Canon PowerShot 350 Service Manual - Page 63

Basic

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Part 3: Repair Information 11. Error Indicator: Following Error information Sync. signal does not come from a camera . (Check the connection.) • Failure communication with a camera. (Check the connection) • Failure communication with a camera. (Check the connection) Writing error. (It occurs often on current tools because of software bug.s Rewrite the data.) • Data transmission error. (Check if the power is turned on.) • Failure communication with a camera. (Check the connection) • Fig. 3-13 Error Indicator 3.2 BASIC USE To write or read the data in a camera, "Command", "Address" and "Data" (this is unnecessary when reading) should be transmitted at the same time. To carry out this, input the data in the first, and press RETURN key. COMMAND ADDRESS Data RET The data is read or wrote for RAM, EEPROM and CPU and commands for them are different. Data is read and wrote by ibyte or by 2byte. Care must be taken for reading and writing 1 byte date with 2byte. The positions of data are different. 00 a8 \EEPROM BYTE yte Address Low 0 Ox000 Hight 1 Ox010 EvrSubl EvrChl 0xA8 Ox00 Display of the tool EEPROM Map Fig. 3-14 EEPROM Map Example: EEPROM $10 is read with 2byte. 3-13

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Part
3:
Repair
Information
11.
Error
Indicator:
Following
Error
information
•
•
•
•
•
Sync.
signal
does
not
come
from
a
camera
.
(Check
the
connection.)
Failure
communication
with
a
camera.
(Check
the
connection)
Failure
communication
with
a
camera.
(Check
the
connection)
Writing
error.
(It
occurs
often
on
current
tools
because
of
software
bug.s
Rewrite
the
data.)
Data
transmission
error.
(Check
if
the
power
is
turned
on.)
Failure
communication
with
a
camera.
(Check
the
connection)
Fig.
3-13
Error
Indicator
3.2
BASIC
USE
To
write
or
read
the
data
in
a
camera,
"Command",
"Address"
and
"Data"
(this
is
unnec-
essary
when
reading)
should
be
transmitted
at
the
same
time.
To
carry
out
this,
input
the
data
in
the
first,
and
press
RETURN
key.
COMMAND
ADDRESS
Data
RET
The
data
is
read
or
wrote
for
RAM,
EEPROM
and
CPU
and
commands
for
them
are
dif-
ferent.
Data
is
read
and
wrote
by
ibyte
or
by
2byte.
Care
must
be
taken
for
reading
and
writing
1
byte
date
with
2byte.
The
positions
of
data
are
different.
00
a8
BYTE
Low
Hight
\
EEPROM
yte
Address
0
1
Ox000
Ox010
EvrSubl
EvrChl
0xA8
Ox00
Display
of
the
tool
EEPROM
Map
Fig.
3-14
EEPROM
Map
Example:
EEPROM
$10
is
read
with
2byte.
3-13