FCU
SM 17 D649
Fax Option
Type C305
(D649)
2. REPLACEMENT AND ADJUSTMENT
2.1 FCU
2.1.1 SRAM DATA TRANSFER PROCEDURE
When you replace the FCU board, transfer the SRAM data from the old FCU board to the new
FCU board. Do the following procedure to back up the SRAM data.
The following data can be transfered: TTI, RTI, CSI, Fax bit switch settings, RAM address
settings, NCU parameter settings.
1. Replace the FCU board (
p.1)
2. Keep the rear cover opened after the new FCU board installation for the SRAM transfer work.
3. Connect the flat flexible cable to the connector [A] of the new FCU board (
x 1). This
flexible cable is shipped with the new FCU board.
The blue side of the flat flexible cable must face outward.
4. Move the Dip Switch [B] of the old FCU board from “OFF” to “ON”.
5. Connect the flat flexible cable to the connector [A] of the old FCU board.
6. Turn on the main power switch.
7. SRAM data transmission starts. When the transmission is completed, you will hear a beeper
sound.
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