Table of Contents
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Block Diagrams, Testpoint Overview, and Waveforms
Block Diagram Power Supply (FM24 AB/FM33 AA)
P5
PRECONDITIONER
PRECONDITIONER
6600
GBU8
3
F601
5600
6611
1
4
16
14
-
+
7610
2605
ST434NB50
2
I608
I607
1
2
4
6
3610
G
D
7608
S
I609
6606
3611
3613
6605
F604
3608
2663
3663
6661
6660
2664
3653
7660
BIAS
3668
L7815
F609
6665
7650
I622
MC33368
16
2662
LINE
7
ZC
CONTROL
12
VCC
I625
F610
3650
3641
11
GATE
7641
5
MULT
3
I618
VFB
VFB
3651
3
D
I629
2640
7640
G
BSN304
S
3640
3666
2666
AC3 100-230VAC2
AC5 100-230VAC1
3450
3451
0
0
MAINS FILTER UNIT
+t
+t
5401
0308
F404
I406
5402
1400
2
2
1
2
1
2
MAINS
MAINS
0
T6.3A
-t
FILTER
1
1
FILTER
F407
1450
1460
I407
F411
4
3
4
3
P2
FILTERS-STBY
7465
7460
7470
ACTIVATING
ACTIVATING
DELAY
6513
6512
BYG10
BYG10
3506
+t
400V-HOT
A
6510
6511
2503
BYG10
BYG10
- STANDBY SUPPLY -
5500
F500
6504
F502
RS1G
2
6
CONTROL
3507
3
7
7500
I510
TNY256
I508
7540
I517
8
L7805
4
5
ENABLE
DRAIN
IN
OUT
D
S
9
7-8
7531
SOURCE
STD16NEO6L
G
4
6505
F503
SB340
1
D
S
7530
3501
STD16NEO6L
4
1
G
3505
7501
TCET1102
1
I516
3
7502
2
TL431
3
3503
2
I504
6503
RS1G
3508
+25V-HOT
2505
FM33
P6
LLC-SUPPLY
HOT
- LLC-CONVERTER -
F600
1004
400V-HOT
5003
400V-HOT
2A
- BIAS-SUPPLY -
7093
A
LM317T
F001
400V-HOT
3092
25V-HOT
BIAS
2616
7090 :
7092
3095
2002
PROT
3096
7005
SW25V-HOT
6095
7007
SW25V-HOT
5001
STU16NB501
7020
7001
HIGH
MC34067P
15
10
G
SIDE
VCC
DRIVE
I038
11
CONTROL
F003
F005
7017
14
4
7018
15
OA
3
12
2
SOFT
6
OB
7006
START
7008,
STU16NB501
+
F004
7021, 7022
8
10
CURRENT
FI
D
LOW
G
PROTECTION
7
14
SIDE
3011
DRIVE
S
I057
13
3670
3050
3671
P7
AUX-SUPPLY
77-100V
- VA-SUPPLY -
F015
5120
3452
I101
I107
1110
3118
5
2
4
1
TA5
7140 A+B
D
S
7142
7110
7111
VCC &
HOT
DRAIN
6120
MEASUREMENT
CONTROL
G
7117
COLD
+9V_STBY_SW
PSMN035
77-100V
7112
TEA1507
8
1
3117
DRAIN
I105
VCC
6
FAST SWITCH OFF
3
DRIVER
CIRCUIT
CTRL
5
FOR CONTROL IC
SENCE
AT SWITCH OFF
2
CONTROL
+9V_STBY_SW
3113
6113
4
DEMAG
6111
2114
P3
7120
TCET1102
F412
SUPPLY_ON
P3
PROTECTIONS
- TEMP PROTECTION -
- VS PROTECTION -
+9V_STBY
+5V_STBY_SW
3368
I920
7366 A
+t
+5V_STBY_SW
3
3365
VS_UNSW
1
70-90V
2
3369
6312
3309
3300
6365
7308 A+B
7
+3V3_STBY_SW
1
I914
2.5V
CIRCUIT -
6
ref
6313
2.5Vref
5
+5V_STBY_SW
2
4
6520
6314
3304
+9V_STBY_SW
2.5Vref
P3
7304
TL43IC2
1
3324
3
COLD
HOT
+25V-HOT
2
6.
39
HOT COLD
+5V_STBY_SW
4
1
VS-SUPPLY
7003
PCET1102
3
2
1084
5002
T2A
16
6041
1041
STTH2003C
15
3
D
T5A
14
2
S
3
1042
13
1
6
T5A
12
I083
2043
6046
1043
STTH2003C
3
T5A
11
2
10
1044
1
9
T5A
6044
STTH2003C
3
5002
2
16
1
15
6047
STTH2003C
14
3
2020
3
13
2
6
12
I083
1
6021
1005
BYU28
11
T5A
10
6045
2022
1045
BYU28
9
T5A
7010,7011
4
1
7002
CONTROL
TCET1102
CIRCUIT
3
2
HOT COLD
- VCC SUPPLY -
VS_UNSW
5220
70-90V
1200
I152
1
3146
VA
3
T2A
I214
I236
2
2121
7200
BSN304
7212
4
I213
TEA1507
7217
D
8
I216
VCC_GD
G
1
PSMN070
DRAIN
IA CURRENT
VCC
S
D
IAKS
6
G
DRIVE
3
CTRL
S
3202
5
SENCE
4
7200
DEMAG
3218
BSN20
I208
GND
D
G
3214
S
6211
7143
7
I220
7144
7145
2210
+5V_STBY_SW
9
+8V
VRA
4
1
VSA_CONTROL
4
1
CONTROL
CIRCUIT
VA
3
2
ADJ.
