Toshiba e-STUDIO556 Service Manual page 378

5.12 SRAM Clear Mode (6C)
5.12.1 Overview
This is a mode in which you can clear particular errors such as F800 or F900 without entering a Service
Technician password.
For example, when SYS-SRAM is in an abnormal status or needs replacement but service technicians
cannot log into the 3C mode, SRAM can be initialized by entering the SRAM clear mode (6C) and
selecting item 1 below.
The content of item 1 in this mode is the same as that of item 4 in the 3C mode (Clear SRAM).
Use this mode to clear the SRAM data when a particular error occurs or service technicians cannot log
in with their password and therefore cannot use the 3C mode.
Functions:
• Sets the serial number of this equipment.
• Clears SRAM data when the 3C mode cannot be used.
• Clears F800 error.
• Clears F900 error.
5.12.2 Operation procedure
[6][C]
[Power]
Turn the power ON while pressing the [6] and the [C] button simultaneously. Then the following screen
is displayed.
Key in the desired item number and then press the [START] button.
SRAM Clear Mode
0. Set Serial Number
1. Clear SRAM
2. Reset Date and Time
3. SRAM Re-Initialize Support
e-STUDIO556/656/756/856/557/657/757/857
SELF-DIAGNOSTIC MODE
[Digital Key] [START]
(Select)
Cancel
[STOP]
Fig. 5-22
Fig. 5-23
SRAM data
[START]
（
clear
or
S/N Input
System Firmware Version
Update Mode
© 2011 - 2014 TOSHIBA TEC CORPORATION All rights reserved
5 - 28
[Power] OFF
）
: xxxx(x.x.x.x)
: 6c Mode