Olympus BH2 Series - Page 10

A. TROUBLESHOOTING (B2-BDT)
Replace the QlOl.
Is the lamp normally lit?
YES •
~~N-0-----1B
Replace the UYPC48.
2-4 Lamp burns out.
S\J 101 S\J 102
F101 ~
channe~
T101
Causes
No. A-6
UVPC4B
l. Defective transistor QlOl
2. Defective UYPC48
@ Is the transistor QlOl
normal?
NO
l YES
0---------,
t
I Replace the QlOl.
I Is the lamp lit? I
YES -t
~NO
I Replace the UYPC48. J
G0 Normal if 0.6V or greater voltage is
generated between the base (yellow)
and the emitter (brown) of QlOl
when measured with a multimeter with
the light intensity control lever
set to the Max. position. Abnormal
if the voltage is lower than 0.6V.