Canon PowerShot 350 Service Manual - Page 71

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Part 3: Repair Information 3.5 D/A VRIER PURPOSE: Adjusting the level of NTSC white signal. CAUTION: Use 75O termination. STANDARD: White level : 714±10mV. Toms: • Data Transfer Unit • Oscilloscope • Monitor 714 mV PREPARATION: Set the camera in Color Bar Test mode. Press F1 (Press F1 again to cancel the mode.) Fig. 3-20 D/A Vref. ADJUSTMENT: 1) Input following data to a camera. 2) Adjust the white level to 714mV±10mV with the up and down cursor keys. CMD $60 ADR $8 DATA $2F RET 3) Record the data when the white level becomes 714mV±10mV. 4) Input the data recorded at 3) to EEPROIVI. CMD $38 ADR $18 DATA The data recorded at 3). RET 5) Press F1 and cancel Color Bars Test mode. 6) Turn the power off and on. 3-21

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Part
3:
Repair
Information
3.5
D/A
VRIER
PURPOSE:
Adjusting
the
level
of
NTSC
white
signal.
CAUTION:
Use
75O
termination.
STANDARD:
White
level
:
714±10mV.
714
mV
Toms:
•
Data
Transfer
Unit
•
Oscilloscope
•
Monitor
Fig.
3-20
D/A
Vref.
PREPARATION:
Set
the
camera
in
Color
Bar
Test
mode.
Press
F
1
(Press
F
1
again
to
cancel
the
mode.)
ADJUSTMENT:
1)
2)
Input
following
Adjust
the
data
white
level
to
a
camera.
to
714mV±10mV
with
the
up
and
down
cursor
keys.
CMD
$60
ADR
$8
DATA
$2F
RET
3)
Record
the
data
when
the
white
level
becomes
714mV±10mV.
4)
Input
the
data
recorded
at
3)
to
EEPROIVI.
CMD
$38
ADR
$18
DATA
The
data
recorded
at
3).
RET
5)
Press
F
1
and
cancel
Color
Bars
Test
mode.
6)
Turn
the
power
off
and
on.
3-21