Bosch HBL8x50UC - Bosch Oven Cavity Lights Operation; Replacing Bosch Oven Lamps

Service Manual for Bosch Built-in Wall Ovens
4.3 Lamps
The operation of the cavity lights is determined by the state of the
lights, the state of the oven, and the button(s) pressed. The table
below illustrates the results after each button press.
4.3.1 Replacing Lamps
The number and type of lamps in each cavity will vary, depending on
model. Two types of bulbs are used: 10-watt, 12-volt bi-pin halogen
light bulbs or 40- (30”) or 25-watt (27”) incandescent appliance bulbs.
Current state
of lights
Current state of
oven
Key(s)
Pressed
Resulting state
of lights
Upper Lower Upper Lower Upper Lower
OFF OFF LIGHT ON ON
ON OFF LIGHT ON OFF
OFF ON LIGHT OFF ON
ON ON LIGHT ON ON
DOES NOT MATTER
UPPER+LIGHT
ON OFF
OFF OFF
DOES NOT MATTER
LOWER+LIGHT
OFF ON
OFF OFF LIGHT OFF OFF
ON OFF LIGHT OFF OFF
OFF ON LIGHT ON ON
ON ON LIGHT OFF OFF
DOES NOT MATTER
UPPER+LIGHT
OFF OFF
ON OFF
DOES NOT MATTER
LOWER+LIGHT
ON ON
OFF OFF LIGHT OFF OFF
ON OFF LIGHT ON ON
Handle all bulbs with a clean, dry cloth.
OFF ON LIGHT OFF OFF
ON ON LIGHT OFF OFF
DOES NOT MATTER
UPPER+LIGHT
ON ON
OFF ON
DOES NOT MATTER
LOWER+LIGHT
OFF OFF
OFF OFF LIGHT OFF OFF
ON OFF LIGHT OFF ON
OFF ON LIGHT ON OFF
ON ON LIGHT OFF OFF
DOES NOT MATTER
UPPER+LIGHT
OFF ON
ON ON
DOES NOT MATTER
LOWER+LIGHT
ON OFF
The lights will automatically illuminate whenever the oven door is
opened, and turn off when the door is closed.
m
CAUTION
9 Turn off power to the oven at the fuse or breaker box–light socket
is live with door open.
9 Be sure oven and lights are cool to the touch.
9 Handle glass lenses carefully.
4.3.1.1 Halogen Side Lamp (Vertical-style)
1. Remove racks and rack support.
2. Firmly push the top mounting clip up and back (toward oven
wall), until it releases the glass cover.
Top
mounting
clip
Figure 9 Vertical-style side lamp
Table 4 Operation of cavity lights
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