Replacement Of Pc Boards; Replacing Main Board; Replacing Sram Board - Toshiba e-studio166 Service Handbook

5.3

Replacement of PC Boards

5.3.1

Replacing MAIN board

<<CAUTION IN REPLACING the MAIN board>>
The procedure for replacing the MAIN board is as follows.
<After replacing the MAIN board>
(1) Install SRAM board to the new MAIN board (from the old MAIN board).
(2) [If an expansion memory (GC-1240) has already been installed]
Install expansion memory (GC-1240) to the new MAIN board (from the old MAIN board).
(3) Update the version of system ROMs (System Firmware, OS data, UI data) (The ROMs had been
used for the old MAIN board).
*See P. 6-1 "6. FIRMWARE UPDATING" for the details of System ROM update.
Perform 08-389 (Copying total counter / SRAM board → MAIN board) to recover the total
(4)
counter.
(5) Be sure to perform "05-310" with the platen cover or the ADF closed after replacing the MAIN
board.
5.3.2

Replacing SRAM board

<<CAUTION IN REPLACING the SRAM board>>
The procedure for replacing the SRAM board is shown below:
* If the adjustment values in the SRAM can be viewed, print them out in the list print mode before
replacing the SRAM board.
(1) Take off the MAIN board from the equipment.
(2) Take off the SRAM board including the locking support from the equipment.
(3) Remove the socket and the battery from the SRAM board, and install them to the new SRAM
board.
(4) Install the new SRAM board to the MAIN board, and the MAIN board to the equipment.
(5) While pressing [1], [3] and [*] simultaneously, turn the power ON. (RAM clear)
(6) Turn the power OFF and then start with the setting mode (08).
(7) Perform 08-655 (Reset the 05/08 codes).
(8) Perform 08-388 (Copying total counter / MAIN board -> SRAM board) to recover the total
counter.
(9) While pressing [1], [3] and [#] simultaneously, turn the power ON. (RAM clear)
(10) Turn the power OFF.
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