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@
D.
TROUBLESHOOTING (B2-BDS-3)
No. D-5
1
Is
the
input
voltage
of the
secondary
PCB Ul02 normal?
YES
·I
Replace
the Ul02
NO
Is the input voltage
of the
display PCB Ul03
normal?
NO
Proceed the
to "No. J-7
i
YES
~I
Replace
the
display PCB Ul03.]
work
according
c
~
Measure the input
voltage of the
secondary PCB Ul02
with a multimeter.
Normal
if the input
voltage is as
4.
Power Supply".
*
specified in the following
table when
the light intensity
control lever is
moved from
"Min"
to
"Max".
Abnormal
if not.
Input voltage
Ul02lH-ll gray - Ul02Jw-llwhite
Approx. ACS - 2 OV
CN3
ill
black
- CN3
[I]
white
Approx. AC4V
CN2
11]
purple
- CN2
[I]
Approx.DC14 - l7V
CN2
[l]
blue
- CN2
[I]
Approx.DC14 - l7V
*
Approximately
AC0.8V is detected
when the light
intensity control
lever is
set
to the
"Min" position
and the main
switch
is
turned on.
This is not
defective
.
When the
light intensity
control lever
is
moved toward
the
"Max"
direction
after the main switch
is turned on
and the voltage
once reaches ACSV,
the voltage
is
not lowered
even if
the lever is moved
back to the "min"
position. "Approx.
ACS -20V" in the
table indicates
this state.
@
Measure the input
voltage of the dis-
play PCB Ul03
with
a
multimeter.
Normal if the input
voltage is as
specified in the following
table when
the light intensity
control lever is
moved from "Min" to
"Max".
Abnormal
if not.
Input
voltage
CNl []]blue
-
CNl
[I]
purple
Approx.
DC 17
l4V
-
CNl []]gray
-
CNl
[Ij
purple
___ ......
r-::;-"1
~
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