Service Manual for
Handheld Overhead Projector
OH-20
(BX-1)
Date: February 1996
INDEX
CONTENTS
OH-20 (BX-1)
Page
1.
Each part name and work
1
2.
Specification
2
Model name:
Description:
Projection lens:
Lamp
Illuminance:
Stage size:
Projection distance:
Magnification:
Voltage:
Power consumption:
Operation temperature:
Dimension
Life time
M.T.B.F.
Mechanical shock resistance
Inversion angle
Weight:
Accessories:
Production:
3.
Option
3
4.
Disassembly / assembly
3
Cable layout
5.
Parts list
5
3DJH
1. Each part name and work
Slide lock
miller
Lens
Focus dial
Stage
Power switch
Lens
Filter
3DJH
2. Specification
Model name:
OH-20
Description:
Reflector Type Handheld OHP
Projection lens:
f = 163 mm (6.5 inches), 3-lens system
Lamp:
Halogen lamp 12V / 75W
illuminance:
1,100 lux (1.5m)
Stage size:
95 X 95 mm (3.7 X3.7 inches)
Projection distance:
1.2 ~ 2.6 m (3.9 ~8.5 feet)
Magnification:
6.4 to 15.0 times
Voltage:
120V AC or 230V AC
p 10 ¡
Power consumption: 90W
Operation temperature: + 5°C to +35°C (41°F to 95°F)
Dimension
In use:
135 X 184 X 293 mm (5.3 X7.2X11.5 inches)
Folded: 135 X 184 X 58 mm (5.3 X 7.2 X 2.3 inches)
Life time:
Lamp:
100 hour
M.T.B.F.:
Fan:
50,000 hour
Mechanical shock resistance: 3 cm (One side support drop test)
Inversion angle:
Over 15 degree
Weight:
1,100 g / 2.4 lbs
Accessories:
Soft case
Mini binder
Halogen lamp (Spare)
OHP sheet
Laser printer type:
10 sheets
Sample print:
1 sheet
Cleaning cloth
Power cord
,Q XVH
,Q XVH
)ROGHG
)ROGHG
3DJH
Production:
Note: Halogen Lamp JCR-75B and JCR-75BC is same. Only deference is the bar code
label on package.
3. Option (Sales arrangement)
Lamp and sheet
JCR-12-75 (Halogen Lamp)
OHS-L (OHP Sheet for Laser Printer)
OHS-J (OHP Sheet for Ink Jet Printer)
4. Disassembly / assembly
1)
Put off the Power cord from
the unit.
2)
Remove the 4 screws ( A and B)
in figure at right.
Caution: Lamp mirror, Lens ass
·y and
IRC Filter are easy to drop or
to move cause of no glue on it.
3)
Separate the Bottom case ass
·y
and Upper case ass
·y.
OHP Sheet
Destination
Model
Power
MTBF (H) Halogen Lamp
Laser
Inc Jet
UK
OH-20D
68,586
GmbH
OH-20G
AC230V, 20/60Hz
68,586
JCR-75B
OHS-LB
OHS-JB
Europe / 230V
OH-20B
68,586
Europe / 120V
OH-20U
68,586
USA
OH-20C
AC120V, 20/60Hz
68,586
JCR-75BC
OHS-LC
OHS-JC
Canada
OH-20L
68,586
$
$
%