Ricoh FT5233 Service Manual page 187

SERVICE PROGRAM MODE
4. Enter the factory-set values in the following SP modes:
40: Jogger span (Duplex machine only)
41: Lead edge erase
42: Registration
43: Vertical magnification
44: Horizontal magnification
45: Duplex magnification (Duplex machine only)
47: Focus adjustment
50: Lens error correction
62: Grid reference voltage
161: Grid volt/M-CH drum current check (P)
162: T-CH PWM/drum current check
163: D-CH (AC) PWM/drum current check
164: D-CH (DC) PWM/drum current check
NOTE: Open the front cover and remove the cover plate (1 screw) from
the front upper cover. There is an SP data table sheet inside the
front upper cover which gives the above factory-set values.
5. Turn off the main switch.
6. Clean the used toner tank because the toner end counter has been
cleared.
7. Replace the OPC drum with a new one.
NOTE: Since the drum counter for the process control has been cleared,
the old drum cannot be used. If the old drum is used after all
memory is cleared, a dirty background and/or toner scattering will
appear on copies sooner or later because proper V
will not be applied to the drum.
8. Clean the optics, sensors, and inside of the machine if necessary.
9. If the high voltage supply board - CTBG and/or -D is not the original one,
do the following:
1) Clean the corona unit casings and replace the corona
2) Enter to the SP mode by the access procedure 2.
3) Enter the grid voltage correction data in SP62 referring to
4) Perform the auto drum current adjustment by SP57.
10. Enter the SP mode by access procedure 2.
wires with new ones.
the label on the high voltage supply board - CTBG.
4-10
12 February 1992
correction
G