LG CF-21Q20EH Service Manual page 28

PRINTED CIRCUIT BOARD
MAIN
BLOCK DIAGRAM
KEY(4) H/P AV2
X01
62 61
20.25MHz
59
IC03
IC03
SCL IR
KEY
60
EEPROM
SDA
IC01
IC01
6
HIC181 HIC181 VCD/MICOM
TILT
TILT H-IC
VCT3804
HIC 01 HIC 01
GAME MODULE
EYE FB RGN-IN
YUV-IN
1
GAME-A/V
27
PIP ASSY
*OPTION
ICP01
ICP01
SDA9489
S-woofer ASSY
RF AV1 AV2 DVDIN GAME
*OPTION
SOUND IN/OUT
H/P
PIP-CVBS
ICN02 ICN02
MPX ASSY
IF ASSY
H/P AMP
IC141
TDA2822
H/P
TDA9885
CVBS-P
ICN03 ICN03
K9253M
VIDEO-S/W
K7257M GAME-A/V
CXA2040A
SIF
IF CVBS 5V
TO IF SIF
RF-CVBS
TUNER
YUV-IN
5V 9V
5V
33V V-O1
S-WOOFER
*OPTION
SK201
SK202
TUNER
PHONE
DVD,S-W
FRONT-AV H/P AMP
TDA2822
IC05
IC05
5V 5V
5V 33CV
IC601 IC601
SOUND
54 3 15,45
AMP
LA4282 LA4282
ST-3.3 ST-5V VCC
IC901 IC901
VIDEO AMP
IK
SDA5109 CPT
RGB
36
E/ W
VCC
YC-IN CVBS-IN H-OUT VA VB
3.3V
CPT ASSY
21 25 24 35 34 IC302
IC302
E/W
KIA4558
IC06 IC06
IC301 IC301 Q401 Q401
33CV
V-OUT H-OUT
LA7840 KTD2499
VS
FBT FBT
H-DRIVE
200V
IC05 IC05
-14V
7805 9V
14V H/V
SCREEN
FOCUS
S-W
IC901,IC01/03N
ICN01 ICN01
B+ 28V
IC01,ST5V
SOUND-PRO SOUND-OUT
9V
MSP3400D
110V
5V IC853 IC853
/3460
78A09
IC851 IC851
IC855 IC855
P403A
78L05
35V
78R05
VM VCC
TILT
8V 12V H.VCC B+
AV1 30V AUDIO B+ AC IN
(POWER) IC801 STR-F6654/F6656
IC801
COMPONENT LOCATION GUIDE
C01 ..........B2 C501 ........C3 D408 ........E5 J18 ...........B2 J105 .........D1 JP44.........D5
C02 ..........B2 C503 ........B3 D410 ........G3 J19 ...........B1 J106 .........D4 JP45.........D5
C03 ..........B2 C504 ........B3 D412 ........E5 J20 ...........B1 J108 .........E4 JP46.........E5
C04 ..........B2 C507 ........C5 D501 ........C4 J21 ...........A4 J109 .........D3 JP47.........E5
C05 ..........B2 C510 ........C3 D503 ........C2 J22 ...........B1 J110 .........D5 JP48.........E5
C06 ..........B2 C511 ........C5 D505 ........B2 J23 ...........B2 J111 .........A1 JP49.........E5
C07 ..........B2 C512 ........C3 D506 ........B1 J24 ...........B5 J112 .........E4 JP50.........E1
C09 ..........B2 C516 ........C3 D601 ........B4 J25 ...........B5 J113 .........E4 JP51.........E1
C10 ..........B2 C517 ........C3 D602 ........B4 J26 ...........A4 J114 .........E4 JP52.........E1
C11 ..........A1 C518 ........C3 D802.........F3 J27 ...........B5 J116 .........E4 JP53.........E4
C12 ..........A1 C520 ........C2 D803.........F3 J28 ...........A4 J117 .........E3 JP54 .........F4
C13 ..........B3 C559 ........C2 D804 ........G3 J29 ...........A4 J118 .........E3 JP55 .........F4
C14 ..........B3 C561 ........C2 D850 ........D2 J30 ...........B2 J119 .........E1 JP56 .........F4
C15 ..........B2 C562 ........C1 D855 ........D1 J31 ...........A3 J120 .........E5 JP57 .........F1
C16 ..........B3 C563 ........B1 D857 ........E2 J32 ...........B3 J121 .........E1 JP58 .........F5
C17 ..........B3 C564 ........B1 D858 ........E2 J33 ...........B5 J122 .........E5 JP59 .........F1
C18 ..........B3 C565 ........B1 D861 ........E3 J34 ...........C4 J123 .........E5 JP60 .........F5
C19 ..........B3 C568 ........B1 D862 ........G2 J35 ...........C1 J124 .........E2 JP61 .........F4
C22 ..........C3 C569 ........B1 D863 ........C2 J36 ...........B5 J125 .........F5 JP62 .........F4
C23 ..........C3 C570 ........B3 D864 ........C2 J38 ...........C2 J126 .........F5 JP63 .........F2
C24 ..........B2 C571 ........B3 D865 ........C2 J39 ...........A4 J127 .........F2 JP64 ........G1
C25 ..........B2 C601 ........A2 D866.........F2 J40 ...........B3 J128 .........F3 JP65 ........G1
