Elenco 3 1/2 Digit Cap. / Trans. Kit - Manual (Page 22)

D1 - 1N4001 Diode
D2 - 1N4001 Diode
(see Figure H)
R19 - 900
Ω
.5% 1/4W Res.
(white-blk-blk-blk-green)
(see Figure I)
R20 - 90
Ω
.5% 1/4W Res.
(white-blk-blk-gold-green)
(see Figure I)
R21 - 9
Ω
.5% 1/4W Res.
(white-blk-blk-silver-green)
(see Figure I)
R22 - 0.99
Ω
.5% 1/4W Res.
(blk-wht-wht-silver-green)
(see Figure I)
R33 - 5.6k
Ω
5% 1/4W Res.
(green-blue-red-gold)
(see Figure I)
R30 - 13k
Ω
1% 1/4W Res.
(brn-orange-blk-red-brn)
(see Figure I)
R31 - 900
Ω
1% 1/4W Res.
(white-blk-blk-blk-brown)
(see Figure I)
VR1 - 200
Ω
Pot
(201)
R32 - 390
Ω
1% 1/4W Res.
(orange-wht-blk-blk-brown)
(see Figure I)
-14-
ASSEMBLE THE FOLLOWING COMPONENTS TO THE PC BOARD
In all of the following steps the components must be installed either on the top or bottom legend sides of
the PC board as indicated. The board is turned to solder the component leads on the opposite side
(installed on Bottom, soldered on Top, installed on Top, soldered on Bottom)
.
R15 - 90k
Ω
.5% 1/4W Res.
(white-blk-blk-red-green)
(see Figure I)
R14 - 900k
Ω
.5% 1/4W Res.
(white-blk-blk-orange-green)
(see Figure I)
R10 - 2.25M
Ω
.5% 1/4W Res.
R11 - 2.25M
Ω
.5% 1/4W Res.
R12 - 2.25M
Ω
.5% 1/4W Res.
R13 - 2.25M
Ω
.5% 1/4W Res.
(red-red-green-yellow-green)
(see Figure I)
R18 - 100
Ω
.5% 1/4W Res.
(brown-blk-blk-blk-green)
(see Figure I)
R17 - 900
Ω
.5% 1/4W Res.
(white-blk-blk-blk-green)
(see Figure I)
T2 - 9013 Transistor
(see Figure C)
R16 - 9k
Ω
.5% 1/4W Res.
(white-blk-blk-brown-green)
(see Figure I)
R23 - Shunt Wire
Fuse Holder Clips
Fuse 200mA 250V
Mount holders with the tab
side as shown on the bottom
legend side, solder into place
and then insert fuse.
Top Legend Side
Bottom Legend Side
Figure I
Stand resistor on end as shown.
Solder and cut off the excess leads.
White marking
on PC board
1/4” PC Board
Tab
Tab
Figure H
Stand diode on end. Mount with band as
shown on the top legend.
Band
See Page 21 for Assembled View
-21-
Testing Procedure
Capacitance
1. Place the top label over the knob and turn the
range selector knob to a capacitance (C) scale
position.
2. Connect the 9V battery to the battery snap.
3. Connect the short test leads (red lead to V
Ω
CAP
and black to COM). Turn the meter on by pressing
the power switch.
4. Capacitance - Measure a cap with another meter
and then connect the capacitor to the meter
leads. Adjust VR3 so that the meter reads the
same as the accurate one. This calibrates
capacitance circuit of meter. Using two or three
different value capacitors, check each scale. If the
test is not working check components R24-R29,
R40 -R48, VR3, C12 - C15, D6 - D9, and IC3.
Transistor - Set the meter in the h FE scales. Place
an NPN transistor into the socket. Make sure that
the transistor is in correctly. Depending on the type
of transistor, the meter will range from 20 to 550.
Place a PNP transistor into the PNP socket; the
range will also be 20 to 550. If the tests are not
working, check components R49 - R50, and the
transistor sockets.
5. Turn the meter off and remove the battery, top
label, and test leads.
DO NOT PROCEED TO SECTION F WITHOUT INSTRUCTOR’S APPROVAL.
r Attach the LCD to the PC board using the two 2.5
x 8mm screws. Use the top-mounting hole and
lightly tighten the screws.
Assembled View for Section B
Assembled Views for Section E