LG SL4Y Service Manual

3-11
Copyright © 2019 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
USB_GND
USB5V
USB_N
C569
10pF
NC
C570
10pF
NC
USB_P
USB_P
USB_N
JK501
EAG62571101
1
5V
2
D-
3
D+
4
DGND
DGND
FL500
12
3
4
C544
100nF
DGND
USB_5V
D502
D503
3
1
2
C546
10uF
C545
220uF
R594
4.7
R595
4.7
USB
ONE POINT REPAIR GUIDE
NO SOUND
2-3. USB
2-3-1. Solution
Replace MAIN board.
2-3-2. How to troubleshoot (Countermeasure)
1) Please check USB_5V at JK501 pin1.
2) If soldering status and voltage has abnormal status, replace MAIN board.
2-3-3. Service hint (Any picture / Remark)
< MAIN board top view >
1
R408
R409
R5A0
R5A1
R5A2
R5A6R5A7
OP5
OP6
OP7
C437
C440
ZD511
ZD512
FL500
RR503
RR505 RR506 RR507 RR508 RR509
RR510
RR511
RR512 RR513 RR514 RR515 RR516 RR517
FB306
F
B
FB314
FB509
FB316
R507
R508 R509
R319
RC502
RC503
R510
RC504 RC505
R512
RC506
R514
RC509
R515
R516
R519
RC510
RC511
RC512
CN5
0
RC513
CN503
RC514
CN504
RC515
RC516
CN506
RC517
RC518 RC519
R525
R526
R529
RC522 RC523
R531
R532
R533
C304
R534
R540
R541
C505
R542
C506
R543
R544
R547
R548
C510
MCLK
C513
R550
R551
C519
R555
R560
C331
WFB501
R562
C333
R563
C334
R564 R565
C335
R566
R568 R569
R574
R575
R576
OCP
R578
R579
R580
C544
R581
C545
R582
C546
R583
R585
R586
WR503
WR505 WR506 WR507 WR508 WR509
C552
C555
C556 C557
WR510
R594
WR511
R595
WR512
R596
WR513
R597
WR514
C368
R598
WR515
R599
WR516 WR517
D502
D503
C569
C570
C381
C382
C383
IC303
IC3
0
C387
C388
IC310
C391
WC502
C392
IC313
WC503 WC504 WC505 WC506
WC509
WC510
WC511
WC512 WC513 WC514 WC515
WC516
WC517
WC518 WC519
RFB501
WC520 WC522 WC523
Rear SPK
Subwoofer
JK501
JK501
JK501

LG SL4Y Specifications

General

Color	black
Audio Channels	2.1
Subwoofer	included
Surround Sound	dolby digital
Number of Drivers	2
RMS Power	300 watts
Inputs	toslink optical, usb type a
Outputs	usb type a
HDMI Inputs	0
HDMI Outputs	0
USB Ports	1
Bluetooth	yes
Wireless Connectivity	bluetooth
Wireless Subwoofer Connectivity	yes
Optical Audio Inputs	1
Remote Control	yes

Weight and Dimensions

Depth	3.3 inches
Height	2.2 inches
Width	35 inches
Net Weight	5 pounds
Subwoofer Depth	10.3 inches
Subwoofer Height	15.4 inches
Subwoofer Width	6.7 inches
Subwoofer Weight	11.7 pounds