KOhm 100V 5% . . . . . . . . . . . . . . . . . . . . .8

R84 R85 R88 R89 . . . . . . . . . . . . . . . . . . . . . . . . . . 16345000. . . . . . . SMD 1/10W 0805 1.5 KOhm 100V 5%. . . . . . . . . . . . . . . . . . . .4

R38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16345100. . . . . . . SMD 1/10W 0805 1.8 KOhm 100V 5% . . . . . . . . . . . . . . . . . . . .1

R31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16345200. . . . . . . SMD 1/10W 0805 2.2 KOhm 100V 5% . . . . . . . . . . . . . . . . . . . .1

R45 R46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16345300. . . . . . . SMD 1/10W 0805 2.7 KOhm 100V 5% . . . . . . . . . . . . . . . . . . . .2

R33 R34 R60 R61 . . . . . . . . . . . . . . . . . . . . . . . . . . 16345400. . . . . . . SMD 1/10W 0805 3.3 KOhm 100V 5%. . . . . . . . . . . . . . . . . . . .4

R4 R18 R57 R58 R71 R72. . . . . . . . . . . . . . . . . . . . 16345500. . . . . . . SMD 1/10W 0805 3.9 KOhm 100V 5%. . . . . . . . . . . . . . . . . . . .6

R6 R11 R21 R37 R40 R48 R69 . . . . . . . . . . . . . . . . 16345600. . . . . . . SMD 1/10W 0805 4.7 KOhm 100V 5%. . . . . . . . . . . . . . . . . . . .7

R55 R56 R90 R100 R101 R105. . . . . . . . . . . . . . . . 16345700. . . . . . . SMD 1/10W 0805 5.6 KOhm 100V 5%. . . . . . . . . . . . . . . . . . . .6

R7 R8 R10 R14 R29 R30 R32 R35 R51 R52 . . . . . 16346000. . . . . . . SMD 1/10W 0805 10 KOhm 100V 5% . . . . . . . . . . . . . . . . . . 20

R53 R54 R59 R62 R63 R64 R68 R80 R81 R134

R3 R126 R129 R130 R133. . . . . . . . . . . . . . . . . . . . 16346200. . . . . . . SMD 1/10W 0805 15 KOhm 100V 5% . . . . . . . . . . . . . . . . . . . .5

R9 R15 R16 R23 R25 R28 R43 R44 R49 R50 . . . . 16346400. . . . . . . SMD 1/10W 0805 22 KOhm 100V 5% . . . . . . . . . . . . . . . . . . 18

R77 R79 R92 R95 R98 R99 R104 R106

R24 R26 R74 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16346500. . . . . . . SMD 1/10W 0805 27 KOhm 100V 5% . . . . . . . . . . . . . . . . . . . .3

R73 R96 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16346600. . . . . . . SMD 1/10W 0805 33 KOhm 100V 5% . . . . . . . . . . . . . . . . . . . .2

R5 R22 R27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16346700. . . . . . . SMD 1/10W 0805 39 KOhm 100V 5% . . . . . . . . . . . . . . . . . . . .3

R66 R97 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16346800. . . . . . . SMD 1/10W 0805 47 KOhm 100V 5% . . . . . . . . . . . . . . . . . . . .2

R67. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16346900. . . . . . . SMD 1/10W 0805 56 KOhm 100V 5% . . . . . . . . . . . . . . . . . . . .1

R17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16346950. . . . . . . SMD 1/10W 0805 68 KOhm 100V 5% . . . . . . . . . . . . . . . . . . . .1

R36 R39 R41 R47 R70. . . . . . . . . . . . . . . . . . . . . . . 16347600. . . . . . . SMD 1/10W 0805 270 KOhm 100V 5% . . . . . . . . . . . . . . . . . . .5

R75 R76 R78 R91 R93 R94 R107 R108 R109 . . . . 16353770. . . . . . . SMD 1/10W 0805 4.64 KOhm 100V 1% . . . . . . . . . . . . . . . . . 16

R110 R111 R112 R113 R114 R120 R121

CAPACITORS

C9 C12 C27 C29 . . . . . . . . . . . . . . . . . . . . . . . . . . . 16430200. . . . . . . POLYESTER 1nF 63Vdc/40Vac P.5mm . . . . . . . . . . . . . . . . . . .4

C10 C11 C28 C30 . . . . . . . . . . . . . . . . . . . . . . . . . . 16430800. . . . . . . POLYESTER 6.8nF 63Vdc/40Vac P.5mm. . . . . . . . . . . . . . . . . .4

C13 C16 C24 C26 . . . . . . . . . . . . . . . . . . . . . . . . . . 16430900. . . . . . . POLYESTER 8.2nF 63Vdc/40Vac P.5mm. . . . . . . . . . . . . . . . . .4

C17 C18 C21 C22 . . . . . . . . . . . . . . . . . . . . . . . . . . 16431900. . . . . . . POLYESTER 68nF 63Vdc/40Vac P.5mm . . . . . . . . . . . . . . . . . .4

