LG BP340 Service Manual

3-1
SECTION 3
ELECTRICAL
CONTENTS
ONE POINT REPAIR GUIDE .......................................................................................................................... 3-2
1. NO BOOTING WHEN YOU TURN THE UNIT ON ................................................................................. 3-2
ELECTRICAL TROUBLESHOOTING GUIDE ............................................................................................... 3-5
1. SMPS TROUBLESHOOTING FLOW ..................................................................................................... 3-5
2. UNIT POWER CHECK FLOW ................................................................................................................ 3-6
3. UNIT CANNOT POWER ON .................................................................................................................. 3-6
4. REMOTE CONTROL DOES NOT WORK .............................................................................................. 3-7
5. KEYS DO NOT WORK ........................................................................................................................... 3-7
6. NO HDMI OUTPUT ................................................................................................................................. 3-8
7. CANNOT READ DISC OR TRAY OPEN/CLOSE ................................................................................... 3-8
8. CANNOT READ USB DEVICE CONTENT ............................................................................................ 3-9
9. CANNOT CONNECT TO WIRELESS NETWORK ................................................................................. 3-9
WAVEFORMS ON SYSTEM TEST .............................................................................................................. 3-10
1. POWER ON SYSTEM RESET SEQUENCE ........................................................................................ 3-10
2. SYSTEM 27 MHZ CLOCK WAVEFORM .............................................................................................. 3-10
BLOCK DIAGRAM ......................................................................................................................................... 3-11
CIRCUIT DIAGRAMS .................................................................................................................................... 3-13
1. SMPS - POWER CIRCUIT DIAGRAM.................................................................................................. 3-13
2. SMPS - KEY/ LED/ USB PORT/ IR CIRCUIT DIAGRAM .................................................................... 3-15
3. MAIN - POWER SOURCE CIRCUIT DIAGRAM .................................................................................. 3-17
4. MAIN - DDR3 #1 CIRCUIT DIAGRAM ................................................................................................. 3-19
5. MAIN - DDR3 #2 CIRCUIT DIAGRAM ................................................................................................. 3-21
6. MAIN - HDMI CIRCUIT DIAGRAM ....................................................................................................... 3-23
7. MAIN - USB CIRCUIT DIAGRAM ......................................................................................................... 3-25
8. MAIN - MICOM CIRCUIT DIAGRAM .................................................................................................... 3-27
9. MAIN - FRONT END CIRCUIT DIAGRAM ........................................................................................... 3-29
10. MAIN - MOTOR DRIVE CIRCUIT DIAGRAM ....................................................................................... 3-31
CIRCUIT VOLTAGE CHART ........................................................................................................................ 3-33
1. ICs ......................................................................................................................................................... 3-33
2. TRs & FETs .......................................................................................................................................... 3-36
3. DIODES & IR ........................................................................................................................................ 3-36
4. CAPACITORS ....................................................................................................................................... 3-36
5. CONNECTORS ..................................................................................................................................... 3-37
PRINTED CIRCUIT BOARD DIAGRAMS .................................................................................................... 3-39
1. MAIN P.C.BOARD ................................................................................................................................ 3-39
2. SMPS P.C. BOARD .............................................................................................................................. 3-41

LG BP340 Specifications

General

Depth	198 mm
Width	259 mm
Height	38 mm
Weight	997 g
Full HD	No
Device type	Blu-Ray player
Product color	Black
Audio decoders	Dolby Digital, Dolby Digital Plus, Dolby TrueHD, DTS, DTS 2.0, DTS-HD Master Audio
Package weight	1270 g
Video upscaling	Yes
Disc types supported	BD, BD-R, BD-RE, CD, CD-R, CD-RW, DVD, DVD+R, DVD+RW, DVD-R, DVD-RW
Card reader integrated	-
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Audio formats supported	AAC, FLAC, LPCM, MP3, WMA
Video formats supported	3GP, AVC, AVCHD, DAT, FLV, M4V, MKV, MOV, MP4, MPEG1, MPEG2, MPEG4, TS, VC-1, VOB, WMV
Power consumption (standby)	0.5 W
Power consumption (typical)	12 W
Audio output channels	- channels