C26 ..........B2 C602 ........A2 D867 ........G2 J41 ...........C3 J129 .........F3 JP66 ........G2
C27 ..........C2 C603 ........A3 D868.........F2 J42 ...........C4 J130 .........F2 JW2A........F5
C28 ..........B2 C604 ........A2 DB801......G2 J43 ...........C2 J131 .........F3 L01 ...........B3
C29 ..........B2 C605 ........A2 F851.........D2 J44 ...........C2 J132.........G1 L02 ...........B3
C37 ..........C5 C606 ........A3 F853.........D2 J45 ...........C4 J133.........G1 L03...........C2
C38 ..........C5 C607 ........A2 F854.........E3 J46 ...........C3 J134.........G3 L05 ...........A1
C39 ..........B4 C608 ........A1 F855.........E2 J47 ...........C2 J135.........G2 L07 ...........B2
C40 ..........E1 C609 ........A2 F801A ......G2 J48 ...........B5 J136.........G1 L08...........C4
C42 ..........D1 C610 ........A3
F801B ......G1 J49 ...........C4 J137 .........D4 L09 ...........B2
C71 ..........A3 C611 ........A3 FB01 ........C2 J50 ...........C3
J138 .........D5 L71 ...........A3
C72 ..........A3 C612 ........A3 FB201 ......B5 J51 ...........B1 J139 .........A4 L101 .........A4
C101 ........A4 C613 ........A1 FB221 ......E5 J52 ...........C3 J140.........G3 L102 .........A5
C102 ........A5 C614 ........B4 FB241 ......B1 J53 ...........C3 J142 .........C2 L121 .........A4
C103 ........B5 C615 ........A3 FB401 ......G4 J54 ...........A3 J143 .........C4 L181 .........B4
C107 ........A5 C616 ........A1 FB801.......F2 J55 ...........B5 JK201.......C5 L243 .........B1
C108 ........A5 C802.........F1 FB802.......F2 J56 ...........C2 JK202.......D5 L244 .........B1
C109 ........A4 C804 ........G2 FB803.......F2 J57 ...........C4 JK203.......C1 L401 .........F3
C110 ........A4 C805.........F2 FB852 ......D2 J58 ...........C4 JP1...........A3 L402 .........F4
C123 ........B5 C806.........F2 FB853 ......D2 J59 ...........C4 JP2...........A2 L501.........C3
C124 ........B5 C807.........F3 FB855 ......D3 J60 ...........C4 JP3...........A1 L851.........D2
C127 ........A4 C808.........F3 FR401 ......E5 J61 ...........B4 JP4...........A3 L853.........D3
C128 ........A4 C809 ........G2 FR402 ......E5 J62 ...........C5 JP5...........A2 LD01.........F1
C181 ........B3 C810 ........G3 FR403 ......E5 J63 ...........C4 JP6...........B1 P01...........A1
C182 ........B4 C811 ........G3 FR406 ......E5 J64 ...........B2 JP7...........B3 P101.........A5
C183 ........B3 C812.........F3 FR413 ......E4 J65 ...........C4 JP8...........B3 P102.........A5
C184 ........B3 C813 ........G2 HIC01.......B4 J66 ...........C4 JP9...........B3 P103.........E5
C201 ........D5 C814 ........E1 HIC181.....B4 J69 ...........C2 JP10.........B1 P181.........B3
C208 ........D5 C815.........F3 IC01 .........B2 J70 ...........B2 JP11.........B1 P601.........A1
C209 ........D5 C816.........F2 IC02 .........A3 J71 ...........D2 JP12.........B1 P602.........A2
C302 ........D4 C817 ........G2 IC03 .........A1 J72 ...........C5 JP13.........B1 P01A ........F1
C303 ........D4 C853 ........D2 IC05 .........B3 J73 ...........C5 JP14.........B1 P02A ........F1
C304 ........D4 C854 ........E1 IC06 .........B3 J74 ...........D5 JP15.........B1 P03A ........C1
C305 ........D3 C855 ........D1 IC07 .........B2 J75 ...........D2 JP16.........C1 P04A ........C1
C306 ........E4 C856 ........E2 IC301 .......D4 J76 ...........C2 JP17.........C1 P05A ........C1
C307 ........D4 C857 ........E2 IC302 .......D4 J77 ...........C2 JP18.........C1 P06A ........B1
