Wahl 360X Manual de Instruções descarregar pdf (Página 15)

392 SERIES TROUBLE SHOOTING PROCEDURE

Step Problem Action to be Performed If Correct If Incorrect

13.

Set the Wahl Calibrator to 212°F

and insert into the T/C connector.

Use DVM to measure the follow-

ing voltages U3-12 should be .255

to .275V U3-13 should be .071 to

.079V

*U3-1 should be .580 to .620V

*U3-3 should be .660 to .710V

Proceed to

next meas-

urement.

If any voltage is

incorrect, check

R1-R17, R35,

R36, CR6 and

CR7. Also check

wires from con-

nector to circuit

board.

*U34 should be .660 to .710V

U3-14 should be .017 to .079V

U3-15 should be .580 to .620V

Proceed to

next step.

Replace U3 and

if problem is not

corrected, go to

Step 16.

14.

Check the output of U1-4 for a 0

to 6 volt square wave of approx.

10 kHz æ 2 kHz.

Replace CR1

and CR2.

Proceed to next

step.

15.

Check for a sawtooth wave at U1-

1. It should have a voltage level of

1.8 to +4.2 volts.

Replace U1.

If display

still reads

-OL-replace

U4.

Replace C67 and

recheck

U1-1. If problem

is not corrected

go to step 16.

16.

Return unit to factory for repair.

*NOTE: Does not apply to 392MX and 392M with Serial Numbers before N120

11.0 ACCESSORIES

392 SERIES CALIBRATORS

Model Number Usable With Meter Calibration Points

CAL392-HT

392E, 392EX, 392EVX,

392M, 392MX, 392VX

and 700M

-58°F, 32°F, 212°F, 284°F, 752°F

-50°C, 0°C, 100°C, 140°, 400°C

CAL392HP-HT 392HP only

CAL392-LT

392E, 392EX, 392EVX,

392M, 392MX, 392VX

Ice Point to Boil

Calibrator

32°F, 68°F, 104°F, 140°F, 212°

0°C, 20°C, 40°C, 60°C, 100°C

CAL392HP-LT

392HP only

Ice Point to Boil

Calibrator

392 SERIES METER ACCESSORIES

Model Number Description

DA-4 Silicone Paste

DA-6 Belt-Clip Meter Case with Hand Strap

DA-10 Nylon Safety Wrist Strap

DA-60 Shock-Proof attache-style Instrument Case

11681-1 Spare NiCad Battery Pack

11681-2 Spare NiCad Pack for -S Models

MN1604 Standard 9V Alkaline Battery

MA150 Battery Recharger, 120V AC 50/60Hz

MA150E Battery Recharger, 220V AC 50/60Hz, European

METER OPTIONS

392NIST

Certificate with 3 Standard Calibration Points between 32°F (0°C)

& 500°F (250°C) Meter calibration includes one probe.

392NIST-1

Certificate with 3 User-specified Calibration Points between -40°F

(-40°C) & 600°F (315°C) Meter calibration includes one probe.

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