Olympus BH2 Series Guide



Scannedforpersonal,non‐businessuseonly

September20,2018

OLYMPUS

RESEARCH

MICROSCOPES

BH2

SERIES

TROUBLESHOOTING

ADJUSTMENT

MANUAL

FOR

ELECTRICAL BASE

B2-BDT,

B2-BDS-2,

B2-BDS-3

OLYMPUS

INTRODUCTION

Three

types

electrical

base,

B2-BDT/B2-BDS-2/B2-BDS-3

are

available

for

the

BH2

Series.

Refer

the

manuals

for

each

model.

• B2-BDT

used

commonly

for

BHT,

BHTU

and

BHTM.

•

B2-BDS-2

and

B2-BDS-3

are

used

commonly

for

BHS,

BHSU

and

BHSP.

The

difference

between

B2-BDS-2

and

B2-BDS-3

described

"Hints

for

Using

This

Manual"

the

manual.

GENERAL

CONTENTS

•

Troubleshooting

for

B2-BDT

..........................

Section

•

Troubleshooting

for

B2-BDS-2

Section

•

Adjustment

for

B2-BDS-2

.............................

Section

•

Troubleshooting

for

B2-BDS-3

.............•..........

Section

•

Adjustment

for

B2-BDS-3

.............................

Section

TROUBLESHOOTING

(B2-BDT)

CONTENTS

Hints

for

Using

This

Manual

.........•.................

No.

A-1

Lamp

2-1

Lamp

not

lit

No.

A-2

2-2

Light

intensity

adjustment

fails.

.................

No.

A-4

2-3

Lamp

flickers.

....................................

No.

A-5

2-4

Lamp

burns

out.

...................................

No.

A-6

Display

3-1

Abnormal

display

...................................

No.

A-7

Power

Supply

4-1

Power

not

supplied

even

after

the

main

switch

turned

on.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

No.

A-8

Circuit

Diagram

.......................................

No.

A-12

TROUBLESHOOTING

(B2-BDT)

Hints

for

Using

This

Manual

This

manual

written

the

flowchart

format.

the

arrow

mark

find

out

defective

part.

The

numbers

and

symbols

[I] ,

indicate

the

numbers

connector

and

pin.

"Refer

the

waveform

means

"Connect

HOT

and

GND

when

using

multimeter

oscilloscope".

* "

[I]

means

"Connect

HOT

and

GND

l".

GND

reference

voltage,

OV,

electronic

circuit.

HOT

+ A

line

apply

supply

voltage.

The

symbols

and

mean

"Jump

and

the

same

tern"

The

symbols

and

mean

"Proceed

the

work

according

the

check

methods

and

given

the

same

item".

No.

A-1

TROUBLESHOOTING

(B2-BDT)

No.

A-2

Lamp

2-l

Lamp

not

lit.

UVPC48

Causes

Burnt

lamp

Defective

transistor

QlOl

Defective

UYPC48

Defective

lamp

socket

Defective

variable

resistor

RVlOl

Defective

power

supply

part

the

LED

lit

when

the

main

switch

turned

ON?

Does

the

LEDs

change

YES

with

the

adjustment

the

Does

the

LEDs

light

intensity

control?

change

with

the

adjust-

YES

ment

the

light

Replace

the

intensity

control?

y UYPC48.

Proceed

the

work

according

"No.

A-8

Power

Supply".

YES

9 @

the

variable

resistor

RVlOl

Remove

the

lamp

socket.

normal?

YES

~©

the

lamp

conducting?

Replace

the

RVlOl.l

(Resistance

both

ends

the

lamp

YES

~®

the

lamp

lit?

TROUBLESHOOTING

(B2-BDT)

No.

A-3

Replace

the

lamp.

the

lamp

lit

YES

+-----!B

Are

the

lamp

socket

terminals

conduc

ting

the

lamp

set

the

lamp

socket?

