Toshiba e-Studio 2010AC

Check the following items when the equipment does not start due to an abnormality in the power supply side even if the power has been turned ON.

1. When the [Power] LED on the control panel does not light. / When the fan on the SYS board does not work. / The LCD screen does not display.

Check item	Measures
Power voltage	Is the power voltage within +/- 10% of the rated voltage?
Power cable	Check if the harnesses are open circuited or if contact failure occurs in the connector.
Inlet [1][2]	Check if the inlet [1] and its harness [2] are open circuited or disconnected.
Main power switch [4]	Check if the main power switch [4] and its harness [5] are open circuited or disconnected.
Switching regulator (LVPS) [3]	Check if the harness [2] is inserted into the connectors (CN501, CN502) of the switching regulator [3] properly. Check if the harness [5] is inserted into the connector (CN503) of the switching regulator [3] properly.
	Check if the fuse (F101) has melted. • If the fuse (F101) cannot be blown out even when it has been replaced and the damp heater switch has been turned OFF (in the equipment with the damp heater installed) and then the main power switch is turned ON, exchange the damp heater in question. Remarks: If the resistance value of the damp heater is as below, there will be an abnormality in the damp heater in question. Scanner damp heater: 714Ω -10% or below Drum damp heater (right): 830Ω -10% or below Drum damp heater (left): 830Ω -10% or below Drawer damp heater: 2KΩ -10% or below • If the fuse (F101) cannot be blown out even when it has been replaced and the fuser unit has been taken off and then the main power switch is turned ON, exchange the fuser unit. • If the problem still persists even though the above steps have been carried out, replace the switching regulator [3].
	Check if the fuse (F102) has melted. • Replace the switching regulator [3].
	Check if the CN511 - 5 pin and 6 pin of the switching regulator output 5V +/ - 5%. • Output when the connectors of the control panel are disconnected: Replace the control panel. • Output when all of the connectors of the SYS board are disconnected: Replace the SYS board. • Output when all of the connectors of the LGC board are disconnected: Replace the LGC board. • If the problem still persists even though the above steps have been carried out, replace the switching regulator [3].

2. When the [Power] LED on the control panel lights. / When the fan on the SYS board does not work. / The LCD screen does not display.

Check item	Measures
Options	Check if this problem can be resolved when the connectors of the paper handling options are disconnected and then the power is turned OFF and then back ON. (Does the LCD screen display?) • Check if there is abnormality such as catching in the harnesses of the applicable options.
LGC board	Check if this problem can be resolved when the ADU is opened. (Does the LCD screen display?) If the problem is resolved (the LCD screen displays), close all covers and check the following items. • The LCD screen displays when CN342 is disconnected: Check or replace the fuser motor and the harness. • The LCD screen displays when CN366 is disconnected: Check or replace the ozone exhaust fan and the harness. • The LCD screen displays when CN349 is disconnected: Check or replace the suctioning fan and the harness. • The LCD screen displays when CN351 is disconnected: Check or replace the sensor shutter solenoid and the harness. • The LCD screen displays when CN352 is disconnected: Check or replace the high-voltage transformer and the harness. • The LCD screen displays when CN360 is disconnected: Check or replace the discharge LED (Y, M, C and K) and the harness. • The LCD screen displays when CN367 is disconnected: Check or replace the paper feeding/developer unit drive motor and the harness. Check or replace the registration clutch and the harness. Check or replace the feed clutch and the harness. • The LCD screen displays when CN368 is disconnected: Check or replace the mono/color switching motor and the harness. Check or replace the 1st transfer contact/release clutch and the harness. • The LCD screen displays when CN369 is disconnected: Replace the ADU board. Check or replace the CFD board and the harness. • If the problem still persists even though the above items have been done, replace the LGC board.
CFD board	• The LCD screen displays when CN409 is disconnected: Check or replace the bypass feed clutch and the harness. • If the problem still persists even though the above items have been done, replace the CFD board.
SYS board	The LCD screen displays when CN125 is disconnected: Replace the SYS board.
Switching regulator (LVPS) [3]	When the problem is not resolved (the LCD screen does not display) even if the front cover or the side cover is opened, replace the switching regulator.