Page 1
PORTABLE DVD
SERVICE MANUAL
MODEL: DP351G
CAUTION
BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”
IN THIS MANUAL.
MODEL: DP351G
SERVICE MANUAL
P/NO : AFN56903641
Website http://biz.lgservice.com
APRIL, 2008
Av. Sor Juana lnés de la Cruz No 555
Col. San Lorenzo
Tlalnepantla, Estado de México CP 54033
Tel. 321 19 00 Fax. 5 657549
Lada sin costo 01 800 50 481 00
Internal Use Only
Page 2
CONTENTS
SECTION 1.........SUMMARY
SECTION 2.........EXPLODED VIEWS
SECTION 3.........ELECTRICAL
SECTION 4.........REPLACEMENT PARTS LIST
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Page 3
SECTION 1
SUMMARY
CONTENTS
PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS .............................1-3
SERVICING PRECAUTIONS....................................................................................................................1-4
• GENERAL SERVICING PRECAUTIONS
• INSULATION CHECKING PRODEDURE
• ELECTROSTATICALLY SENSITIVE (ES) DEVICES
SPECIFICATIONS ........................................................................................................................................1-5
LGE Internal Use Only
1-2
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Page 4
PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS
IMPORTANT SAFETY NOTICE
This manual was prepared for use only by properly trained audio-video service
technicians.
When servicing this product, under no circumstances should the original design be
modified or altered without permission from LG Corporation. All components should be
replaced only with types identical to those in the original circuit and their physical
location, wiring and lead dress must conform to original layout upon completion of
repairs.
Special components are also used to prevent x-radiation, shock and fire hazard.
These components are indicated by the letter “x” included in their component
designators and are required to maintain safe performance. No deviations are allowed
without prior approval by LG Corporation.
Circuit diagrams may occasionally differ from the actual circuit used. This way,
implementation of the latest safety and performance improvement changes into the set
are not delayed until the new service literature is printed.
CAUTION
customized installations without manufacturer’s approval. Unauthorized modifications
will not only void the warranty, but may lead to property damage or user injury.
Service work should be performed only after you are thoroughly familiar with these
safety checks and servicing guidelines.
: Do not attempt to modify this product in any way. Never perform
GRAPHIC SYMBOLS
The exclamation point within an equilateral triangle is intended to alert
the service personnel to important safety information in the service
literature.
The lightning flash with arrowhead symbol within an equilateral triangle
is intended to alert the service personnel to the presence of noninsulated
“dangerous voltage” that may be of sufficient magnitude to constitute a
risk of electric shock.
The pictorial representation of a fuse and its rating within an equilateral
triangle is intended to convey to the service personnel the following fuse
replacement caution notice:
CAUTION: FOR CONTINUED PROTECTION AGAINST RISK OF
FIRE, REPLACE ALL FUSES WITH THE SAME TYPE AND RATING
AS MARKED NEAR EACH FUSE.
SERVICE INFORMATION
While servicing, use an isolation transformer for protection from AC line shock. After the
original service problem has been corrected, make a check of the following:
FIRE AND SHOCK HAZARD
1. Be sure that all components are positioned to avoid a possibility of adjacent
component shorts. This is especially important on items trans-ported to and from the
repair shop.
2. Verify that all protective devices such as insulators, barriers, covers, shields, strain
reliefs, power supply cords, and other hardware have been reinstalled per the
original design. Be sure that the safety purpose of the polarized line plug has not
been defeated.
3. Soldering must be inspected to discover possible cold solder joints, solder splashes,
or sharp solder points. Be certain to remove all loose foreign particles.
4. Check for physical evidence of damage or deterioration to parts and components,
for frayed leads or damaged insulation (including the AC cord), and replace if
necessary.
5. No lead or component should touch a high current device or a resistor rated at 1 watt
or more. Lead tension around protruding metal surfaces must be avoided.
6. After reassembly of the set, always perform an AC leakage test on all exposed
metallic parts of the cabinet (the channel selector knobs, antenna terminals, handle
and screws) to be sure that set is safe to operate without danger of electrical shock.
DO NOT USE ALINE ISOLATION TRANSFORMER DURING THIS TEST. Use an
AC voltmeter having 5000 ohms per volt or more sensitivity in the following manner:
Connect a 1500 ohm, 10 watt resistor, paralleled by a .15 mfd 150V AC type
capacitor between a known good earth ground water pipe, conduit, etc.) and the
exposed metallic parts, one at a time. Measure the AC voltage across the
combination of 1500 ohm resistor and .15 mfd capacitor. Reverse the AC plug by
using a non-polarized adaptor and repeat AC voltage measurements for each
exposed metallic part. Voltage measured must not exceed 0.75 volts RMS. This
corresponds to 0.5 milliamp AC. Any value exceeding this limit constitutes a potential
shock hazard and must be corrected immediately.
TIPS ON PROPER INSTALLATION
1. Never install any receiver in a closed-in recess, cubbyhole, or closely fitting shelf
space over, or close to, a heat duct, or in the path of heated air flow.
2. Avoid conditions of high humidity such as: outdoor patio installations where dew is a
factor, near steam radiators where steam leakage is a factor, etc.
3. Avoid placement where draperies may obstruct venting. The customer should also
avoid the use of decorative scarves or other coverings that might obstruct ventilation.
4. Wall- and shelf-mounted installations using a commercial mounting kit must follow
the factory-approved mounting instructions. A product mounted to a shelf or platform
must retain its original feet (or the equivalent thickness in spacers) to provide
adequate air flow across the bottom. Bolts or screws used for fasteners must not
touch any parts or wiring. Perform leakage tests on customized installations.
5. Caution customers against mounting a product on a sloping shelf or in a tilted
position, unless the receiver is properly secured.
6. A product on a roll-about cart should be stable in its mounting to the cart.
Caution the customer on the hazards of trying to roll a cart with small casters across
thresholds or deep pile carpets.
7. Caution customers against using extension cords. Explain that a forest of
extensions, sprouting from a single outlet, can lead to disastrous consequences to
home and family.
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
1-3
LGE Internal Use Only
Page 5
SERVICING PRECAUTIONS
CAUTION: Before servicing the PORTABLE DVD covered by
this service data and its supplements and addends, read and
follow the SAFETY PRECAUTIONS. NOTE: if unforeseen
circumstances create conflict between the following servicing
precautions and any of the safety precautions in this
publication, always follow the safety precautions.
Remember Safety First :
General Servicing Precautions
1. Always unplug the PORTABLE DVD AC power cord from
the AC power source before:
(1) Removing or reinstalling any component, circuit board,
module, or any other assembly.
(2) Disconnecting or reconnecting any internal electrical
plug or other electrical connection.
(3) Connecting a test substitute in parallel with an
electrolytic capacitor.
Caution: A wrong part substitution or incorrect polarity
installation of electrolytic capacitors may result in an
explosion hazard.
2. Do not spray chemicals on or near this PORTABLE DVD or
any of its assemblies.
3. Unless specified otherwise in this service data, clean
electrical contacts by applying an appropriate contact
cleaning solution to the contacts with a pipe cleaner, cottontipped swab, or comparable soft applicator.
Unless specified otherwise in this service data, lubrication of
contacts is not required.
4. Do not defeat any plug/socket B+ voltage interlocks with
which instruments covered by this service manual might be
equipped.
5. Do not apply AC power to this PORTABLE DVD and / or any
of its electrical assemblies unless all solid state device heat
sinks are correctly installed.
6. Always connect the test instrument ground lead to an
appropriate ground before connecting the test instrument
positive lead. Always remove the test instrument ground
lead last.
Insulation Checking Procedure
Disconnect the attachment plug from the AC outlet and turn
the power on. Connect an insulation resistance meter (500V)
to the blades of the attachment plug. The insulation resistance
between each blade of the attachment plug and accessible
conductive parts (Note 1) should be more than 1Mohm.
Note 1: Accessible Conductive Parts include Metal panels,
Input terminals, Earphone jacks,etc.
Electrostatically Sensitive (ES) Devices
Some semiconductor (solid state) devices can be damaged
easily by static electricity. Such components commonly are
called Electrostatically Sensitive (ES) Devices. Examples of
typical ES devices are integrated circuits and some field effect
transistors and semiconductor chip components.
The following techniques should be used to help reduce the
incidence of component damage caused by static electricity.
1. Immediately before handling any semiconductor component
or semiconductor-equipped assembly, drain off any
electrostatic charge on your body by touching a known earth
ground. Alternatively, obtain and wear a commercially
available discharging wrist strap device, which should be
removed for potential shock reasons prior to applying power
to the unit under test.
2. After removing an electrical assembly equipped with ES
devices, place the assembly on a conductive surface such
as aluminum foil, to prevent electrostatic charge buildup or
exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder
ES devices.
4. Use only an anti-static solder removal device. Some solder
removal devices not classified as “anti-static” can generate
electrical charges sufficient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate
an electrical charge sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective
package until immediately before you are ready to install it.
(Most replacement ES devices are packaged with leads
electrically shorted together by conductive foam, aluminum
foil, or comparable conductive material).
7. Immediately before removing the protective material from
the leads of a replacement ES device, touch the protective
material to the chassis or circuit assembly into which the
device will be installed.
Caution: Be sure no power is applied to the chassis or
circuit, and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged
replacement ES devices. (Normally harmless motion such
as the brushing together of your clothes fabric or the lifting
of your foot from a carpeted floor can generate static
electricity sufficient to damage an ES device.)
LGE Internal Use Only
1-4
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Page 6
SPECIFICATIONS
• GENERAL
Power requirements DC 12V
Power consumption 12W
External Dimensions 202 x 39 x 164mm (W x H x D)
Net Weight (Approx.) 0.85kg
Operating temperature: 5ºC to 40ºC
Operating humidity 5% to 90%
Laser Semiconductor laser
Signal system NTSC
• CONNECTORS
Audio/Video Output ø3.5mm mini jack x 1
- Video: 1.0V(p-p), 75Ω, sync negative
- Audio: 1.5Vrms (1kHz, 0dB)
Earphone terminal ø3.5mm stereo mini jack x 1
• LIQUID CRYSTAL DISPLAY
Panel size 7 inches wide (diagonal)
Projection system R.G.B. stripe
Driving system TFT active matrix
Resolution 480 x 234 (WQVGA)
• SUPPLIED ACCESSORIES
- RCA Video/Audio cable
- AC Adapter (MPA-630)
- Automotive Adapter (DPDC1)
- Remote Control
- Battery for Remote Control (Lithium Battery)
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
1-5
LGE Internal Use Only
Page 7
MEMO
LGE Internal Use Only
1-6
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Page 8
SECTION 2
EXPLODED VIEWS
CONTENTS
EXPLODED VIEWS .....................................................................................................................................2-2
1. CABINET AND MAIN FRAME SECTION ..................................................................................................2-2
2. PACKING ACCESSORY SECTION...........................................................................................................2-3
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2-1
LGE Internal Use Only
Page 9
EXPLODED VIEWS
1. CABINET AND MAIN FRAME SECTION
A00
A53
L
CABLE3
295
263
296
262
297
262
A46
MAIN
K
J
L
C
B
09
J
K
8
2
CABLE
I
H
278
C
E
B
A
A
A44
289
A45
281
282
285
288
KEY
283
D
D
293
287
285
64
2
88
A43
A48
G
G
LCD PANEL
F
F
A40
2
H
LCD
253
A51
77
2
286
277
I
51A
2
E
251
CABLE1
A52
72
2
LGE Internal Use Only
2-2
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Page 10
2. PACKING ACCESSORY SECTION
834
CABLE, CIGAR JACK
806
PLUG ASS'Y(RCA CABLE)
833
ADAPTER
900
REMOTE CONTROL
808
801
OWNER'S MANUAL
804
PACKING SHEET
803
BATTERY
PACKING
802A
802
BOX
BOX
802B
BOX
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2-3
LGE Internal Use Only
Page 11
MEMO
LGE Internal Use Only
2-4
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Page 12
SECTION 3
ELECTRICAL
CONTENTS
LCD PART ...................................................................................................................................................3-2
LCD ELECTRICAL TROUBLESHOOTING GUIDE .........................................................................3-2
BLOCK DIAGRAM......................................................................................................................................3-3
CIRCUIT DIAGRAM ...................................................................................................................................3-5
PRINTED CIRCUIT BOARD DIAGRAM..............................................................................................3-7
MAIN PART ...............................................................................................................................................3-11
MAIN ELECTRICAL TROUBLESHOOTING GUIDE .....................................................................3-11
1. DC-DC CONVERTER CIRCUIT...........................................................................................................3-11
2. MPEG CIRCUIT ...................................................................................................................................3-14
3. RF/SERVO CIRCUIT............................................................................................................................3-15
4. CHARGING CIRCUIT ..........................................................................................................................3-18
DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING.................................3-19
1. SYSTEM 27MHz CLOCK, RESET & FLASH R/W SIGNAL ................................................................3-19
2. SDRAM CLOCK ...................................................................................................................................3-19
3. DISC TYPE JUDGEMENT WAVEFORM .............................................................................................3-20
4. FOCUS ON WAVEFORM.....................................................................................................................3-22
5. SPINDLE CONTROL WAVEFORM (NO DISC CONDITION)..............................................................3-22
6. TRACKING CONTROL RELATED SIGNAL (SYSTEM CHECKING) ..................................................3-23
7. MT1389 AUDIO OPTICAL AND COAXIAL OUTPUT (ASPDIF) ..........................................................3-24
8. MT1389 VIDEO OUTPUT WAVEFORM ..............................................................................................3-24
9. AUDIO OUTPUT FROM AUDIO DAC ..................................................................................................3-25
WIRING CONNECTION DIAGRAMS..................................................................................................3-26
1. WIRING CONNECTION DIAGRAMS-1 ...............................................................................................3-26
2. WIRING CONNECTION DIAGRAMS-2 ...............................................................................................3-27
BLOCK DIAGRAMS.................................................................................................................................3-29
1. OVERALL BLOCK DIAGRAM..............................................................................................................3-29
2. POWER BLOCK DIAGRAM.................................................................................................................3-31
3. SERVO BLOCK DIAGRAM..................................................................................................................3-33
4. SYSTEM BLOCK DIAGRAM................................................................................................................3-35
5. AV BLOCK DIAGRAM ..........................................................................................................................3-37
CIRCUIT DIAGRAMS ..............................................................................................................................3-39
1. MPEG CIRCUIT DIAGRAM .................................................................................................................3-39
2. MEMORY CIRCUIT DIAGRAM............................................................................................................3-41
3. OPU & MOTOR CIRCUIT DIAGRAM ..................................................................................................3-43
4. AV CIRCUIT DIAGRAM........................................................................................................................3-45
5. CHARGE CIRCUIT DIAGRAM.............................................................................................................3-47
6. LCD I/F CIRCUIT DIAGRAM................................................................................................................3-49
7. KEY MENU CIRCUIT DIAGRAM .........................................................................................................3-51
• CIRCUIT VOLTAGE CHART ..............................................................................................................3-53
PRINTED CIRCUIT BOARD DIAGRAMS .........................................................................................3-57
1. MAIN P.C.BOARD ................................................................................................................................3-57
2. KEY MENU P.C.BOARD ......................................................................................................................3-61
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3-1
LGE Internal Use Only
Page 13
LCD PART
LCD ELECTRICAL TROUBLESHOOTING GUIDE
Appear shadow form
Display condition?
