Replacing Rom - Canon FAX L1000 Service Manual

FAX-L1000 Chapter 1: Safety and Precautions

2.3.7 Replacing ROM

Observe the following precautions when replacing the ROM on the SCNT board, for example,
when replacing a defective ROM or when upgrading the software.
a) Preparation
Print out all battery backed up data.
Reception image data in image memory is erased approx. 12 hours after
power is turned off.
For details on battery backed up data, see this Chapter, 3. PRECAUTIONS
FOR DATA PROTECTION .
REFERENCE
b) Replacement
(1) Make sure that the power cord and the telephone line are disconnected.
(2) Put on the grounding wrist straps to counter electrostatic discharge.
(3) Remove the right cover, and shield cover referring to the PARTS CATALOG
(supplied separately) .
(4) Remove the ROM mounted on the SCNT board using the IC removing tool.
(5) Insert the new ROM, making sure that the notches on the ROM and IC socket are
aligned.
c) After replacement
(1) When a defective ROM is being replaced with a new ROM, turn the power on after
mounting on the SCNT board. This completes replacement.
(2) When the ROM is replaced for upgrading the software and upgrading involves
changing software switch settings such as service data, you must perform the following
operation.
• Perform All Clear operation. After you perform All Clear operation, register the
backed up data referring the list you printed out earlier.
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