Arcam A85 service manual 220NF Class X2 CAP 275VRMS

Page 34

ARCAM

 

 

 

 

PCB Bill of Materials

Document title: A85 POWER AMPLIFIER AND PSU

 

 

 

 

 

Document number: L882RS

Issue: 3

Revision: 2

ECO number: 01_1101A

Date: 06/06/01

 

Created by:

JR

Page 2 of 3

 

 

2A410

3

CERD 100N 63V 20% RA

 

C224

C225

C226

 

2C110

4

MLC 100P 50V NPO 5% SM

 

C307

C308

C407

C408

2C210

3

MLC 1N0 50V X7R 10% SM

 

C100

C231

C235

 

2C310

11

MLC 10N 50V X7R 10% SM

 

C213

C214

C215

C216

 

 

 

 

 

C217

C218

C219

C221

 

 

 

 

 

C230

C312

C412

 

2C410

16

MLC 100N 50V X7R 10% SM

C201

C202

C203

C204

 

 

 

 

 

C220

C232

C309

C310

 

 

 

 

 

C313

C314

C315

C409

 

 

 

 

 

C410

C413

C414

C415

2D147W

2

PPRO W 470P 63V 5% RA

 

C316

C416

 

 

 

2D168

1

PPRO 680P 5% 63V RA

 

C200

 

 

 

 

2D422

1

220NF CLASS X2 CAP 275VRMS

C234

 

 

 

 

2H410

4

PCRB 100N 100V 10% RA 5mm

C211

C212

C311

C411

2K233

4

SUPPR CAP 3N3 250V

 

C205

C206

C207

C208

2K410

2

PEST 100N 63V 10%

 

C319

C419

 

 

 

2K447

2

PEST 470N 63V 10%

 

C317

C417

 

 

 

2N610

7

ELST 10U 50V

 

C222

C223

C233

C305

 

 

 

 

 

C318

C405

C418

 

2N622

1

ELST 22U 63V

 

C229

 

 

 

 

2N710

8

ELST 100U 25V

 

C300

C301

C303

C304

 

 

 

 

 

C400

C401

C403

C404

2N710B

4

ELST 100U 100V

 

C302

C306

C402

C406

2N810A

1

ELST 1M0 10V

 

C228

 

 

 

 

2N833

1

ELST 3M3 25V

 

C227

 

 

 

 

2N910A

2

ELST 10m 63V RA 35mm

 

C209

C210

 

 

 

2V710

2

ELST NON POLAR 100UF 16V

C320

C420

 

 

 

3AS16W

8

DIODE SS SM BAS16W

 

D205

D206

D300

D301

 

 

 

 

 

D302

D400

D401

D402

3B4003

10

RECTIFIER 1N4003F 1A 200V

D100

D101

D200

D201

 

 

 

 

 

D202

D203

D303

D304

 

 

 

 

 

D403

D404

 

 

 

3BGBU8D

1

BRIDGE RECTIFIER 8A 200V

BR200

 

 

 

 

3CW315V

5

ZENER 15V OW35 SM SOT23

DZ207 DZ300 DZ301

 

 

 

 

 

DZ400

DZ401

 

 

3CW34V7

9

ZENER 4V7 OW 35 SM SOT23

DZ204 DZ302 DZ303

 

 

 

 

 

DZ305

DZ306

DZ402

 

 

 

 

 

DZ403

DZ405

DZ406

4A849B

1

TRANS LF SS N SM BC849B

TR204

 

 

 

 

4A856B

2

TRANS LF SS P SM BC856B

TR205 TR206

 

 

4AFMMT497

24

TRANS LF SS N SM FMMT497

TR201 TR203 TR309

 

 

 

 

 

TR310

TR311

TR312

 

 

 

 

 

TR313

TR314

TR315

 

 

 

 

 

TR316

TR317

TR320

 

 

 

 

 

TR322

TR409

TR410

 

 

 

 

 

TR411

TR412

TR413

 

 

 

 

 

TR414

TR415

TR416

 

 

 

 

 

TR417

TR420

TR422

4AFMMT597

21

TRANS LF SS P SM FMMT597

TR202 TR300 TR301

 

 

 

 

 

TR302

TR303

TR304

 

 

 

 

 

TR305

TR306

TR307

 