C14 C15 C23 C25 . . . . . . . . . . . . . . . . . . . . . . . . . . 16431950. . . . . . . POLYESTER 82nF 63Vdc/40Vac P.5mm . . . . . . . . . . . . . . . . . .4

C32 C33 C35 C36 C37 C38. . . . . . . . . . . . . . . . . . . 16432280. . . . . . . POLYESTER 220nF 63Vdc/40Vac P.5mm . . . . . . . . . . . . . . . . .6

C59 C66 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16570032. . . . . . . CERAMIC COG 0805 22pF 50V 5% . . . . . . . . . . . . . . . . . . . . .2

C71 C73 C76 C78 . . . . . . . . . . . . . . . . . . . . . . . . . . 16570048. . . . . . . CERAMIC COG 0805 100pF 50V 5%. . . . . . . . . . . . . . . . . . . . .4

C49 C51 C64 C65 . . . . . . . . . . . . . . . . . . . . . . . . . . 16570052. . . . . . . CERAMIC COG 0805 150pF 50V 5%. . . . . . . . . . . . . . . . . . . . .4

C55 C57 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16570080. . . . . . . CERAMIC X7R 0805 2.2nF 50V 10% . . . . . . . . . . . . . . . . . . . . .2

C45 C46 C47 C48 C50 C52 C53 C54 C56 C58. . . . 16570224. . . . . . . CERAMIC Y5V 0805 100nF 50V . . . . . . . . . . . . . . . . . . . . . . 27

C60 C61 C62 C63 C67 C68 C69 C70 C72 C74
C75 C77 C79 C80 C81 C82 C83

C3 C4 C5 C6 C7 C8 C19 C20 C31 C34 C39. . . . . . 16570540. . . . . . . ELECTROLYTIC 10uF 16V 4x5.3 . . . . . . . . . . . . . . . . . . . . . . 16

C40 C41 C42 C43 C44

C1 C2 C84 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16570560. . . . . . . ELECTROLYTIC 47uF 16V 6.3x5.3 . . . . . . . . . . . . . . . . . . . . . .3

TRANSISTORS

Q3 Q4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16615300. . . . . . . NPN SMD SOT23 2SD2114K . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Q1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16615800. . . . . . . NPN SMD SOT23 BC850C. . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Q2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16616000. . . . . . . PNP SMD SOT23 BC860C. . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

LRx 4.5 - C.1A PCB PARTS LIST

Revision .1A

Part 1E page 2 of 2

REF. NO PART NO DESCRIPTION Q.TY

DIODES

D3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16635401. . . . . . . DIFFUSED RED LED 3mm 12.6 mcd . . . . . . . . . . . . . . . . . . . . .1

D2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16635501. . . . . . . DIFFUSED GREEN LED 3mm 12.6 mcd . . . . . . . . . . . . . . . . . .1

D9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16635510. . . . . . . DIFFUSED YELLOW LED 3mm . . . . . . . . . . . . . . . . . . . . . . . .1

D4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16635521. . . . . . . DIFFUSED ORANGE LED 3mm . . . . . . . . . . . . . . . . . . . . . . . .1

D1 D14 D15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16637000. . . . . . . SIGNAL SOD80 150mA 75V /4148. . . . . . . . . . . . . . . . . . . . . . .3

D5 D6 D7 D8 D10 D11 D12 D13 . . . . . . . . . . . . . . . 16637030. . . . . . . DUAL SIGNAL SMD SOT23 70V . . . . . . . . . . . . . . . . . . . . . . . .8

ICS

U2 U3 U4 U5 U7 U8 U9 U10 U11 U12 U13. . . . . . . 16691560. . . . . . . SMD SO08 NJM 4580E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

U14 U15

U1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16691580. . . . . . . SMD SO16 LM13700M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

PHOTOCOUPLER

U6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16692800. . . . . . . PHOTOTRANSISTOR SO8 (4 pin) . . . . . . . . . . . . . . . . . . . . . .1

THERMISTORS

PTC1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16831000. . . . . . . PTC 20V 0.15A COMM. 0.3A . . . . . . . . . . . . . . . . . . . . . . . . . . .1

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. PSC Block diagrams - Rev. = .2 / .2A sheet from 1 to 1

Table of the last upgrading revisions

UPGRADING REVISIONS

PART 1

ELECTRONIC PART

PART 2

MECHANICAL PART

SECT. B

Mainboard

Rk = 12 Ohm

SECT. G

Comp. Pin-out

SECT. A - Exploded views

and parts list

Rev. A

SECT. C
PS2-P/N

SECT. D

AB7-2

SECT. F

PART 3

Technical Notes

Technical

Notes

PS2.1

ABLD.1

4.5-C.1

PSC.2

CPU.1

Rev. A Rev. A

ABLD

CPU

PSC

SECT. E
Controls

AB7-2.1

COPYRIGHT
This drawing/specification is released on condition that it
is not copied, printed or given to thirds without previous
written consent by