C308 ........D4 C858 ........D2 IC601 .......A2 J79 ...........C3 JP19.........C1 P08A ........C1
C309 ........D4 C859 ........D2 IC801 .......G2 J81 ...........C1 JP20.........C1 P09A ........C4
C310 ........E4 C860 ........D2 IC802........F3 J82 ...........D2 JP21.........C5 P09B ........C1
C311 ........E4 C861 ........D2 IC803........F3 J83 ...........C3 JP22.........C5 P141A ......A4
C401 ........E4 C863 ........D2 IC851 .......D1 J84 ...........D1 JP23.........C1 P201A ......D5
C402 ........G4 C865 ........D3 IC853 .......D2 J85 ...........D2 JP24.........C2 P202A ......C5
C403 ........G4 C866 ........E3 IC855 .......E2 J86 ...........D4 JP25.........C5 P203A ......C5
C404 ........G4 C867 ........D3 IC856 .......D3 J87 ...........D2 JP26.........C5 P401A ......F4
C405.........F4 C868 ........D2 J1 .............A5 J88 ...........D3 JP27.........C2 P401B ......F4
C406 ........G4 C870 ........D3 J2 .............A1 J89 ...........D2 JP28.........C1 P401C ......F4
C407 ........G3 C871 ........D3 J3 .............A1 J90 ...........D4 JP29.........C1 P401D ......F4
C408.........F3 C872 ........D3 J4 .............A1 J91 ...........D3 JP30.........C5 P402A ......F5
C409.........F4 C873 ........E3 J5 .............A3 J92 ...........D3 JP31.........C1 P402B ......F5
C410.........F4 C874 ........D2 J6 .............A5 J93 ...........D1 JP32.........C1 P403A ......E5
C411.........F4
C876 ........D3 J7 .............A5 J94 ...........D1 JP33.........C1 P551A ......B4
C412 ........E5 D01 ..........B2 J8 .............A1
J95 ...........C5 JP34.........C5 P552A ......C4
C413 ........E5 D101 ........A4 J9 .............B2 J96 ...........E1 JP35.........D5
P605A ......A3
C414 ........E5 D301 ........D4 J10 ...........A2 J97 ...........D2 JP36.........D4 P651A ......A1
C415 ........E4 D302 ........D4 J11 ...........A1 J98 ...........D5 JP37.........D2 P653A ......A1
C416 ........E5 D401 ........G4 J12 ...........A1 J99 ...........E1 JP38.........D2 P801A......G1
C417 ........E4 D402 ........G4 J13 ...........A1 J100 .........D4 JP39.........D1 P801B......G1
C419 ........E4 D403.........F4 J14 ...........A1 J101 .........B2 JP40.........D3 P802A ......E1
C420 ........E5 D404 ........E5 J15 ...........A1 J102 .........D4 JP41.........D5 P802B ......E1
C421 ........E5 D405.........F5 J16 ...........A1 J103 .........D5 JP42.........D5 P803A ......F1
C422 ........E5 D406 ........E4 J17 ...........A2 J104 .........D1 JP43.........D5 P803B ......F1
PIP
L
R
CONTROL(21Q20)
Q01 ..........D1 R201 ........D5 R542 ........C2 TP12 ........B4
Q02 ..........E1 R202 ........E5 R543 ........C2 TP13 ........B3
Q03 ..........B2 R203 ........C5 R544 ........C1 TP14 ........B2
Q04 ..........B2 R206 ........D5 R545 ........C2 TP15 ........B2
Q05 ..........B1 R210 ........E5 R546 ........B1 TP16 ........B2
Q201 ........D5 R211 ........E5 R547 ........C1 TU101 ......A5
Q301 ........D4 R212 ........D5 R548 ........C1 TU121 ......B4
Q303 ........D4 R226 ........D5 R549 ........C2 VD801......G1
Q401........G4 R227 ........C5 R550 ........B1 X01...........B2
Q402........G3 R241 ........C1 R551 ........C2 ZD01 ........A1
Q403........G3 R242 ........C1 R552 ........C1 ZD02 ........A1
Q501 ........C5 R301 ........D4 R553 ........B2 ZD03 ........A1
Q503 ........C3 R302 ........D4 R554 ........B1 ZD101 ......A4
Q505 ........C2 R304 ........D4 R555 ........B2 ZD121 ......B5
Q506 ........C2 R305 ........D4 R556 ........B1 ZD301 ......D3
