Table of Contents
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Block Diagrams, Testpoint Overviews, and Waveforms
Block Diagram Supply 42 Inch FHP
SUPPLY 42" FHP
PRECONDITIONER
A5
PRECONDITIONER
6600
GBU8J
3
F601
5600
6611
1
4
16
14
-
+
7610
5612
2603
STW26NM50
2
1
2
4
6
3610
D
G
7608
S
6606
3611
3614
6605
F604
3608
2663
3663
6661
6660
2664
3660
F608
7661
3668
MC34063AD
6641
8
1
F609
DC TO DC
5660
6665
7
2
CONVERTOR
7650
I622
MC33368
16
LINE
6663
2662
BIAS
7
ZC
CONTROL
12
VCC
F610
I625
3605
3641
11
GATE
7641
5
MULT
3
I618
VFB
CS
3651
D
6
I629
7640
2640
G
BSN20
S
3640
3666
2666
AC3 100-230VAC2
AC5 100-230VAC1
3450
3451
MAINS FILTER UNIT
+t
0
+t
0
5005
5401
0308
5402
1400
1
2
1
2
2
2
MAINS
MAINS
-t
T6.3A
FILTER
1
FILTER
1
1450
1460
F411
4
3
4
3
FILTERS STANDBY
A2
1M05
7465
7460
7470
1
SECOND
ACTIVATING
2
STANDBY
ACTIVATING
DELAY
6513
6512
BYG10
BYG10
3506
+t
400V-HOT
A
6510
6511
2503
A5
BYG10
BYG10
- STANDBY SUPPLY -
5500
F500
6504
F502
RS1G
2
6
CONTROL
3507
3
7
7500
I510
TNY256
I508
8
4
5
ENABLE
DRAIN
9
7-8
SOURCE
4
6505
F503
SB34
1
3501
4
1
3505
7501
TCET1102
1
3
7502
2
TS2431
2
3503
3
I504
6503
RS1G
3508
+25V-HOT
2505
FTP2.4E AA
LLC SUPPLY
A6
HOT
- LLC-CONVERTER -
F600
400V-HOT
400V-HOT
A2
- BIAS-SUPPLY -
7093
A
LM317T
F001
400V-HOT
3092
25V-HOT
BIAS
2616
7090 :
7092
3095
2053
PROT
3096
SW25V-HOT
6095
7007
SW25V-HOT
5001
7020
STU16NB501
7001
15
HIGH
MC34067P
10
G
SIDE
VCC
DRIVE
I038
11
CONTROL
F003
F005
7017
14
4
7018
15
OA
3
SOFT
12
2
6
OB
7006
START
7008,
+
7021, 7012
BZG03
8
10
F004
CURRENT
FI
LOW
PROTECTION
14
G
7
SIDE
3011
DRIVE
I057
13
3680
3050
3671
AUX-SUPPLY
A7
70-90V
- VA-SUPPLY -
I107
5121
3452
I101
1110
3118
2
1
0
TA5
D
S
3
4
7110
VCC &
HOT
DRAIN
6120
CONTROL
G
7117
COLD
PSMN035
7112
TEA1507
8
1
3117
DRAIN
I105
VCC
6
3
DRIVER
CTRL
5
SENCE
2
CONTROL
+9V_STBY_SW
3113
6113
4
DEMAG
A3
6111
2114
7120
TCET1102
SUPPLY_ON
PROTECTIONS
A3
+5V_STBY_SW
VS PROTECTION
+9V_STBY
3308
VS_UNSW
70-90V
6312
3312
3300
7308 A+B
+5V_STBY_SW
7
1
2V5 CIRCUIT
6
6313
2V5
5
+5V_STBY_SW
2
4
3304
2V5
7304
TL43IC2
1
3324
3
COLD
HOT
+25V-HOT
2
6.
EN 25
HOT COLD
+5V_STBY_SW
4
1
VS-SUPPLY
7003
TCET1102
2
3
1084
5002
F1A
16
7005
14
D
S
12
3
6
11
I083
10
D
9
S
6044
STTH2003C
16
3
2
14
2020
12
1
3
6
6021
1083
BYU28
I083
11
F2,5A
10
6045
1082
2022
BYU28
9
F2,5A
7010,7011
4
1
7002
CONTROL
TCET1102
CIRCUIT
3
2
HOT COLD
- VCC SUPPLY -
VS_UNSW
5220
70-90V
1200
1
VA
3
T2A
I236
I214
2
7200
2121
4
BSN304
7212
I213
D
TEA1507
8
7217
I216
VCC_GO
PSMN070
G
1
DRAIN
VCC
A3
D
S
6
G
DRIVE
3
CTRL
S
5
3202
SENCE
4
7202
DEMAG
3218
BSN20
I208
GND
D
G
3214
S
6211
5
I220
2210
7
VA
+30V
VRA
4
A3
VSA_CONTROL
4
1
A3
VA
3
ADJ.
