FUNAI LT850-M22 - SERVICE, Service Manual

Page: 49 / 75

10-17
C1500
P-ON-H1
J318
C1501
R401
C1502
C1503
J1020
C1504
J1021
C1505
J1022
+15V
J1023
C27
JK410
J1024
AG
J320
J1025
AG J321
AG
J322
GND J1027
GND
J323
JK413
GND
J1028
GND
J324
C1700
J1029
GND
J325
C1701
R601
J326
C1702
R602
C1703
GND J328
C1704
GND J329
C1705
J1030
R609
INV+33V
J1032
INV+33V J1033
J1034
J330
GND J1035
J1036
GND J1037
GND J1038
GND
J334
R610
J1039
GND
J335
R611
R805
CN401
GND J336
CN402
R612
J337
CN403
R613
GND J338
R614
CN404
GND
J339
R421
R615
R616
R617
J1040
D1500
J1041
R425
R619
D1501
INV+33V J1042
D1502
INV+33V J1043
R427
D1503
GND J1044
D1504
J1045
J341
GND
GND J1046
J1047
J1048
R620
R1504
R1505
R1506
R817
R1507
R624
R818
R1508
D1700
R1509
D1701
D1702
D1703
D1704
CN801
GND J1052
R436
CN802
GND
J1053 J1054
R438
R1704
J1055
R1705
GND J1056
R1706
GND J1057
R1707
GND
J1058
R1708
+7.5V
J1059
R1709
R441
R635
R442
R637
GND
J1060
CN1550
R638
Q10
GND
J1061
R445
R639
BL-ADJ J1062
Protect-3 J1063
R447
BL-SW J1065
R449
C601
FH601
VCOM
J1066
C602
FH602
VCOM-PWM
J1068
J364
R640
GND J365
GND J1069
R641
C605
C606
J367
C607
J368
C1550
CN1750
R644
C608
GND
J369
C1551
R451
C609
C1552
R452
R646
C1553
R453
C1554
C1555
GND
J1072
R456
R457
GND J370
R458
C804
J371
GND
R459
C611
C805
C612
C806
C613
C807
C1750
C614
C808
R651
C615
C1751
C1752
R652
C422
C617
C1753
C1754
C618
C1755
C619
R656
R463
R659
C812
C814
C620
C621
C622
C623
J190
R660
C430
SLOW-SW-IN
J191
R661
C626
+15V
J193
R663
J194 +7.5V
C628
T1500
SIF-P
J195
R471
C629
SIF-N
J196
TU-CVBS
J197
P-ON+5V
J198
D1550
R669
D1551
D1552
D1553
D1554
C630
D1555
D1556
C632
D1557
C634
R670
T1700
C637
D1750
R675
D1751
C639
R676
D1752
D1753
D1560
D1754
D1561
D1755
D1562
D1756
D1563
D1757
D1564
C640
C641
R680
C645
R682
R684
D1760
R685
D1761
R686
D1762
D1763
D1764
R689
Q301
Q302
Q303
C651
Q305
R690
D402
D404
D406
R697
R698
D408
D601
D603
D410
D411
D412
D606
D413
D414
D608
D415
D609
D416
D417
D419
D801
D802
D803
D804
D610
D805
D612
D613
D420
D614
D421
D615
D422
D616
D423
D617
D618
D424
D425
D619
D427
D428
D429
2 1 8 D 1 1 8 D
D813
D620
D814
D621
D623
D430
D624
T601
IC605 D627
D628
D629
IC801
D631
D632
D633
J200
PON+11V
D634
D635
C1001
D636
D637
C1003
PON+11V
J204
D638
J205
D639
Q1001
P-ON-H2
J206
C1006
Q1002
J207 ALL+3.3V
ALL+3.3V
J208
Q1004
Q1005
Q1006
Q1007
D640
Q1008
D641
Q1009
D642
D643
P-ON+3.3V J210
D644
D645
BC1001
J211
BC1002
D646
C1012
PANEL+12.5V
J214
D648
C1014
Q1010
BC1005
D649
Q1011
BC1006
Q1012
BC1007
PANEL-5.5V
J218
BC1008
C1402
C1403
D650
C1404
D653
R308
R309
GREEN LED +25.6V
J222
J223
C1600
CN102A
GND
J
225
C1601
P-ON+3.3V J226
C1602
J227
C1603
D1003
JS400
C1604
D1004
POW-for-1.1V
J229
R311
C1605
D1005
D1006
R1002
CN103
D1007
D660
R1004
R1005
P-ON+5V
J230
SP-L
J231
GND J234
D1010
D1011
CN301
VDACOUT1
J236
D1012
+15V
J238
ON/OFF-H1
J239
R1012
D670
D671
D1401
D672
D673
D1403
D674
R1018
D1404
GND J240
+33V
J241
R1019
AMP-R
J242
GND
J243
AMP-L
J244
L10
J245
L11
VCOM-PWM
J247
BL-SW
J
248
D1600
BL-ADJ
J249
D1601
R1022
D1602
D1603
D1604
R1026
R1027
R1028
R1604
GND J250
PANEL-5.5V
J251
R1029
R1605
R1606
J252
POW-for-1.1V
P-ON+3.3V
J253
R1607
R1608
J255
R1609
C301
P-ON-H1 J257
J258
R1030
J259
R1031
J260
ALL+3.3V J261
R156
P-ON-H2 J262
R157
+3.5V J263
PANEL+12.5V
J264
C312
PANEL+12.5V
J266
Protect-1
J268
CN1650
J269
D1045
R11
R1042
C318
C319
J270 P-ON+5V
R1048
P-ON+3.3V
J271
R1049
AG
