Instruction manual

11.0 INSPECTION and MAINTENANCE SM425 INSTRUCTION MANUAL
Figure 11-5 LCD Contrast adjustment
11.2.3 Replacing Fuses
The location of the converter fuse is shown in Figure 11-6. If the fuse blows, replace it using the following
procedure.
If a replaced fuse blows out immediately, there may be a problem in the circuitry. Thoroughly go over the
circuits to find out why the fuse has blown. This fuse protects the main power supply circuit and does not
provide overcurrent protection for the heater temperature control circuit. For overcurrent protection
circuitry, refer to Section 1.62.2.2, "Heater Temperature Failure."
42500001 REV A 183