Toshiba e-STUDIO500P manual Lvps assembly. See Low voltage power supply removal on

	FRU	Action
5	LVPS	CAUTION: When taking measurements for AC power, observe all
	LVPS to fuser AC cable	safety precautions.
		Check the AC line voltage between the pins on the fuser end of the
		LPVS to fuser AC cable. If the voltage is correct, unplug the AC
		power cord from the LVPS cable. If the voltage is correct, unplug the
		AC power cord from the LVPS, pull the LVPS out far enough to be
		able to check the voltage between CN-1 and CN1-3 on the LVPS
		board. Plug in the power cord, turn the printer on and check the
		voltage. If correct, replace the LVPS to fuser AC cable; if incorrect,
		replace the LVPS assembly.
		Note: If the fuses in the LVPS are blown, the LVPS assembly must be
		replaced.
6	Fuser top cover assembly	Check to make sure that the thermistor is installed correctly to J5 on
	(thermistor, thermistor	the fuser control card. If installed correctly check the cable for any
	cable)	signs of damage. If any problems are found, replace the fuser top
	Fuser to system board DC	cover assembly. If no problem is found, check the fuser to system
		board DC cable for correct installation at J1 on the fuser control card.
	cable
		If no problem is found, check the fuser to system board cable for
		correct installation at J10 on the system board.

7Error code 920.06 Carefully check the installation of the LVPS to system board cable to

	displayed	J27 on the system board and to CN2 on the LVPS. If the cable is not
	LVPS	seated or installed properly, reseat the cable and retry the printer. If
		the cable is installed correctly, replace the following FRUs in the order
	System board
		shown:
	System board to LVPS	•	LVPS assembly. See “Low voltage power supply removal” on
	cable		page 4-54.
		•	System board assembly. See “System board and inner shield
			removal” on page 4-76.
		•	LVPS to system board cable.
8	Fuser assembly	If no problem is found up to this point, then replace the following in
		the order shown:
		•	Fuser assembly. See “Fuser assembly removal” on page 4-26.
		•	System board assembly. See “System board and inner shield
			removal” on page 4-76.
		•	LVPS. See “Low voltage power supply removal” on
			page 4-54.

2-88Service Manual