YES
interference in black background
NO
Inverter abnormal
Fuse normal? Fuse Replace
YES
+7.5V, 15V, -10V
YES
+5V normal?
YES
R G B signal output?
YES
VCOM signal?
(Vip 4.5)
YES
LCD MODE
CONT signal? All “LOW” (Normal
condition?)
YES
TFT LCD
pressure voltage? +3.3V, +5V,
+15V, -10V
YES
NO
NO
NO
NO
NO
NO
NO
D906, D901, D902
IC(U902) Check and Replace
Check and Replace
MPEG1389LP (Pin107, 108, 109)
IC(U901) Check and Replace
MAIN B/D Check
Power source and
L9020R, L901, D901, D902 check
TFT LCD normal?
adjusting normal?
Each connector?
LGE Internal Use Only
Color
END
YES
YES
YES
NO
NO
NO
NO
3-2
Replace
Readjust as adjustement standard
Replace and Reassemble
Replace
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Page 14
BLOCK DIAGRAM
Connector
(Main interface)
•STVR
•STVL
•CKV
•UND
•OEV
•VCOMO
•OEH
•STHL
•CPH1
•89P_R
•89P_G
•89P_B
•SP L-
•SP L+
•SP R-
•SP R+
•3.3V
•5VA
•VIN_6-12V
•PWRCTL_LCD
•IR
•KEY-PLAY
•DVD_KEY1
•DVD_KEY2
•DVD_KEY3
•DVD_KEY4
•DVD_KEY5
VCOM BLOCK
•VCOM
•UTC3308 IC
R/G/B Circuit
BLOCK
•ROUT
•GOUT
•BOUT
KEYPAD BLOCK
IR
KEY-PLAY
DVD_KEY1
DVD_KEY2
DVD_KEY3
DVD_KEY4
DVD_KEY5
LCD POWER BLOCK
•VGH (+15V)
•VGL (-10V)
•7.5V
•5V
•RCR2561 IC
INVERTER POWER BLOCK
•VIN_6-12V
•PWRCTL_LCD
•MP2359 IC
LCD PANEL
•VGH
•VGL
•STVR
•STVL
•CKV
•UND
•OEV
•VCOMO
•LNR
•MOD
•OEH
•STHL
•STHR
•CPH3
•CPH2
•CPH1
•89P_R
•89P_G
•89P_B
SPEAK
•SP L-
•SP L+
•SP R-
•SP R+
BACKLIGHT
KEY
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3-3 3-4
LGE Internal Use Only
Page 15
CIRCUIT DIAGRAM
Friday, November 30, 2007Friday, November 30, 2007Friday, November 30, 2007
ROUT
BOUT
ROUT
BOUT
GOUT
STHR
OEH
STHL
OEV
UND
CKV
STVL
STVR
CPH1
LNR
+15V
+7.5V
IR
89L_B
5VA
DVD_KEY4
R_IN
89L_G
DVD_KEY1
KEY_PLAY
B_IN
IR
DVD_KEY2
G_IN
89L_R
-10V
GND
BIAS
89L_G
89L_B
GND
CPH1
STVL
STHL
LCD_3.3V
89L_R
OEV
VCOMO
5VA
GND
LCD_3.3V
CKV
OEH
SP_RSP_R+
DVD_KEY5
SP_L-
DVD_KEY3
SP_L+
5VD
5VD
7VD5
VCOMO
+7.5V
-10V
VCOM
VCOM
LCD_3.3V
R_IN
G_IN
GOUT
B_IN
KEY_PLAY
DVD_KEY1
DVD_KEY3
DVD_KEY5
DVD_KEY4
5VD
UND
5VD
LNR
DVD_KEY2
PWRCTL_LCD
SP_L-
SP_R+
SP_R-
SP_L+
VIN_6-12V
PWRCTL_LCD
GND
VIN_6-12V
GND
GND
5VD
LCD_3.3V
BIAS
BIAS
7VD5
7VD5
BIAS7VD5
Vdc
Vdc
Vdc
GND
CPH3
STHR
STHL
CKV
U/D
CPH1
VCOM
VCOM
OEV
VGL
VR
GND
VCC
VCC
L/R
VGH
VG
STVR
MOD
VB
AVSS
AVDD
CPH2
OEH
STVL
1.Ref
2.Anode
3.Cathode
123
89P VCOM DAC OUTPUT
Spec Sheet No.
DC TO DC
RCR2561
10
4
16
14
19
11
6
20
15
13
12
17
2
23
5
3
22
18
9
8
7
24
1
21
25
26
CPT CLAA070WA03
InnoLux AT070TN04
AUO A070FW03
Elite Star LR070WA01B
PVI PW070XU3
LED DRIVER
4 11.26
0603 to 0805(11.26)
0603 to 0805(11.26)
UTC3308
K905PLAYK905PLAY
1 2
D903
BAT54S
D903
BAT54S
3
2
1
C936ESD(15pF) C936ESD(15pF)
CN904
3.5-2P
CN904
3.5-2P
1
1
2
2
3
3
4
4
C953
104
C953
104
R935
4.7K
R935
4.7K
IR G VCC
IR901
HRM538CB5100 DIP
IR G VCC
IR901
HRM538CB5100 DIP
123
CN902
CON20_0.8MM
CN902
CON20_0.8MM
10
9
8
7
6
5
4
3
2
1
11
13
12
15
14
16
20
19
18
17
21
22
R919
160
R919
160
C940ESD(15pF) C940ESD(15pF)
K902NEXTK902NEXT
1 2
C938ESD(15pF) C938ESD(15pF)
C950 105C950 105
C954
10uF/16VC954 10uF/16V
R943
100/75
R943
100/75
C907
4.7u/25uFC907 4.7u/25uF
R927
47K
R927
47K
D901
D_15V
D901
D_15V
1 2
B
C
E
Q903
SMBT3904
B
C
E
Q903
SMBT3904
1
3 2
TP913TP913
C946
10uF/16VC946 10uF/16V
C961
104
C961
104
R928
160
R928
160
C924
105
C924
105
C919
22uF/16V
C919
22uF/16V
R952
6.8 1%
R952
6.8 1%
R911
0R911 0
R930
0R
R930
0R
R953
NC
R953
NC
C960
2.2uF/16V X5R
C960
2.2uF/16V X5R
C956
100pF
C956
100pF
R904
30K
R904
30K
R903
10K
R903
10K
D902
D_10V
D902
D_10V
1 2
R945
100K
R945
100K
D905
BAT54S
D905
BAT54S
3
2
1
R936
100
R936
100
R933
0R
R933
0R
C928
100pF
C928
100pFC927
104
C927
104
R950
5.6K
R950
5.6K
R926
430/270
R926
430/270
R944
10K
R944
10K
C947
100pF
C947
100pF
U901
NJM3414AM
U901
NJM3414AM
A OUT
1
A- IN
2
A+ IN
3
GND
4
B+ IN
5
B- IN
6
B OUT
7
V+
8
K901PLAUSEK901PLAUSE
1 2
TP912TP912
R939
47K
R939
47K
R946
10K
R946
10K
R913
NCR913 NC
R910
0R910 0
D906
1N5819
D906
1N5819
1 2
C930
22uF/10V
C930
22uF/10V
U904
MP2359DT
U904
MP2359DT
IN
5
EN
4
GND
2
BST
1
FB
3
SW
6
C934
100pF
C934
100pF
C923
104
C923
104
R905
10K
R905
10K
C913
104
C913
104
L902
0RL9020R
TP921TP921
C943
100pF
C943
100pF
TP918TP918
D908
D_13V
D908
D_13V
1 2
C959
334
C959
334
C951
10uF/16V
C951
10uF/16V
TP920TP920
R923
100/75
R923
100/75
C949
100pF
C949
100pF
D907
SS14
D907
SS14
1 2
C906 4.7u/25uFC906 4.7u/25uF
TP919TP919
R902
2KR902 2K
C941
104
C941
104
C917
105
C917
105
R912
NCR912 NC
C952
20pF
C952
20pF
U903
MP1540
U903
MP1540
IN
5SW1
EN
4
GND
2
FB
3
TP916TP916
C915
104
C915
104
L908
LSS57S30-330(33uH)L908LSS57S30-330(33uH)
L906
1.8uH
L906
1.8uH
C911
104
C911
104
R914
10K
R914
10K
R937
39k
R937
39k
TP909TP909
C921
22uF/16V
C921
22uF/16V
C935ESD(15pF) C935ESD(15pF)
C933
(NC)104
C933
(NC)104
C903
104
C903
104
D904
BAT54S
D904
BAT54S
3
2
1
C904 10uF/16VC904 10uF/16V
C937ESD(15pF) C937ESD(15pF)
C909 105C909 105
B
C
E
Q902
SMBT3904
B
C
E
Q902
SMBT3904
1
3 2
C925 105C925 105
C942
10uF/16V
C942
10uF/16V
TP914TP914
R915
39k
R915
39k
R942
10K
R942
10K
R916
430/270
R916
430/270
L903
6.8uHL903 6.8uH
R909
330
R909
330
R951
68K
R951
68K
R918
20K
R918
20K
C908
4.7uF/25V
C908
4.7uF/25V
R934
NC
R934
NC
L901
4.7uHL901 4.7uH
R917
47K
R917
47K
R908
TBD/10K
R908
TBD/10K
CN905
CON12_0.8MM
CN905
CON12_0.8MM
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
R925
39K
R925
39K
R932
100/75
R932
100/75
C916
104
C916
104
C955
103
C955
103
R901
6.8K
R901
6.8K
R940
160
R940
160
C926
104
C926
104
C902
10uF/16V
C902
10uF/16V
R931
10K
R931
10K
C905
10uF/16VC905 10uF/16V
R929
NC
R929
NC
B
C
E
Q901
SMBT3904
B
C
E
Q901
SMBT3904
1
3 2
R921
51K
R921
51K
TP915TP915
K904
STOPK904STOP
1 2
R906
20K
R906
20K
R938
430/270
R938
430/270
C929
104
C929
104
+
C920
47uF/10V
+
C920
47uF/10V
12
R948
1K
R948
1K
R907
10K
R907
10K
C948
100pF
C948
100pF
K903
PREK903PRE
1 2
C939ESD(15pF) C939ESD(15pF)
C944
100pF
C944
100pF
TP917TP917
R949
10K
R949
10K
C922
22uF/16V
C922
22uF/16V
U902
78L05
U902
78L05
GND
2
IN
3
OUT
1
TP911TP911
R922
10K
R922
10K
R941
0R
R941
0R
B
C
E
Q904
SMBT3906
B
C
E
Q904
SMBT3906
2 3
1
C957
104
C957
104
VR901
10K
VR901
10K
1
2
3
CN901
CON26_0.5MM
CN901
CON26_0.5MM
10
9
8
7
6
5
4
3
2
1
11
13
12
15
14
16
20
19
18
17
24
23
22
21
26
25
27
28
C932 10uF/16VC932 10uF/16VC931
100pF
C931
100pF
C912
105
C912
105
R920
10K
R920
10K
C958
2.2uF/16V X5R
C958
2.2uF/16V X5R
C914
104
C914
104
C910
105C910 105
B
C
E
Q905
SMBT3904
B
C
E
Q905
SMBT3904
1
3 2
R947
270K
R947
270K
R924
10K
R924
10K
C918
104
C918
104
C901
10uF/16V
C901
10uF/16V
TP910TP910
L905
4.7uHL905 4.7uH
L907
1.8uH
L907
1.8uH
C945
105C945 105
L904
1.8uH
L904
1.8uH
LGE Internal Use Only
3-5 3-6
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Page 16
PRINTED CIRCUIT BOARD DIAGRAM
(TOP VIEW)
MEMO
(BOTTOM VIEW)
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3-7 3-8
LGE Internal Use Only
Page 17
MEMO MEMO
LGE Internal Use Only
3-9 3-10
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Page 18
MAIN PART
MAIN ELECTRICAL TROUBLESHOOTING GUIDE
1. DC-DC CONVERTER CIRCUIT
A. NO POWER ON BY ADAPTOR B. NO POWER ON BY BATTERY
No power on
by ADAPTOR
YES
Is ADAPTOR
out 12V?
