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BeoLab 20
Bang & Olufsen BeoLab 20 User Manual
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BeoLab 20
T
ype 6791 – 6797, 6799
Service Manual - version 1.0
English
German, French, Italian, Spanish, Dutch, Japanese, Korean and
Simplified Chinese versions are available in the Retail System
This Ser
vice Manual must be retu
rned
with the defective parts/back-up sui
tca
se !
82.0
30.4
39.3
2
Table of Contents
Table of Contents
2
Survey of Modules
3
How to Service
4
Repair Tips/Fault Flow Chart
7
Fault Flow Chart
7
Repair Tips
7
Autocalibrate
8
Backup
8
Check Cables
8
Check for Newest SW
8
Description of LED Indications
8
Error Log
8
LED Indicator
8
Restore
8
NTC Module Test
9
Product Information - Usage Data
9
Sound Test
10
Speaker Unit Test
10
No Function and no LED Indication
11
LED Indicator Is Flashing Quickly Orange
13
No Sound from Speaker in a Wired Setup
14
No Sound from Speaker in a Wireless Setup
15
Missing, Atttenuated or Distorted Sound from Speaker and no Error Indication in Error Logs
16
Survey of Plugs and Pins
17
Adjustments - Final Check after Repair
19
Adjustments
20
Information
20
PCB30, Digital Sound Engine
20
PCB35, Amplifier
21
PCB89, Wireless Power Link Rx
21
Connecting Speaker Wirelessly
22
Speaker Units
22
Software Update
23
Check Sound
24
Clean the Product
24
Final Check after Repair
24
Insulation Test
24
Restore Setup
24
Software Update
24
Replacement of Modules
25
Beolab 20 in Service Position 1
26
Replacement of Modules
26
Replace PCB02.1, Input Panel
31
Replace PCB02.2, Connector Interface
34
Replace PCB04, Power Supply
35
Replace PCB30, Digital Sound Engine
37
Replace PCB35.1, Amplifier (Tweeter, Midrange)
39
Replace PCB35.2, Amplifier (Woofer)
40
Replace PCB47, LED Indicator
41
Replace PCB48.1, NTC (Tweeter)
42
Replace PCB48.2, NTC (Midrange)
43
Replace PCB48.3, NTC (Woofer)
44
Replace PCB68, Switch Panel
45
Replace PCB89, Wireless Power Link Rx
46
Replace Tweeter
47
Replace Midrange
48
Replace Woofer
49
Specification Guidelines for Service Use
51
Block Diagram
55
Wiring Diagram
57
Available Parts
59
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Important Safety Instructions
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Bang & Olufsen BeoLab 20 Specifications
General
Brand
Bang & Olufsen
Model
BeoLab 20
Category
Speakers
Language
English
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