Mastech M840D - TRANSISTOR Hfe TEST; Battery and Fuse Replacement; Warranty

figure
"1"
for
ovedmd
wlren
the diode
is reversed.
5.8 TRANSISTOR
hFE
TEST
1)
$et the function range
switcfr
to Sre
"hFEu
position.
2)
Make
$ure the transistor
i$
"NPN"
or
"PNP"
type.
3) Transistor
c*necily insert in
E.B.S
@nnector.
4)
Display reading
is
approx.
fansistor
hFH
value.
Note;
Test
mndition:
B-ase
cunent
approx,
10uA,
Vss
approx.z.8v
I
I
a/
a
I
.t
6.F
1)
Battery
and fuse replaoernent
sfrould
only
h done
after the test
i
leads
have been
disconnecffi
and
power
is
off.
j
i
2l
Loosen
$crfi^É
with
suihble
scre\ildriverand
remove
case
büom.
I
3)
The
r¡eter
is
power
by
a single
9v batt*ry
{lEC
6F?J,
NEDA
1604,
i
Jl$
0ü6F),
$nap the
battery
mnnecürr
leads
to
fre
terminals
of a new
i
battery
and
reinsert
the battery
into
the
case top.
Dress fie
battery
!
leads
so
that
fiey
will not
be
pinched
betr¡rreen
ffre case
hottorn
and
i
case
top.
4)
The meter
is
protected
fast tuse
0.5Atr50V
(mdel
M840D
proteded
fuse
2A#5$V
onlyi, dirnensions
is
05?0mm.
5)
Replace
the mse
bottom and
reinshll
üre
three
$crevte.
operate
fie
rneter
unless
the case
bottom is
fully
ds$ed.
AWARRAI{TYA
Warrants
this instrument'to
be free
frorn
defects
in
rnaterial
and workmanship
for
a
period
of one
year.
Any instrument
found
defective within
one
year
from
the delivery
date-
and
returned
to
the
factory
with
transportation
charges
prepaid.
W¡ll
be repaired,
adjusted,
or replaced
at no
charge
to the
original
purchaser.
This
warranty
does not
cover
expendable
items
such
as
batteries
or
fuses,
lf
tl're
defect
has
been
caused
by
a
rnisuse
ar
abnormal
operation
conditions,
the
repair
will
be
billed
at
a
nominal
cost.