J273
PON+11V
J274
C1650
Protect-3 J275
C1651
Protect-1
J276
C1652
P-ON+3.3V
J277
C1653
Protect-1
J278
R1050
C1657
R1053
C1658
J283
GND
J292
GND J293
GND J294
T1600
GND J295
SA601
GND
J297
D1650
COMP-R J299
R1071
D1651
R1072
D1652
D1653
R1074
D1654
D1655
D1656
D1657
D1660
D1661
D1662
D1663
D1664
D301
Q404
Q405
Q406
D501
D502
D503
Q601
D506
Q602
Q603
D508
Q604
D509
Q605
Q606
Q607
Q609
D510
D511
L405
Q801
L406
Q802
L407
D513
Q803
L408
Q610
Q804
Q611
Q612
Q613
Q614
Q615
BC401
L601
BC402
Q616
BC601
BC602
BC603
BC604
BC605
BC801
BC802
D151
J1001
J1002
INV+33V J1003
J1004
J1005
INV+33V
J1006
J302
INV+33V
J1007
J303
INV+33V
J1008
J304
GND
J1009
J305
SW601
ALL+3.3V
J306
J307
J1010
C14
J1011
GND J1013
GND J1014
SLOW-SW-IN
J310
C18
+15V/+12V
J1015
JK401
J311
JK402
GND
J312
J1017
JK403
GND
J313
JK404
J314
J1019
JK405
J316
J317
5.0mm
7.5mm
COLD
HOT
5
1
D C B A
2
3
4
E F
P-ON+3.3V
J267 R653
R806
COMP GND
GND
D815
11
10
1
10
1
2
2
1
29
28
28
29
1
2
2
1
29
28
28
29
1
2
1
15
1
9
10 18
SCART
CVBS
OUT
COMP-Pr
COMP-Pb
COMP-Y
COMP-L J298
PON+11V
J201
A-MUTE
J202
J1026
J1012
J279
BA0C70F0101 2 LC8.5 EU 22W
J265
J1018
J1016
Q1501
Q1601
D1405
Q1701
J192
R420
S-SW
GND
J366
TU10
AC601
J235
RESET
J284
J300
GND
J232
J309
GND
J372
J246
J373
Q617
J375
J374
D600
Q608
C1013
D607
D602
D605
D604
D622
C616
J1080
J376
BLUE LED +12.5V
BLUE LED +12.5V
J377
6
1
C21 C22
R403
C24
Q1500
C1506
C1507
R28
Q1700
R411
R412
C1706
R413
C1707
R1105
R502
R1106
R1107
R1109
R801
R802
R803
R804
R807
R1110
R808
R809
R422
R423
R424
R426
R810
R1500
R811
R1501
R812
R1502
R813
R1503
R814
R815
R816
R625
R819
R626
R627
R628
R1700
R629
R1701
R1702
R437
R1703
R820
R439
R823
R630
R824
R825
C402
R826
C403
R827
R440
C404
R829
C405
C406
R443
R444
C408
C409
R446
R448
R830
R831
C410
R642
C413
R643
C414
R450
R648
C418
R649
C801
C802
R505
C803
R504
C1558
R503
R650
C420
C421
C809
C423
R654
C424
R655
C425
C426
R657
C427
C810
C1758
R658
C428
C429
C811
R467
C813
R468
C815
R469
C817
C431
C625
C819
C432
C433
C434
C435
R472
R666
C437
R473
R667
C438
R474
R668
C820
C821
C822
C823
C824
R1550
C825
R1551
C631
C441
R671
C442
R672
C636
C443
R673
R480
C444
R674
R1558
C638
R481
R1559
R677
R484
R678
R1750
R485
R1751
R486
R487
R1560
C642
C643
R1758
C644
R681
R1759
C646
R683 R687
R688
R1760
C652
R694
R695
R696
C480
C481
C482
C483
C484
C485
C486
C1004
C1005
C1007
Q1003
C1008
C1009
C1010
C1011
C1015
C1016
C1017
Q1013
C1018
Q1014
R301
R302
R303
R304
R305
R306
Q1402
R307
C1020
C1021
R501
Q1023
Q1024
R310
Q1600
R312
C1606
R313
C1607
R1003
R314
R1006
R1007
R318
R1008
R319
R1009
R320
R321
R322
R1014
R1015
R1016
R1017
R1403
C1045
R1405
R1406
R1407
R1020
C1049
R1021
R1023
R1024
R1600
R1025
R1601 R1602 R1603
C302
C303
C304
C305
R1032
C306
R1033 R1034 R1035
C309
R1036
R1037
C310
C311 C313
C314
C315
C316
R12
R1043
C317
R13
R14
R1044
R1045
R15
R1046
R16
R1047
R18
R19 R20
R1051
R21
R1052
R24
R1054
R25
R1055
R26
R1056
R27
R1058
R1059
C1661
R1060
R1061 R1062
R1063
R1064
R1065
C151
C152
C153
C154
R1650
C155
R1075
R1651
R1076
R1658
R1659
R1660
IC301
C10
C11
C12
C15
C17
C19
R488
R29
IC1001
C29
R30
R699
R323
R464
R462
R22
R607
R606
R605
R604
R618
R31
C647
R662
C501
1
3 5 6
6 1 9
H.V
CAUTION
H.V
CAUTION
H.V
CAUTION
2
1
1 2
2
11
1 4
5 8
1
8
9
16
1
4 5
8
8
5
4
1
8
5
4
1
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 Bottom View
BA0C70F01012
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.