UPDATE 1-Arcandor chairman Janssen steps down

* Janssen to step down on Oct. 31

* Further four Arcandor supervisory board members resign (Adds detail)

FRANKFURT Oct 2 (Reuters) - Friedrich Carl Janssen, chairman of insolvent German retailer Arcandor (AROG.DE), will resign from his post as of Oct. 31, Arcandor said on Friday.

The resignation is largely symbolic, since the supervisory board has not played an active role in managing the retail group since it filed for insolvency in June after its request for state aid was turned down.

Four other supervisory board members also resigned, Arcandor said.

(Reporting by Eva Kuehnen)