Sign In
Upload
Download
Table of Contents
Contents
Add to my manuals
Delete from my manuals
Share
URL of this page:
HTML Link:
Bookmark this page
Add
Manual will be automatically added to "My Manuals"
Print this page
×
Bookmark added
×
Added to my manuals
Manuals
Brands
LG Manuals
Car Receiver
LAC6700R
Service manual
LG LAC6700R Service Manual
Car cd/mp3/wma receiver
Hide thumbs
Also See for LAC6700R
:
Owner's manual
(16 pages)
,
Owner's manual
(22 pages)
,
Owner's manual
(16 pages)
1
Table Of Contents
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
page
of
39
Go
/
39
Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Section 1 Summary
Servicing Precautions
Esd Precautions
Specifications
Section 2 Electrical
Electrical Troubleshooting Guide & Waveforms
Main, Front & Tuner Part
System Control
CD Part Troubleshooting
Usb Part Troubleshooting
Waveforms
INTERNAL BLOCK DIAGRAM of Ics
Ic518, Ic701 & Ic702 (S4580)
Ic301 (Ha13173Ah)
Ic302 (Ba00Ccowfp)
IC401 (Μpd78F1164)
Ic601 (Tda7419)
Ic602 (Njm2706-Dmp24)
Ic801 (Tb2904Hq)
Ic901 (Ld3811)
Block Diagram
Circuit Diagrams
Main Circuit Diagram
Cdp 1 Circuit Diagram
Cdp 2 Circuit Diagram
Front Circuit Diagram
Usb Circuit Diagram
Lcd Lighting Circuit Diagram
Printed Circuit Diagrams
Main P.C.board
Cdp P.C.board
Front P.C.board
Usb P.C.board
Lcd Lighting P.C.board
Section 3 Exploded Views
Cabinet and Main Frame Section
Mechanism(Pick-Up) Section
Advertisement
Quick Links
Download this manual
See also:
Owner's Manual
Internal Use Only
Website http://biz.lgservice.com
CAR CD/MP3/WMA
RECEIVER
SERVICE MANUAL
MODEL : LAC6700R
CAUTION
BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS"
IN THIS MANUAL.
P/NO : AFN35097871
OCTOBER, 2007
Table of
Contents
Previous
Page
Next
Page
1
2
3
4
5
Advertisement
Table of Contents
Troubleshooting
SECTION 2 ELECTRICAL
6
CD PART TROUBLESHOOTING
9
USB PART TROUBLESHOOTING
12
Related Manuals for LG LAC6700R
Car Receiver LG LAC6700R Owner's Manual
Car cd/mp3/wma receiver (22 pages)
Car Receiver LG LAC6700RP Owner's Manual
Car cd/mp3/wma receiver (16 pages)
Car Receiver LG LAC6710R Owner's Manual
Car cd/mp3/wma receiver (16 pages)
Car Receiver LG LAC3900RN Owner's Manual
(16 pages)
Car Receiver LG LAC5900RN Manual
(16 pages)
Car Receiver LG LAC6750R Owner's Manual
Car cd/mp3/wma receiver (18 pages)
Car Receiver LG LAC7800R Owner's Manual
(20 pages)
Car Receiver LG LAC6900N Owner's Manual
(16 pages)
Car Receiver LG LAC3900N Manual
(16 pages)
Car Receiver LG LAC3910N Quick Start Manual
(16 pages)
Car Receiver LG LAC5910N Quick Start Manual
(16 pages)
Car Receiver LG LAC6750 Manual
Car cd/mp3/wma receiver (16 pages)
Car Receiver LG LAC5900IN Manual
(16 pages)
Car Receiver LG LAC6700 Manual
Car cd/mp3/wma receiver (16 pages)
Car Receiver LG LAC5910IN Quick Start Manual
(16 pages)
Car Receiver LG LAC3900RNP Manual
(16 pages)
Summary of Contents for LG LAC6700R
Page 1
Internal Use Only Website http://biz.lgservice.com CAR CD/MP3/WMA RECEIVER SERVICE MANUAL MODEL : LAC6700R CAUTION BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL. P/NO : AFN35097871 OCTOBER, 2007...