YES
Is D606 OK?
No +18V
NO
NO
Replace ADAPTOR
Replace D606
No LCD_3.3V
No S3.3V
No power on
by BATTERY
YES
Is BATTERY OK?
No A+5V
No M5V
VCC_5V
NO
Replace BATTERY
No 5VA
Is U401
3.3V OK?
YES
Is U202 1.8V OK?
NO
Replace U401
NO
Replace U202
NO
Replace U401
NO
Replace U202
Is U401
5V OK?
YES
Is Q402 5V OK?
NO
Replace U401
Is U401
5V OK?
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3-11
LGE Internal Use Only
Page 19
MAIN ELECTRICAL TROUBLESHOOTING GUIDE
C. AUDIO OUT ABNORMAL
Audio out abnormal
YES
Check Audio jack & mode
YES
Check A+5V
YES
Check signals from MPEG
YES
Replace IC(U502)
D. VIDEO OUT ABNORMAL
Video out abnormal
YES
Check Video jack & mode
YES
Check A+5V
YES
Check signals from MPEG
YES
Check IC(U502)
E. PICTURE ABNORMAL
Picture abnormal
YES
Check the disc.
YES
Refer to SERVO part
YES
Check DCLK signal of MPEG part
YES
Check MPEG (IC U201)
YES
Replace B/D
F. DISC ERROR
Disc error
YES
Check Disc
YES
Refer to SERVO part
YES
Replace B/D
LGE Internal Use Only
3-12
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Page 20
MAIN ELECTRICAL TROUBLESHOOTING GUIDE
G. OPEN/CLOSE ABNORMAL
OPEN/CLOSE abnormal
YES
Check SW201, SW202 switch
YES
Check IC(U201) Pin92
YES
Refer to SERVO part.
NO
Check the connectin of MD.
YES
Refer to SERVO part.
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3-13
LGE Internal Use Only
Page 21
MAIN ELECTRICAL TROUBLESHOOTING GUIDE
2. MPEG CIRCUIT
Power is on
Does logo appear
on the screen?
YES
Does the
Video of the DVD Disc
play properly?
YES
Does the
Video of the video CD
play properly?
OPTION
If included VCD function.
NO
NO
YES
NO
Check power & clock.
YES
Is MPEG data
signal normal?
YES
Is error
signal normal?
Is MPEG data
signal normal?
NO
OK
NO
NO
Check CD/DVD DSP
output signal.
OK
Check MPEG Decoder
input signal.
Check CD/DVD DSP
output signal.
YES
Check MPEG Decoder
input signal.
Check CD/DVD DSP
output signal.
OK
Check MPEG Decoder
input signal.
the audio sound output
normally?
YES
LGE Internal Use Only
Does
END
NO
Is clock normal?
YES
Does the audio
signal output from MPEG
decoder?
YES
3-14
NO
NO
Copyright © 2008 LG Electronics. Inc. All right reserved.
Check clock signal
Check clock signal
Only for training and service purposes
Page 22
MAIN ELECTRICAL TROUBLESHOOTING GUIDE
3. RF/SERVO CIRCUIT
Put Disc in.
YES
Disc ID is correct?
YES
Does spindle rotate.
YES
Replace IC(U201)
NO
NO
NO
Laser off
Proper RFL signal
on MT1389?
YES
Check the RFL connection
between J401 and MT1389.
Proper DMSO signal
on MT1389
YES
Check the cable connection
between spindle and main PCBA.
NO
NO
Check the related circuit on
MT1389 RFL signal .
Check DMSO related circuit
on MT1389.
A
YES
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3-15
LGE Internal Use Only
Page 23
MAIN ELECTRICAL TROUBLESHOOTING GUIDE
A
YES
Focus on OK.
YES
Track on OK.
NO
NO
Proper
signals on A, B, C, D
of MT1389
YES
Proper FEO signal
on MT1389.
YES
Check IC(U401)
Proper FEO signal
on MT1389.
YES
Properly TRSO signal
on MT1389.
YES
NO
NO
NO
NO
Check connections between
MT1389 and pick-up head.
Check the related circuit
on MT1389 FEO sugnal.
Check the related circuit
on MT1389
Check the TRSO connection
on MT1389 and motor dirver.
Disc is play?
B
LGE Internal Use Only
YES
YES
NO
T+ & T-
output properly.
YES
Check cable connection on
pick-up head.
YES
Check RF signal waveform.
3-16
Check the tracking control
amp circuit on motor driver.
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Page 24
MAIN ELECTRICAL TROUBLESHOOTING GUIDE
B
YES
Normal
Audio output when
disc playback.
YES
Normal
IR. VFD & Front pannel
key functions.
YES
NO
NO
Aout_L, Aout_R signal
Proper
on MTK1389
YES
Check Audio filter, amplify,
mute circuit.
Commu-
nications between
IR.VFD Front pannel key &
MT1389 & Front µ-com
is normally.
YES
NO
NO
NO
Check Aout_L related circuit
Aout_R
Check the related circuit of
Audio DAC.
Check communi cation lines
on MT1389
TEST END
NO
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Check the cable connection
on Front pannel.
3-17
LGE Internal Use Only
Page 25
MAIN ELECTRICAL TROUBLESHOOTING GUIDE
4. CHARGING CIRCUIT
No turn on Red LED Is 8.4V of J602_Pin3 OK?
NO
YES
Is L601 OK?
YES
Is IC(U601) OK?
YES
Is L602 OK?
YES
NO
NO
NO
Replace L601.
Replace IC(U601).
Replace L602.
Is IC(U603) OK?
NO
Replace IC(U603).
LGE Internal Use Only
3-18
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Page 26
DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING
1. SYSTEM 27MHz CLOCK, RESET & FLASH R/W SIGNAL
1) MT1379 main clock is at 27MHz (X201)
2. SDRAM CLOCK
1) MT1389 main clock is at 27MHz (R308)
DCLK=125MHz, Vp-p=3.7V
U301 PIN38
FIG 1-1
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
FIG 2-1
3-19
LGE Internal Use Only
Page 27
3. DISC TYPE JUDGEMENT WAVEFORM
F+(U401 PIN8)
FE(U201 PIN26)
RFL(U201 PIN21)
FIG 3-1
F+(U401 PIN8)
FE(U201 PIN26)
RFL(U201 PIN21)
LGE Internal Use Only
FIG 3-2
3-20
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Page 28
F+(U401 PIN8)
FE(U201 PIN26)
RFL(U201 PIN21)
FIG 3-3
F+(U401 PIN8)
FE(U201 PIN26)
RFL(U201 PIN21)
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
FIG 3-4
3-21
LGE Internal Use Only
Page 29
4. FOCUS ON WAVEFORM
FOSO(U401 PIN11)
F+(U401 PIN8)
F-(U401 PIN9)
FIG 4-1
5. SPINDLE CONTROL WAVEFORM (NO DISC CONDITION)
DMSO(U401 PIN12)
SP-(U401 PIN15)
SP+(U401 PIN14)
FIG 5-1
LGE Internal Use Only
3-22
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Page 30
6. TRACKING CONTROL RELATED SIGNAL (SYSTEM CHECKING)
TE(U201 PIN27)
TRSO(U401 PIN23)
T-(U401 PIN18)
T+(U401 PIN17)
FIG 6-1
TE(U201 PIN27)
TRSO(U401 PIN23)
T-(U401 PIN18)
T+(U401 PIN17)
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
FIG 6-2
3-23
LGE Internal Use Only
Page 31
7. MT1389 AUDIO OPTICAL AND COAXIAL OUTPUT (ASPDIF)
ASDIF Vpp=2.5V
(U201 PIN208)
FIG 7-1
8. MT1389 VIDEO OUTPUT WAVEFORM
1) Full colorbar signal (CVBS)
(U501 PIN14)
LGE Internal Use Only
FIG 8-1
3-24
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Page 32
9. AUDIO OUTPUT FROM AUDIO DAC
1) Audio L/R
MR 1kHz 0dB
(JK601 PIN4, 5)
2) Audio related Signal
FIG 9-1
ASDATA3
ASDAT0(IC301 PIN3)
ABCK(IC301 PIN4)
ALRCK(IC5301 PIN5)
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
FIG 9-2
3-25
LGE Internal Use Only
Page 33
WIRING CONNECTION DIAGRAMS
MAIN PCB
LCD PCB
1. WIRING CONNECTION DIAGRAMS-1
MAIN PCB LCD PCB
(MAIN PCB <----> LCD PCB)
0.8-12Y-12Y-220mm
0.8-20Y-20Y-220mm
MAIN PCB
LCD PCB
LGE Internal Use Only
3-26
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Page 34
2. WIRING CONNECTION DIAGRAMS-2
MAIN PCB
KEY PCB
(MAIN PCB <----> KEY PCB)
KEY PCB
MAIN PCB
KEY PCB
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3-27
1.0-10Y-10Y-80mm
LGE Internal Use Only
Page 35
MEMO
LGE Internal Use Only
3-28
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Page 36
BLOCK DIAGRAMS
1. OVERALL BLOCK DIAGRAM
DECK MECHANISM
SPINDLE
MOTOR
SLED
MOTO
M
M5V
MOTOR DRIVER
DC-DC BLOCK1
DISC
M
R
SL+,
SL-
AM5898N
SP+,
SP
-
PICK
UP
27MHz
LDO1,LDO2,IOA,V20
A,B,C,D,E,F,RFO,MDI1/2
F+,F-,
T+,T-
V1P4,FOSO,TRSO,FMSO,DMSO,STBY
VCC5V
5VA
2F2301P
A+5V
M5V
XI,X
TRO
PEN
LIMIT
OPO
OP-,OP+
O
3.3V/BAT_OUT
LCD PANEL
VCOMO,CPH1/2/3,
1.8V/3.3V
MOD,89P_R/G/B,
STHL/R, STVL/R,
OEH/V,LNR,UND,
CKV,PWRCTL_LCD
8/16/32MBit
FLASH
MEMORY
R#
A[0..21]
PCE#,PRD#,PW
MT1389LP
MPEG
AD[0..7]
3.3V3.3V
64MBit
SDRAM
MA[0..11], BA[0..1],
CS#,CAS#,RAS#,
WE#,DQM[0..1]
DCLK,DCKE
DQ[0..15]
AOUT_L/R
A_MUTE_SW
SP_M
UTE
CV
BS
A± 5V
NJM4580M
A+5V
PT2303
VOLUME
SP_L/R+/
SP_L/R-
/AV_JACK_I
-
N
AV OUT
SPK
H/
P
DC-DC BLOCK2
DC_IN
P+
BATTERY
P-
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
SM9926K
APM4953K
3.3V
CM1117
V18
BAT_OUT
/M_RESET
STANDBY
AD_PR
PWM
AD_U
AD_T
AD_I
5VA
AD_K
KEY
REMOCON
RECEIVE
3-29 3-30
GT6312
IR
CH_SCS,
SCLK,
SDO
R
SDI
RED,
GREEN
Power,
Charge LE
D
LGE Internal Use Only
Page 37
2. POWER BLOCK DIAGRAM
t
Charge
AC/DC Adapter
DC Sense BAT Sense
GT6 312
12V in
Battery Charge Circuit
Charge Enable
BAT out
Charge
Thermister
Divide Divide
FET
BAT Con
SW (12V in)
5VA
5VA
M5V
Discharge
REMOCON
RECEIVER
Servo
LGE Internal Use Only
DC-DC
AM5898N
S/W
S/W
Reg
Standby
3-31 3-32
A+5V
3.3V
1.8V
RCR2561
LCD
Vcc
7.5V
-10V
15V
DV
Battery out
A+5V
Video
Audio
A+5V
3.3V
1.8
V
7.5V
-10V
15V
5VD
Copyright © 2008 LG Electronics. Inc. All right reserved.
