3B1
1-6-1
1-6-1 Updating the firmware
(1) Updating the firmware on the fax control PCB
Perform the steps below when updating the firmware in the Flash ROM on the fax control PCB.
Firmware updating requires the following tools:
Flash tool assembly (P/N 35968010)
Control ROM IC1 (P/N 2AW29310)
Control ROM IC2 (P/N 2AW29320)
Caution:
• Turn the main switch off and disconnect the power plug from the wall outlet before disconnecting or inserting
connectors.
<Procedure>
1. Turn the main switch off and disconnect the power
plug from the wall outlet.
2. Remove the two screws holding the rear cover and
then the cover.
3. Remove the five screws holding the fax shield cover
and then the cover.
4. Fit control ROM IC1 and control ROM IC2 to the
flash tool assembly.
5. Insert connector CN1 (the one furthest from the
LEDs) on the flash tool assembly into connector CN5
on the fax control PCB.
6. Connect the power plug into the wall outlet.
Upgrading of control ROM IC1 and 2 starts and LED
on the flash tool assembly flashes for 30 seconds.
The LED remains on when upgrading is complete.
7. Disconnect the power plug from the wall outlet.
8. Remove the flash tool assembly from the fax control
PCB.
9. Refit the fax shield cover and rear cover.
Figure 1-6-1
Control ROM IC1
CN1
Control ROM IC2
CN2
Flash tool assembly
Figure 1-6-2
CN5
Fax control PCB
CN1
Flash tool assembly
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