FUNAI LH850-M19, Service Manual

Page: 47 / 71

10-15
R402
R602
J329
R612
R624
J353
C605
C612
C615
C616
C618
C637
R684
R685
R686
R689
R697
D605
D607
D613
D420
D616
D618
D619
T601
D637
J400 GND
D648
J249
L402
Q611
Q612
PCB STUD
J411
C611
G
28
2
1
R1111
R1113
CN1001
C1001
C1007
Q1003
C1008
C1009
Q1009
C1010
C1013
Q1014
Q1015
Q1019
D1001
D1004
J228
D1005
Q1025
J229
D1006
D1007
D1008
D1009
J230
J232
C1033
D1010
J234
D1011
J235
D1012
D1013
D1014
D1015
D1016
R1012
R1014
R1017
D1022
D1023
D1024
D1025
D1026
D1027
C1055
D1034
D1035
D1036
R1094
GND
GND
UVP
GND
5
COLD
C602
D602
D604
CN1002
C1002
C1006
C1014
5 1 0 1 C
D1002
R1013
D1021
C1059
T1002
R1091
R1092
D1046
J412
4
3
HOT
F601
T 4A H/250V
BROWN
BLUE
TM602
TM601
WARNING: TO PREBENT ELECTRIC SHOCK AND FIRE HAZARD. DISCONNECT MAINS PLUG BEFORE FUSE REPLACEMENT
TOOL NO.
1 2 3 4 5 6 7 8 9 10
AND REPLACE ONLY WITH MARKED. 2
1
J1023
R601
CN801
C601
SA601
AC601
L601
SW601
J1026 J1027 J1019 J1020
1
2
B A
C7A3 A3
J902 RCV DET
J904
GND
R609
R610
R611
R613
R614
R615
R616
R617
FH601
FH602
C606
C607
C608
C609
Q101
Q102
D601
D603
D606
D608
D609
D610
SW101 POWER
SW102 CH.UP
SW103
CH.DOWN
SW104
MENU
IC605
SW105
D628
D633
R104
R112
R113
R114
R115
R118
RS101
J244
J248
C101
C107
C108
J299
D101
ST.BY
POW.
D102
Q601
Q602
Q607
BC601
BC602
J306
BA0CN0F0101 3 B
PCB STUD
D611
COLD
HOT
C
P
b
6
1
CN101A
CN101
1
6
6
6
1 1
R401
JK410
J1024
JK413
J328
J330
R421
R425
R427
R429
R431
R436
R438
R441
R636
R442
R637
R445
R447
R449
R451
R452
R454
R455
R458
R459
R463
R659
C621
R661
R476
R477
R682
D401
D402
D403
D404 D405 D406
D407 D408 D409
D410
D411
D413
D418
D419
D421
D422
D423
D424
D425
D426
D427
VOL.UP
D626
VOL.DOWN
SW106
D627
D635
D640
D645
R106
CN101B
R110
R111
R116
C109
J262
R157
CN152
J298
D103
D104
Q603
L401
Q610
BC401
D151
J301
JK401
JK402
JK403
JK404 JK405
JK406
P-ON/OFF
SLOW
ALL+3.3V
GND
SP-GND
SLOW
SW-IN
J358
R665
Q608
F E D
1
2
CN802
C415
C419
L403
CN401
J355
SPDIF
29
28
R453
R456
R457
D414
D416
J278
CVBS
L
JK411 JK412
J333
J334
C422
J283
GND
SW-IN
J327
J274
J275
GND
CVBS
VN
CVBS
V
CN404
J286 SCART
CVBS
OUT
Q803
2
1
J318
J320
J321
J322
J336
J359
C808
J281
Q401
Q801
Q802
J309
J313
J314
J315
J316
J317
PON+11V
PON+11V
A-MUTE
SCART-OUT-SEL
VDACOUT1
AMP-R
AMP-L
GND
GND
GND
TU CVBS
2
1
29
28
C27
J357
TU10
D625
CN302
