LG Electronics GSA-4167B, GSA-4168B, GSA-4165B Loading Sequence Error Lead in Error, SSB Byte21,22

3. Loading Sequence Error (Lead in Error)

No.	Error Code	Contents of fail	Fail Analysis		Block Diagram
	SSB Byte21,22
1	2503,2504	RTZ Timeout(Sled Timeout).	1) Check Slider FPC Connection.		No.21
			2)	Check solder of IC601 circumference .
				(pin#2-3, 6, 8-10)
			3)	Exchange IC601.
			4)	Exchange Slider Motor.
2	2020,2021	Focus Fail.	1) Check Pickup FFC Connection.		No.22
			2)	Exchange Pickup.
			3)	Check solder of IC601circumference.
			4)	Exchange IC601(Driver)
			5)	Check solder of IC101circumference.
				(pin#1,2,3pin#87-90,
				FE_Servo: R102, C405)
			6)	Exchange IC101(AFE).
3	2101,2102	Tracking Fail.	1) Check Pickup FFC Connection.		No.22
			2)	Exchange Pickup.
			3)	Check solder of IC601circumference.
			4)	Exchange IC601(Driver).
			5)	Check solder of IC101circumference.
				(pin#1,2,3 pin#87-90,
				TE_Servo: R101, C101).
			6)	Exchange IC101(AFE).
4	2000~2010	Spindle Fail.	1) Check Spindle FFC Connection.		No.18
			2)	Check solder of IC601circumference.
				(pin#12-14)
			3)	Exchange IC601(Driver).
			4)	Exchange Spindle Motor.
			5)	Check solder of IC301circumference.
			6) Exchange IC301(MPU & DSP).

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