Elenco Electronics M-2665K Assembly And Instruction Manual Download

Page: 18 / 18

PARTS LIST - SECTION D

Qty

Symbol

Description

Part #

PTC

Ω

Thermister

190415

ASSEMBLE THE FOLLOWING COMPONENT TO THE PC BOARD

The other components for this section have been installed already.

SECTION D

Resistance Circuit

-17-

Testing Procedure

Connect the 9V battery and test leads to the meter
(red to V

Ω

and black to COM).

Set the range

selector knob to one of the Ohm scales. Make sure
that SW1 is in the DC/Ohm position. Using two or
three different value resistors, check each scale.
Compare the kit meter readings with another meter

of known accuracy. If the tests are not working,
check for cold solder joints, part values, and the
contacts on the selector knob to make sure that they
are intact. Turn the meter off and remove the battery
and test leads.

-18-

PARTS LIST - SECTION E

RESISTORS

Qty.

Symbol

Description

Color Code

Part #

98.8

Ω

1% 1/4W

white-gray-gray-gold-brown

129830

R37

150

Ω

5% 1/4W

brown-green-brown-gold

131500

900

Ω

1% 1/4W

white-black-black-black-brown

139030

R41

1.91k

Ω

1% 1/4W

brown-white-brown-brown-brown

141930

R40

4.12k

Ω

1% 1/4W

yellow-brown-red-brown-brown

144130

Ω

1% 1/4W

white-black-black-brown-brown

149030

R38

10k

Ω

1% 1/4W

brown-black-black-red-brown

151030

R43

11k

Ω

1% 1/4W

brown-brown-black-red-brown

151130

R39, R42

39.2k

Ω

1% 1/4W

orange-white-red-red-brown

153930

R44

76.8k

Ω

1% 1/4W

violet-blue-gray-red-brown

157630

R10

90k

Ω

1% 1/4W

white-black-black-red-brown

159030

R45

158k

Ω

1% 1/4W

brown-green-gray-orange-brown

161530

R14, R15

240k

Ω

5% 1/4W

red-yellow-yellow-gold

162400

OR red-yellow-black-orange-green

R11

909k

Ω

1% 1/4W

white-black-white-orange-brown

169060

VR2

200

Ω

/ 220

Ω

Potentiometer

191320

Note:

Resistor tolerance (last band) of 5-band resistors may be green instead of brown.

CAPACITORS

Qty.

Symbol

Value

Description

Part #

C10 - C13

.01

F (103)

Mylar

241017

SEMICONDUCTORS

Qty.

Symbol

Value

Description

Part #

324 / 17324

Integrated Circuit

330324

D3 - D6

1N4001 or 1N4007

Diode

314001

D11

1N4148

Diode

314148

MISCELLANEOUS

Qty.

Symbol

Description

Part #

, CX

9-pin Socket

664009

IC Socket 14-pin

664014

SECTION E

Capacitance and Transistor Testing Circuit

PTC - Thermister 1k

Ω

Mount part in holes shown only

DO NOT PROCEED TO SECTION E WITHOUT INSTRUCTOR’S APPROVAL.

Summary of Contents for M-2665K

Page 1: ...ttp www elenco com e mail elenco elenco com DIGITAL MULTIMETER KIT MODEL M 2665K WIDE RANGE DIGITAL MULTIMETER WITH CAPACITANCE AND TRANSISTOR TESTING FEATURES Assembly and Instruction Manual Elenco E...

Page 2: ...xperience in soldering and wiring technique you should have no problems For the beginner care must be given to identifying the proper components and in good soldering habits Above all take your time a...

Page 3: ...scharge as fixed rate slope When the charge is equal to the initial starting point autozero level the read period is ended Since the discharge slope is fixed during the read period the time required i...

Page 4: ...is CAUTION sign denotes a hazard It calls attention to a procedure practice or the like which if not correctly adhered to could result in damage to or destruction of part or all of the instrument This...

Page 5: ...ck 3 Set the range selector knob to the position 4 If the semiconductor junction being measured is connected to the circuit turn off the power to the circuit being tested and discharge all of the capa...

Page 6: ...leads to the device or circuit being measured 5 Turn on the power to the device or circuit being measured The voltage value will appear on the digital display along with the voltage polarity 6 Turn o...

Page 7: ...es 2 Avoid any excessive accumulation of resin build up whenever you solder a connection 3 Take your time assembling the circuit board Work at a slow pace Remember that accuracy is far more important...

Page 8: ...remove the solder and the iron and let the connection cool The solder should have flowed smoothly and not lump around the wire lead 4 Here is what a good solder connection looks like 2 Insufficient s...

Page 9: ...0 1 2 3 4 5 8 9 Multiply By 1 10 100 1k 10k 100k 01 0 1 Multiplier Note The letter R may be used at times to signify a decimal point as in 3R3 3 3 10 F 16V 103K 100V The letter M indicates a tolerance...

Page 10: ...crew 1 2 turn Slip the two shims under the knob see Figure L If they do not slip in turn back the screw another 1 4 turn Tighten the screw just enough so that the shims can be pulled out You should no...

Page 11: ...0000 1 PC Board 516000A 1 Solder Roll 551135 1 Battery Snap BAT 590098 1 Battery 590009 1 LCD Window Plate 621002A 1 Range Selector Knob 622003 1 Bushing 624004 Qty Description Part 1 LCD Stopper 6290...

Page 12: ...N5232 Diode see Figure C BAT Battery Snap Insert both wires through the hole and mount the red wire to the hole and the black wire to the hole Solder the wires from the top legend side Notch Notch 24...

Page 13: ...Range Selector Knob LCD Window Plate NOTE If the range selector switch becomes hard to turn then loosen the M2 3 x 8 screw slightly 23 Testing Procedure SECTION C AC voltage and current circuit Measu...

Page 14: ...R1 9M 5 1 2W white black black yellow green 179051 1 VR1 200 220 Potentiometer 191320 Note Some resistors may not have a color coding but they will have the value imprinted on them Note Resistor toler...

Page 15: ...es orange white red red brown see Figure E C1 22 F Lytic Capacitor see Figure F R27 2k 1 1 4W Res red blk blk brown brown see Figure E R28 1 3k 1 1 4W Res brn orange blk brn brn see Figure E R46 5 6k...

Page 16: ...of 1 10 amps If the tests are not working check for cold solder joints and part values Turn the meter off and remove the battery and test leads DO NOT PROCEED TO SECTION C WITHOUT YOUR INSTRUCTOR S AP...

Page 17: ...der the socket to the PC board Insert the IC into the socket with the notch as shown below Socket Notch C8 Figure I Mount the capacitor with the negative lead in the negative hole and the positive lea...

Page 18: ...own brown brown 141930 1 R40 4 12k 1 1 4W yellow brown red brown brown 144130 1 R9 9k 1 1 4W white black black brown brown 149030 1 R38 10k 1 1 4W brown black black red brown 151030 1 R43 11k 1 1 4W b...

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Elenco Electronics M-2665K, Assembly And Instruction Manual

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