Page 2: Table Of Contents
5. LCD LIGHTING P.C.BOARD...........................2-41 SECTION 3 EXPLODED VIEWS 1. CABINET AND MAIN FRAME SECTION ........................3-1 2. MECHANISM(PICK-UP) SECTION..........................3-3 SECTION 4 REPLACEMENT PARTS LIST .............4-1 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 3: Section 1 Summary
Further check the insulation between the blades of attachment plug and accessible conductive parts. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 4: Esd Precautions
THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 5: Specifications
520 ~ 1720 or 522 ~ 1620kHz S/N Ratio 45dB Distortion 1.0% Usable Sensitivity 28dBµV • USB SECTION Version USB 1.1 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 6: Section 2 Electrical
11 Not avaliable to Remote Checked the Remote control. (External AMP) IC401(63,64) 12 No output Beep sound. Checked the Beep Control. IC401(80), BU301 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 7
: PRE-GND * Keep changed IC, We request that you send it to HQ. : PW-GND Picture 1) Power IC desc. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 8
Checked the Tuner Signal out. TU101(8,9), IC601(5,6) Checked the AF mute. TU101(19), IC401(4) Not available to RDS Checked the RDS data. TU101(20,21), IC401(65,83) Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 9: Cd Part Troubleshooting
CN510(12, 17) Checked the loading IC513(12, 14, 15) motor control? Fig 3, 4 Checked the 8/12cm PN504(1) sens switch? Fig 1, 2 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 10
Fig 7 PN504(5, 6) Checked the TRVP control? Fig 13 IC506(24) Checked the tracking control? IC513(19, 20) Fig 6 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 11
Fig 8 No ejected the CD? CN901(16) [MAIN] Checked the Eject key? Checked the loading motor D6, D5 control? Fig 3, 4 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 12: Usb Part Troubleshooting
Checked the D+/D- port? Fig 14 Checked the USB IC511(27) indication port? Checked the USB IC506 (62, 63, 64) interface IC control? Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 13
IC511(22, 23) IC510(50, 51) Checked the USB data? USB no sound? Checked the CD DSP IC520(1, 2, 3) signal out? Fig 8 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 14: Waveforms
Fig 4) Motor control signal for unloading D6:[REW] SLED CON PIN504:[PIN5] D5:[FEW] PIN504:[PIN6] SLED CON R5091:[SLED CON] R5091:[SLED CON] R5465:[LOAD IN] LOADING IN LOADING IN R5465:[LOAD IN] Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 15
Fig 9) PD, RFOUT Fig 10) CLK, REQ & DATA PD/MD IC511:[PIN52] IC506:[PD41] IC511:REQ[PIN53] RFOUT IC506:[RFOUT46] IC511:DATA[PIN54] LOADING IN DATA LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. 2-10 Only for training and service purposes...
Page 16
Fig 14) USB D+, D- signal R504:[PIN5] PN503:PIN3 [D-] PN504:[PIN6] PN503:PIN2 [D+] R5091:[SLED CON] UART RX R560:UART RX R5465:[LOAD IN] TRVP R562:UART TX UART TX Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only 2-11 Only for training and service purposes...
Page 17: Internal Block Diagram Of Ics
CDOUT CEXT 10uF ILMOUT 0.1uF CILM 0.1uF AUDIOOUT FREG B CAUDIO 10uF QFREG RFREG3 FREG F CFREG RFREG1 10uF RFREG2 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. 2-12 Only for training and service purposes...
Page 18
(pin14) output circuits are built-in overcurrent protection circuit based on the respective output current. These overcurrent protection circuits limit the current with a curve shape of “7” in the voltage-current graph. This prevents IC destruction due to overcurrent. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only 2-13...
Page 19: Ic302 (Ba00Ccowfp)
PAUX_MUTE(O) PDAC_MUTE(O) PLIGHT(O) PCDP_RST(O) PDIM_OUT(O) PCDP_MLD(O) PEJECT(I) PZERO_MUTE(I) PQUALTY(I) PISP(O) PSMETER(I) PUSB_POWER/PBT_POWER(O ) PLEVEL_METER(I) PKEY2(I) PUSB_SW(I) PKEY1(I) PUSB_RESET(O) AVss EVdd1 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. 2-14 Only for training and service purposes...
Page 20
Tuner <----> VR IC mute • D/A converter reference voltage input AVREF0 • Positive power supply for P110, P111, and D/A converter Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only 2-15 Only for training and service purposes...
