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Arcam DiVA A85 Service Manual

Arcam DiVA A85
54 pages
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A85
DiVA A85, P85 & P85/3
Ampli ers
Service Manual
ARCAM
ARCAM
Issue 2.0
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Arcam DiVA A85 Specifications

General IconGeneral
Damping Factor> 100
Power Output85W per channel into 8 Ohms (both channels driven)
Signal to Noise Ratio> 100 dB
Dimensions430mm (W)
Input impedance47 kOhm

Summary

Pre-amplifier Circuit Description

Input Switching

Describes input selection and protection.

Tone Control Circuit

Explains bass and treble control implementation.

Left Channel Description

Details the signal path for the left audio channel.

Volume Control

Power Supply

Amplifier & PSU Circuit Description

L882 Circuit Sheet 1

Covers input connections, mode selection, and speaker relays.

L882 Circuit Sheet 2

Details power supplies, trigger circuits, and interface.

L882 Circuit Sheet 3

L870 Phono Circuit Description

PSU

Describes the power supply for the phono stage.

Interface

Covers the connection to the host unit.

Amplifier

Details the RIAA amplifier circuit implementation.

SK103 Connector Pinout and Ground Naming

Fault Diagnostics

No Power

Troubleshooting steps for no power issues.

Unit Functions OK but No Audio

Diagnosing issues with no audio output.

Volume Control Locks Up

Troubleshooting volume control malfunction.

DC Offset

Diagnosing and resolving DC offset faults.

Unit Fails to Respond to Commands

Troubleshooting communication and response issues.

Unit Gets Very Hot

Diagnosing and resolving overheating problems.

Hints & Tips

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