System
LCD
Panel
Only for training and service purposes
Page 38
3. SERVO BLOCK DIAGRAM
ALPC
CDLD(LD01),DVDLD(LD02)
IOA
U201
Y201
27MHz
X-TA
L
PICK
UP
Stepping
Mote
r
LIMIT
FO+, FO-,
TR+, TR-
SL-,SL+
MDI1,MDI2
DVD : A,B,C,D,RF
CD : A,B,C,D,E,
F,RF
U401
MTK1389DE/LP
P-DVDPLAYER
ONE CHIP
FMSO,DMSO,FOSO,
TRSO,STBY,
V1P4
Spindle
Mote
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
AM5898N
Motor
SP-,SP+
r
OP+,OP-
OP
3-33 3-34
Driver
O
LGE Internal Use Only
Page 39
4. SYSTEM BLOCK DIAGRAM
SF_DO
System & AV Part
27MHz
1.8V/3.3V
3.3V
SF_DO
MT1389DE/LP
MPEG
IROUT
SF_DI
SF_CS
SF_CK
MA0~MA11,DBA0/1
DQ0~DQ15
DCLK,DCKE
CS#,CAS#,RAS#
WE#,DQM0,DQM1
DVD_K1,DVD_K2,DVD_K3,
DVD_K4,DVD_K5
16/32MBit
FLASH
MEMORY
3.3V
64MBit
SDRAM
2^14*2^8*16=64Mbit
LGE Internal Use Only
REMOCON
RECEIVER
IR
5VA
GT6312
RED,
GREEN
Power,
Charge LED
AD_KEY
3-35 3-36
KEY1
KEY2
LCD MODE,DISPLAY,SETUP,MENU
UP,DOWN,LEFT,RIGHT,ENTER
POWER,PLAY/PAUSE,REW,FF,STOP,
COLOR/BRIGHT
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Page 40
5. AV BLOCK DIAGRAM
GT
6312
1.8V/3.3V
5VA
GT
System & AV Part
6312
VIDEO ADC
2CH DAC
CVBS
A_MUTE_SW
AOUT_L/R
12V
NJM4580M
OP-AMP
VOLUME
SP_MUTE
A+5V
PT2303
VIDEO
< AV OUT >
AUDIO
SP_L+/L-
SPK
SP_R+/R-
SPK
MT1389DE/LP
MPEG
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
SDA,SCL,
ML_OUT,MR_OUT
3-37 3-38
SP_L-/R-
SP_L-/R-
H/P JACK
H/P JACK
LGE Internal Use Only
Page 41
CIRCUIT DIAGRAMS
02.MPEG
LG & MALATA
Thursday, December 20, 2007
02.MPEG
LG & MALATA
Thursday, December 20, 2007
02.MPEG
LG & MALATA
Thursday, December 20, 2007
SDA
SCL
DCLK
DQM[0..1]
WE#
RAS#
MA[0..11]
CAS#
3.3V
GND
89L_B
89L_G
89L_R
CPH1
STHL
OEH
OEV
CKV
STVL
DQ[0..15]
AL
AR
IR_OUT
C
LDO1
D
LDO2
STBY
E
V1P4
F
RFO
DMSO
TRSO
FOSO
FMSO
IOA
MDI1
OPO
A
LIMIT
V20
OP-
B
DVD_SLEEP
CVBS
DVD_KEY1
DVD_KEY3
DVD_KEY2
DVD_KEY4
DVD_KEY5
DVD_KEY6
OP-
AVCM
RFVDD3
MA3
IR_OUT
AVDD33
LIMIT
V20
MA1
TRO
FOO
V1P4
FMO
DMO
FOSOFOSOFOSOFOSOFOSOFOSO
TRSOTRSOTRSOTRSOTRSOTRSO
DMSODMSODMSODMSODMSODMSO
FMSOFMSOFMSOFMSO
TRIN
MA0
TXD
RFO
FS
RXD
MA10
DVD_KEY5
DVD_KEY4
BA1
BA0
D
A
B
C
RAS#
STVL
AADVDD
CAS#
CKV
OPO
RFV18-1
WE#
AADVDD
MA4
MA11
APLLVDD3
MA5
DCLK
DQM1
MA6
MA7
SF_CS
SF_DO
SF_D
I
DACV
DD3
TXD
RXD
RFV18-1
RFV18-2
SF_CK
SC
L
SDA
DQ0
DQ1
DQ2DQ3
DACVDD3
DQ4
DQ5
ADACVD
D
DACVDD3
DVD_KEY
1
DQ
7
DQ6
DVD_KEY
2
DVD_KEY3
DQM
0
DQ
15DQ12
DQ13
DQ10
DQ11DQ
8
APLLVDD3
ADACVDD
MA9
MA8
DACVDD3
VCOMO
DQ
9
89L_G
DQ
14
F
89L_B
DVD_SL
EEP
89L_R
E
AL
AR
DVD_
KEY6
STHLOE
H
V1P4
DVD_KEY5
DVD_KEY6
DVD_KEY1
DVD_KEY2
DVD_KEY3
DVD_KEY4
VCOMO
SF_CS
SF_DI
SF_DO
SF_CK
MA2
FOO
XI
DMO
FG
TRO
RFVDD3
AVDD33
RFV18-2
IOA
XO
STBY
FMO
V20
V1P4
OEV
BA1
BA0OPO
OP+
OP+
TRIN
URST#
CP
H1
CVBS
XI XO
LDO1
LDO2
MDI1
URST#
DV33
DV33
V18
DV33
DV33 V18
V18
AVDD33
DV33
RFVDD3
DV33
AVDD33
DV33
AADVDD
V18
RFV18-1
RFV18-2
DV33
ADACVDD
APLLVDD3
DACVDD3
RFVDD3
RFV18-2
RFV18-1
3.3V
DV33
DV33
DV333.3V
3.3V
V18
DV33
V18
GND
3,4,5,6,7
3.3V
3.4,7
89L_B 7
89L_G 7
89L_R 7
CPH1 7
STHL 7
OEH
7
OEV 7
CKV
7
STVL
7
DQ[0..15]
3
SDA
3
SCL
3
MA[0..11]
3
RAS#
3
WE#
3
CAS#
3
DCLK
3
DQM[0..1] 3
AR
5
AL
5
IR_OUT
6
V20
4
V1P4
4
STBY
4
DMSO 4
FOSO
4
TRSO
4
FMSO
4
OPO
4
LIMIT
4
IOA
4
LDO1
4
LDO2
4
A4
B4
C4
D4
E4
F4
RFO
4
MDI1
4
OP-
4
DVD_SLEEP
7
CVBS
5
DVD_KEY6
7
DVD_KEY1
7
DVD_KEY3
7
DVD_KEY4
7
DVD_KEY2
7
DVD_KEY5
7
VCOMO
7
SF_CS
3
SF_DI
3
SF_CK 3
SF_DO
3
BA1
3
BA0
3
OP+
4
AUDIO INTERFACE
MEMORY
POWER
CONTRL
IIC
FLASH
SERVO I/F
DVD_KEY
10K C TO 4.7K(11.21)
R259 0R259 0
L213
10uH
L213
10uH
C211 4.7uFC211 4.7uF
B
C
E
Q202
3904
B
C
E
Q202
3904
1
3 2
C221
0.1uF
C221
0.1uF
L208
47uH/NC L20847uH/NC
R229
10KR229 10K
C204
1000pF/NC
C204
1000pF/NC
+
CE206
10uF/16V
+
CE206
10uF/16V
12
R209 0R209 0
R202
0RR202 0R
C209
120pF/NC
C209
120pF/NC
R268
0R268 0
MT1389LP
U201
MT1389L/SMD
LQFP-128
MT1389LP
U201
MT1389L/SMD
LQFP-128
RFA
1
RFB
2
RFC
3
RFD
4
RFE
5
RFF
6
AVDD18_2
7
AVDD33_1
8
XTALI
9
XTALO
10
AGND33
11
V20
12
V14
13
REXT
14
MDI1
15
MDI2
16
LDO1
17
MDILDO2
18
AVDD33_2
19
DMO
20
FMO
21
TRAY_OPEN
22
TRAY_CLOSE
23
TRO
24
FOO
25
PG/GPIO2
26
USB_DP
27
USB_DM
28
VDD33_USB
29
VSS33_USB
30
PAD_VRT
31
VDD18_USB
32
GPIO3/INT#
33
GPIO434GPIO635SF_CS_36SF_DO37SF_DI38SF_CK39UP1_6/SCL40UP1_7/SDA41ICE42PRST#43IR44RD045RD146RD247RD348RD449DVDD3350RD551RD652RD753DVDD1854DQM055RD1556RD1457RD1358RD1259DVSS3360RD1161RD1062RD963RD8
64
VOE/GPIO15
96
VCK/GPIO14
95
VSTU/GPIO13
94
SPDIF/GPIO12
93
HSTR/11
92
LR/GPIO10
91
DVDD18
90
UD/GPIO9
89
VSTD/GPIO8
88
GPIO7/CKE
87
RA3
86
RA2
85
DVDD33
84
RA1
83
RA0
82
RA10
81
BA1
80
DVSS18
79
BA0
78
RAS#
77
CAS#
76
RWE#
75
RA4
74
RA5
73
RA6
72
RA7
71
RA8
70
RA9
69
DVDD33
68
RA11
67
RCLK
66
DQM1
65
HCK/GPIO18
99
HSTL/GPIO17
98
HOE/GPIO16
97
RFH/OPINN
128
RFG/OPINP
127
RFIN/OPOUT
126
RFIP
125
AGND18
124
AVDD18_1
123
ADACVDD2
122
ADACVDD1
121
AL/GPIO1
120
AVCM
119
AR/GPIO0
118
ADACVSS
117
APLLCAP
116
APLLVDD
115
AADVDD
114
AKIN1/GPIO21/Audio_mute
113
ADVCM/GPIO20
112
AKIN2/GPIO19/Audio_mute
111
AADVSS
110R109B108G107
DACVDDA
106
DACVDDB
105
CVBS
104
DACVSSC
103FS102
VREF
101
DACVDDC
100
C202
330pF
C202
330pF
R269
0
R269
0
C218
0.1uF
C218
0.1uF
L209
2.7uH/NC
L209
2.7uH/NC
R216
15KR216 15K
RN201
10Kx4RN20110Kx4
1 8
2 7
3 6
4 5
L211
CBV160808A471B
L211
CBV160808A471B
1 2
L204
FB(50)
L204
FB(50)
1 2
L21047uH L21047uH
C227
0.1uF
C227
0.1uF
C207
0.015uF
C207
0.015uF
C201
0.1uF
C201
0.1uF
R206
0R206 0
C226
0.1uF
C226
0.1uF
R225
3.3K
R225
3.3K
C228 1uFC228 1uF
C224
0.1uF
C224
0.1uF
R221
27KR221 27K
C203
0.1uF
C203
0.1uF
R226
15K
R226
15K
R224
3.3K
R224
3.3K
C215
0.1uF
C215
0.1uF
C239
1uF
C239
1uF
C216
0.1uF
C216
0.1uF
C208 0.1uFC208 0.1uF
D201
1N4148/NC
D201
1N4148/NC
1 2
C205
0.1uF
C205
0.1uF
R208
0R208 0
C232
27pF
C232
27pF
C222 1500pFC222 1500pF
R213 5.1KR213 5.1K
J201
CON4_2.0MM_DIP
J201
CON4_2.0MM_DIP
1
2
3
4
C214 220pFC214 220pF
+
CE213
22uF/16V
+
CE213
22uF/16V
12
R220 4.7kR220 4.7k
+
CE207
47uF/6.3v
+
CE207
47uF/6.3v
12
C230 0.1uFC230 0.1uF
C220
10uF/10V
C220
10uF/10V
C235
0.1uF
C235
0.1uF
C213
0.1uF
C213
0.1uF
R230
330R230 330
L207
FB(1206)
L207
FB(1206)
1 2
R211 15KR211 15K
R219
10K
R219
10K
L212
FB(
600)
L212
FB(600)
1 2
+
CE204
10uF/16V
+
CE204
10uF/16V
12
+
CE208
100uF/6.3V
+
CE208
100uF/6.3V
12
R217 10kR217 10k
C210
6800pF
C210
6800pF
C241
180pF
C241
180pF
C219
0.1uF
C219
0.1uF
C217
NCC217 NC
R212
0R212 0
L205
FB(50)
L205
FB(50)
1 2
+
CE205
100uF/6.3V
+
CE205
100uF/6.3V
12
R218
10K
R218
10K
L215
10uH
L215
10uH
R228
0R228 0
L206
FB(50)
L206
FB(50)
1 2
R201 100KR201 100K
C233
6800pF
C233
6800pF
C225
0.1uF
C225
0.1uF
R205
10
R205
10
R236
22K
R236
22K
C234
0.1uF
C234
0.1uF
U202
CM1117SCM233
SOT223
U202
CM1117SCM233
SOT223
OUT
