Chapter 5: Repair Procedures
Heater Housing Repairs
Service Manual 5-9
5.3.6 Replacing an Observation Light Bulb
1. Use a straight blade screwdriver to remove the knurled screw that secures the light tunnel to the lower
heater housing, tilt the tunnel forward and take it out of the housing.
2. Disconnect the bulb electrical connector and slide the bulb from its spring retainer.
3. After replacing the bulb, confirm that the glass lens is properly aligned.
Electronic
enclosure
Outlet panel
Observation halogen light transformer
Enclosure rear panel
Power board
Control board
Alarm light board
FIGURE 5-6. Electronics Enclosure Disassembly
Caution: Bulbs may be hot! Turn lamp off and allow 5 minutes to cool before
replacing bulb.
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