Martel Electronics 235 User Manual
Page 83

Fuse type
Littelfuse PN
Beta PN
2AG 1/10 A
225.100
904114-003
2AG 1 A
225001
905002-001
2AG 1/4 A
225.250
905009-001
Model 230
Fuse Location
Function
Type
F1
input/output
mA input
2AG 1/10 A
F3
input/output
V/mV/Ω out
2AG 1/4 A
F1
main power
Pri. Power
2AG 1 A
F2
main power
Charger
2AG 1 A
Model 235
Fuse Location
Function
Type
F1
input/output
mA input
2AG 1/10 A
F4
input/output
V/mV/Ω out
2AG 1/4 A
F1
main power
Pri. Power
2AG 1 A
F2
main power
Charger
2AG 1 A
5.
Replace the blown fuse with a new one of the proper type.
6.
Reassembly is essentially the reverse of the above procedure.
Position the cover loosely and attach the keypad connector.
Carefully lower the cover into place, making sure it clears the
power supply PCB at the top and aligns with the jacks at the
bottom. Before installing the screws, turn the unit on and check
the keypad operation. Testing any horizontal row of keys will
verify that all contacts are properly made. Turn the unit back off
and reinstall the screws.
Service Information
230/235
78
NOTE: Spare fuses are shipped with each calibrator. Additional
fuses may be obtained from Martel Electronics Corp. or from
local distributors.