Test-products-international 126 Bedienungsanleitung PDF herunterladen (Seite 24)

G. TROUBLE SHOOTING GUIDE

Problem

Probable Causes

Does not power up

• Dead or defective battery

• Broken wire from battery

snap to PCB

Won’t display current readings

• Open fuse

• Open test lead

• Improperly connected to

circuit under test

All functions except ohms read high

• Very weak battery that will

not turn on the low battery

indicator on the LCD

ACV do not read

• Very weak battery that will

not turn on the low battery

indicator on the LCD

F. MAINTENANCE

1. Battery Replacement: The 126 will display BAT when

the two internal 1.5 Volt “AA” batteries need replace-

ment. Batteries are replaced as follows:

a. Disconnect and remove all test leads from live

circuits and from the 126.

b. Remove 126 from protective boot.

c. Remove the four screws from back of housing.

d. Carefully pull apart front and rear instrument

housing.

e. Remove old batteries and replace with new

batteries.

f. Reassemble instrument in reverse order from

above.

2. Fuse Replacement: Both the A and mAµA input jacks

are fuse protected. If either do not function, replace

fuse as follows:

a. Disconnect and remove all test leads from live

circuits and from the 126.

b. Remove 126 from protective boot.

c. Remove the three screws from back of housing.

d. Carefully pull apart the front and rear instrument

housing.

e. Remove the old fuse(s) and replace it with new

fuse(s).

f. Reassemble the instrument in reverse order

from above.

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