LG Electronics GSA-4168B, GSA-4165B, GSA-4167B service manual SSB Byte21,22

No.	Error Code	Contents of fail	Fail Analysis		Block Diagram
	SSB Byte21,22
16	54xx	DPP Amp Adjust NG.	1) Check Pickup FFC Connection.		No.07
		(CD Disc Only)	2) Exchange Pickup.
			3)	Check solder of IC101circumference.
				(pin#1,2,3 pin#87-90,
				TE_Servo: R101, C101)
			4)	Exchange IC101(AFE).
			5) Exchange IC301(MPU & DSP).
17	55xx	Lens Shift/ Tilt Adjust NG.	1) Check Pickup FFC Connection.		No.14
		(CD Disc Only)	2) Exchange Pickup.
			3)	Check solder of IC601 circumference.
			4)	Exchange IC601.
			5)	Check solder of IC301 circumference.
			6)	Exchange IC301
			7)	Excahange Slider Motor
18	56xx	Focus Level Adjust NG.	1) Check Pickup FFC Connection.		No.06
			2)	Exchange Pickup.
			3)	Check solder of IC101circumference.
				(pin#1,2,3 pin#87-90,
				PE_Servo: R103, C406)
			4)	Exchange IC101(AFE).
			5) Exchange IC301(MPU & DSP).
19	57xx	HFPE Amp/Gain Adjust NG.	1) Check Pickup FFC Connection.		No.13
			2)	Exchange Pickup.
			3)	Check solder of IC101circumference.
				(pin#6,7 R106, C106, R107, C107)
			4)	Exchange IC101(AFE).
			5) Exchange IC301(MPU & DSP).
20	58xx	Lens Sensitivity Adjust NG.	1) Check Pickup FFC Connection.		No.17
			2)	Exchange Pickup.
			3)	Check solder of IC301circumference.
			4) Exchange IC301(MPU & DSP).
21	59xx	Spindle Offset Adjust NG.	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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