5.8.2. NCU, MFDU, and MFCE
If the machine has a Function Upgrade Card or a Fax On Demand Card
installed, the SRAM data in the defective MFCE has to be copied to the new
MFCE. Otherwise, all the data stored in the card will be initialized the first
time that the power is switched on after replacement.
In such a case, do the following procedure.
1. Make sure that System Switch 16 - bit 0 is 1, and the battery switch of the
card is ON, before removing the IC card from the MFCE. Then, turn off
the machine.
2. Disconnect the optional IC cards.
3. Replace the old MFCE with the new MFCE (make sure that the battery
switch in the new MFCE is on).
Do not turn on the machine at this point.
4. Connect the Flash/SRAM Copy Tool into the lower slot of the new MFCE,
then connect the old MFCE to the Copy Tool (refer to section 4.1.22).
5. Turn on the machine.
6. Transfer the SRAM data from the old MFCE using service function 12 (re-
fer to section 4.1.22).
7. After finishing the data transfer, turn off the machine and disconnect the
tool.
8. Put back the optional IC card(s).
9. Turn on the machine and check if the IC cards can be used as before.
[B]
[A]
[C]
H515R639.wmf
A: NCU (3 screws) B: MFDU (2 screws) C: MFCE (2 screws)
REPLACEMENT AND ADJUSTMENT
December 21st, 1995
PCBs
5-30
