KYORITSU 4106 - Manual (Page 45)

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13. Before Sending for Service
If this instrument should fail to operate correctly, return it to your nearest
Distributor stating the exact nature of the fault. Before returning the
instrument, follow the trouble-shooting guide shown below.
● Instrument doesn't power on
Open the Battery Compartment Cover at the backside of the instrument,
and check whether batteries are missing or they are installed in correct
polarity. (Refer to “11. Battery and Fuse Replacement”) Batteries are not
installed in the instrument at the time of shipment.
● Incapable of setting “Rk” (Fig.64, 65)
Selectable “Rk” values at 2Ω and 20Ω Ranges are up to 9Ω. Are the
Test Leads short-circuited? A break in Test Leads or burnout of Fuse is
suspected when the LCD reads “OL” while the connection is correct and
the cords are shorted.
Rk setting is available at 20Ω or lower Ranges. (Fig.66)
Rk cannot be set when measuring earth resistivity. (Fig.67)
( Refer to “8-2-7 Setting for the residual resistance (Rk) on the Test
Leads”).
Fig. 64 Fig. 65
Fig. 66
Fig. 67