YES

Rep

lace

the

lamp

socket.

the

lamp

lit?

YES f

~f-C--

N_o

the

transistor

QlOl

norma

YES

Replace

the

QlOl

the

lamp

lit?

Replace

the

UYPC48.

@,,

0 2 4 6 7

ODD

LED

displa

Normal

the

resistan

value

between

(orange)

and

(blue)

varies

smoothl

from

500~

when

the

light

intensit

control

lever

slid

with

the

Jl02

removed.

Abnormal

not.

Normal

0.6V

greater

voltage

generated

between

the

base

(yellow)

and

the

emitter

(brown)

o f

QlOl

when

measured

with

multimeter

with

the

light

intensit

control

lever

set

to th

Max.

position.

Abnormal

the

voltage

lower

than

0.6V

TROUBLESHOOTING

(B2-BDT)

No.

A-4

2-2

Light

intensity

adjustment

fails.

SUlOl

SU102

______

c_h_a_n_~

TlOl

UVPC4B

Causes

Defective

variable

resistor

RVlOl

Defective

transistor

QlOl

Defective

UYPC48

the

variable

resistor

RV-101

normal?

YES

Replace

the

RVlOl.

the

lamp

light

intensity

adjustable?

YES

(END

the

transistor

QlOl

normal?

YES

Replace

the

QlOl.

the

lamp

light

intensity

adjustable?

YES)

Replace

the

UYPC48.

Normal

the

resistance

value

between

(orange)

and

(blue)

varies

smoothly

500~

when

the

light

intensity

control

lever

slid

with

the

Jl02

removed.

Abnormal

not.

Normal

0.6V

greater

voltage

generated

between

the

base

(yellow)

and

the

emitter

(brown)

QlOl

when

measured

with

multimeter

with

the

light

intensity

control

lever

set

the

Max.

position.

Abnormal

the

voltage

lower

than

0.6V.

TROUBLESHOOTING

(B2-BDT)

No.

A-5

2-3

Lamp

flickers.

Causes

Contact

failure

the

lamp

stained

contact

the

lamp

Defective

variable

resistor

Defective

transistor

Defective

UYPC48

Check

the

lamp

socket

(mainly

the

contact

with

the

lamp).

QlOl

the

contact

stained,

clean

and

check

the

lamp

normally

lit.

~YES

the

variable

resistor

RVlOl

normal?

YES

Replace

the

RVlOl

the

lamp

normally

lit?

YES

' )

(§)

the

transistor

QlOl

normal?

YES

....

UVPC48

caused

the

socket

RVlOl

Remove

the

lamp

and

screw

from

the

lamp

socket,

and

check

the

contact

with

the

lamp

for

any

stain.

(Take

care

not

fly

the

spring.)

Don't

touch

the

lamp

bare

hand.

Avoid

opening

the

contact

excessively.

The

contact

will

broken

Normal

the

resistance

value

between

(orange)

and

(blue)

varies

smoothly

500~

when

light

intensity

control

lever

slid

with

the

Jl02

removed.

Abnormal

not.

Normal

0.6V

greater

voltage

generated

between

the

base(yellow)

and

the

emitter

(brown)

QlOl

when

measured

with

multimeter

with

the

light

intensity

control

lever

set

the

Max.

position.

Abnormal

the

voltage

lower

than

0.6V.

TROUBLESHOOTING (B2-BDT)

Replace

the

QlOl.

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

Defective

transistor

QlOl

Defective

UYPC48

the

transistor

QlOl

normal?

YES

0---------,

Replace

the

QlOl.

the

lamp

lit?

YES

-t

~NO

Replace

the

UYPC48. J

Normal

0.6V

greater

voltage

generated

between

the

base

(yellow)

and

the

emitter

(brown)

QlOl

when

measured

with

multimeter

with

the

light

intensity

control

lever

set

the

Max.

position.

Abnormal

the

voltage

lower

than

0.6V.

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