LG CE-29H46ET Service Manual page 26

WIRING DIAGRAM
CABINET
SPEAKER CONNECTOR
D-COIL
CPT PWB
P03B
PP801
PP803
P05B
PP802
P802
P602 P801
P05A P03A
P601
P01
P181
PV01
P401
JW1A
P402A
MAIN PWB ASSY
TROUBLESHOOTING GUIDE
C804
pin4 F(P)801, SW(P)801, T1111,
T801, R802, DB801.
18V
T802, R809, D802.
F854, D861, R405.
ICP(V)01.
37~39 12
ICP(V)01.
ICP(V)01. CPT PCB ASSY. ICP(V)01, Q124
BLOCK DIAGRAM
PRE-
AMP.
S-Video
AV3-IN
H/P
TILT
IN
HIC181
R L IR
V3
A3
28 S-VIDEO SEL.
(R,L)
Y/V3 C
SDA
TVTXT(MICOM + TEXT)
SCL
SDA5555/5521 IC01
EEPROM
CPT DRIVE AMP.
TXT RGB
24C16
TDA6101Q * 3 38/39/40/41
AUDIO AMP
IC02
LA4282
IC901/2/3
IC601
SDA0
RGB
SCL0
OUT
34/37/38/39 41/42/43/44
VM & RGB TXT RGB
3 SCL
VCD PROCESSOR
4 VDP3120
SDA
EXT.RGB_IN Y/C IN & V1/2/3/4
45/46/47/48 60/61/62/63/64
RGB
PIP IC A/V S/W
SDA0
SCL0 SDA9489 CXA2040Q
EXT.
V2(MNT) OUT
RGB
K3958M / K6263K(w/M)
RF OUT V1(TV) OUT
IF1
5V
SAW I
33V OTHER L (M)
IF2
L9654M
TUNER
27 7 6 14
SAW ≤
L/L S/W V_SW
ViF
28
SiF2
SDA VIF/SIF
SCL K9350M / K9253M(w/M) IC101 TDA4470
1
SAW ± SiF1 S_SW V_SW
AGC 2 23 3 13
5V
AM
3V
pin 32 of IC01.
Q05, IC851, IC802(3), IC856.
3.3V 0V
ICP(V)01.
IC01, FR403, FR413, IC852(3), IC854(5), FR406,
D405, D406, IC301, D408, D858, Q856.
ICP(V)01.
ICP(V)01.
33V
(OPTION)
D850, L853, T402. Q401, Q402, T401.
'
NO PIP
9
Check/Replace ICP101.
F854, D861, R104, ZD101. 7
Check I 2
Check CP131.
12 L102
ICP(V)01
15
Check RP108, 109, 110, 112, 114,
IC01
ICP(V)01, Q124.
Check/Replace IC01, IC02.
Check I 2 C BUS.
AC_IN
EYE
110~240V
LOCAL KEY
SENSOR
ST-BY 5V
ST_BY(2W)
3.3 V REG 5V REG
POWER
IC04 IC851
(OPTION)
13V
9V REG
9V
IC852/3
CVBS
12
POWER CTL.
5V REG
5V
STR-F6656
IC854/5
IC801
59
SOUND Vcc
50
H-out
TUNER 33V
Va 31
B+
32
EW
PIP or VCD
BOARD
V_DY
VERTICAL AMP
VA
RF/V1/V2/V3
LA7845/40 IC301
13V
SOUND BOARD
ICN02 KIA4558 14V -14V
TDA2822M
HP Amp.
HV
38 37 24/25 21/22
A3_IN
FOCUS
Sound Processor
HDT
V/M
47 MSP3410D/3460G ICN01
A1_OUT A1_IN A2_OUT A2_IN FBT
44 30 31 42 41 27 28 40 39 H-OUT
T402
24 SCREEN
FM
DYNAMIC
25 LA7016
210V
AM FOCUS
D-FOCUS
GAME
1 3 2 6 1 3 2 6
BOARD
SOUND
R(0) L(0) R(I) L(I) R(0) L(0) R(I) L(I)
H / T
AV1_SCART/PHONE AV2_SCART/PHONE
FM
pin 10 of IC601(SOUND AMP).
F851, FB853, D850. ICN01.
* AM Sound(for FRENCH)
IC601.
8
ICN01.
0V 5V
Check the Waveform
at pin 44 of ICN01.
IC601, QN01~02, P605(6)A. Q601, IC01.
NORMAL
Check/Replace Check the voltage
XN01, ICN01. at pin 3 of IC101.
XN01, ICN01.
Z102, Z103, IC101.
Z102, IC101.
Is there video signal at
No pin 13 of ICP101?
Yes
C Bus.
Is there video signal at
Yes
pin 28 of ICP102?
No
Abnormal Check pins15~18
of ICP102.
Check/Replace ICP102.
Check I 2 C BUS.
Normal
Abnormal
Check pins45~48
of ICP01.
Normal
CP17~19.
Check/Replace
ICP01.
FR403, FR413, D405, D406. ICP(V)01.
ICP(V)01. IC301, D301.
ICP(V)01.
ICP(V)01. IC302.
R408.
FR402, D404, IC302.
Q302, Q303. D401, D402, C405.
ICN01.
ICN01. 1, 3 ICN02.
P605(6)A, ICN02.
NO
Service Sheet of MC-007A
P/N: 3854VA0071A-S2
2000.06.15
at pin 44 of ICP(V)01.
3V
P502A.
at pin 12 of IC01.
QP(QV)02, ICP(V)01. at pin 41~43 of ICP(V)01.
ICP(V)01.
'
P901.
Q2902~2910, VM COIL.
ICP(V)01, QP(V)04~06.