S. Regina Km. 3,500 - Marignano - 62018 Potenza Picena (MC)

Tel. [phone] Fax [phone]

audison

TS:

Sheet desription: Product:

code: Date: Sheet:

Type: Rev/Rk:

BLOCK DIAGRAM

LRx

36780740 / 41 / 42 28/oct/06 1 OF 1

ABLD

.1/.1A/.1B

-

ABLD.1/.1A/.1B

+VD

1

-VD

7

2

3

18

9

19

BS+

G-OUT

BS-

LIMIT

SENS-H

4

15

OUT

17

20

16

13

12

8

6

FB

+RAMP

-RAMP

IN

MUTE

G-IN

5

SENS-L

OVL

R-SENS

MUTE

Q5

Q7

Q10

Q11

Q9

Q1

Q3

Q8

CASCODE_H LIMIT

Q6

CASCODE_L

Differential
Amplifier

"A" class VOLTAGE

AMPLIFIER

Q2

OVERLOAD

Q2

Q4

COPYRIGHT
This drawing/specification is released on condition that it
is not copied, printed or given to thirds without previous
written consent by

S. Regina Km. 3,500 - Marignano - 62018 Potenza Picena (MC)

Tel. [phone] Fax [phone]

audison

TS:

Sheet desription: Product:

code: Date: Sheet:

Type: Rev/Rk:

BLOCK DIAGRAM

LRx

36780750 / 51 12/sep/06 1 OF 1

CPU

.1/.1A

-

CPU.1/.1A

VO: +12V +15V

-RAMP +RAMP

VM

IN_LIM

7
[J2]

10
[J2]

11
[J2]2[J1]

3 [J1]

10
[J1]

3 [J2]

5 [J2]

4 [J2]

1 [J2]

11

[J1]

AGND PWRGND

IN_DC

6 [J2]

C-REM

12 [J1]

IN_SCC

6 [J1]

IN_OVL

9 [J1]

PTC+

LIM

1 [J1]

8 [J2]

VEL1

LED_SCC

ENABLE

7 [J1]

LED_TH

2 [J2]

LED_OVL

UP_REM

9 [J2]

VEL2

-15V

8 [J1]12 [J2]

U3

µP

RAMP

FAN

DC SENSE

7805

Q3 Q2

Q1

+15V

U1

Q9

Q10

U2

POWER LIMIT

+15V

Q4

Q5

U1

+5V

MUTE

Q11

COPYRIGHT
This drawing/specification is released on condition that it
is not copied, printed or given to thirds without previous
written consent by

S. Regina Km. 3,500 - Marignano - 62018 Potenza Picena (MC)

Tel. [phone] Fax [phone]

audison

TS:

Sheet desription: Product:

code: Date: Sheet:

Type: Rev/Rk:

BLOCK DIAGRAM

LRx

36780761 / 62 28/oct/06 1 OF 1

PSC

.2/.2A

-

PSC.2/.2A

+VBFSERV

+VBF

2 [J2]1 [J2]6 [J1]

GATE1

4 [J1]

GATE2

9 [J2]

PIN3

1 [J1]

+VF

2 [J1]

-VF

11 [J2]

PWR
GND

PWR
GND

LIM

12 [J2]

LIMIT_TH

10 [J2]

10 [J1]

ENABLE

8 [J1]

C_REM

9 [J1]

UP_REM

6 [J2]

REMOTE

REMOTE_OUT

3 [J2]

TEMP1 TEMP2

11 [J1] 12 [J1] 3 [J1] 5 [J1]

Q8

Q2

Q7

Q6

U2

U1

Q1

Q5

Q4

Q9

7 [J2]

SPK_ON-

5 [J2]

SPK_ON+

8 [J2]

SPK_REM

7 [J1]

VO

4 [J2]

LED_ON

REMOTE

SPK

REMOTE IN

REMOTE

OUT

PWM

BUFFER

THERMAL FEEDBACK

POWER

OUT

FEEDBACK

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

UPGRADING REVISIONS

PART 1

ELECTRONIC PART

PART 2

MECHANICAL PART

SECT. B

Mainboard

Rk = 12 Ohm

SECT. G

Comp. Pin-out

SECT. A - Exploded views

and parts list

Rev. A

SECT. C
PS2-P/N

SECT. D

AB7-2

SECT. F

PART 3

Technical Notes

Technical

Notes

PS2.1

ABLD.1

4.5-C.1

PSC.2

CPU.1

Rev. A Rev. A

ABLD

CPU

PSC

SECT. E
Controls

AB7-2.1

Part 1G page 1 of 7

LRx SERIES COMPONENTS PIN-OUT: Leaded components

Rev. A

Case TO220

N channel mosfet transistor

Type Product name Marking code

PIN OUT

G: Gate
D: Drain
S: Source

(1) (2)

(3)

G D S

G D S

Switching power

Switching power

IPP80N06S2-09

IPP80N06S2-05

2N0609

2N0605

G D S

Switching power

IRFB33N15D

FB33N15D

G D S

Switching power

IRFB52N15D

FB52N15D

G D S

Switching power

IRFB61N15D

FB61N15D

G D S

Switching power

IRFB260N

FB260N

Ref.

