Toshiba e-STUDIO500P Cover closed switch/cable service check, Dead machine service check, Pin

Cover closed switch/cable service check

	FRU	Action
1	Toner cartridge	Make sure the toner cartridge is correctly installed and that the right
		and left cartridge tracks are not loose or broken. Make sure the cover
		closed switch activation tab on the toner cartridge is not broken and
		that the tab correctly activates the cover closed switch spring.
2	Cover closed switch/cable	Check the cover closed switch for proper mechanical operation. If
	assembly	incorrect, repair as necessary. Disconnect the cover closed switch
		cable from J8 at the system board and measure the voltage at J8-3. It
		measures approximately +5 V dc. If the voltage is incorrect, replace
		the system board. If the voltage is correct, check the voltage at J8-1.
		If the voltage measures greater than +1.0 V dc, replace the system
		board. If the voltage is correct, check the continuity between J8-1 and
		J8-3 on the cable. If no change in continuity occurs as the switch is
		activated, replace the cover open switch/cable assembly. If the
		continuity changes as the switch is activated, replace the system
		board.

Cover closed switch table

J8		Switch status
Pin number	Cover open		Cover closed
Pin 1-3	Open		Closed
Pin 1-2	Closed		Open

Dead machine service check

A dead machine is a condition where the display is blank, the LED on the operator panel is off, no fans turn, no motors turn, and the fuser lamp does not come on.

If a high-capacity input tray is installed, remove the option and check the base printer for correct operation. If the base printer operates correctly, go to “High-capacity feeder input tray service check” on page 2-95. If the base printer continues to not operate correctly, remove any other attached paper handling options.

Warning: Observe all necessary ESD precautions when removing and handling the system board or any installed option cards or assemblies. See “Handling ESD-sensitive parts” on page 4-1.

CAUTION: When you see this symbol, there is a danger from hazardous voltage in the area of the printer where you are working. Unplug the printer before you begin, or use caution if the printer must receive power in order to perform the task.

Remove any input and output paper handling options from the printer.

	FRU	Action
1	Line voltage	Check the AC line voltage. If the line voltage is incorrect, inform the
		customer.
2	AC line cord	Unplug the line cord from the wall outlet and check the line cord for
		damage, such as, a damaged plug, or cut or damaged cord. If
		incorrect, replace the cord. If incorrect, check the continuity of the line
		cord and replace if necessary. If the cord is correct, go to step 3.

2-80Service Manual