2
IN
3
ADJ
1
TAB
4
C223
0.1uF
C223
0.1uF
SW201
SW212
SW201
SW212
1 4
2 3
C238
0.1uF
C238
0.1uF
R235
4.7K
R235
4.7K
L214
10uH
L214
10uH
C229
330pF
C229
330pF
R210
0R210 0
C206
0.1uF
C206
0.1uF
R222
0R222 0
C231
0.1uF
C231
0.1uF
R203
0RR203 0R
R233
0R/NCR233 0R/NC
+
CE201
100uF/6.3V
+
CE201
100uF/6.3V
1 2
Y201
27M
Y201
27M
1 2
3
R207 10R207 10
+
CE202
100uF/6.3v
+
CE202
100uF/6.3v
12
SW202
SW212
SW202
SW212
1 4
2 3
L203 FB(50)L203 FB(50)
1 2
R204
560R 1%
R204
560R 1%
+
CE203
100uF/6.3v
+
CE203
100uF/6.3v
12
L202
FB(50)
L202
FB(50)
1 2
+
CE211
220uF/6.3v
+
CE211
220uF/6.3v
12
R232 0R232 0
+
CE209
100uF/6.3V
+
CE209
100uF/6.3V
12
R234 0R/NCR234 0R/NC
L201
FB(50)
L201
FB(50)
1 2
+
CE212
220uF/6.3v
+
CE212
220uF/6.3v
12
C212
27pF
C212
27pF
B
C
E
Q201
3904
B
C
E
Q201
3904
1
3 2
C236
0.1uF
C236
0.1uF
R223
680
R223
680
R249 2KR249 2K
R214
27KR214 27K
1. MPEG CIRCUIT DIAGRAM
LGE Internal Use Only
3-39 3-40
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Page 42
2. MEMORY CIRCUIT DIAGRAM
MA0
SF_CS
BA1
DQ[0..15]
DQM[0..1]
MA[0..11]
SCL
SDA
WE#
DCLK
CAS#
RAS#
BA0
3.3V
SF_CK
SF_CS
SF_DO
SF_DI
SDCLK
DQM1
DRAS#
MA5
MA9
DQ0
SDCKE
MA10
DCAS#
DQ9
DCAS#
DBA1
BA1
DRAS#
DQ1
MA8
DCS#
DQ11
DQ15
BA0
MA6
CAS#
SDCKE MA7
WE#
MA4
DQ3
DQ5
DWE#
MA11
DCLK
RAS#
DBA0
MA1
DQ2
DQ7
MA2
DQ10DCS#
DQ8
DBA0
SDCLK
DBA1
DQ4
MA3
DWE#
DQM0
DQ14
DQ6
DQ13
DQ12
GND
SF_CK
SF_DI
SF_CS
SF_DO
SD33
SD33
SD33
SD33
SD33
SD33
3.3V SD33
SD33
SD33
BA1
3
WE#
3
DCLK
3
CAS#
3
RAS#
3
DQM[0..1]
3
SCL
2
SDA
2
DQ[0..15]
3
MA[0..11]
3
BA0
3
3.3V
2,4,7
SF_CK
2
SF_CS
2
SF_DO
2
SF_DI
2
GND 2,4,5,6,7
DRAM
IIC
SDRAM
4Mb/8Mb
S-FLASH
S-FLASH
R315 0R315 0
C305
0.1uF
C305
0.1uF
R312
0R312 0
C303
0.1uF
C303
0.1uF
C302
0.1uF
C302
0.1uF
U302
AT25FS040/EN25B80
U302
AT25FS040/EN25B80
CS#
1
DO
2
WP#
3
VSS
4
DI
5
CLK
6
HOLD#
7
VCC
8
R310
NCR310 NC
R311
10KR311 10K
R302
10KR302 10K
RN301
33x4
RN301
33x4
1 8
2 7
3 6
4 5
C309
0.1uF
C309
0.1uF
R314
0R314 0
L301
FB(50)L301 FB(50)
1 2
C304
0.1uF
C304
0.1uF
C308
0.1uF
C308
0.1uF
C306
0.1uF
C306
0.1uF
C307
0.1uF
C307
0.1uF
R303
150R303 150
R307
10KR307 10K
+
CE301
47uF/10V
+
CE301
47uF/10V
12
R301 10KR301 10K
R313
0R313 0
U301
HY57V641620
U301
HY57V641620
A0
23
A1
24
A2
25
A3
26
A4
29
A5
30
A6
31
A7
32
A8
33
A9
34
A10/AP
22
A11
35
BA0/A13
20
BA1/A12
21
CLK
38
CKE
37
CS
19
RAS
18
CAS
17
WE
16
DQML
15
DQMH
39
NC1
36
NC2
40
VSS
54
VSS
41
VSS
28
DQ0
2
DQ1
4
DQ2
5
DQ3
7
DQ4
8
DQ5
10
DQ6
11
DQ7
13
DQ8
42
DQ9
44
DQ10
45
DQ11
47
DQ12
48
DQ13
50
DQ14
51
DQ15
53
VCC
1
VCC
14
VCC
27
VCCQ
3
VCCQ
9
VCCQ
43
VCCQ
49
VSSQ
6
VSSQ
12
VSSQ
46
VSSQ
52
R306
10KR306 10K
C301
0.1uF
C301
0.1uF
R304
33R304 33
R305
33R305 33
03.MEMORY
LG & MALATA
Thursday, December 20, 2007
03.MEMORY
LG & MALATA
Thursday, December 20, 2007
03.MEMORY
LG & MALATA
Thursday, December 20, 2007
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3-41 3-42
LGE Internal Use Only
Page 43
3. OPU & MOTOR CIRCUIT DIAGRAM
04.OPU & MOTOR
LG & MALATA
Thursday, December 20, 2007
04.OPU & MOTOR
LG & MALATA
Thursday, December 20, 2007
04.OPU & MOTOR
LG & MALATA
Thursday, December 20, 2007
LDO1
V1P4
TRSO
C
LDO2
OPO
D
V20
LIMIT
STBY
DMSO
RFO
E
FOSO
MDI1
A
F-
F+
T+
T-
D
B
E
GND
FMSO
F
OP-
B
F+
F-
CT1
FMSO
TRSO
STBY
V1P4
CT1
3.3V
A+5V
BAT_OUT
IOA
GND
LIMIT
OP+
V1P4
SP-
OP-
SL+
SL-
SP-A
SP+
C
A
VR_CD
VR_DVD
LD_CD
MDI1
STANDBY
STANDBY
V20
F
IOA
VCC_5V
OPO
LCD_3.3V
5VA
MDI1
OPO
SP- OP-
SP+
SP-A
T-
SP-
SP+
DMSO
FOSO
T+
SLSL+
OP+
IOA
VCC_5V
RFO
STANDBY
LDO1
LDO2
LD_DVD
VCC_5V
BAT_OUT
M5V
M5V
3.3V
BAT_OUT
BAT_OUT
M5V
BAT_OUT
BAT_OUT
S3.3V3.3V
BAT_OUT
M5V
M5V
VCC_5V
M5VVCC_5V
A+5V
LCD_3.3V
S3.3V
5VA
S3.3V
S3.3V
S3.3V
LDO1
2
V1P4
2
TRSO
2
C2
LDO2
2
OPO
2
D2
LIMIT
2
DMSO
2
RFO
2
E2
FOSO
2
MDI1
2
A2
FMSO
2
F2
OP-
2
B2
3.3V
2,3,7
A+5V
5
BAT_OUT
5,6,7
IOA
2
GND
2,3,5,6,7
STBY
2
STANDBY
6
V20
2
VCC_5V
7
LCD_3.3V
7
5VA
6,7
OP+ 2
SERVO I/F
OFF-PAGE CONNECTION
5V Power for Video Buffer & Motor Driver & OPU
3
2SB1132
1
C2EB
ADD(11.26)
ADD(11.29)
R415 15R415 15
J401
HEADER 24 SMD0.5 TOP
CON24_0.5MM
J401
HEADER 24 SMD0.5 TOP
CON24_0.5MM
10
9
8
7
6
5
4
3
2
1
11
13
12
15
14
16
20
19
18
17
24
23
22
21
25
26
L409
47uH(LH)
L409
47uH(LH)
B
C
E
Q412
3906
B
C
E
Q412
3906
2 3
1
+
CE415
47uF/6.3v
+
CE415
47uF/6.3v
12
Q411
2SB1132
Q411
2SB1132
1
23
+
CE410
220uF/10V
+
CE410
220uF/10V
12
R401 10kR401 10k
R448
10KR448 10K
R459
100KR459 100K
C430
0.1uFC430 0.1uF
R409
750
R409
750
R453 10KR453 10K
C426
0.1uF
C426
0.1uF
R438
20KR438 20K
R406
150K/NC
R406
150K/NC
C411
1uF
C411
1uF
R430
0.11%R430 0.11%
R442
0
R442
0
J402
2x1 W/HOUSING
CON2_2.0MM_DIP_B
J402
2x1 W/HOUSING
CON2_2.0MM_DIP_B
2
1
D
S
G
Q410
AO3409
P-CHANNEL
D
S
G
Q410
AO3409
P-CHANNEL
1
32
R427 0.1 1%R427 0.1 1%
B
C
E
Q413
3906
B
C
E
Q413
3906
23
1
C420
0.1uF
C420
0.1uF
L407
FB(50)
L407
FB(50)
R423
10KR423 10K
R418
3.6K 1%R418 3.6K 1%
R461
47K/NC
R461
47K/NC
C419
1000pF
C419
1000pF
R462
10K
R462
10K
R447
10KR447 10K
C417
68pFC417 68pF
R454
100KR454 100K
R407
2K 1%R407 2K 1%
R443
0/NC
R443
0/NC
R416
100R416 100
+
CE417
220uF/6.3v
+
CE417
220uF/6.3v
1 2
R463
10K
R463
10K
L412
47
UH(
L412
47UH(
1 2
D401
1N5819
D401
1N5819
1 2
+
CE406
100uF/10V
+
CE406
100uF/10V
12
L410
FB(50)
L410
FB(50)
C409
0.1uF
C409
0.1uF
U401
AM5898N
U401
AM5898N
EN2
1
GND
35
VCC1
10
VINSL+
12
COMP2
3
CT2
2
VOSP-
21
PVCC2
7
VOSL+
14
MGND
13
PGND1
26
PGND
25
GND
36
COMP1
30
MUTE
33
PVCC1
6
SW2
4
IPK2
5
BIAS
34
VOFC-
9
VINFC
11
VINTK
23
VCC2
24
VINSP
22
SW1
29
IPK1
28
CT1
31
EN1
32
VOFC+
8
PGND2
27
VOSL-
15
MGND
16
VOTK+
17
VOSP+
20
MGND
19
VOTK-
18
C402
2200pF/NC
C402
2200pF/NC
B
C
E
Q407
3906
B
C
E
Q407
3906
2 3
1
C435
0.1uF
C435
0.1uF
C410
0.1uF
C410
0.1uF
L403
50
L403
50
1 2
R455
0
R455
0
J403
4x1 W/HOUSING
J403
4x1 W/HOUSING
1
2
3
4
C421
0.1uF
C421
0.1uF
C415
1000pF
C415
1000pF
+
CE402
47uF/10V
+
CE402
47uF/10V
12
+
CE403
47uF/10V
+
CE403
47uF/10V
12
R464 0R464 0
D403
BAT54CD403BAT54C
3
2
1
C425
0.1uF
C425
0.1uF
C416
68pFC416 68pF
B
C
E
Q415
2N3904
B
C
E
Q415
2N3904
1
3 2
R413
680K
R413
680K
C408
0.1uF
C408
0.1uF
R437
4.7K
R437
4.7K
C428
0.1uF
C428
0.1uF
+
CE416
100uF/10V
+
CE416
100uF/10V
12
R412
1/NC
R412
1/NC
R441
10kR441 10k
+
CE412
220uF/10V
+
CE412
220uF/10V
12
R405
27K
R405
27K
C423
2200pF/NCC423 2200pF/NC
R408
33R408 33
C414
0.1uF
C414
0.1uF
R460
10K/NC
R460
10K/NC
C434
0.1uF
C434
0.1uF
B
C
E
Q409
2N3904
B
C
E
Q409
2N3904
1
3 2
R456
10K
R456
10K
G
S
D
Q418
2SK3018
G
S
D
Q418
2SK3018
1
2 3
R420 680KR420 680K
R402
20KR402 20K
R410
10KR410 10K
R432
10KR432 10K
C401
0.1uF
C401
0.1uF
R421
4.7R421 4.7
C433
0.1uF
C433
0.1uF
R424
4.7R424 4.7
R449
150K/NC
R449
150K/NC
C418
0.1uF
C418
0.1uF
