Chapter 5: Repair Procedures
Electronic Enclosure Repairs
Service Manual 5-11
5.4.2 Control Board (Figure 5-6 and Figure 5-7)
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 enclosure’s 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. Disconnect the control board’s 10 electrical connectors.
5. Loosen the 2 captive screws that secure the control board, and remove the board.
6. Upon control board replacement, make sure to select the correct product model on the screen display
only the first time that the unit is turned on after control board replacement. (See section 1.1 for
information on warmer models).
5.4.3 Lithium-Ion Battery Replacement (Figure 5-6 and Figure 5-7)
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 enclosure’s 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. Note the polarity and be sure to install the new lithium ion battery with the same polarity. When
replacing the battery use a small screwdriver to slide the old lithium ion battery out of its holder.
Transformer bracket
Observation light transformer
Power board
FIGURE 5-7. Power Board Panel
Power board panel
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