Replacement Of Components; Exchange Of Microprocessor Module Pcb3; Replacement Of 7Dp1, 7Dp2 Or 7Dp3; Replacement Of 29Il1 And 7Il1 - Bang & Olufsen BeoSound 9000 MKIII Service Manual

Replacement of components

Exchange of microprocessor module PCB3

Exchange of software EEPROM on PCB3
Exchange of both micro-processor module PCB3 and software EEPROM on PCB3

Replacement of 7DP1, 7DP2 or 7DP3

Replacement of 29IL1 and 7IL1

Replacement of light indicator
Replacement of PCB35, PCB27, PCB28 and the mechanical parts of the fi nger protection system
When exchanging PCB3 remember to insert the EEPROM from the defective
module, because it contains valuable data (serial no., type no., PIN-code etc.).
The data is not transferred to the new module untill you have been in contact with
the theft protection or after 12 hours connected with mains. This means that you
can try out a new PCB3 without transferring the products serial no. Etc..
Note !
When the serial no. has been transferred to the micro-processor it can only be
used for this specifi c product; it must go back to Bang & Olufsen's module repair
department as an exchange module to be erased again.
If the product functions are OK the theft protection is also OK; there is no need for
testing the functionality of the theft protection.
When the product is connected to mains, wait 20-30 sec. before operating.
All addresses in ML has to be updated after disconnecting mains voltage.
When exchanging the EEPROM on PCB3, the data from the micro-processor will be
written into the EEPROM when selecting any source e.g. RADIO.
It is possible to borrow an EEPROM from another BeoSound 9000 to test if there is
suspicion of a fault in the original EEPROM. The EEPROM will always adopt the
data from the main micro-processor.
If both the micro-processor and the EEPROM need to be exchanged it is necessary
to have them pre-programmed from Bang & Olufsen with the correct serial number,
otherwise they will not work.
Please contact Bang & Olufsen.
When display 7DP1, 7DP2 or 7DP3 is replaced, all three displays must be replaced
to ensure an uniform light intensity.
When 29IL1 or 7IL1 is replaced, both light bulbs must be replaced.
When either Light indicator PCB's is replaced, it must be fi xed again with double-
sided adhesive tape.
Remember to carry out adjustment of the sensitivity of the fi nger protection
system.
Replacement of components, English 5.17