A K A

Common Cathode

FFPF10U20DN

A

K

Power rectifier

BYT79-500

BYT79-500

S

G

D

N ch.

(2)(3)(1)

A: Anode
K: Cathode

Type Product name Marking code

PIN OUT

Ref.

(1) (2)

Single ultra fast power diodes

K A

Dual ultra fast power diodes

Type Product name Marking code

PIN OUT

F10U20DN

K A K

Common Anode

FFPF10U20DP

F10U20DP

(1) (2)

(3)

Ref.

Case TO220F (to insulate with thermo-conductive grease)

A

A

K

K

K

A

C. Cathode

C. Anode

(2)(3)(1)

A: Anode
K: Cathode

(2)(1)

NPN bipolar transistor

Ty

pe

Product name Marking code

PIN OUT

(1) (2)

(3)

B C E

B C E

Audio driver

Darlington

2SD2400A

BDW93C

-

BDW93

Ref

.

(2)(3)(1)

PNP bipolar transistor

Type Product name Marking code

PIN OUT

(1) (2)

(3)

B C E

B C E

Audio driver

Darlington

2SB1569A

BDW94C

-

BDW94

Ref.

NPN

PNP

E

B

C

E

B

C

A

K

Power rectifier

MUR1540

MUR1540

Part 1G page 2 of 7

LRx SERIES COMPONENTS PIN-OUT: Leaded components

Rev. A

B C

E

Audio power

FJA4310-O

J4310-

O

B C E

Audio power

FJA4210-O J4210-O

PNP bipolar transistor

(2)(1) (3)

(1) (2)

(3)

Type Product name Marking code

PIN OUT

Type Product name Marking code

PIN OUT

(1) (2)

(3)

B: Base
C: Collector
E: Emitte

r

NPN

PNP

E

B

C

E

B

C

NPN bipolar transisto

r

Ref.

Ref.

Case TO3P

Case TO126

(2)(3)(1)

Type Product name Marking code

PIN OUT

Ref.

(1) (2) (3)

NPN bipolar transistor

B: Base
C: Collector
E: Emitter

NPN

PNP

E

B

C

E

B

C

E C B

Audio driver BD681 BD681

(2)

(3)(1)

(2)(3)(1)

(1) (2)

(3)

C B E

E C B

E B

C

PIN OU

T

Audio preamplifier BC550C BC550C

Audio driver

BC639-16 BC639-16

Darlington

MPSA1

4 M

PSA1

4

E C B

PIN OUT

Audio driver BC640-16 BC640-16

(1) (2)

(3)

PNP bipolar transistor

Type Product name Marking code

Type Product name Marking code

NPN bipolar transistor

Ref.

Ref.

B: Base
C: Collector
E: Emitter

NPN

PNP

E

B

C

E

B

C

Case TO92

E C B

BC327 BC327

Audio preamplifie

r

Part 1G page 3 of 7

LRx SERIES COMPONENTS PIN-OUT: Leaded components

Rev. A

SLR-342VC3F

GL3PR8

-

A: Anode
K: Cathode

A K

Type Product name Marking code

PIN OUT

Red led

SLR-342MC3

F

GLK3KG

8

-

A K

Green le

d

Ref.

(1) (2)

Leds

A K

(2)

(1)

(1) (2)

PIN OUT

Type Product name Marking code

Diodes

Ref.

A: Anode
K: Cathode

A K

(2)(1)

UF4004 UF4004Ultra fast

A K

3mm cylinder type leds

Case DO-41 / DO-204AL

(2)(1) (3) (1)

(1) (2)

(3)

E C

B

PIN OU

T

Audio driver 2SD1857A-Q D1857A

E C B

PIN OUT

Audio driver 2SB1236A-Q B1236A

(1) (2)

(3)

Type Product name Marking code

Type Product name Marking code

PNP bipolar transistor

B: Base
C: Collector
E: Emitte

r

NPN bipolar transistor

Ref.

Ref.

NPN

PNP

E

B

C

E

B

C

Case ATV- TV2

SLR-342MC3F

GLK3KG

8

-

A K

Orange led

SLR-342MC3F

GLK3KG8

-

A K

Yellow led

(1) (2)

PIN OU

T

Type Product name Marking code

Zener diodes

Ref.

A: Anode
K: Cathode

A K

(2)(1)

BZX55C\15 SF14

ER102

500mW 15V

A K

Case DO-35 Glass

1N4148 1N4148General Purpose

A K

1N4754A -Zener 1W 39V

A K

Part 1G page 4 of 7

LRx SERIES COMPONENTS PIN-OUT: SMT components

Rev. A

LL4148 -

A: Anode
K: Cathode

A K

Type Product name Marking code

PIN OUT

General purpose
150mA 75V

BAV102
RLS245

FDLL 459/A

-

Ref.

