Service Manuals, User Guides, Schematic Diagrams or docs for : LG DVD DV-5921N dvd-LG-DV5921N
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CIRCUIT DIAGRAMS IMPORTANT SAFETY NOTICE
WHEN SERVICING THIS CHASSIS, UNDER NO CIR-
CUIT. SPECIAL COMPONENTS ARE SHADED ON THE NOTE :
SCHEMATIC FOR EASY IDENTIFICATION.
THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIF-
1. Shaded( ) parts are critical for safety. Replace only
with specified part number.
CUMSTANCES SHOULD THE ORIGINAL DESIGN BE
1. POWER(SMPS) CIRCUIT DIAGRAM MODIFIED OR ALTERED WITHOUT PERMISSION
FER FROM THE ACTUAL CIRCUIT USED. THIS WAY,
IMPLEMENTATION OF THE LATEST SAFETY AND
2. Voltages are DC-measured with a digital voltmeter
during Play mode.
FROM THE LG ELECTRONICS CORPORATION. ALL PERFORMANCE IMPROVEMENT CHANGES INTO
COMPONENTS SHOULD BE REPLACED ONLY WITH THE SET IS NOT DELAYED UNTIL THE NEW SERVICE
TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIR- LITERATURE IS PRINTED.
VF(+) Power Dead.
F102 is defective.
VF(-) Power Dead.
ZD101 is defective.
12V Power Dead.
IC103 is defective.
8V Power Dead.
Power Dead. IC105 is defective.
IC101 is defective. 3.3V Power Dead.
IC106 is defective.
5V Power Dead.
Q107 is defective.
'02. 12. 26 R16006A
NOTES) Warning NOTES : Symbol denotes AC ground.
NOTES) Parts that are shaded are critical
NOTES) With respect to risk of fire or
NOTES) electricial shock. Symbol denotes DC chassis ground.
3-31 3-32
2. SYSTEM CIRCUIT DIAGRAM
No Power on
Video signal not
appeared
AUDIO DAC
interface
VIDEO
interface
RF & MOTOR DRIVE
interface
System not working or
screen is abnormal
System not working or
Digitron not display
System not operate
Digitron all not display
Program download fail
System not working
Video signal Y
Video signal Color '02. 12. 26 R14600A
3-33 3-34
3. RF & SERVO CIRCUIT DIAGRAM
CD/DVD LD
will not on
'02. 12. 26 R14601A
3-35 3-36
4. TIMER, 5.1CH, SCART, KARAOKE CIRCUIT DIAGRAM
Power LED abnormal
(OPTIONAL PART)
Karaoke not operate.
Remocon not operate
System not operate
System not operate or
Digitron abnormal or Digital abnormal
Key not operate.
(OPTIONAL PART)
(OPTIONAL PART)
5.1CH Audio Bad
'02. 12. 26 R14603A
3-37 3-38
5. AV/JACK CIRCUIT DIAGRAM
All Video signal isn't
appear or bad
2CH Audio out bad.
SACD OPTION 2.5V doesn't appeat
System not working
2CH Audio out bad.
Video Signal Y Video Signal CVBS '02. 12. 26 R14602A
Video Signal Color 2CH Audio
3-39 3-40
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