Circuit Related Service Call; Sram Abnormality On The Sys Board; [F350] Su Board Abnormality; [F400] Sys Board Abnormality - Toshiba e-STUDIO477S Service Manual

5.3.5

Circuit related service call

[F090] SRAM abnormality on the SYS board
Classification
Circuit related service call
Check item
SRAM
SYS board
Replacement part
SRAM on the SYS board
SYS board

[F350] SU board abnormality

Classification
Circuit related service call
Check item
Combination of the firmware
version
SU board
Replacement part
SU board

[F400] SYS board abnormality

Classification
Circuit related service call
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SRAM abnormality on the SYS board

Check the connection of SRAM
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. (SRAM is initialized.)
3. After the confirmation message is displayed, press the
[INTERRUPT] button.
4. Perform the panel calibration (08-9050).
5. Enter the serial number (08-9601). Match it with the serial
number on the label attached to the rear cover of the
equipment.
6. Initialize the NIC information (08-9083).
7. Turn the power OFF and then start up with the Adjustment
mode (05).
8. Perform "Automatic gamma adjustment" <PPC> (05-7165).
(using [10][FAX] test pattern)
9. Turn the power OFF and then back ON.
Board check
SU board abnormality
• Check the combination of the firmware version of the system
firmware, PU firmware, and SU firmware.
• Reinstall the SU firmware.
Board check
SYS board abnormality
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Contents
Measure
Measure
Contents
Measure
Measure
Contents
e-STUDIO477S/527S/477SL
ERROR CODE AND TROUBLESHOOTING
5