A K

General Purpose
200mA 150V

(1) (2)

A K

(2)(1)

Diodes

Case SOD-80 / MiniMELF

PNP bipolar transisto

r

(1)

(2)

(3)

(1) (2)

(3)

B C E

B C E

B C E

PIN OUT

Signal BC817-25 6B

Signal BC850C -

Muting 2SD2114K BBV

B C E

Audio preamplifier 2SC3906K TR

B C E

B C E

PIN OUT

Signal BC807-25

5B

Signal BC860C -

(1) (2)

(3)

Type Product name Marking code

Type Product name Marking code

Signal diodes

A S K

PIN OUT

Signal BAV99 A7

(1) (2)

(3)

Application Product name Marking code

A: Anode
K: Cathode
S

: Series

S

K

A

B: Base
C: Collector
E: Emitter

Ref.

NPN bipolar transistor

Ref.

Ref.

NPN

PNP

E

B

C

E

B

C

Case SOT23

Type Product name Marking code

Diodes

Ref.

PIN OUT

Ultra fast rectifier
1A 200V

ES1D ED

A K

(1) (2)

A: Anode
K: Cathode

(1) (2)

(2)(1)

Case DO-214AC

BZV55C6V

8 -

A K

Zener
6V8 5%

Part 1G page 5 of 7

LRx SERIES COMPONENTS PIN-OUT: SMT components

Rev. A

(4)

(2)(3) (1)

(5)

(6)

Tr1

Tr2

(4)

(2)(3) (1)

(5)

(6)

(4)

(2)(3) (1)

(5)

(6)

Tr1

Tr2

PIN OUT

PIN OUT

(1): Tr1 collector (2): Tr2 emitter (3): Tr2 collector
(4): Tr2 base (5): Tr1 base (6): Tr1 emitter

Type Product name Marking code

Type Product name Marking code

PNP bipolar dual transistor

NPN bipolar dual transistor

Ref.

Dual audio preamplifier

IMX3 X3

See DWG.

Ref.

See DWG.

Dual audio preamplifier

IMT3A T3

NPN

PNP

Case SMT6

Type Product name Marking code

1

4

8

5

Linear ICS

Ref.

Dual op amp BA4580F 4580

Case SO8

Dual audio preamplifier

IMX8 X8

See DWG.

See DWG.

Dual audio preamplifier

IMT4 T4

Dual comparator LM393 393

Pin configuration

1

1

2

4

3

2

Anode

Cathode

Collector

Emitter

4

3

Type Product name Marking code

Optocoupler PS2701-1

PC357NT

TLP181

PS2701-1
PC357NT

P181

Optoelectronics component

Ref.

Case SO8 (4 pins)

(1)

(2)

(3)

Switching dual diodes

A K

PIN OUT

Signal BAV70W KJA

(1) (2)

A

(3)

Application Product name Marking code

A: Anode
K: Cathode

K

A

A

Ref.

Case SOT323

Part 1G page 6 of 7

LRx SERIES COMPONENTS PIN-OUT: SMT components

Rev. A

1

8

16

9

Case SO16

LM13700M Pin configuration

Type Product name Marking code

ICS

Ref.

PWM driver

TL494I

D T

L494I

D

Dual operational
transconductance
amplifier

LM13700M LM13700M

TL494ID Pin configuration

Case SOIC20

Type Product name Marking code

ICS

Ref.

Microcontroller ATtiny26-SU ATTINY26-S

1

7

14

8

Pin configuratio

n

1

2

3

4

OUT1

-IN1

+IN1

+V

OUT4

-IN4

+IN4

-V

14

13

12

11

5

6

7

+IN2

-IN2

OUT2

+IN3

-IN3

OUT3

10

9

8

1 4

2

3

Type Product name Marking code

Quad op amps LM324 324

ICS

Ref.

1N

Case SO14

1

10

20

11

Part 1G page 7 of 7

LRx SERIES COMPONENTS PIN-OUT: SMT components

Rev. A

Case D PACK

B C

E

Epitaxial planar
transistor

KTC2983D

NPN transistor

Type Product name Marking code

PIN OUT

C2983

(1) (2)

(3)

Ref.

B C E

KTA1225D

PNP transistor

Type Product name Marking code

PIN OUT

A1225

(1) (2)

(3)

Ref.

NPN

PNP

E

B

C

E

B

C

B: Base
C: Collector
E: Emitte

r

I G O

78M05C

Voltage regulators

Type Product name Marking code

PIN OU

T

78M05

(1) (2)

(3)

Ref.

