Goldstar FFH-DV55AX Service Manual TROU

- 3-1 -

SECTION 3. DVD PART

ELECTRICAL TROUBLESHOOTING GUIDE

1. µ-COM Circuit

A. Open/Close abnormal

B. Video abnoraml

Check the

connection of P5101.

Check IC501 Pins 13, 14.

YES

NO

NO

YES

YES

(If OK)

YES

Check Front.

Reconnect it.

Refer to SERVO part.

Check the connection of MD.

OPEN/CLOSE ABNORMAL

Check Audio jack.

YES (If OK)

YES (If OK)

YES (If OK)

YES (If OK)

Check PLLFC of MPEG part.

Refer to Audio part.

Refer to MPEG part.

Replace B/D.

AUDIO ABNORMAL

- 3-2 -

C. Picture abnoraml

C. Disc Error

Check the disc.

If OK

YES (If OK)

YES (If OK)

Refer to Servo part

Check PLLIC of MPEG part

Check DSP

Check MPEG

YES (If OK)

Replace B/D

PICTURE ABNORMAL

Check Disc

YES (If OK)

YES (If OK)

Refer to Servo part

Replace B/D

DISC ERROR

- 3-3 -

2. MPEG Circuit

Power is on

Does LG Logo appear

on the screen?

Does the

moving picture of the DVD Disc

play on the screen

normally?

Is MPEG data signal normal?

Is error signal normal?

Is MPEG data signal normal?

Is Clock normal?

Does the audio

sound output from MPEG

decoder?

Does the

moving picture of the video

CD play on the screen

normally?

Does the audio sound

output normally?

END

Check power & clock.

Check CD/DVD DSPoutput

signal.

Check MPEG Decoder input

signal.

Check CD/DVD DSPoutput

signal.

Check MPEG Decoder input

signal.

Check CD/DVD DSPoutput

signal.

Check MPEG Decoder input

signal.

Check clock signal

Check clock signal

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

NO

NO

NO

OK

OK

OK

OK

NO

NO

NO

NO

NO

*OPTION

_ If included VCD function.