CN303
J276
J279
J287
J288
J289
J291
J292
D302
C18
P-ON-H2
P-ON+5V
GND
GND
SIF
P
SIF N
TU CVBS
1
2
29
29
28
J323
J324
J325
J332
J350
J351
Q10
C623
C641
C647
Q305
D649
L10
L11
J251
R11
J269
R12
J271
J272
J290
J293
J294
J295
J296
J297
D301
Q404
D510
D513
J307
C14
C16
C19
J312
A
GND
GND
GND
GND
VCOM-PWM
+3.5V BL-SW
P-ON+3.3V
P-ON-H1
BL-ADJ
PON+11V
PROTECT 3
PROTECT 1
PROTECT
1
PROTECT
3
GND
P-ON-H2
P-ON+5V
C1005
Q1001
Q1007
Q1016
Q1017
Q1018
R1001
R1002
R1006
C1031
J236
J237
R1010
J238 J239
J240
D1020
J245
J247
R1029
R1044
R1066
R1093
J1013
GND
GND
GND
GND
2
UVP 1
BL
ON+7.5V
BL
ON+7.5V
BL ON+7.5V
J319
R1101
R1102
R1103
J331
R619
R620
R635
R638
R639
J360 GND
R641
R646
C622
C628
R669 R680
D615
D617
D621
D623
D624
D629
D631
D632
D636
Q1006
Q1008
C1011
C1012
Q1010
C1019
C1023
D1003
R1003
R1007
R1008
D1018
D1028
D1029
R1026
J252
D1030
R1030
C1058
R1032
D1039
D1040
J264
J277
R1065
Q604
Q613
J1003
GND
J1010
J1011
J1012
GND
2IN+
ON/OFF
H1
+33V
J338
J339
R1117
R1118
J340
J341
J342
J343
J347
J354
J356
J361
GND
R640
R644
C613
C614
C619
C626
R663
R670
D612
D620
D622
D634
D642
D643
D644
D646
D651
Q1020
D1019
D671
J256
R1033
R1034
J270
J273
J280
R1096
R1097
Q605
J302
GND
+3.5V
P-ON+3.3V
+15V
ALL+3.3V
+33V
ON/OFF
H1
POW
f
or
1.1V
+3.5V
ON/OFF
R1100
J362
GND
R652
R660
C639
Q301
Q302
Q303
Q1002
Q1011
Q1012
R305
R308
R309
Q1023
J231
J233
CN301
J246
J253
C301
J255
J257
R1031
J259
J260
C312
J268
D1045
C319
D508
D509
D511
Q615
BA0CN0F0101 3
GND
GND
VCOM-PWM
PANEL+25V
BL-SW
PANEL+13V
PROTECT 1
PROTECT
3
1
2
10
11
C7A3 A3
D653
J267
Q616
GND
R1108
Q1004
C1027
Q1024
J241
J242
J243
C1053
D1031
D1033
D1038
D1041
R1049
R1074
R1095
J1004
J1005
J1006
J1007
GND
GND
C1
2IN+
J250
J1025
J1028
J335
R806
J337
J344
J348
J349
C417
R653
R656
C814
C430
C629
R471
C630
C640
D801
IC801
D638
D639
J258
J261
J265
C318
Q405
Q406
D501
D502
D503
D506
Q609
L405
Q804
Q614
J303
J304
J305
J310
J1015
J1016
J1017
GND
GND
GND
P-ON/OFF
PANEL-6.8V
P-ON+3.3V
+15V
ALL+3.3V
PON+11V
GND
H1
JK408
JK409
R805
J346
R433
J352
C804
C805
C806
C807
R651
C812
C632
R675
R676
R690
R691
D802
D803
D804
D805
D806
D641
D650
D672
D673
Q606
L406
L407
L408
J300
ALL+3.3V
J308
J311
JK407
GND
GND
J263
Q617
J410
D670
BA0CN0F01013
Main CBA & Function CBA Top View
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.