Positive voltage
regulator

Epitaxial planar
transistor

G: GND
O: Output
I: Input

(2)

(3)(1)

PART 2

MECHANICAL PART

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. Amplier parts list page from 1 to 2

Table of the last upgrading revisions

UPGRADING REVISIONS

PART 1

ELECTRONIC PART

PART 2

MECHANICAL PART

SECT. B

Mainboard

Rk = 12 Ohm

SECT. G

Comp. Pin-out

SECT. A - Exploded views

and parts list

Rev. A

SECT. C
PS2-P/N

SECT. D

AB7-2

SECT. F

PART 3

Technical Notes

Technical

Notes

PS2.1

ABLD.1

4.5-C.1

PSC.2

CPU.1

Rev. A Rev. A

ABLD

CPU

PSC

SECT. E
Controls

AB7-2.1

2

3

2

3

1

1

9

29

29

31

30

6

28

28

13

38

27

4

12

25

8

34

36

19

11

23

35

37

15

15

17

16

28

28 18

24

14

22

25

5

21

32

33

7

28

29

10

1. Mechanical Exploded View

26

20

1

2

2

3

4

5

7

6

2. Package Exploded View

LRx 4.5 ASSEMBLED AMPLIFIER PARTS LIST

Rev. A

Part 2A page 1 of 2

REF. NO PART NO DESCRIPTION Q.TY

1 10020510 LRx SLIDE SWITCH KNOB 9

2 10020520 LRx POTENTIOMETER KNOB Lg 2

3 10020530 LRx POTENTIOMETER KNOB Sh 2

4 10081110 LRx Lg CONTROL PANEL 1

5 10081120 LRx PWR-FUSE PANEL PAINTED 1

6 10081130 LRx Lg-IN ENDS SUPPORT 1

7 10081160 LRx4.5 PWR ENDS SUPPORT (ATP 4-6W) WITH SILKSCREEN 1

8 10081170 LRx SATIN BLU TRANSP Lg COVER 1

9 10081190 LRx FRONT-END SHIELD 1
10 10081210 LRx CABLE-END SHIELD 1
11 10081241 LRx TRANSP AUDISON LOGO 1
12 10221170 LRx4.5 STICKER FOR CONTROL PANEL 1

13 10221220 LRx4.5 / LRx4.1k STICKER FOR Lg-IN ENDS SUPPORT 1

14 12112910 M5x18 SCREW TB EI (4) + WASHERS NICKEL PLATED 2
15 12130200 2.9x13 SCREW (AFsp TC C ZN) 4
16 12500560 LRx TO220 SPRING (10mm) 10
17 12500570 LRx TO3P SPRING (15mm) 12
18 14403060 LRx 218mm BOTTOM (LRx 4.5) 1
19 15120100 LRx ASSEMBLED DISPLAY PCB - CABLE 210mm 1
20 15230510 LRx RCA INPUT 1
21 15270520 FUSEHOLDER FOR 2W-TBF 1
22 15289846 FUSE 40A (SFA TYPE) 2
23 23824060 LRx 243mm HEAT-SINK (LRx4.5) 1
24 10081181 LRx Sh COVER - PAINTED 1
25 32101210 3x10 SCREW (HILO TBOTT. EI 2 CR) 4
26 32101220 3x10 SCREW (UNI 9707 HILO TC C ZN) 2
27 32130501 2.9x4.5 SCREW (AFsp TC C ZN) 4
28 32150031 3.2x7.0 SCREW (AFsp TFR C ZN) 10
29 32150110 3.5x13 SCREW (AF TC C ZB) 4

30 33540100 LRx Lg LEFT ZAMAK TERMINAL 1
31 33540110 LRx Lg RIGHT ZAMAK TERMINAL 1

32 33540120 LRx Sh LEFT ZAMAK TERMINAL 1
33 33540130 LRx Sh RIGHT ZAMAK TERMINAL 1
34 34125040 LRx 4.5 LABEL 1
35 34150020 242x25mm INSULATION Al. STRIP 2
36 34561020 LRx 243mm STRIP - SILVER (LRx4.5) 1
37 36726310 LRx4.5-MB C.S.ASS. (LRx4.5 MAIN BOARD) 1
38 36726630 LRx4.5-C.1 C.S.ASS. (LRx4.5 CONTROLS) 1

LRx 4.5 PACKAGE PARTS LIST

1 11116930 LRx4.5 CARTON BOX 1
2 11501540 LRx INNER CARTON 2
3 10039800 HIGH DENSITY POLIETHILENE BAG 27x56 1
4 10040400 HIGH DENSITY POLIETHILENE BAG 20x30 1
4 10120900 AUDISON WARRANTY rev. B 1
4 10125110 RAEE/WEE INFORMATION 1
4 10125240 LRx 4.5 / LRx 4.1k OWNER’S MANUAL 1
4 10125260 LRx FIXING TEMPLATE 1
4 10125270 LRx 4.5 CONFIGURATION TEMPLATE 1

4 90200020 AW STICKER S - AUDISON Transfer Sticker 19x7 1

5 10045000 10x16 AUDISON BAG 1
5 10081221 LRx PLAST SNAP-IN CABLE FIX ACCESSORY KIT 1
5 12150520 3.9x25 SCREW (AFcp TC C ZN) 4
5 12600610 90mm PH2 INSERT 1
5 15240030 LRx FASTON ACCESSORY KIT 1
5 30024510 AUDISON MULTISPANNER 1
6 15230520 LRx IN-HI INPUT (ECI-HI) 1
7 10040400 HIGH DENSITY POLIETHILENE BAG 20x30 1
7 10081200 LRx REAR-END SHIELD 1

