Toshiba E-STUDIO4508A - 8.3.15 Circuit related service call

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ERROR CODE AND TROUBLESHOOTING
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8.3.15 Circuit related service call
[C5A0] EEPROM communication abnormality (LGC board)
[C940] Engine-CPU abnormality
[F090] SRAM abnormality on the SYS board
Classification Error content
Circuit related service call EEPROM communication abnormality (LGC board)
Check item Measure
EEPROM Check if the EEPROM is installed properly.
Parts to be replaced Remark
EEPROM
LGC board
Classification Contents
Circuit related service call Engine-CPU abnormality
Check Item Measure
Main power switch Turn OFF the main power switch, then back ON.
Engine-CPU and FROM Check if the conductor pattern between the Engine-CPU and
FROM is short circuited or open circuited.
LGC board Board check
Replacement part Measure
LGC board
Classification Contents
Circuit related service call SRAM abnormality on the SYS board
Check Item Measure
1. Turn the power OFF and start up the Setting Mode (08).
2. When “SRAM REQUIRES INITIALIZATION” is displayed on
the LCD, check the destination and then press the [START]
button. If the destination is not correct, key in the correct one
and then press the [START] button.
3. After the confirmation message is displayed on the LCD,
press the [INTERRUPT] button (to initialize the SRAM).
4. Perform the panel calibration (08-9050).
5. Perform the initialization after the software version upgrade
(08-9030).
6. Enter the serial number (08-9601). Be sure that the serial
number is the same as that on the identification label
attached on the rear cover of the equipment.
7. Initialize the NIC information (08-9083).
8. Turn the power OFF and then start up with the Adjustment
mode (05).
9. Perform “Data transfer of characteristic value of scanner”
(05-3203).
10.Turn the power OFF and then back ON. If the error is not
recovered, replace the SRAM on the SYS board.