Chapter 5: Repair Procedures
Electronic Enclosure Repairs
Service Manual 5-13
5.4.5 Observation Light Dimmer Control (Figure 5-8)
1. For wall mount models, remove the heater head from the wall bracket as instructed in section 5.2.
2. Loosen the 2 captive screws at the top of the enclosures rear panel, then tilt the panel down and lift the
2 tabs at the bottom of the panel up out of the slots that they seat in.
3. Loosen the 4 captive screws that secure the power board panel and tilt it down away from the unit.
4. To replace the observation light switch, pull the switch knob off the front.
5. Using a 5.5 mm wrench remove the KEPS nuts from the dimmer control mounting bracket.
6. Remove the 1/2” hex nut from the dimmer control and mounting bracket assembly.
7. Disconnect the electrical connector from the power board and remove the dimmer control.
5.4.6 Standby Switch Replacement (Figure 5-8)
1. For wall mount models, remove the heater head from the wall bracket as instructed in section 5.2.
2. Loosen the 2 captive screws at the top of the enclosures rear panel, then tilt the panel down and lift the
2 tabs at the bottom of the panel up out of the slots that they seat in.
3. Loosen the 4 captive screws that secure the power board panel and tilt it down away from the unit.
4. To replace the standby switch, remove wires from the rear of switch.
5. Press tabs on switch and remove it from the front.
Observation light switch
Electronic enclosure
Standby switch
LCD display
Observation
light knob
Touch panel
Alarm light board
Probe panel interface board
FIGURE 5-8. Display and Touch Panel
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