7 10081170 LRx Lg COVER - PAINTED 1

REF. NO PART NO DESCRIPTION Q.TY

Rev. A

Part 2A page 2 of 2

LRx 4.5 EXPENDABLE MATERIALS

07000400 THERMO COND. GREASE 50g.

07000600 1-2577 SILICONE RESIN 0.1

PART NO DESCRIPTION Q.TY

Rev. A

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. Amplier parts list page from 1 to 2

Table of the last upgrading revisions

UPGRADING REVISIONS

PART 1

ELECTRONIC PART

PART 2

MECHANICAL PART

SECT. B

Mainboard

Rk = 12 Ohm

SECT. G

Comp. Pin-out

SECT. A - Exploded views

and parts list

Rev. A

SECT. C
PS2-P/N

SECT. D

AB7-2

SECT. F

PART 3

Technical Notes

Technical

Notes

PS2.1

ABLD.1

4.5-C.1

PSC.2

CPU.1

Rev. A Rev. A

ABLD

CPU

PSC

SECT. E
Controls

Rk = 12 Ohm

Rev. B

PS2.1A

ABLD.1

4.5-C.1A

PSC.2

CPU.1

Rev. A

Rev. A

AB7-2.1

AB7-2.1

2

3

2

3

1

1

9

29

29

31

30

6

28

28

13

38

27

4

12

25

8

34

36

19

11

23

35

37

15

15

17

16

28

28 18

24

14

22

25

5

21

32

33

7

28

29

10

1. Mechanical Exploded View

26

20

1

2

2

3

4

5

7

6

2. Package Exploded View

LRx 4.5 ASSEMBLED AMPLIFIER PARTS LIST

Rev. B

Part 2A page 1 of 2

REF. NO PART NO DESCRIPTION Q.TY

1 10020510 LRx SLIDE SWITCH KNOB 9

2 10020520 LRx POTENTIOMETER KNOB Lg 2

3 10020530 LRx POTENTIOMETER KNOB Sh 2

4 10081113 LRx Lg GRAY CONTROL PANEL 1

5 10081123 LRx GRAY PWR-FUSE PANEL PAINTED 1

6 10081130 LRx Lg-IN ENDS SUPPORT 1

7 10081160 LRx4.5 PWR ENDS SUPPORT (ATP 4-6W) WITH SILKSCREEN 1

8 10081173 LRx SATIN GRAY TRANSP Lg COVER 1

9 10081193 LRx GRAY FRONT-END SHIELD 1
10 10081213 LRx GRAY CABLE-END SHIELD 1
11 10081241 LRx TRANSP AUDISON LOGO 1
12 10221173 LRx4.5 GRAY STICKER FOR CONTROL PANEL 1

13 10221220 LRx4.5 / LRx4.1k STICKER FOR Lg-IN ENDS SUPPORT 1

14 12112910 M5x18 SCREW TB EI (4) + WASHERS NICKEL PLATED 2
15 12130200 2.9x13 SCREW (AFsp TC C ZN) 4
16 12500560 LRx TO220 SPRING (10mm) 10
17 12500570 LRx TO3P SPRING (15mm) 12
18 14403060 LRx 218mm BOTTOM (LRx 4.5) 1
19 15120100 LRx ASSEMBLED DISPLAY PCB - CABLE 210mm 1
20 15230510 LRx RCA INPUT 1
21 15270520 FUSEHOLDER FOR 2W-TBF 1
22 15289846 FUSE 40A (SFA TYPE) 2
23 23824063 LRx 243mm GRAY HEAT-SINK (LRx4.5) 1
24 10081181 LRx Sh COVER - PAINTED 1
25 32101210 3x10 SCREW (HILO TBOTT. EI 2 CR) 4
26 32101220 3x10 SCREW (UNI 9707 HILO TC C ZN) 2
27 32130501 2.9x4.5 SCREW (AFsp TC C ZN) 4
28 32150031 3.2x7.0 SCREW (AFsp TFR C ZN) 10
29 32150110 3.5x13 SCREW (AF TC C ZB) 4

30 33540103 LRx Lg LEFT GRAY ZAMAK TERMINAL 1
31 33540113 LRx Lg RIGHT GRAY ZAMAK TERMINAL 1

32 33540123 LRx Sh LEFT GRAY ZAMAK TERMINAL 1
33 33540133 LRx Sh RIGHT GRAY ZAMAK TERMINAL 1
34 34125043 LRx 4.5 GRAY LABEL 1
35 34150020 242x25mm INSULATION Al. STRIP 2
36 34561020 LRx 243mm STRIP - SILVER (LRx4.5) 1
37 36726310 LRx4.5-MB C.S.ASS. (LRx4.5 MAIN BOARD) 1
38 36726630 LRx4.5-C.1 C.S.ASS. (LRx4.5 CONTROLS) 1

