Epson Photo750 manual Unit Repair Printer Mechanism, Repair of the Printer Mechanism

EPSON Stylus Photo 750 Revision A

3.5 Unit Repair (Printer Mechanism)

This section provides instruction for repairing mechanism. It describes various problems, symptom, likely causes, checkpoints, and solutions. Select appropriate symptom from the the table and check each parts and its function as describes in the checkpoint.

Table 3-10. Repair of the Printer Mechanism

Symptom	Condition	Cause	Check Point	Solution
			Manually drive
		Foreign	the PF drive	Remove any
		substances	gear and
				foreign
		are loaded in	check if it
				objects.
		the PF gears.	rotates
			normally.
	Abnormal PF
			Check the
	motor
Abnormal			inner coil
	operation
Pump			resistance and
	when the
Mechanism			see if there is
	power is
			any
	turned on.
		The PF motor	disconnection	Exchange the
		is defective.	of the coil.	PF motor.
			(see
			Table 3-1,
			“Motor, Coil
			Resistance,”
			on page 39)
		The pump	Check the	Exchange the
	Used ink does	tube is
Defective			tube visually.	tube.
		crashed.
	not drain to
pump
	the waste ink	The cap is	Check the	Change the
absorption.
	pad.
		damaged or	tube visually.	cap
		deformed.		mechanism.

Table 3-11. Repair of the Printer Mechanism

Symptom	Condition	Cause	Check Point	Solution
		Foreign	Check visually
		substances		Remove any
			if there is any
		are loaded in		foreign
			substances or
		the CR drive		objects.
			not.
		gears.
	Carriage		Check the
			inner coil
	operation is
			resistance and
	abnormal
			see if there is
	when tuning
			any
	on the power.	The CR motor		Exchange the
			disconnection
		is defective.		CR motor.
			of the coil.
			(Table 3-1,
			“Motor, Coil
Abnormal			Resistance,”
			on page 39)
carriage
operation.			Manually
			move the
			carriage and	Exchange the
			check if it	tube.
			moves
	Carriage		smoothly.
	operation is
		Carriage		Repair the
	abnormal		Check the
		movement is		tension
	during the		tension of the
		not smooth.		mechanism or
	printing		timing belt.
				replace it.
	operation.
			Check if there	Remove any
			is any foreign
				foreign
			substances on
				objects.
			the carriage
			path.

Troubleshooting Unit Repair (Printer Mechanism) 47