Olympus BH2 Series - Page 26

B. TROUBLESHOOTING (B2-BDS-2)
No. B-9
Replace the UYPC65.
Is power supplied normally?
Are the UYPC64 and the primary
voltage selector switch SW103
conducting?
YES
NO
0
+
Replace the spark gap RC102
and RC103.
Is power supplied
normally?
YES
'
(EtD)
0 NO
@ Measure the voltage between SW101 QJ
and JlOl !m with a mul timeter. Normal
if the voltage equal to the AC line
voltage is applied. Abnormal if not.
The terminals are covered with a tube.
Tear the tube or puncture it with a
needle for the measurem ent.
®
Measure the voltage between SWlOl CD
and JlOl !m with a mul timeter. Normal
if the voltage equal to the AC line
voltage is applied. Abnormal if not.
The terminals are covered with a tube.
Tear the tube or puncture it with a
needle for the measurement.
Q) Monitor the waveform between J201 CD
and J201 rn with an oscilloscope.
Normal if the waveform is almost as
shown below. Abnormal if not.
* When the light intensity control
lever is moved from "Min" to "Max"
Is the output
of UYPC64
G) position, the high level cycle of
normally?
YES
NO
Replace
the UYPC64.
Is power
supplied normally?
YES
t
(E!o)
(>NO
Replace
the transformer
TlOl.
a signal is prolonged.
G) Monitor the waveform between J301 ITJ
and J301 CD with an oscilloscope.
Normal if the waveform with the AC
phase controlled as shown below is
obtained. Abnormal if not.
* When the light intensity control
lever is adjusted, the phase angle
is varied.