Ricoh A151 Field Service Manual page 67

– Clear All Memory (SP99) –
CAUTION: Memory all clear mode (SP99) clears all the correction data
for process control and software counters, and returns all
the modes to the default settings. Normally, SP99 should
not be used.
This procedure is required only when the copier
malfunctions due to a damaged RAM Pack or when
replacing the RAM Pack for any reason.
1. Turn off the main switch.
2. Turn on DPS101-2 and short-circuit JPS101-C (Lower).
3. Turn on the main switch.
4. Enter "99" by the numeral keys and then press the Auto Image Density
key to view data.
5. Enter "1" by the numeral key and then press the Auto Image Density key.
NOTE: The data "1" blinks 5 times when the above procedure is
completed.
6. Clean the used toner tank since the toner end counter has been cleared.
(See Used Toner Removal.)
CAUTION: Skipping this step will cause the used toner overflow
condition not to be detected properly.
7. Replace the OPC drum with a new one. (See Drum Replacement.)
CAUTION: Since the drum motor rotation time (SP57) for the drum
wear correction has been cleared, the old drum cannot be
used. If the old drum is used after all memory is cleared,
dirty background may occur.
8. Load new developer. (See Developer Replacement.)
NOTE: Since the software counter for the development bias voltage in
the toner detection cycle has been cleared, –20 volts will be
applied to the development roller for the initial 499 copies.
9. Clean the optics, sensors, and inside of the copier if necessary.
10. Refer to the "FACTORY SETTING" table located inside the upper slit of
the inner cover and enter the data for:
(1) SP60: Standard Image Grid Voltage Setting
(2) SP62: Standard ID Sensor Grid Voltage Setting
FSM 4-11 A151/A152