LRx 4.5 PACKAGE PARTS LIST

1 11116930 LRx4.5 CARTON BOX 1
2 11501540 LRx INNER CARTON 2
3 10039800 HIGH DENSITY POLIETHILENE BAG 27x56 1
4 10040400 HIGH DENSITY POLIETHILENE BAG 20x30 1
4 10120900 AUDISON WARRANTY rev. B 1
4 10125110 RAEE/WEE INFORMATION 1
4 10125240 LRx 4.5 / LRx 4.1k OWNER’S MANUAL 1
4 10125260 LRx FIXING TEMPLATE 1
4 10125270 LRx 4.5 CONFIGURATION TEMPLATE 1

4 90200020 AW STICKER S - AUDISON Transfer Sticker 19x7 1

5 10045000 10x16 AUDISON BAG 1
5 10081221 LRx PLAST SNAP-IN CABLE FIX ACCESSORY KIT 1
5 12150520 3.9x25 SCREW (AFcp TC C ZN) 4
5 12600610 90mm PH2 INSERT 1
5 15240030 LRx FASTON ACCESSORY KIT 1
5 30024510 AUDISON MULTISPANNER 1
6 15230520 LRx IN-HI INPUT (ECI-HI) 1
7 10040400 HIGH DENSITY POLIETHILENE BAG 20x30 1
7 10081203 LRx GRAY REAR-END SHIELD 1

7 10081170 LRx Lg COVER - PAINTED 1

REF. NO PART NO DESCRIPTION Q.TY

Rev. B

Part 2A page 2 of 2

LRx 4.5 EXPENDABLE MATERIALS

07000400 THERMO COND. GREASE 50g.

07000600 1-2577 SILICONE RESIN 0.1

PART NO DESCRIPTION Q.TY

Rev. B

PART 3

TECHNICAL NOTES

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

ELECTRONIC PART

PART 2

MECHANICAL PART

SECT. B

Mainboard

Rk = 12 Ohm

SECT. G

Comp. Pin-out

SECT. A - Exploded views

and parts list

Rev. A

SECT. C
PS2-P/N

SECT. D

AB7-2

SECT. F

PART 3

Technical Notes

Technical

Notes

PS2.1

ABLD.1

4.5-C.1

PSC.2

CPU.1

Rev. A Rev. A

ABLD

CPU

PSC

SECT. E
Controls

AB7-2.1

1. Springs Replacing

REMOVING

1- Insert the blade of the screwdriver in the center of the spring as shown in gure n°1.

2- Using the aluminium heatsink of the amplier as leverage, slowly extract the spring as shown in gure
n°2, being careful to not use too much force.

INSERTION

1- Fit the spring into the heatsink, over the transistor as shown in gure n°3.

2- Using the supplied tool, hook the spring with one end of the tool, while using the heatsink as leverage
for the other end. Make sure the spring remains as straight as possible as shown in gure n°4.

3- With constant pressure applied to the tool, insert the clamp into position as shown in gure n°5.
Carefully remove the clamp.

g.1 g.2

g.3

g.4

g.5

Part 3 page 1 of 3

TECHNICAL NOTES

Rev. A

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 xing with rivets (rst batch of pro­ducts)

1- Remove the bottom of the product.
2- Remove all the springs and the screws which x the

mainboard to the heatsink.

3- Remove the electronic board from the heatsink.
4- Unfasten the rigid rivets.
5- Remove the fan.
6- Insert the fan rubber support as shown in the drawing. In
order to x the rubber support to the mainboard, fasten the
bottom part from the PCB bottom side.
7- Cut the excess bottom part of the rubber pin.
8- Insert the new fan running the 4 pins of the rubber sup­port through the fan xing holes.

9- Pull the top 4 rubber pins until you see the slots on the
pin sides.

10- Apply the clips to the fan angles. Insert the rubber pin
slots into the hooks of the angle clips.

B. Fan exible xing through rubber sup­port and angle clips.

1- Unhook the rubber pin slots from the angle clips

hooks.

2- Remove the fan.
3- Repeat steps from 8 to 10 as shown in Proce-

dure A.

Part 3 page 2 of 3

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.

2. Disconnect loads and input signals and open the amplifier bottom cover.

3. Take a digital multimeter and set it in continuous voltage. Then connect probes to the Emitter power transistor
leads as shown in the picture.

4. Take a very small screwdriver and adjust the trimmer till you read 5.0 ÷ 6.0 mVDC on the multimeter.

5. Repeat the same procedure for each channel.
Note: Small variations regarding the values indicated, do not cause working defects.

DIGITAL

MULTIMETER

5.5 mVDC

DIGITAL

MULTIMETER

5.5 mVDC

DIGITAL

MULTIMETER

5.5 mVDC

DIGITAL

MULTIMETER

5.5 mVDC

b c e b c e b c e b c e

b c eb c eb c eb c e

B Channel L A Channel L

B Channel R A Channel R

TECHNICAL NOTES

Rev. A

Part 3 page 3 of 3