Olympus BH2 Series - Page 7

A. TROUBLESHOOTING (B2-BDT)
No. A-3
®
Replace the lamp.
Is the lamp lit ?
YES
NO
+-----!B
Are the lamp socket
terminals conduc ting
wi th the lamp set on
the lamp socket?
YES
NO
Rep lace the lamp socket.
Is the lamp lit?
YES f
~f-C-- N_o __ _
the transistor QlOl
norma l?
YES
NO
Replace the QlOl
Is the lamp lit?
Replace the UYPC48.
@,, __
0 2 4 6 7
ODD DD
LED displa y
Normal if the resistan ce value
between @] (orange) and ~
(blue) varies smoothl y from 0
to 500~ when the light intensit y
control lever is slid with the
Jl02 removed. Abnormal if not.
~ Normal if 0.6V or greater voltage
is generated between the base
(yellow) and the emitter (brown)
o f QlOl when measured with a
multimeter with the light intensit y
control lever set to th e Max.
position. Abnormal if the voltage
is lower than 0.6V .