Page 21
Connect to VSS via a capacitor (0.47 to 1µF) Ground EVSS0 Ground Potential for Ports Positive power supply (+5V) 100 EVDD0 Positive power supply (+5V) For Ports LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. 2-16 Only for training and service purposes...
Page 22: Ic601 (Tda7419)
DIGITAL CONTROL C BUS C BUS C BUS CREF CREF VREFOUTF VREFOUTF AC2INL/ AC2INL/ AC2INR/ AC2INR/ SE3L SE3L SE3R SE3R Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only 2-17 Only for training and service purposes...
Page 23
Spectrum analyzer output VREF Vref output MIX / OUTSW / OUTRR2 Mix input / Additional subwoofer output / 2 rear right output LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. 2-18 Only for training and service purposes...
Page 24: Ic602 (Njm2706-Dmp24)
22. LOUT 11. ealaVROUT 23. RIN 12. GND 24. LIN 6-2. BLOCK DIAGRAM Vref 3D FILTER H:eala L:BYPASS H:eala_Bass L:BYPASS Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only 2-19 Only for training and service purposes...
Page 25: Ic801 (Tb2904Hq)
OUT3 ( ) OUT4 ( ) PW-GND4 OUT4 ( ) PRE-GND OFF-SET STBY MUTE PLAY MUTE : PRE-GND : PW-GND LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. 2-20 Only for training and service purposes...
Page 26: Ic901 (Ld3811)
VLCD2 DCRAM ADDRESS INSTRUCTION 48X240 COUNTER VLCD3 VLCD3 REGISTER bits ADDRESS REGISTER TIMING GENERATOR SHIFT REGISTER CLOCK CCB INTERFACE GENERATOR Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only 2-21 Only for training and service purposes...
Page 27
LCD driver block power supply connection. Provide a VLCD voltage of between 4.5 and 10.0 V. Power supply connection. Connect to ground. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. 2-22 Only for training and service purposes...
Page 28: Block Diagram
BLOCK DIAGRAM Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only 2-23 2-24 Only for training and service purposes...
Page 29: Circuit Diagrams
CIRCUIT DIAGRAMS 1. MAIN CIRCUIT DIAGRAM LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. 2-25 2-26 Only for training and service purposes...
Page 30: Cdp 1 Circuit Diagram
2. CDP 1 CIRCUIT DIAGRAM Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only 2-27 2-28 Only for training and service purposes...
Page 31: Cdp 2 Circuit Diagram
3. CDP 2 CIRCUIT DIAGRAM LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. 2-29 2-30 Only for training and service purposes...
Page 32: Front Circuit Diagram
4. FRONT CIRCUIT DIAGRAM Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only 2-31 2-32 Only for training and service purposes...
Page 33: Usb Circuit Diagram
5. USB CIRCUIT DIAGRAM 6. LCD LIGHTING CIRCUIT DIAGRAM LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. 2-33 2-34 Only for training and service purposes...
Page 34: Printed Circuit Diagrams
PRINTED CIRCUIT BOARD DIAGRAMS 1. MAIN P.C.BOARD (TOP VIEW) Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only 2-35 2-36 Only for training and service purposes...
Page 35
MAIN P.C.BOARD (BOTTOM VIEW) LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. 2-37 2-38 Only for training and service purposes...
Page 36: Cdp P.c.board
2. CDP P.C.BOARD 3. FRONT P.C.BOARD (TOP VIEW) (BOTTOM VIEW) Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only 2-39 2-40 Only for training and service purposes...
Page 37: Usb P.c.board
4. USB P.C.BOARD (TOP VIEW) (BOTTOM VIEW) 5. LCD LIGHTING P.C.BOARD LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. 2-41 2-42 Only for training and service purposes...
Page 38: Section 3 Exploded Views
SECTION 3 EXPLODED VIEWS 1. CABINET AND MAIN FRAME SECTION *Accessory Loc.No. Loc.No. Loc.No. Loc.No. Loc.No. Loc.No. FRONT LCD901 CABLE1 MAIN Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 39: Mechanism(Pick-Up) Section
2. MECHANISM(PICK-UP) SECTION LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Table of Contents
Print
Rename the bookmark
Delete bookmark?
Delete from my manuals?
Login
Sign In
OR
Sign in with Facebook
Sign in with Google
Upload manual
Upload from disk
Upload from URL