Jenway 6850 - Manual (Page 53)

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3. Whilst wearing cotton gloves remove the
defective tungsten lamp and replace with a
new one.
4. Switch on the power and move the Switch
Mirror down into the position shown in the
picture opposite. Observing the entrance
window on the instrument’s monochromator,
adjust the tungsten lamp until the light is
centred on the entrance hole.
5. Disconnect the power and re-attach the lamp
compartment cover and the top case of the
spectrophotometer.
12.2.2 Deuterium Lamp Replacement
1. Unscrew the 4 screws on the
spectrophotometer’s top case (see 12.2.1)
and remove the cover of the
spectrophotometer.
2. Unscrew the 2 screws on the top of the lamp
chamber and remove the cover. (see 12.2.1)
3. Unscrew the 2 screws on the deuterium lamp
flange (No.1), unplug the connector on the
power board (No. 2) and remove the
deuterium lamp. Whilst wearing cotton gloves
replace with a new deuterium lamp. Re-fix the
2 screws and reconnect the power cable.
4. Re-attach the lamp compartment cover and
the top case of the spectrophotometer.
D2 Lamp
Tungsten
Lamp
Switch
Mirror
Entrance Window
Entrance
Hole