Ricoh FT5535 Service Manual page 121

Rev. 7/95
1. Turn off the main switch and unplug the machine.
2. Remove the exposure glass. (See Exposure Glass Removal.)
3. Move the scanner lamp to the fan duct in the rear frame (about 150 mm from
the home position).
4. Place a strip of paper around the exposure lamp [A].
5. Release the exposure lamp from the rear terminal [B] while pressing the rear
terminal tab in the direction shown above.
NOTE: Push the terminal very gently, or it will be damaged.
6. Slide the exposure lamp into the rear cutout, and take out the exposure lamp
from the front side.
7. Install a new lamp. Use a strip of paper to hold the lamp. Set the front
terminal [C] first.
NOTE: 1) Make sure that the exposure lamp is properly positioned at the
front and rear terminals. (The slot [D] and terminal pin should
engage.)
2) Return the first scanner to the original position and make sure that
the first scanner moves smoothly.
3) Clean the optics components and perform the following SP modes
in the following order: SP4-001, SP4-201, SP3-105.
2.2.1 Main Fusing Lamp Interchangeability
The main fusing lamp for the FT4022/4522 (A161/A162) is different from that of
the FT4027/4527 (A157/A160). The total span of all the filaments has been
expanded for the FT4022/4522 (A161/A162) copier to compensate for the
difference in the copies per minute and the warm-up time.
There is more overlap of the main and secondary fusing lamp filaments in the
FT4022/4527 (A161/A162) compared with the FT4027/4527 (A157/A160) copier.
This allows a faster heat up time around the edges of the hot roller.
To distinguish between the two types of lamp, the lamp connector color at the
front side is different.
FT4022/4527 A161/A162 - Blue
FT4027/4527 A157/A160 - White
NOTE: If an FT4022/4522(A161/A162) lamp is installed in a FT4027/4527
(A157/A160) copier, faster warm-up may be achieved, but fusing
problems may occur during multi-copy runs due to a lack of heat for the
higher copy speed.
The secondary fusing lamp is the same as for the base copier.
FSM 5-5 FT5535/4527/4522