Service Call For Others - Toshiba e-STUDIO350 Service Handbook

5.1.15

Service call for others

[C940] Engine-CPU is abnormal
Is the "Call for Service" displayed even after the power is turned OFF and back ON?
NO Leave it and see what happens.
YES
1) Check if the circuit pattern between the Engine-CPU and FROM is short circuited or open
circuited.
2) Replace the LGC board if this error occurs frequently.
[C970] High-voltage transformer abnormality
(1) Is the main charger installed securely?
(2) Check if the spring of high-voltage supply contact point is deformed.
(3) Check if the charger wire is broken or the main charger grid is deformed.
(4) Check if any foreign matters are on the charger wire or main charger grid.
(5) Is the transfer/separation charger installed securely?
(6) Check if the transfer/separation charger wire is broken or unhooked.
(7) Check if any foreign matter is on the transfer/separation charger wire.
[CDF0] Initialize error of the offset tray
(1) Check if each connector between the OCT motor and OCT board (CN261) is disconnected.
(2) Check if each connector between the OCT board (CN261) and LGC board (CN302) is discon-
nected.
(3) Check if each connector pin is removed or the harness is broken.
(4) Check if any conductor pattern on the OCT board and LGC board is short circuited or open cir-
cuited.
(5) Replace the OCT motor.
(6) Replace the OCT board.
(7) Replace the LGC board.
[F090] SRAM abnormality on the SYS board
(1) Turn the power OFF and start up the Setting Mode (08).
(2) When the message "SRAM ERROR DOES IT INITIALIZE?" is displayed on the LCD, press [INI-
TIALIZE]. (SRAM is cleared.)
(3) Turn the power OFF and then back ON. If the error is not recovered, replace the SYS board.
© 2003 - 2008 TOSHIBA TEC CORPORATION All rights reserved
5 - 91
e-STUDIO350/352/353/450/452/453
TROUBLESHOOTING
5