Arcam A85 service manual Res Sm

Page 45

ARCAM

 

 

 

 

 

 

 

PCB Bill of Materials

Document title: P85 THIRD CHANNEL

 

 

 

 

 

 

 

Document number: L911RS

 

Issue: 1

Revision: 1

ECO number: 01_1101

Date: 06/06/01

 

 

Created by:

JR

Page 1 of 2

 

 

Part

Qty Iss

Description

 

 

Designators

 

 

1A000

2

RES SM

W4

1%

0R0

1206

 

R345

R346

 

 

 

1A022

4

RES SM

W4

1%

22R

1206

 

R321

R322

R323

R337

1A110

13

RES SM

W4

1%

100R 1206

 

R105

R106

R315

R316

 

 

 

 

 

 

 

 

R317

R318

R319

R320

 

 

 

 

 

 

 

 

R343

R344

R347

R348

 

 

 

 

 

 

 

 

R349

 

 

 

 

1A115

2

RES SM

W4

1%

150R 1206

 

R338

R339

 

 

 

1A122

2

RES SM

W4

1%

220R 1206

 

R103

R104

 

 

 

1A133

2

RES SM

W4

1%

330R 1206

 

R341

R342

 

 

 

1A210

7

RES SM

W4

1%

1K0

1206

 

R100

R101

R102

R324

 

 

 

 

 

 

 

 

R325

R326

R354

 

1A215

1

RES SM

W4

1%

1K5

1206

 

R331

 

 

 

 

1A218

1

RES SM

W4

1%

1K8

1206

 

R332

 

 

 

 

1A233

2

RES SM

W4

1%

3K3

1206

 

R333

R335

 

 

 

1A247

3

RES SM

W4

1%

4K7

1206

 

R310

R328

R329

 

1A268

1

RES SM

W4

1%

6K8

1206

 

R355

 

 

 

 

1A310

13

RES SM

W4

1%

10K

1206

 

R300

R301

R302

R303

 

 

 

 

 

 

 

 

R304

R305

R306

R307

 

 

 

 

 

 

 

 

R309

R311

R312

R313

 

 

 

 

 

 

 

 

R314

 

 

 

 

1A322

4

RES SM

W4

1%

22K

1206

 

R308

R327

R334

R336

1A410

1

RES SM

W4

1%

100K 1206

 

R340

 

 

 

 

1A510

1

RES SM

W4

1%

1M0

1206

 

R330

 

 

 

 

1A822

1

RES SM

W4

1%

2R2

1206

 

R107

 

 

 

 

1C856

2

RES CF

2W

5R6 5%

 

 

R350

R351

 

 

 

1J147

2

RES 2W

MF

5%

470R

 

 

R352

R353

 

 

 

1T002

1

THERMISTOR SIEMENS B59008

TH100

 

 

 

 

2C110

2

MLC 100P 50V

NPO

5% SM

 

C307

C308

 

 

 

2C210

1

MLC 1N0 50V X7R 10% SM

 

C105

 

 

 

 

2C310

3

MLC 10N 50V X7R 10% SM

 

C103

C104

C312

 

2C410

7

MLC 100N 50V

X7R

10% SM

C100

C101

C309

C310

 

 

 

 

 

 

 

 

C313

C314

C315

 

2D147W

1

PPRO W

470P 63V 5% RA

 

C316

 

 

 

 

2H410

3

PCRB 100N

100V 10% RA 5mm

C108

C109

C311

 

2K410

1

PEST 100N

63V 10%

 

 

C319

 

 

 

 

2K447

1

PEST 470N

63V 10%

 

 

C317

 

 

 

 

2N610

2

ELST 10U 50V

 

 

 

C305

C318

 

 

 

2N710

5

ELST 100U

25V

 

 

 

C102

C300

C301

C303

 

 

 

 

 

 

 

 

C304

 

 

 

 

2N710B

2

ELST 100U

100V

 

 

C302

C306

 

 

 

2N910A

2

ELST 10m 63V

RA 35mm

 

C106

C107

 

 

 

2V710

1

ELST NON POLAR 100UF 16V

C320

 

 

 

 

3AS16W

3

DIODE SS SM BAS16W

 

D300

D301

D302

 

3B4003

4

RECTIFIER

1N4003F 1A 200V

D100

D101

D303

D304

3BGBU8D

1

BRIDGE

RECTIFIER

8A 200V

BR100

 

 

 

 

3CW315V

2

ZENER 15V

OW35 SM SOT23

DZ300 DZ301

 

 

3CW34V7

4

ZENER 4V7

OW

35 SM SOT23

DZ302 DZ303 DZ305

 

 

 

 

 

 

 

 

DZ306

 

 

 

 

4AFMMT497

11

TRANS LF SS N SM FMMT497

TR309 TR310 TR311

 

 

 

 

 

 

 

 

TR312

TR313

TR314

 

 

 

 

 

 

 

 

TR315

TR316

TR317

 

 

 

 

 

 

 

 

TR320

TR322

 

 

4AFMMT597

10

TRANS LF SS P SM FMMT597

TR300 TR301 TR302

 

 

 

 

 

 

 

 

TR303

TR304

TR305

 

 

 

 

 

 

 

 

TR306

TR307

TR308

 

 

 

 

 

 

 

 

TR321

 

 

 

 

Image 45
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
Related manuals
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.