3
2
SUPPLY-ON
VA PROTECTION
VCC PROTECTION
12V PROTECTION
VA
VCC
+12V
6321
3321
6333
3333
3311
3320
3332
7308 C+D
7330 A+B
7330 C+D
11
7
11
13
1
3313
10
6
10
6322
6334
2V5
2V5
2V5
9
5
9
14
2
8
4
8
+9V_STBY
3317
7375
7389
7376
+5V_STBY_SW
+12V_OVP
VSA-
3389
CONTROL
A7
LOGIC
3388
A7
AUX-SUPPLY
LATCH
A3
- AUDIO SUPPLY -
DC_PROT
A3
1002
F293
TO 1002
DC_PROT
7
6291
VSND_POS
6
C
D458L20U
5290
5
PDP AUDIO
6291
2292
GND_SND
4
4
2
3
VSND_NEG
2
2294
3
1
6292
1
+12V SUPPLY
F294
VB
1200
+30V
7260
T2A
7,8
+12V_OVP
L4973
3
3345
6348
2
CONTROL
3346
12
3072
VTUN
A7
V.S._UNSW
VS- SWITCHED
70-90V
D
S
7050
PSMN035
VS_UNSW
F016
G
70-90V
I200
VS
VB
CONTROL
SWITCH ON
POK
LOGIC
VS
A3
+30V
SWITCH
LOGIC
VSA-CONTROL
SEQUENCE
DISCHARGE
A3
VRS
A3
VRS
FEEDBACK
F140
VCC
6225
14
3
2
5225
13
A3
PROTECTIONS
12
1
2225
11
5229
+9V_STBY_SW
F116
6230
3360
3363
18
16
2230
FAN CONTROL
7230
7366-2
L4940
A3
5
3228
7
+8V6
1
6
+2.5Vref
7220
TCET1102
7227
3224
6378
7326
TL431CZ
2
7327
+5V_STBY_SW
POK
A7
DETECTION
3225
+8V6
CIRCUIT
+8V6 UNDER
VOLTAGE PROT.
DC_PROT
VCEGO
LATCH
3349
+5V_STBY_SW
7351
3350
6347
3345
6340
3338
3358
3361
3353
7352
7348
3346
3347
6364
3354
13
7362
6341
F343
14
7004
3344
3364
+5V_STBY_SW
6362
3343
3341
7341
3342
0323
VA
1
2
NC
VCC
3
4
TO
1M10
5
CN23
1
TO 1M10
6
PDP
+12V
2
7
AL
NC
3
VS
8
4
AMBIENT
9
LIGHT
10
0333
VCC
1
2
0323
3
11
4
TO
10
5
CN33
+9V_STBY
+12V
9
6
PDP
TO 1M46
NC
8
VS
7
VTUN
7
B21
8
+5V_STBY_SW
6
9
SSB
VCC
5
4
3
+8V6
2
1
0342
VA
1
2
NC
3345
3
NC
TO
VCC
4
CN42
3346
5
PDP
6
NC
VCC
7
VS
VS
6142
2021
0352
BYD33D
VA
VA
VA
1
2
NC
3
NC
TO
4
CN52
5
PDP
6
NC
VCC
7
3053
FITER STANDBY
A2
0306
1
+3V3_STBY_SW
I201
3
TO
4
CN6
D
7052
G
PDP
1004
IRFR18N15D
VCC
6
S
I202
T2A
0311
1
2
3
4
TO
VRA
5
A3
CN11
VRS
6
A3
PDP
VCEGO
7
A3
VSAGO
8
A3
PFCGO
9
A3
- ERROR LOGGING -
0319
1
POR
F300
2
F301
3
F302
4
F304
5
TO 1M03
F305
6
STANDBY
7
B21
8
SSB
+9V_STBY_SW
9
F309
POWER_OK
10
F310
VA
VS
3396
3302
3397
3303
STANDBY
3305
3316
3390
0307
VSK
1
I900
6366
2
I943
+5V_STBY_SW
VAK
3
I901
5
3391
2x
VRS
7
7391
I903
TO
2x
VRA
9
I904
CN7
PFCGO
11
PDP
A2
VCEGO
13
I905
A3
VSAGO
15
A2
I906
A3
20
7393
NC
E_14650_041.eps
140405
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