FUNAI LH850-M19, Service Manual

Page: 48 / 71

10-16
D625
J276
D302
P-ON-H2
28
29
R318
C315
C316
C27
TU10
CN302
J291
J292
P-ON+5V
C313
C314
C317
C320
J357
J279
J287
J288
GND
GND
SIF
P
SIF N
1
2
29
28
C21 C22
R13
R15 R16
R18
R19 R20
R22
R23
R24
R28 C12
C15
J318
J359
CN303
J281
J289
J313
J314
J315
A-MUTE
SCART-OUT-SEL
AMP-R
GND
TU CVBS
TU CVBS
2
1
28
R405
R406 R410 R411
R412
R413
R808
R816
R823
C406
C407
C416
R461
R464
C815
C817
C823
C445
J327
J333
J334
CN404
R456
R457
C808
C422
J274
J275
J286
SCART
CVBS
OUT
Q801
Q802
Q803
J309
J316
J317
GND
GND
VDACOUT1
AMP-L
GND
CVBS
VN
GND
CVBS
V
2
1
29
29
28
R801
R819
R820
R824
R825
C404
C435
C438
C824
C441
C442
R402
J329
CN401
CN802
R436 R438
J355
R441
C415
R452
R453
R454
C419
R455
R458
R459
R476
R477
D402
D403
D404 D405
D414
D416
D418
D419
D420
D421
D422
D423
D424
J400 GND
R157
J278
CN152
J298
L401
L402
L403
D151
JK401
JK404 JK405
JK406
CVBS
SLOW
ALL+3.3V
SPDIF
2
1
6
1
R415
R419
R437
R439
C401
R440
C414
C418
C802
C420
C423
C424
C426
C436
C437
C439
C822
R478
R479
C440
C443
C444
R481
R482
R483
R484
C448
R485
C449
R486
R487
C450
C451
R156
C151
C152
C154
C155
2
1
J1024
JK413
R442
R445 R449
D406
D407 D408 D409
D410
D411 D425
D426
BC401
P
b
R444
R446
R448
R450
C427
C428 C429
C434 C446
C447
C153
6
R421
R425
R427
R429
R431
R451
R463
D401
JK402 JK403
SLOW
SW-IN
J358
R403
R422
R423
R424
R426
R430
R432
C405
R443
C408
C409
C410
C411
C412
C425
R480
R417
R416
JK408
JK409
JK411
R433
C804
C805
C807
R691
D672
L406
L407
L408
J300
ALL+3.3V
J308
JK407
R804
C413
C810
J352
C806
C812
C814
R676
R690
D801
D802
D803
D805
D806
IC801
D502
J305
J311
GND
D670
R803
R807
R809
R810
R811
R812
R813
R814
R815
R817
R818
R831
C809
C811
C813
C819
C820
C825
J1025
J1028
J335
J344
J348
C417
R653
R656
C430
C629
R471
C630
C640
D639
Q405
Q406
D506
Q609
Q804
J304
J310
J1017
GND
PON+11V
GND
R408
R826
R827
R829
R830
C803
R469
C431
R470
R472
C506
J325
J332
J350
J351
Q10
C623
C641
C647
Q305
L11
R11
R12
C318
J271
J297
D301
Q404
D503
L405
Q616
C14
C16
J312
GND
GND
GND
GND
P-ON-H1
PROTECT
3
P-ON-H2
C24
R467
R468
C432
C433
R473
R474
R475
C644
R683 R687
R695
R314
R319
R320
R321
C503
C504
C505
R10
R21
C11
C13
C17
J362
Q302
R309
J233
C312
J268
VCOM-PWM
PROTECT
R301
R306 C304
R652
R660
C639
Q301
D642
D644
D651
R305
J231
C301
J259
J260
D508
D509
D511
Q615
GND
PANEL+13V
PANEL-6.8V
P-ON+3.3V
PROTECT 1
R648
R666
R667
R668
C636
C643
R681
R302
R303
R304
C303
IC301
R806
R1117
J340
J341
J343
J354
J356
R644
C626
3 6 6 R
R670
D643
J256
J258
R1033
R1034
J261
J265
J270
J273
D501
Q614
J302
J303
J1015
GND
+3.5V
P-ON/OFF
+15V
ALL+3.3V
ALL+3.3V
+33V
ON/OFF
H1
1.1V
ON/OFF H1
C638
R694
JS611
JS612
R805
J337
J338
J339
J342
J346
J349
C614
R675
R697
D804
D620
D650
D671
J1016
GND
GND
GND
P-ON+3.3V
+15V
POW
for
J263
R802
R677
R678 C646
R698
R501
R651
R661
C632
C637
R686
D613
D618
D635
D640
D641
D648
D673
J262
Q606
Q610
Q611
P-ON/OFF
Q617
J410
R404
R428
R628
R649
R657
C642
C648
R688
R401
JK410
J328
J330
R636
R637
R447
R659
C621
R682
D413
D427
D626
D627
D628
D633
D645
J299
Q603
J301
J306
GND
SP-GND
R665
Q608
R625
R626
R627
R629
DET
SW105
VOL.UP
VOL.DOWN SW106
R106
CN101B
R110
R111
R114
R115
R116
C109
D103
D104
R108
CN101A
CN101
C103
C104
1
1
6
1
6
J902 RCV
Q102
SW102 CH.UP
SW103
CH.DOWN
SW104
MENU
R104
R112
R113
C108
D101
ST.BY
BA0CN0F0101 3 B
JS901
R117
J904 GND
Q101
SW101 POWER
R118
RS101
C101
C107
POW.
