Goldstar FFH-V3865AX, FFH-V386AX TROUBLESHOOTING

TROUBLESHOOTING

Turn power on.

	NO		Check power supply circuit.
Is power on?			PN807 PIN5, 6.2V
			PN807 PIN7, 5V
			IC803 PIN 2, 3.3V

YES

	NO						NO
Does initial read work?			Check the DISK turns						Check the connector
									PN801, PN802, PN809
				YES
YES			Check the Laser
				YES
			Check the focus circuit
				YES
			Check the TRAKING circuit
			NO
Does it play?						Check the tracking servo circuit.
YES

Does it output audio?	NO
	Check the PN807 PIN1, 3

OK

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Fails to initial read

Disc motor turns

NO

Check the Voltage change of PN 809

NO

Defective connector

PIN20(OPEN, CLOSE)

PN809

YES

YES

Does RF waveform appear?

NO

Check the Data transmission from

NO

Defective connector

IC801 Pin3

PN809 pin11 to CD DSP

PN809, Defective

5V

MICOM

0V

YES

Check the Data transmission from

Defective connector

PN809 pin13 to MICOM

NO

PN809, Defective

5V

IC801

0V

YES

Check the change of SLDO

2V

NO

Defective IC801

Voltage(IC801 pin23)

1V

0V

YES

YES

Check the change of SL +,

1.2V

NO

Defective IC802

SL - Voltage

0V

(IC802 pin 18, 19)

0.8V

YES

Defective contact PN802

Defective PICK-UP

Does laser light?

A

YES

Does FA+ waveform appear at

IC802 pin13?

NO

focus coil drive wareform.

YES
Does TE waveform appear at	NO
801 pin 15?		B
TRACKING ERROR wareform
YES

Is rotation normal?

NO

YES

Is there no dropout of RF signal?

	Defective IC801
YES	Defective PICK-UP

- 2-4 -

A	Laser does not light.

Is “3.5V” applied to pin 70 of IC 801?

YES

NO

NO

NO

Did pickup return to

Is data transferred from

Defective MICOM.

innermost circular?

MICOM IC ?

YES

YES

Does voltage appear at IC

NO

802 pin 17, 18?

Defective IC 801, 802

YES		Defective slide motor and/or
		connector.

Does it stop at inner pick

Is defect output from LM

circular after shift?

SW applied to pin 2 of

YES

PN802?

NO

Defective LMT SW and/or

connector.

OPEN

CLOSE

YES

Defective MICOM.

YES

NO

Is power supplied to laser Q801?

Defective connector.

(Q 801 collector: about 1.8V)

R808»1.0V

YES

Defective Q 801 and/or laser.

YES

Does laser current flow?

YES

R808«1.0V

Defective laser and/or

1.0V across R808

connector.

- 2-5 -

B	Laser lights
				NO				NO
	Does lens move up/down?									Defective IC801
						Check the signal of
						FOCUS SEARCH
		YES				(IC801 Pin 21)
						YES
								NO
										Defective IC802
						Chekc the signal of PN802
						pin 13, 14
										Open activator and/or connector
						YES

Does FE signal appear?		NO
(IC801 pin 13)					Defective IC801
	YES
		NO
Does DRF signal appear? (IC 801 pin67)					Degraded laser diode
					Defective PICK-UP

- 2-6 -

P-SENS PART

Does +5V appear at ZD703?
YES		NO		Check the waveform
				of D703(cathod).
				YES			NO			Replace the D703
Check the pattern of
IC301 Pin 26 .				Check the R768 and
				replace ZD703.

VKK PART

Does DC - 33V appear at CN302 Pin 28 .

NO

YES

Check the Voltage of IC301

pin51

Dose -33V appear at

ZD775(-)

		NO		Replace the ZD775
YES
Check the Q704
TURN ON
				Check the -33V(LOW)
				of C767
								Replace the D704,
Check the PATTERN								D705

Replace the Q701

Refer to power circuit

END

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