Q507 ........C2 R306 ........D4 R557 ........B1 ZD302 ......D4
Q508 ........B2 R307 ........D4 R558 ........B1 ZD303 ......D4
Q509 ........B1 R308 ........C4 R559 ........C3 ZD401 ......D5
Q601 ........B4 R309 ........D4 R560 ........C2 ZD501 ......C3
Q853 ........E1 R310 ........D4 R570 ........C5 ZD851 ......D2
Q854 ........E4 R311 ........E4 R571 ........C5
Q855 ........D3 R312 ........E4 R601 ........A2
Q856 ........C3 R313 ........E4 R602 ........B3
Q857 ........D1 R314 ........E4 R603 ........B3
WIRING DIAGRAM
R01 ..........B2 R315 ........D5 R604 ........B3
R02 ..........B2 R316 ........D4 R605 ........B3
R03 ..........B2 R317 ........D4 R606 ........A2
R04 ..........B2 R319 ........D4 R607 ........A2
R05 ..........B2 R320 ........E4 R608 ........A2
R06 ..........B2 R321 ........E4 R609 ........B3
R07 ..........B2 R322 ........D4 R610 ........B4
R08 ..........B2 R323 ........D4 R611 ........B4
R09 ..........B2 R324 ........D4 R612 ........B4
R10 ..........A1 R325 ........E4
R801 ........G2
R11 ..........A1 R326 ........E4 R802.........F2
R12 ..........B3 R327 ........D4 R803.........F3
R14 ..........C2 R328 ........D4 R804 ........G3
R15 ..........A2 R330 ........D4 R805 ........G2
R16 ..........A1 R331 ........D4 R806 ........G3
R17 ..........B2 R401 ........C3 R807 ........G3
R18 ..........B3 R402 ........G3 R808.........F3
R19 ..........B3 R403 ........G4 R809 ........G2
R20 ..........B3 R404 ........G3 R820.........F3
R21 ..........B1 R405.........F3 R821.........F3
R22 ..........B1 R408 ........E4 R852 ........D1
R23 ..........A3 R409.........F4 R853 ........D2
R24 ..........B2 R410.........F4 R858 ........D2
R25 ..........B1 R411 ........G4 R860 ........D2
R31 ..........C1 R413 ........G4 R861 ........D3
R32 ..........B1 R414 ........E5 R862.........F3
R35 ..........D1 R415 ........D5 R863 ........E3
R36 ..........D1 R416 ........D4 R864 ........D3
R37 ..........C1 R417 ........D4 R865 ........D3
R39 ..........C4 R419 ........E4 R866 ........D3
R40 ..........B1 R421 ........E5 R867 ........C3
R42 ..........A1 R422 ........E5 R868 ........D3
R43 ..........G1 R423 ........E3 R869 ........D1
R44 ..........D1 R503 ........C5 R870 ........D1
R45...........F1 R504 ........C5 RL801 ......E2
R46 ..........D1 R510 ........C5 SW01 .......E1
R47 ..........D1 R511 ........C5 SW02 .......E1
R48 ..........D1 R512 ........C5 SW03 .......D1
R49 ..........D1 R513 ........C5 SW04 .......D1
R50 ..........D1 R515 ........C5 SW05 .......D1
R51 ..........B3 R517 ........C3 SW06 .......D1
R71 ..........A3 R518 ........C3 SW801.....G1
R72 ..........A3 R519 ........C3 T401 ........G4
R73 ..........A3 R520 ........C3 T402 .........F5
R76 ..........A4 R523 ........C3 T801 .........F1
R77 ..........A4 R524 ........C4 T802 .........F3
R78 ..........A3 R525 ........C3 TH801 ......E2
R79 ..........A3 R526 ........C4 TP1 ..........A3
R100 ........A4 R527 ........C3 TP2 ..........A3
R101 ........A4 R528 ........C3 TP3 ..........A3
R102 ........A4
R529 ........C3 TP4 ..........A3
R103 ........A5 R530 ........C3 TP5 ..........A4
R105 ........A4 R531 ........C2 TP6 ..........A5
R121 ........B5 R532 ........C2 TP7 ..........A5
R122 ........B5 R533 ........C2 TP8 ..........B4
"
R123 ........B5 R534 ........C1 TP9 ..........B3
R124 ........B4 R537 ........C2 TP10 ........B4
R181 ........B4 R541 ........C2 TP11 ........B4
MPX
P/N: 3854VA0087A-S1(2/2)
DATE: 2001.03.19
2
"C"
1
"A"
1
"B"
"
IF