D102
JS902
JS903
R101
R102
R103
R105
R107
R109
C102
C105
C106
R119
R120
R609
R610
R611
R613
R616
R617
C607
C608
C609
D601
D603
D606
D609
IC605 J244
J248
Q602
Q607
BC602
COLD
HOT
R630
R654 R655
R606
R607 R614
R615
FH601
C606
D608
D610
Q601
BC601
PCB STUD
R601
C601
SA601
SW601
J1026 J1027 J1019 J1020
C821
R602
FH602
C605
D604
D605
D607
L601
C611
HOT
J319
J1023
J320
J321
JK412
J322
J323
J324
R1100
R1101
R1102
R1103
R1108
J331
R612
J336
R1111
R1113
R619
R1118
R620
J347
R624
CN801
J353
R635
R638
R639
J360 GND
J361
GND
C602
GND
R640
R641
R646
C612
C613
C615
C616
C618
C619
C622
C628
R669 R680
R684
R685
R689
Q303
D602
D612
D615
6 1 6 D
D617
D619
D621
D622
D623
D624
T601
CN1001
D629
CN1002
D631
D632
D634
C1001
D636
C1002
7 3 6 D
D638
C1005
Q1001
C1006
Q1002
C1007
Q1003
C1008
Q1004
C1009
Q1006
Q1007
Q1008
Q1009
C1010
C1011
D646
C1012
C1013
C1014
Q1010
5 1 0 1 C
Q1011
D649
Q1012
Q1014
Q1015
C1019
Q1016
Q1017
Q1018
Q1019
D653
R308
C1023
Q1020
D1001
D1002
D1003
Q1023
C1027
D1004
Q1024
J228
D1005
R1001
Q1025
J229
D1006
R1002
D1007
R1003
D1008
D1009
R1006
R1007
R1008
J230
C1031
J232
C1033
D1010
J234
D1011
CN301
J235
D1012
J236
D1013
J237
D1014
R1010
J238
D1015
J239
D1016
R1012
R1013
R1014
D1018
D1019
R1017
J240
J241
J242
J243
D1020
L10
D1021
J245
D1022
J246
D1023
J247
D1024
D1025
J249
D1026
D1027
D1028
D1029
R1026
R1029
J251
J252
C1053
J253
D1030
C1055
J255
D1031
D1033
J257
R1030
D1034
C1058
R1031
D1035
C1059
R1032
D1036
D1038
D1039
D1040
J264
D1041
J267
D1045
J269
R1044
C319
R1049
T1002
J272
J277
J280
J283
R1065
R1066
J290
J293 J294 J295
J296
R1074
Q401
R1091
R1092
R1093
R1094
R1095
R1096
R1097
AC601
Q604
Q605
D510
D513
Q612
Q613
J1003
GND
J1004
J1005
J1006
J1007
J307
J1010
J1011
J1012
J1013
C18
C19
BA0CN0F0101 3 A
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
VCOM-PWM
C1
2IN+
2IN+
PANEL+25V
+3.5V
BL-SW
BL-SW
P-ON+3.3V
BL-ADJ
PON+11V
PON+11V
PON+11V
PCB STUD
UVP 2
UVP 1
BL
ON+7.5V
BL
ON+7.5V
BL ON+7.5V
PROTECT 3
3
PROTECT 1
ON/OFF
H1
L
SW-IN
PROTECT
1
GND
+33V
+3.5V
GND
P-ON+5V
1
2
10
11
J411
D1046
J412
D611
J250
R407
R409
R1104
R1105
R1106
R1107
R1109
R1110
R1112
R1114
R1115
R1116
R642
R643
C801
R650
R658
C625
C631
R671
R672
R673 R674
R696
IC402
C1003
C1004
Q1005
C1016
C1017
C1018
R307
C1020
C1024
C1025
Q1022
C1026
R310
C1028
R311
R312
R313
R1004
R1005
IC1001
C1032
C1034
C1035
C1036
C1037
C1038
R1011
C1039
R322
R1015
R1016
R1018
C1040
R1019
C1041
C1042
C1043
C1044
C1045
C1047
R1020
C1048
R1021
C1049
R1022 R1023
R1024
R1025
R1027
R1028
C1050
C1052
C1054
C302
C1056
C1057
C305
C306
C309
R1035
R1036
R1037
R1038
C1060
R1039
C501
C502
C310
C311
R1040
R1041
R1042
R1043 R1045
R1046
R1048
R1052
R1053
R1054 R1055
R25
R1056
R26
R1057
R27
R1058
R1059
R1060 R1061
R1067
R1068
R1069R1070
R1071 R1072
R1073
R1081
R1082
R1083
R1084
R1086 R1087
R1088
R1089
R1090
R1099
C10
R604
R605
R1121
R1120
R1119 C1061 R1122
R1123
IC1002
H.V CAUTION
1
2
COLD
WF8
PIN 29 OF
CN404
WF9
PIN 28 OF
CN404
WF10
PIN 26 OF
CN404
WF1
PIN 2 OF
CN404
WF2
PIN 27 OF
CN401
WF3
PIN 29 OF
CN401
WF4
PIN 4 OF
CN404
WF5
PIN 6 OF
CN404
WF6
P I N 8 O F
CN404
WF7
PIN 22 OF
CN401
Main CBA & Function CBA Bottom View
BA0CN0F01013
Not Used
Main CBA
Function CBA
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
Because a hot chassis ground is present in the power supply
circuit, an isolation transformer must be used when repairing.
Also, in order to have the ability to increase the input slowly,
when troubleshooting this type of power supply circuit,
a variable isolation transformer is required.
CAUTION !
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F601) is blown , check to see that all components in the power supply
circuit are not defective before you connect the AC plug to the AC power supply.
Otherwise it may cause some components in the power supply circuit to fail.
CAUTION !
For continued protection against fire hazard,
replace only with the same type fuse.