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LG Electronics 3450-ZC, 42LS340S, 42LS340T, 42LS3450-ZC DVB-S2 LNB Part Allegro

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THERMAL

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES

SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.

FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS

ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR

THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

2011/11/02

DVB_S 27

GP4L_S7LR2

R2704

4.7K

LNB

A_GND

+3.3V_Normal

DCDC_GND

C2700

0.22uF

25V

LNB

A_GND

C2711

10uF

25V

LNB

L2700

33UH

SP-7850_33

LNB

LNB_TX

+12V_LNB

C2702

0.1uF

LNB

C2709 27pF

OPT

R270133

LNB

LNB_OUT

C2707

68uF

35V

LNB

L2701

BLM18PG121SN1D

LNB

DEMOD_SCL R270233

LNB

DCDC_GND

A_GND

A_GND

C2706

22000pF

LNB

+12V/+15V

C2703

0.1uF

50V

LNB

A_GND

DCDC_GND

DCDC_GND

+12V_LNB

A_GND

DEMOD_SDA

IC2700

A8290SETTR-T

LNB

1

BOOST

3

TCAP

7

TDI

9

VREG

10

SDA

11

ADD

12

SCL

13

NC_2

14

IRQ

15 NC_3

16 NC_4

17 NC_5

18 NC_6

19 BFC

20 NC_7

21 NC_8

22 BFO

23 NC_9

24 BFI

25 VIN

26 LX

27 GNDLX

28 LNB

5

TDO

8

GND

6

EXTM

4

NC_1

2

VCP 29

[EP]

C2708 0.22uF

LNB

C2701

0.01uF

50V

LNB

C2710 27pF

OPT

A_GND

C2705

68uF

35V

LNB

A_GND

R2706

0

R2705

0

D2700

40V

SX34

LNB

D2702

40V

SX34

LNB

C2712

0.1uF

50V

LNB

A_GND

ZD1

40V

LNB

D2703

30V

MBR230LSFT1G

LNB

C2713

1uF

50V

LNB

A_GND

DVB-S2 LNB Part Allegro

DCDC_GND and A_GND are connected

(Option:LNB)

2.4A

Input trace widths should be sized to conduct at least 3A

DCDC_GND and A_GND are connected in pin#27

close to Boost pin(#1)

2A

Ouput trace widths should be sized to conduct at least 2A

Max 1.3A

PCB_GND and A_GND are connected

3A

close to VIN pin(#25)

Copyright © 2012 LG Electronics. Inc. All rights reserved.

Only for training and service purposes

LGE Internal Use Only

Contents

Main Page SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE General Guidance Before returning the receiver to the customer, Leakage Current Cold Check(Antenna Cold Check) SERVICING PRECAUTIONS Page SPECIFICATION 1. Application range 2. Requirement for Test 3. Test method 4. Model General Specification Page 5. Video resolutions (2D) 5.1. Component Input (Y, CB/PB, CR/PR) 5.2. RGB Input (PC) - LS35/LS34/CS46 series models are not supported. 5.3. HDMI Input(PC/DTV) ADJUSTMENT INSTRUCTION 1. Application Range 2. Designation 3. Main PCB check process * Boot file Download 3.1. ADC Process 3.2. EDID Download 3.3. EDID data 3.4 Function Check 4. Total Assembly line process 4.1. Adjustment Preparation * Auto-control interface and directions * Manual W/B process using adjust Remote control. 4.2. EYE-Q function check 5. HI-POT Test 5.1. HI-POT auto-check preparation 5.2. HI-POT auto-check 5.3. Checkpoint 6. Model name & Serial number D/L 7. MAC Address & CI+ key download GP4_LOW 7.1 MAC Address 7.1.1 Equipment & Condition 7.1.2 Download method 7.2 LAN Inspection 7.3. LAN PORT INSPECTION(PING TEST) SET PC Except of LS3500/CS460 BLOCK DIAGRAM Applied Model : **LM5800, **LS5600, **LS3500, **CS460, **LS3400 Applied Model : **LM580T, **560T, **LS350T, **CS460T, **LS340T TDSN TDSN- G301D G301D Except of LS350T/CS460T Applied Model : **LM580S, **560S, **LS350S, **CS460S, **LS340T TDSQ TDSQ- G001D G001D Except of LS350S/CS460S EXPLODED VIEW FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS POWER_LARGE 2012/01/13 4 IC407 AP7173-SPG-13 HF(DIODES) FROM LIPS & POWER B/D Power_DET S7LR core 1.2V volt +1.5V_DDR ERROR_OUT is used for lamp(CCFL/EEFL) models. In other words, LED models need not use. LVDS for large inch [51Pin LVDS Connector] (For FHD 60Hz) FOR FHD REVERSE(8bit) MIRROR Pol-change Shift FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS K4B1G1646G-BCH9 H5TQ1G63DFR-H9C NT5CB64M16DP-CF H5TQ1G63DFR-H9C Serial Flash for SPI boot FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS CI TS INPUT CI POWER ENABLE CONTROL CI HOST I/F * Option name of this page : CI_SLOT CI Region (because of Hong Kong) CLOSE TO MSTAR CI DETECT GP4L_S7LR2 ETHERNET ETHERNET * H/W option : ETHERNET FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 2011/08/17 23 IR/LED and control for on.y 12 sub without IR-OUT. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 2011/12/23 TUNER_EU 26 +2.5V_TU Vo=0.8*(1+R2/R1) GP4R_GLOBAL_TUNER_BLOCK close to TUNER ERROR & VALID PIN Close to TUNER close to TUNER DVB-S2 LNB Part Allegro PCB_GND and A_GND are connected DCDC_GND and A_GND are connected in pin#27 Input trace widths should be sized to conduct at least 3A DCDC_GND and A_GND are connected AUDIO AMP(STA380BWE) FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS AR101 22 LOCAL DIMMING *Option : HDCP_EEPROM HDCP EEPROM EEPROM FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 2011.08.24 POWER,IN/OUT,H/W OPT 51 MODEL_OPT_2 MODEL_OPT_3 USB (SIDE) USB1_DIODES FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS HDMI_2EA(NON SIDE HDMI) 2011/08/12 53 HDMI_2EA(NON SIDE HDMI) HDMI_2 HDMI_1 For CEC FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS Full Scart COMPONENT SCART AUDIO OUT RS-232C 4PIN MSTART DEBUG_4PIN Page Contents of LCD TV Standard Repair Process First of all, Check whether there is SVC Bulletin in GCSC System for these model. Contents of LCD TV Standard Repair Process Detail Technical Manual Continue to the next page date Revised date 1/14 symptom A. Video error No video/ Normal audio First of all, Check whether all of cables between board is inserted properly or not. (Main B/DPower B/D, LVDS Cable,Speaker Cable,IR B/D Cable,,,) A4 A5 A6 A5 A6 Color error A7 A8/ A9 A10 date Revised date 5/14 symptom 2012. 01 .14 Vertical/Horizontal bar, residual image, light spot Vertical / Horizontal bar, residual image, light spot, external device color error A10 External device screen error-Color error device and cable B. Power error Off when on, off while viewing, power auto on/off A13 A14 date Revised date 8/14 C. Audio error A15 A16 abnormal audio/discontinuation/noise is same after Check input signal compared to No audio C. Audio error A16 Wrecked audio/ discontinuation/noise date Revised date 10/14 D. Function error 1. Remote control(R/C) operating error A4 D. Function error E. Noise F. Exterior defect