3127
3
2
SUPPLY-ON
- VA PROTECTION -
- VCC PROTECTION -
- +3V3 PROTECTION -
VA
VCC
+3V3
6321
3338
6333
3330
3311
3320
3332
7308 C+D
7330 A+B
7330 C+D
I915
I916
11
7
11
13
1
13
10
6
10
3313
6322
6334
2.5Vref
2.5Vref
2.5Vref
9
5
9
14
2
14
8
4
8
6324
6335
3317
7389
7375,7376
+5V_STBY_SW
+3V3_OVP
VSA-
3389
CONTROL
P7
LOGIC
3388
2x
P4
FAN CONTROL
LATCH
I700
5703
D
S
+12V
- AUDIO SUPPLY -
DC_PROT
7700
6703
G
2701
FAN_SP1
I705
7701
D
S
I704
0302
7706
+12V
DC_PROT
9
6709
TO
I709
G
8
+9V_STBY
2707
F293
0302
7
FAN_SP2
7707
6291
VSND_POS
6
D458L20U
A7
5290
5
SUPPLY
2292
GND_SND
4
4
2
DC. PROT.
3
VSND_NEG
(AUDIO
2
2294
PANEL)
3
1
1
F294
VB
- +3V3 SUPPLY -
7260
I261
L4973V
1260
+15V
7,8
5268
2,3
CONTROL
IA5
10
+3V3_OVP
77-100V
FROM
3261
6260
P3
FUNCTIE
6267
3260
V.S._UNSW
VS- SWITCHED -
70-90V
D
I200
S
7050
PSMN035
G
VB
VS_UNSW
SWITCH ON
70-90V
POK
LOGIC
VS
VS
CONTROL
SWITCH
G
+15V
LOGIC
SEQUENCE
VSA-CONTROL
DISCHARGE
I202
VRS
VS
ADJ.
3026
F140
6224
5V
VCC
STPS20L40CF
14
3
5224
2
PROTECTIONS
P3
12
1
2224
6225
+9V_STBY_SW
3
13
5225
2
3360
11
1
F116
FAN SUPPLY
3363
6230
18
+12V
P4
16
FAW
6232
2230
FAN CONTROL
7230
7366-C
L4940
P3
10
3228
8
+8V6
9
+2.5Vref
F144
7220
7227
TCET1102
3224
6378
+8V6 UNDER
TL431CZ
VOLTAGE PROT.
POK
+8V6
DETECTION
3225
CIRCUIT
7326, 7327
-DC_PROT-
- VCEGO -
- LATCH -
+5V_STBY_SW
3349
+5V_STBY_SW
+9V_STBY_SW
7351
3350
6347
3345
6340
3338
3358
3360
3353
7352
7348
3347
3346
I919
6364
3362
3354
6341
I917
7362
F243
3344
6348
3364
+5V_STBY_SW
6362
6342
3343
3341
7341
3342
0323
0389
VA
1
3
2
NC
VCC
3
FAN1
4
2
TO
(OPTIONAL)
5
CN23
6
1
PDP
7
NC
VS
8
0390
9
3
10
2
FAN2
(OPTIONAL)
1
0333
VCC
1
2
3
4
TO
5
CN33
6
PDP
NC
VS
7
8
F261
0305
9
+3V3
12
11
TO
0305
10
+3V3
9
SC8
0342
CONTROL
VCC
1
FUNCTIONS
VA
1
2
NC
3
TO
NC
VCC
4
CN42
VS
5
PDP
F120
6
NC
VS
VCC
7
6142
2021
0352
BYD33D
VA
VA
VA
1
2
NC
3
NC
TO
4
CN52
5
PDP
6
NC
VCC
7
0392
3241
VS
1
VS-VA
VA
2
ADJ.
3240
I201
D
7052
IRFR18N15D
S
STBY
P2
0306
1
+3V3_STBY_SW
3
TO
4
CN6
PDP
1401
VCC
6
T2A
- ERROR LOGGING -
7370
PCF8574AT
0319
I370
VS_PROT 4
1
+9V_STBY
F300
I371
VA_PROT 5
2
+9V_STBY_SW
F301
3
I909
VCC_PROT 6
+8V6
F302
4
+5V_STBY_SW
F304
I910
+3V3_PROT 7
5
T/O
3370
+3V3_STBY_SW
F305
14
SCL_1
6
I911
OVERVOLTAGE
9
EXP.
SDA_1
7
TO
CONTROL
3371
SC8
8
0319
FUNCTIONS 2
15
SWITCH
10
POWER_OK
9
F309
TEMP-3
10
I912
DC_PROT1 11
STANDBY
11
ERR
F310
I913
TEMP_PROT 12
6
FAN_SP1
12
FAN_SP2
13
POWER_OK
VA
VS
3396
3302
3303
3397
- STANDBY -
- IAK BUFFER -
3305
3316
3390
0307
VSK
1
I900
6390
2
+5V_STBY_SW
7366-B
VAK
3
I901
5
3387
7
IAK
5
I902
6
VRS
7
I903
TO
VRA
9
CN7
3386
I904
7391
11
PDP
3394
NC
VCEGO 13
I905
VSAGO
15
I906
20
NC
7393
CL 26532055_011.eps
030502
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