Replacing Rom - Canon MultiPASS C530 Service Manual

MultiPASS C530/C560 Chapter 1: General Description

5.4.4 Replacing ROM

Observe the following precautions when replacing the ROM on the SPCNT board, for example, when
replacing a defective ROM or when upgrading the software.
a) Precaution
Print out all battery backed up data.
REFERENCE
b) Replacement
(1) Make sure that the power cord is disconnected.
(2) Put on the grounding wrist straps to counter electrostatic discharge.
(3) Remove the upper cover, referring to the Parts Catalog (supplied separately) .
(4) Remove the ROM mounted on the SPCNT board using the ROM extractor etc..
(5) Insert the new ROM, making sure that the notches on the ROM package and IC socket are aligned.
Reception image data in image memory are erased when power is turned off.
For details on battery backed up data, see Chapter 1: 5.5.1 Data battery backup
function on Page 1-62 .
When Replacing the ROM
The machine's SPCNT Board comes in two types: main ROM and printer ROM. If you
mounted a main ROM designed for 3.3 V to the socket of a printer ROM designed for 5 V
by mistake, you could damage the ROM, requiring extra care during replacement work.
Further, be sure to refer to the following diagram whenever you need to mount a printer
ROM (42-pin IC socket, 40-pin ROM).
Figure 1-28 Attaching the Printer ROM
Mark
1pin & 42pin
not used
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