R434
0R434 0
C436
NC
C436
NC
R404
680K/NCR404 680K/NC
C413
NC
C413
NC
R426
51K
R426
51K
R433
0R433 0
R425
1R
R425
1R
L404
10uH
L404
10uH
1 2
C429
0.1uF
C429
0.1uF
R452
OPEN
R452
OPEN
Q414
2SB1132
Q414
2SB1132
1
2 3
L408
47uH(LH)
L408
47uH(LH)
G
S
D
Q417
2SK3018
G
S
D
Q417
2SK3018
1
2 3
+
CE418
47uF/6.3v
+
CE418
47uF/6.3v
12
R465 NCR465 NC
R428
NCR428 NC
L414
10uH
L414
10uH
R422
6.8K
R422
6.8K
D
S
G
Q408
AO3409
P-CHANNEL
D
S
G
Q408
AO3409
P-CHANNEL
1
3 2
C431
NC
C431
NC
R450
1.2K 1%R450 1.2K 1%
D
S
G
Q402
AF2301P/RCR1521SI
P-CHANNEL
D
S
G
Q402
AF2301P/RCR1521SI
P-CHANNEL
1
3 2
+
CE419
100uF/10V
+
CE419
100uF/10V
12
L406
10uH
L406
10uH
1 2
R440 0R440 0
R411
1.2K 1%R411 1.2K 1%
R457
0
R457
0
R451
680K/NC
R451
680K/NC
R429
15R429 15
R431
750
R431
750
B
C
E
Q416
2N3904
B
C
E
Q416
2N3904
1
3 2
+
CE420
100uF/10V
+
CE420
100uF/10V
12
+
CE411
100uF/25V
+
CE411
100uF/25V
12
L413
10uH
L413
10uH
R439
20K
R439
20K
C403
0.1uF
C403
0.1uF
D402
1N5819
D402
1N5819
1 2
L411 FB(50)L411 FB(50)
1 2
R458 10KR458 10K
L405
50
L405
50
1 2
C427
0.1uF
C427
0.1uF
C437
10uF/25V
C437
10uF/25V
Very Important to
reduce Noise
LGE Internal Use Only
3-43 3-44
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Page 44
4. AV CIRCUIT DIAGRAM
05.AV
LG & MALATA
Thursday, December 20, 2007
05.AV
LG & MALATA
Thursday, December 20, 2007
05.AV
LG & MALATA
Thursday, December 20, 2007
AL
AR
SP_LSP_L+
AL
AR
A_MUTE_SW
CVBS
A+5V
GND
SP_RSP_R+
SP_L-
SP_L+
SP_R+
SP_R-
SP_R-
R_SPEAKER
L_SPEAKER
A_MUTE_SW SP_R-
SP_L-
SP_MUTE
SP_L-R_SPEAKER
L_SPEAKER
4580_VCC1
A_MUTE_SW
SP_MUTE
4580_VCCSTANDBY
4580_VCC1
STANDBY
BAT_OUT
MR_OUT
CVBS
ML_OUT
A_MUTE_SW
5VA
5VA
4580_VCC1
A_MUTE_SW
ML_OUT
MR_OUT
A+5V
A+5V
A+5V
4580_VCC
BAT_OUT
AL
2
AR
2
A_MUTE_SW
6
SP_L-
7
SP_L+
7
CVBS
2
A+5V
4
GND
2,3,4,6,7,
SP_R-
7
SP_R+
7
SP_MUTE 6
STANDBY
4,6
BAT_OUT 4,6,7
OFF-PAGE CONNECTION
POWER I/F
DEL Q511 R507 (11.21)
ADD MUTE(11.21)
ADD MUTE(11.21)
CHANGE TO CKX-3.5-009(11.21)
TO 9.1K(11.21)
TO 9.1K(11.21)
TO 4.7UF/50V(11.21)
22PF TO 103(11.29
22PF TO 104(11.29)
56PF TO 102(11.29)
TO 0603(11.29)
TO 1206(11.29)
TO 1206(11.29)
ADD(11.29)
ADD(11.29)
L509
FB(50)
L509
FB(50)
12
L512
FB(600)
L512
FB(600)
12
C516 200pFC516 200pF
B
C
E
Q516
2N3904
B
C
E
Q516
2N3904
1
3 2
R546
1K
R546
1K
R519
10K
R519
10K R508
100K
R508
100K
B
C
E
Q501
2N3904
B
C
E
Q501
2N3904
1
3 2
R552
100K
R552
100K
C511
NC
C511
NC
C523
ESD(15pF)
C523
ESD(15pF)
+
CE516
47uF/10V
+
CE516
47uF/10V
12
R517
1K
R517
1KC533
NC/ESD(0402)
C533
NC/ESD(0402)
R530
100
R530
100
+
CE510
10uF/16V
+
CE510
10uF/16V
1 2
C525
2000pF
C525
2000pF
D501
1N4148
D501
1N4148
1 2
R520
4.7K
R520
4.7K
R541
10K
R541
10K
+
CE506
22uF/16V
+
CE506
22uF/16V
12
C506
0.1uF
C506
0.1uF
B
C
E
Q514
3906
B
C
E
Q514
3906
2 3
1
+
CE504
1uF/50V
+
CE504
1uF/50V
12
R528
5.1K
R528
5.1K
+
CE505
1uF/50V
+
CE505
1uF/50V
1 2
PHONEJACK
J504
HPJACK
PHONE JACK
PHONEJACK
J504
HPJACK
PHONE JACK
2
3
4
5
6
1
C519
0.1uF
C519
0.1uF
+
CE514
10uF/16V
+
CE514
10uF/16V
1 2
R554 10KR554 10K
R523
10KR523 10K
R559
10KR559 10K
C502
100pF
C502
100pF
+
CE515
1uF/50V
+
CE515
1uF/50V
12
C509
103
C509
103
R534
150
R534
150
R509
22K
R509
22K
B
C
E
Q503
2N3904
B
C
E
Q503
2N3904
1
3 2
B
C
E
Q518
3906
B
C
E
Q518
3906
2 3
1
R514
100K
R514
100K
L507
FB(50)
L507
FB(50)
12
R542
47K
R542
47K
+
CE503
1uF/50V
+
CE503
1uF/50V
1 2
R532
10K
R532
10K
R538
4.7K
R538
4.7K
R545
10KR545 10K
VR501
VOLUME
VR501
VOLUME
1
1
2
2
3
3
4
4
5
5
6
6
7
7
+
CE513
1UF/50V
+
CE513
1UF/50V
12
R502 10KR502 10K
R558
10KR558 10K
C505
100pF
C505
100pF
+
CE507
100uF/25V
+
CE507
100uF/25V
12
R543 10KR543 10K
R512
4.7K
R512
4.7K
R535
10KR535 10K
L505
1.8uH
L505
1.8uH
R547
5.1K
R547
5.1K
R526
1K
R526
1K
C504
102
C504
102
R515
1K
R515
1K
C507
2000pF
C507
2000pF
R529
4.7K
R529
4.7K
L511
10UH
L511
10UH
12
R544
22K
R544
22K
TP502TP502
+
CE509
10uF/16V
+
CE509
10uF/16V
12
R549
8.2K
R549
8.2K
L510
10UH
L510
10UH
12
C531
10uF/16V
C531
10uF/16V
B
C
E
Q517
2N3904
B
C
E
Q517
2N3904
1
3 2
C503
103
C503
103
R521
47K
R521
47K
R506
1K
R506
1K
PT2303
U502
PT2303
PT2303
U502
PT2303
Shutdown
1
GND1
2
+IN2
9
VDD
4
-IN2
11
-IN1
6
GND2
7
+IN1
8
+OUT2
14
VREF
10
-OUT2
12
HP-IN
16
VDD
13
-OUT1
5
GND3
15
+OUT1
3
C512
0.1uF
C512
0.1uF
+
CE501
100uF/10V
+
CE501
100uF/10V
1 2
R555
10K
R555
10K
R504
10K
R504
10K
J510
PJ-3513B-3531
J510
PJ-3513B-3531
1122334
4
5
5
6
6
+
CE508
10uF/16V
+
CE508
10uF/16V
12
R548
10K
R548
10K
R516
10K
R516
10K
B
C
E
Q515
3906
B
C
E
Q515
3906
2 3
1
R536
75 1%
R536
75 1%
C534
NC/ESD(0402)
C534
NC/ESD(0402)
+
-
U504A
TJM4558
+
-
U504A
TJM4558
3
2
1
8 4
R540
100K
R540
100K
C532
10uF/16V
C532
10uF/16V
C515
NC
C515
NC
TP506TP506
B
C
E
Q507
2N3904
B
C
E
Q507
2N3904
1
3 2
R551 5.1KR551 5.1K
R553
2K
R553
2K
L513
FB(600)
L513
FB(600)
12
R518
1K
R518
1K
+
-
U504B
TJM4558
+
-
U504B
TJM4558
5
6
7
8 4
B
C
E
Q510
2N3904
B
C
E
Q510
2N3904
1
3 2
C510 200pFC510 200pF
C526
102
C526
102
R510
100
R510
100
L508
FB(50)
L508
FB(50)
12
TP501TP501
R525
10K
R525
10K
B
C
E
Q512
2N3904
B
C
E
Q512
2N3904
1
3 2
Q509
BAT54S
Q509
BAT54S
3
2
1
R511
150
R511
150 C508
680pF
C508
680pF
R505
10K
R505
10K
+
CE502
100uF/10V
+
CE502
100uF/10V
1 2
R524
10
R524
10
B
C
E
Q513
2N3904
B
C
E
Q513
2N3904
1
3 2
R539
10K
R539
10K
B
C
E
Q508
2N3904
B
C
E
Q508
2N3904
1
3 2
R557 10KR557 10K
C530
100pF
C530
100pF
C522
ESD(15pF)
C522
ESD(15pF)
C513
680pF
C513
680pF
L514
10uH
L514
10uH
12
L502
FB(50)
L502
FB(50)
1 2
MPEG I/F
LCD I/F
3-45 3-46
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Page 45
5. CHARGE CIRCUIT DIAGRAM
06.CHARGE
LG & MALATA
Thursday, December 20, 2007
06.CHARGE
LG & MALATA
Thursday, December 20, 2007
06.CHARGE
LG & MALATA
Thursday, December 20, 2007
AD_U
P+
PWM
AD_I P-
VREF
5VA
BAT_OUT
GND
AD_PR
DC_IN
LCD_CTRL
STANDBY
AD_K
GND SP_MUTE
A_MUTE_SW
IR_OUT
STANDBY
LCD_CTRL
PWM
IR_OUT
SP_MUTE
AD_U
AD_I AD_PR
AD_KAD_KEY
A_MUTE_SW
VREF
IR
RED
GREEN
RED
GREEN
BAT_OUT
P-
P+
B-
BC
P+
IR
VREF1
B+
5VA
VREF1
5VA
5VA
5VA
5VA
5VA
4,7
BAT_OUT
4,5,7
GND
2,3,4,5,7
LCD_CTRL
7
STANDBY
4,5
AD_K
7
A_MUTE_SW
5
SP_MUTE
5
IR_OUT
2
IR 7
EB
C
3
2
9013
1
OFF-PAGE CONNECTION
POWER I/F
MPEG I/F
DEL R655 R656 R657(11.26)
R627 330 to 200(11.27)
R620 560 to 910(11.27)
C619
0.1uF
C619
0.1uF
C606
1000pF
C606
1000pF
R627
330R627 330
R622
R
R622
R
R653
51K
R653
51K
+
CE602
47uF/25V
+
CE602
47uF/25V
12
R630
2.4K
R630
2.4K
TP615TP615
C607
0.1uF
C607
0.1uF
R633
1KR633 1K
U604
R5460
U604
R5460
Dout
1
Cout
2
V-
3
VC
4
VDD
5
VSS
6
C615
0.1uF
C615
0.1uF
R628
51K
R628
51K
R635
1KR635 1K
C617
0.1uF
C617
0.1uF
R625
3.6K
R625
3.6K
R618
0.15 1W
R618
0.15 1W
+
CE609
10U/16V/NC
+
CE609
10U/16V/NC
12
