Olympus BH2 Series - Page 36

@
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
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