Replacement of modules 4.1
Replacement of modules
BeoLab 20 in service position 1 .................................................................... 4.2
BeoLab 20 in service position 2 .................................................................... 4.5
Replace PCB02.1, Input Panel ....................................................................... 4.7
Replace PCB02.2, Connector Interface ....................................................... 4.10
Replace PCB04, Power Supply .................................................................... 4.11
Replace PCB30, Digital Sound Engine ........................................................ 4.13
Replace PCB35.1, Amplifier (Tweeter, Midrange)
........................................ 4.15
Replace PCB35.2, Amplifier (Woofer)
......................................................... 4.16
Replace PCB47, LED Indicator ..................................................................... 4.17
Replace PCB48.1, NTC (Tweeter)
................................................................ 4.18
Replace PCB48.2, NTC (Midrange)
............................................................. 4.19
Replace PCB48.3, NTC (Woofer)
................................................................. 4.20
Replace PCB68, Switch Panel ..................................................................... 4.21
Replace PCB89, Wireless Power Link Rx
...................................................... 4.22
Replace Tweeter
......................................................................................... 4.23
Replace Midrange
...................................................................................... 4.24
Replace Woofer
.......................................................................................... 4.25
Warning – Disconnect mains and wait 45 seconds before dismantling
The BeoLab 20 Power Supply and the local power supplies on the different
modules must be discharged before dismantling. This is done by disconnecting
from the mains, and then waiting 45 seconds before replacing any modules.
Warning – Static electricity
Static electricity may damage the product.
A static-protective field service kit must always be used when the product is
disassembled or modules are being handled.
Notice!
All modules must be placed on the ESD-mat or in an ESD-proof bag.
After replacement of modules
- When BeoLab 20 has been disassembled, all affected sealings must be visually
checked and replaced, if damaged.
- Calibration of speaker driver is necessary when a speaker unit is replaced. Refer to
adjustment page 3.4.
- Back up product data from the old PCB30, Digital Sound Engine and restore it to
the new module after replacement. Refer to adjustment page 3.2.
- After replacement of PCB30, Digital Sound Engine the new module must be
updated to the latest software version. Refer to page 3.5.
- After replacement of PCB89, Wireless Power Link Rx the speaker must be set up in
the wireless system correctly. Refer to adjustments page 3.3.
- Always perform a ‘Final check after repair’ after the product has been dismantled.
Refer to final check after repair page 3.6.
ESD
ESD-Mat
Содержание BeoLab 20
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