Block Diagram Display & Platform Supply 32 - Philips Q528.1E Service Manual

Block Diagrams, Test Point Overview, and Waveforms
Block Diagram Display & Platform Supply 32"
DISPLAY SUPPLY + PLATFORM SUPPLY 32"
A1 MAINS FILTER + STANDBY
5401
5403 1450
5405
1308
1400
MAINS
2
FILTER
T5AH
1
7801
7802
ON/OFF
STANDBY
STANDBY
A2
COLD GROUND
HOT GROUND
Q528.1E LA 6.
A2 SUPPLY
3810
25V_HOT
6807
TS6B
400V_HOT
+
-
5007 5008
7001
MC34067PG
VCC
11
OSCC
3007 CONTROL
OA
7
ERROR
7017
OB
7018
11
SOST
FI
SOFT
START
5
VREF
+
CURRENT
PROTECTION
7004
7009
OVER
VOLTAGE
PROTECTION
2014
SUPPLY
B01A
6B04
SS36
1B32
5B00
2 2
7B00
T1.6A
1 1
7B01
7B02
41
4
BIAS SUPPLY
3100 3
3000 3033
5017 6079 6077 6078 5010
5002
2003
8
400V_HOT
7
7005
STP15NK50
5001
7007
HIGH
15
6
SIDE
5
DRIVE
7
5015 5040
14 4
3
5016
12 2 7006
STP15NK50
7008
10
LOW
10
SIDE
DRIVE
9
HOT GROUND COLD GROUND
5B01
5 7
3 8
2 9
10
7B05
1
11
12
CONTROL
3B50
3B61
4 1
7B04
TCET1102
3 2
HOT GROUND COLD GROUND
A1 MAINS FILTER + STANDBY
3057
1
7002
TCET1102
2
5028
9
+12Vd
10
2020
5027
11
13
12
6044
5025
14
+24V
15
2022
6044
5026
16
7010
TS2431
VS Voltage
Adj.
+12Vd
7013
+5V2 3052
Power-Good = 5V
if +12V >10V
2B48
6B07 +AUDIO-POWER
2B51
6B08 -AUDIO-POWER
6B06 +12VS
2B46
6B05 1B33 +5V-STANDBY
7B06
2.5AT
2B45
7B50
CONTROL
AUDIO-PROT
B11C
1M09
5406
1
TO
2
AMBI-LIGHT
1320
1
2
3
TO
DISPLAY
4
5
11
12
1317
1
2
3 TO
DISPLAY
4
5
11
12
1P11
+12Vd
8
+5V2
7
STANDBY 6
A1
A1
BOOST 5
N.C TO 1P11
A2
4
SSB
ON-OFF 3
POWER-GOOD 2
DIM-CONTROL 1
1B40
1
FOR SERVICE
2
TO PROVIDE
3 EXTERNAL
SUPPLY
4
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