Ricoh D146 Service Manual page 1757

System Maintenance
4.1.2 MAINTENANCE MODES
The different service modes and their roles are as follows.
* For security reasons, the specific methods for switching between service modes are not given
here. Please check according to the usual procedure.
Mode
MFP SP mode
Screen service mode
Recovery mode
4.1.3 VERSION UPDATE
Android firmware (OS) version update is performed from recovery mode.

If Quick Startup is set, it is not possible to shift to recovery mode. It is necessary to
perform either shutdown from Normal Startup Mode, or shutdown by the power OFF
procedure prior to maintenance (before disconnecting the power supply plug).

If extended security for firmware update is set to "prohibit", it is not possible to shift to
recovery mode. (System Settings>Administrator Tools>Extended Security is displayed in
log-on screen for machine administrator)

If firmware update is required with the above settings, ask customer (machine
administrator) to request a change of the setting.
1. Turn off the main power.
2. Insert the SD card in the control unit SD slot, and start the recovery mode.
3. Select "apply update from sdcard.", and press [Home] key.

Screen operations are as follows.

OK: [HOME] key.

UP: [Return] key.
D148
Application
MFP (engine)

Conventional SP mode
Android-specific screen service
mode

Android application installation
and version update

Screen self-diagnosis check
Android OS maintenance

OS update

Full data format
Since a 10-keypad is used
for mode shift, mode shift
must be performed from a
GW application.
Idem
-
20
Remarks
SM