B
C
E
Q601
2N3904
B
C
E
Q601
2N3904
1
3 2
R613
10K
R613
10K
C618
0.1uF
C618
0.1uF
TP616TP616
TP619TP619
TP612TP612
+
CE610
47U/10V
+
CE610
47U/10V
12
R615
1K
R615
1K
TP607TP607
C624
0.1uF
C624
0.1uF
B
C
E
Q603
2N3904
B
C
E
Q603
2N3904
1
3 2
+
CE604
220uF/16V
+
CE604
220uF/16V
12
TP611TP611
C625
104/NC
C625
104/NC
TP618TP618
+
CE607
100uF/10V
+
CE607
100uF/10V
12
R6421K R6421K
U605
SM9926K
U605
SM9926K
S1
1G12S23G24
D2
5D26D17D18
TP620TP620
C612
0.1uF
C612
0.1uF
+
CE605
100uF/25V
+
CE605
100uF/25V
12
R612
R
R612
R
R61651R616
51
C613
0.1uF
C613
0.1uF
C609
20pF
C609
20pF
R621
51K 1%
R621
51K 1%
R626
9.1K 1%R626 9.1K 1%
D607
BAT54S
D607
BAT54S
3
2
1
D603
LL4148
D603
LL4148
1 2
C626
104/NC
C626
104/NC
R617
0.15 1W
R617
0.15 1W
R619
0.15 1W
R619
0.15 1W
J601
CON3_2.0MM_DIP_B
J601
CON3_2.0MM_DIP_B
1
2
3
L601
FUSE(2A)
L601
FUSE(2A)
B
C
E
Q602
3906
B
C
E
Q602
3906
2 3
1
TP621TP621
LED603
LED3
LED603
LED3
1
2
3
R629
330
R629
330
C621
0.1uF
C621
0.1uF
U603
GT6312A
U603
GT6312A
RED
3
SAM_U
9
SAM_I
10
GREEN
4
SAM_T
11
OSC
14
SAM_V
12
DO
2
TC_SET
1
VDD
13
FB
15
PWM
5
GND
8
RST
7
PWMT
6
VREF
16
DC_CTL
17
CHG_CTL
18
CC_SET
19
SC_SET
20
U601
APM4953K
U601
APM4953K
S1
1
G1
2
S2
3
G2
4
D2
5
D2
6
D1
7
D1
8
U606
HT7150/NC
U606
HT7150/NC
VIN
2
GND
1
OUT
3
TP614TP614
U602
AZ431 0.5%
U602
AZ431 0.5%
R620
560R620 560
TP609TP609
C614
0.1uF
C614
0.1uF
+
CE608
47U/25V/NC
+
CE608
47U/25V/NC
12
R610
10K
R610
10K
R632
330
R632
330
C616
0.1uF
C616
0.1uF
R631
1K
R631
1K
R611
150K 1%
R611
150K 1%
C620
0.1uF
C620
0.1uF
+
CE606
100uF/25V
+
CE606
100uF/25V
12
R623
2K
R623
2K
C623
0.1uF
C623
0.1uF
C610
0.1uF
C610
0.1uF
D604
1N5822(NC)
D604
1N5822(NC)
1 2
POWERJACK
J604
POWERJACK
POWERJACK
J604
POWERJACK
1
3
2
4
5
R624
10K
R624
10K
L602
33UH
L602
33UH TP610TP610
C608
0.1uF
C608
0.1uF
R608
10K 1%
R608
10K 1%
C601
0.1uF
C601
0.1uF
R614
10
R614
10
D601
SS5822
D601
SS5822
1 2
D602
SS5822
D602
SS5822
1 2
R652
150K
R652
150K
D606
SS5822D606 SS5822
1 2
C622
0.1uF
C622
0.1uF
R604
51K
R604
51K
LGE Internal Use Only
3-47 3-48
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Page 46
6. LCD I/F CIRCUIT DIAGRAM
07.LCD I/F
LG & MALATA
Thursday, December 20, 2007
07.LCD I/F
LG & MALATA
Thursday, December 20, 2007
07.LCD I/F
LG & MALATA
Thursday, December 20, 2007
GND
BAT_OUT
LCD_CTRL
BAT_OUT
DVD_KEY6
DVD_KEY5
DVD_KEY3
DVD_KEY2
DVD_KEY1
AD_K
VCC_5V
DVD_SLEEP
DVD_SLEEP
AD_K
DVD_KEY5
DVD_KEY4
DVD_KEY1
DVD_KEY2
DVD_KEY6
DVD_KEY3
3.3V
3.3V
DVD_SLEEP
LCD_CTRL
VCOMO
89L_B
89L_G
89L_R
CPH1
STHL
OEH
OEV
CKV
STVL
SP_RSP_R+
SP_LSP_L+
LCD_3.3V
IR
KEY_PLAY
KEY_PLAY
DVD_KEY1
DVD_KEY2
DVD_KEY3
DVD_KEY4
DVD_KEY5
IR
5VA
LCD_3.3V
5VA
89L_R
89L_G
89L_B
CPH1
STHL
STVL
CKV
OEV
OEH
VCOMO
GND
GND
SP_RSP_R+
SP_LSP_L+
GND
2,3,4,5,6
BAT_OUT
4,5,6
LCD_CTRL
6
VCC_5V
4
DVD_SLEEP
2
AD_K
6
DVD_KEY1
2
DVD_KEY2
2
DVD_KEY3
2
DVD_KEY5
2
DVD_KEY4
2
DVD_KEY6
2
3.3V
2,3,4
VCOMO
2
89L_B
2
89L_G
2
89L_R
2
CPH1
2
STHL
2
OEH
2
OEV
2
CKV
2
STVL
2
SP_L-
5
SP_L+
5
SP_R-
5
SP_R+
5
LCD_3.3V
4
IR
6
5VA 4,6
TO SERVO
OFF-PAGE CONNECTION
PANEL T-CON I/F
NC(11.21)
L704 FB(600)L704 FB(600)
1 2
L720 FB(600)L720 FB(600)
1 2
L717 FB(600)L717 FB(600)
1 2
R704
NC
R704
NC
+
CE701
47uF/25V
+
CE701
47uF/25V
12
C710
33P
C710
33P
L714
FB(600)L714 FB(600)
1 2
R706
10K
R706
10K
L711
FB(600)L711 FB(600)
1 2
L709 FB(600)L709 FB(600)
1 2
R709 33R709 33
J701
CON12_0.8MM
J701
CON12_0.8MM
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
L707 FB(600)L707 FB(600)
1 2
R707 33R707 33
C706
33P
C706
33P
R713
33R713 33
L702
FB(600)L702 FB(600)
1 2
J704
CON20_0.8MM
J704
CON20_0.8MM
10
9
8
7
6
5
4
3
2
1
11
13
12
15
14
16
20
19
18
17
21
22
R711 33R711 33
L705
FB(600)L705 FB(600)
1 2
L721 FB(600)L721 FB(600)
1 2
C703
33P
C703
33P
L718
FB(600)L718 FB(600)
1 2
L716 FB(600)L716 FB(600)
1 2
R715 33R715 33
L713
FB(600)L713 FB(600)
1 2
R708 33R708 33
L701
FB(50)L701 FB(50)
1 2
R705
NC/10K
R705
NC/10K
C709
0.1uF
C709
0.1uF
L719
FB(600)L719 FB(600)
1 2
L703 FB(600)L703 FB(600)
1 2
L710 FB(600)L710 FB(600)
1 2
R710 33R710 33
L706
FB(600)L706 FB(600)
1 2
L708 FB(600)L708 FB(600)
1 2
C707
33P
C707
33P
R714
33R714 33
B
C
E
Q702
3904
B
C
E
Q702
3904
1
3 2
C701
33P
C701
33P
L715
FB(600)L715 FB(600)
1 2
L712 FB(600)L712 FB(600)
1 2
C705
33P
C705
33P
R712
33R712 33
L722
FB(600)L722 FB(600)
1 2
C702
33P
C702
33P
J703
CON12
J703
CON12
10
9
8
7
6
5
4
3
2
1
11
12
C704
33P
C704
33P
R716
33R716 33
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3-49 3-50
LGE Internal Use Only
Page 47
7. KEY MENU CIRCUIT DIAGRAM
08.MENU KEY
LG & MALATA
Thursday, October 25, 2007
08.MENU KEY
LG & MALATA
Thursday, October 25, 2007
08.MENU KEY
LG & MALATA
Thursday, October 25, 2007
SLEEP
DVD_KEY2
SLEEP
DVD_KEY6
AD_K
DVD_KEY5
DVD_KEY3
DVD_KEY1
AD_K KEY_PLAY
KEY_PLAY
DVD_KEY3
DVD_KEY6
DVD_KEY5
DVD_KEY2
DVD_KEY1
DVD_KEY
K812 DISPLAYK812 DISPLAY
1 2
R806 4.7K 1%R806 4.7K 1%
C808
ESD(15pF)
C808
ESD(15pF)
K803
DOWN
K803
DOWN
1 2
C802
ESD(15pF)
C802
ESD(15pF)
R801 1K 1%R801 1K 1%
R807
8.2K 1%R807 8.2K 1%
K804
ENTER
K804
ENTER
1 2
C801
ESD(15pF)
C801
ESD(15pF)
C803
ESD(15pF)
C803
ESD(15pF)
K805
MENU
K805
MENU
1 2
K806 POWERK806 POWER
1 2
R808 15K 1%R808 15K 1%
C804
ESD(15pF)
C804
ESD(15pF)
R809 39K 1%R809 39K 1%
K807
LCD_MODEK807 LCD_MODE
1 2
J801
CON10_1.0MM
J801
CON10_1.0MM
10
9
8
7
6
5
4
3
2
1
11
12
R802 1.2K 1%R802 1.2K 1%
K808
RIGHTK808 RIGHT
1 2
K813
RI-01CS0BM
K813
RI-01CS0BM
K801
SETUP
K801
SETUP
1 2
K809 LEFTK809 LEFT
1 2
R803 1.5K 1%R803 1.5K 1%
C805
ESD(15pF)
C805
ESD(15pF)
K810 COLORK810 COLOR
1 2
R804 2K 1%R804 2K 1%
K802
UP
K802
UP
1 2
C806
ESD(15pF)
C806
ESD(15pF)
K811 BRIGHTK811 BRIGHT
1 2
R805 2.7K 1%R805 2.7K 1%
C807
ESD(15pF)
C807
ESD(15pF)
LGE Internal Use Only
3-51 3-52
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Page 48
• CIRCUIT VOLTAGE CHART
MODE
PIN NO.
STOP PLAY
U201(MT1389LP)
1 2.01 2.21
2 2.01 2.23
3 2.01 2.22
4 2.01 2.19
5 2.04 2.62
6 2.04 2.62
7 1.87 1.87
8 3.33 3.33
9 0.92 0.94
10 0.87 0.92
11 0 0
12 2.02 2.02
13 1.41 1.41
14 0.59 0.59
15 0.12 0.18
16 0.12 0.18
17 3.33 2.51
18 3.33 3.33
19 3.33 3.33
20 1.41 1.94
21 1.41 1.32
22 0.01 3.26
23 19.96 3.27
24 1.41 1.40
25 1.38 1.31
26 3.33 3.33
27 0.02 0.01
28 0.02 0.01
29 4.87 3.33
30 0 0
31 0 0.01
32 1.87 1.87
33 3.31 3.32
34 2.92 2.92
35 2.92 2.92
36 3.30 0.24
37 0.01 1.45
38 0.01 1.01
39 0.01 1.22
40 3.31 3.31
41 3.32 3.32
42 0.01 0
43 3.32 3.33
44 5.06 5.02
45 0.97 1.16
46 1.17 1.02
47 0.85 1.08
48 1.19 1.11
49 0.81 1.11
50 3.33 3.33
51 0.65 0.97
52 0.71 0.88
53 0.84 1.09
54 1.87 1.87
55 2.55 2.39
56 0.63 1.05
57 1.27 1.38
58 1.26 1.53
59 1.02 1.87
60 0 0
MODE
PIN NO.
