Ricoh FT4430 Service Manual page 151

16 April '88
3. Exposure Lamp Replacement
Do not touch the reflector [A] or the new exposure lamp with your bare
hands. Use a strip of paper as shown. (Finger oil marks on the lamp or
reflectors will be affected by the heat and will result in discoloration.)
Turn off the main switch.
1 .
2 . Remove the exposure glass. (See Exposure Glass Removal.)
Move the first scanner to the position where the rear frame [B] is cut out.
3 .
4 . Remove the front terminal cover [C] (1 screw) and the reflector cover [D]
(2 screws) after unhooking the fiber optics cables.
5 . Wrap a strip of paper around the exposure lamp [E] as shown.
Press the release lever [F] on the rear lamp terminal as shown and take
6 .
out the lamp.
7 . Install a new lamp using a strip of paper. (Set the front terminal first.)
NOTE: The blister [G] on the lamp must point towards the opening of the
reflector as shown.
8. Reassemble the 1st scanner.
NOTE: When reinstalling the front terminal cover, be careful not to damage
the fiber optics cable.
9. Check the exposure lamp position, the light intensity and auto ID sensor.
(See Exposure Lamp Position, Light Intensity and Auto ID Sensor Adjust-
merits. )
[ D ]
[ G ]
[ E ]
5-4
1