 

 

 

 

TR308

TR321

TR400

 

 

 

 

 

TR401

TR402

TR403

 

 

 

 

 

TR404

TR405

TR406

 

 

 

 

 

TR407

TR408

TR421

4B179

3

NPN TRANS MP BD179

 

TR100 TR101 TR200

4CSAP15N

2

TRANS POWER NPN SAP15N

 

TR318 TR418

 

 

4CSAP15P

2

TRANS POWER PNP SAP15P

 

TR319 TR419

 

 

5B072D

2

IC AUDIO SM DUAL TL072

 

IC300 IC400

 

 

Image 34
Contents A85 Contents List Pre-amplifier circuit description Amplifier & PSU Circuit Description L882 Circuit Sheet PSU Ground naming convention is as follows A85, P85, P85/3 Service Guide Fault Diagnostics A85 amplifier and PSU top sheet Circuit Diagram A85 amplifier power supply and microcontroller interface A85 amplifier power output stage left A85 amplifier power output stage right DVD Display PCB USE Exclude NF When Using Runout Sheet Program Integrated amplifier preamp main signal path Integrated amplifier preamp power supply A85 Display PCB Circuit Diagram A85 Phono Stage TOP Level A85 Phono Stage Left Channel A85 Phono Stage Right Channel AP85 third channel top level 23425 P85 microcontroller and switch Page Page Page Page Page Page Page Arcam 220NF Class X2 CAP 275VRMS IC Vreg POS Wima FKP2 Ppro Obsolete, absent, redundant, or incorrect issue in PDM Part Qty Iss Description Designators Phono SKT 4-WAY EMC Gold SK2 SK3 SK4 SK5 WAF MN12818A VFD Itron DISP1 Title A85 Phono PCB Title RES SM Phono SKT 2-WAY EMC Gold Title P85 Switch Board Tact Switch 2-PIN LOW Prof SW1 SW2 A85 General Assembly Parts List Silver Black Description Where Used QTY P85 General Assembly A85P Transformer P85/3 General Assembly Clamp E912MC to E804HK ST=L
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Manual 14 pages 30.61 Kb

A85 specifications

The Arcam P85 and A85 amplifiers are a testament to Arcam's commitment to high-quality audio performance. These components are well-known in the audiophile community for their unique blend of state-of-the-art technology and superior sound quality, catering to discerning listeners who value fidelity and craftsmanship.

The Arcam A85 is a high-performance integrated amplifier that features a robust design and advanced circuitry. It offers a powerful 85 watts per channel output, which is more than sufficient to drive a wide range of speakers with clarity and precision. The A85 incorporates a dual mono design with separate power supplies for the left and right channels, ensuring low crosstalk and high channel separation. This design choice also enhances the amplifier’s dynamic response, allowing it to handle complex musical passages with ease.

One of the standout features of the A85 is its use of high-quality components, including low-noise transistors and capacitors that are specifically chosen to minimize distortion. The amplifier exhibits an impressive signal-to-noise ratio, contributing to a clean audio signal that preserves the nuances of the music.

On the other hand, the Arcam P85 is a powerful, dedicated power amplifier that pairs perfectly with the A85. It utilizes a Class G amplification technology, which provides significant power efficiency. This means that the P85 can deliver peak power output without generating excessive heat, making it an ideal choice for long listening sessions.

The P85 offers 85 watts per channel into 8 ohms but can also deliver 140 watts into 4 ohms, allowing it to drive even the most demanding loudspeakers with authority. Its balanced XLR inputs, alongside standard RCA inputs, ensure compatibility with various audio sources, while the sturdy construction ensures durability and performance.

Both the A85 and P85 feature a simple yet elegant design, characterized by a sleek chassis that minimizes resonances and maximizes aesthetic appeal. They also come equipped with a variety of connection options, including multiple line-level inputs and outputs, making integration into an existing audio system straightforward.

In summary, the Arcam P85 and A85 amplifiers represent a harmonious fusion of innovative technology, impeccable sound quality, and user-friendly design. Their powerful performance, combined with high efficiency and low distortion, makes them a prized possession for any audiophile seeking to enhance their listening experience. Whether used in a stereo setup or as part of a more extensive home theater system, the A85 and P85 deliver exceptional audio performance that stands the test of time.