61 1.06 1.17
62 0.87 0
63 0.97 1.08
64 0.91 1.19
65 2.82 2.40
66 1.60 1.57
67 0 0.04
68 3.33 3.33
69 0.05 0.08
70 0.05 0.06
71 1.12 1.14
72 1.59 1.30
73 1.52 1.68
74 1.04 1.47
75 3.28 3.23
76 3.06 0
77 3.22 3.16
78 1.01 1.56
79 0 0
80 1.07 1.86
81 0.02 0.04
82 0 0.38
83 1.07 2.35
84 3.33 3.33
85 1.04 2.28
86 1.04 1.56
87 2.88 2.88
88 2.93 2.93
89 3.31 3.31
90 1.87 1.87
91 3.31 3.31
92 2.94 0
93 1.14 1.13
94 0.03 0.04
95 0.22 0
96 3.20 3.20
97 0.07 0.07
98 0.02 0.02
99 1.43 1.44
100 3.32 3.33
101 0.01 0.01
102 0 1.23
103 0 0
104 0.97 1.12
105 3.32 3.33
106 3.32 3.33
107 0.6 0.60
108 0.6 0.60
109 0.6 0.60
110 0 0
111 1.72 1.72
112 1.30 1.30
113 3.31 3.33
114 3.33 3.33
115 3.32 3.32
116 1.2 1.21
117 0 0
118 1.62 1.63
119 1.54 1.61
120 1.58 1.56
121 3.26 3.26
STOP PLAY
MODE
PIN NO.
122 3.26 3.26
123 1.87 1.86
124 0 0
125 0.99 0.99
126 0.99 0.99
127 2.41 1.64
128 2.41 1.59
STOP PLAY
U202(AZ1117H-ADJ)
1 0.63 0.63
2 1.89 1.89
3 3.34 3.34
4 1.89 1.89
U301(HY57V641620HGT)
1 3.33 3.33
2 1.08 1.13
3 3.33 3.33
4 1.03 1.10
5 1.17 1.01
600
7 1.52 1.08
8 0.53 1.11
9 3.33 3.33
10 0.50 0.98
11 0.46 0.88
12 0 0
13 1.29 1.09
14 3.33 3.33
15 2.82 2.40
16 3.28 3.23
17 3.08 2.94
18 3.23 3.16
19 0.01 0.01
20 1.01 1.60
21 1.07 1.85
22 0.02 0.04
23 0.21 0.37
24 1.06 2.37
25 1.04 2.27
26 1.04 1.58
27 3.33 3.33
28 0 0
29 1.05 1.48
30 1.52 0
31 1.59 0
32 1.12 1.12
33 0.05 0.06
34 0.05 0.08
35 0.01 0.04
36 0.01 0
37 3.33 3.33
38 1.60 1.60
39 2.82 2.40
40 0 0
41 0 0
42 0.92 1.19
43 3.33 3.33
44 0.99 1.07
45 0.89 1.12
46 0 0
47 1.07 1.17
48 1.03 1.38
MODE
PIN NO.
49 3.33 0
50 0 1.55
51 1.64 1.37
52 0 0
53 0.1 1.04
54 0 0
STOP PLAY
U302(AT26DF16/A)
1 3.30 0.16
2 0.01 1.47
3 3.33 3.33
400
5 0.01 0.95
6 0.01 1.20
7 3.33 3.33
8 3.33 3.33
U401(AM5898N)
102.40
2 1.29 1.28
3 1.26 1.27
4 0.01 0
511.92 11.89
611.94 11.91
711.94 11.91
802.21
9 2.43 2.57
10 5.07 4.95
11 1.40 1.38
12 1.40 1.57
13 0 0
14 2.42 3.27
15 2.42 1.55
16 0 0
17 2.44 2.35
18 2.44 2.42
19 0 0
20 2.44 2.31
21 2.44 2.55
22 1.40 1.38
23 1.40 1.40
24 5.06 4.95
25 0 0
26 0 0
27 0 0
28 11.94 11.88
29 7.51 4.78
30 1.30 1.25
31 1.31 1.30
32 3.14 3.14
33 0 3.26
34 1.41 1.41
35 0 0
36 0 0
U502(PT2303Y)
100
200
3 2.43 2.36
4 5.06 4.93
5 2.43 2.36
6 2.43 2.36
700
8 2.43 2.36
MODE
PIN NO.
9 2.41 2.36
10 2.41 2.35
11 2.43 2.37
12 2.43 2.37
13 5.06 4.93
14 2.43 2.37
15 0 0
16 0 0.03
STOP PLAY
U504(NJM4558M)
1 5.63 5.61
2 4.52 4.50
3 4.52 4.50
400
5 4.52 4.50
6 4.52 4.50
7 5.63 5.61
8 9.92 9.89
U601(APM4953K)
1 12.27 12.25
2 12.27 12.25
311.95 11.92
411.78 11.76
500
600
700
800
U602(AZ431AZ-A)
1 5.05 5.05
200
3 2.43 2.43
U603(GT6312)
1 5.06 5.01
2 5.05 5.01
3 4.95 4.91
400
500
600
7 5.05 5.01
800
900
10 0 0
11 2.62 2.62
12 5.06 5.03
13 0 5.03
14 4.62 4.58
15 0 0
16 0 2.51
17 5.05 5.0
18 4.97 4.93
19 5.02 4.98
20 0 5.01
U604(R5460B208AA)
1 0.04 0.04
2 0.04 0.04
300
400
500
600
U605(SM9926K)
100
MODE
PIN NO.
2 0.03 0.04
300
4 0.04 0.04
5 0.3 0.3
6 0.3 0.3
7 0.3 0.3
8 0.3 0.3
STOP PLAY
U901(UTC3308)
1 -0.29 -0.25
2 0.02 0.02
3 0.02 0.02
4 -9.49 -9.55
5 -0.29 -0.25
6 -0.29 -0.26
7 -0.29 -0.26
8 5.06 5.06
U902(78L05)
1 5.06 5.06
2 0.02 0.02
3 7.56 7.56
U903(RCR2561)
1 2.87 2.89
2 0.02 0.02
3 1.26 1.26
4 3.00 3.01
5 3.00 3.01
U904(MP2359)
1 4.10 4.12
2 -10.78 -10.78
3 -9.61 -9.61
4 -0.05 0
5 9.91 9.88
6 -0.04 -0.04
Q201
Emitter 0 0
Collector 0.11 0.11
Base 0.66 0.66
Q202
Emitter 0 0
Collector 3.32 3.33
Base 0.11 0.11
Q402
Source 5.07 5.03
Drain 5.07 5.01
Gate 0 0
Q407
Emitter 5.07 4.966
Collector 0 0
Base 6.52 6.51
Q408
Source 11.92 11.88
Drain 3.42 3.42
Gate 6.41 6.35
Q409
Emitter 0 0
Collector 1.32 1.29
Base 0 0
Q410
Emitter 11.94 11.88
Collector 5.06 5.07
MODE
PIN NO.
Base 7.60 4.87
STOP PLAY
Q411
Emitter 3.32 3.34
Collector 0 0.06
Base 3.32 3.33
Q414
Emitter 3.33 3.17
Collector 0 2.16
Base 3.33 2.51
Q415
Emitter 0 0
Collector 0 0
Base 0.7 0.7
Q416
Emitter 0 0
Collector 5.06 0.03
Base 0 0.68
Q417
Emitter 0 0
Collector 0 0
Base 0 3.24
Q418
Emitter 0 0
Collector 0 0.18
Base 5.01 0.03
Q501
Emitter 0 0
Collector 0 0
Base 0 0
Q503
Emitter 0 0
Collector 0 0
Base 0 0
Q507
Emitter 0 0
Collector 1.58 1.46
Base 0 0
Q509
Emitter 5.06 4.94
Collector 0.97 1.12
Base 0 0
Q510
Emitter 0 0
Collector 2.3 1.58
Base 0 0
Q511
Emitter 0 0
Collector 0 0
Base 0.61 0.61
Q513
Emitter 0 0
Collector 0 0.03
Base 0.73 0.73
Q514
Emitter 11.95 11.92
Collector 11.92 11.89
Base 11.2 11.17
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3-53 3-54
LGE Internal Use Only
Page 49
MODE
PIN NO.
STOP PLAY
Q515
Emitter 5.06 4.96
Collector 0.5 0.48
Base 0 0
Q601
Emitter 12.26 12.25
Collector 12.26 12.26
Base 12.26 12.25
Q602
Emitter 12.26 12.25
Collector 0 0
Base 12.26 12.25
Q603
Emitter 0 0
Collector 12.26 12.25
Base 0 0
Q702
Emitter 0 0
Collector 0 0
Base 0 -1.92
Q1(5448)
Emitter 5.59 5.58
Collector 0 0
Base 0 0
Q2(5448)
Emitter 0 0
Collector 0 0
Base 0.70 0.70
Q1(5451)
Emitter 0.63 0.63
Collector 5 5
Base 1.33 1.33
Q2(5451)
Emitter 0.63 0.63
Collector 5 5
Base 1.32 1.32
Q3(5451)
Emitter 0.62 0.62
Collector 5 5
Base 1.32 1.32
CE201
+ 3.33 3.33
-00
CE202
+ 3.33 3.33
-00
CE203
+ 3.33 3.33
-00
CE204
+ 2.00 2.00
-00
CE205
+ 3.33 3.33
-00
MODE
PIN NO.
STOP PLAY
CE206
+ 1.41 1.40
-00
CE207
+ 3.33 3.32
-00
CE208
+ 1.87 1.87
-00
CE209
+ 3.33 3.33
-00
CE211
+ 3.33 3.32
-00
CE212
+ 3.26 3.26
-00
CE213
+ 3.33 3.33
-00
CE301
+ 3.33 3.33
-00
CE402
+ 5.07 4.98
-00
CE403
+ 5.07 5.00
-00
CE406
+ 5.06 5.00
-00
CE410
+ 3.39 3.38
-00
CE411
+11.80 11.71
-00
CE412
+ 5.06 5.04
-00
CE413
+11.80 11.71
-00
CE415
+ 3.37 3.36
-00
CE416
+ 5.15 4.99
-00
CE417
+ 3.34 3.33
- 3.34 3.33
CE418
MODE
PIN NO.
+ 3.34 3.33
- 3.34 3.33
STOP PLAY
CE501
+ 2.45 2.40
-00
CE502
+ 2.45 2.40
-00
CE503
+ 5.54 5.51
-00
CE504
+ 2.41 2.36
-00
CE505
+ 5.54 5.50
-00
CE506
+ 5.06 5.00
-00
CE507
+11.78 11.71
-00
CE508
+ 4.04 4.02
- 1.63 1.63
CE509
+ 4.05 4.04
- 1.63 1.63
CE510
+ 1.65 1.50
-00
CE511
+ 5.55 5.50
-00
CE512
+ 5.55 5.50
-00
CE513
+ 2.43 2.39
-00
CE514
+ 1.89 1.80
-00
CE515
+ 2.43 2.40
-00
CE516
+ 4.45 4.41
-00
CE602
+ 12.13 12.08
-00
CE604
+ 10.40 10.40
MODE
PIN NO.
-00
STOP PLAY
CE605
+ 12.14 12.08
-00
CE606
+11.80 11.71
-00
CE607
+ 5.06 5.03
-00
CE610
+ 2.50 2.50
-00
CE701
+11.79 11.74
-00
LGE Internal Use Only
3-55 3-56
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Page 50
PRINTED CIRCUIT BOARD DIAGRAMS
1. MAIN P.C.BOARD
(TOP VIEW)
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3-57 3-58
LGE Internal Use Only
Page 51
MAIN P.C.BOARD
(BOTTOM VIEW)
LGE Internal Use Only
3-59 3-60
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Page 52
2. KEY MENU P.C.BOARD
(TOP VIEW)
(BOTTOM VIEW)
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3-61 3-62
LGE Internal Use Only
Page 53
MEMO MEMO
LGE Internal Use Only
3-63 3-64
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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