Block Diagram Supply 42 - Philips 32PF9968/10 Service Manual

Block Diagrams, Test Point Overview, and Waveforms

Block Diagram Supply 42"

SUPPLY 37"- 42"
MAINS FILTER + STANDBY
A1
5305
5306
1308
1314
MAINS
2
1350
FILTER
T5AH
3 2
1
1
4
7308
7309
ON/OFF
STANDBY
Standby
A2
COLD GROUND
HOT GROUND
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Q523.1U LA 6.
SUPPLY
A2
2327
3318 6304 25V_HOT
6307
GBJ6J
400V_HOT
- +
5007 5008
1P22
7001
1 MC34067PG
TO 1P22
AP1
VCC
AUDIO AMBI 11
OSCC
2
SUPPLY
3007
CONTROL
7
ERROR
7011
7012
11
SOST
SOFT
START
5
VREF
+
CURRENT
PROTECTION
7004
7009
OVER
VOLTAGE
PROTECTION
2014
B01A SUPPLY
6B04
SS36
1B32
5B00
2 2
T1.6A
1 1
45
3065
4 1
7002
TCET1102
BIAS SUPPLY
3 2
3000 6032 6033 3075 6024
5017 5010
400V_HOT
5011
2003
7005
STP15NK50
5001
7007
HIGH
15
6
SIDE
DRIVE
7
5015 5012
14
4
OA
5016
12 2 7006
OB
STP15NK50
7008
10
FI
LOW
10
SIDE
DRIVE
9
5002
HOT GROUND COLD GROUND
5B01
5 7
7B00
7B01
3 8
7B02
2 9
10
7B05 1
11
12
CONTROL
3B50
3B61
4 1
7B04
TCET1102
3 2
HOT GROUND COLD GROUND
DC-DC
A3
3057
3407 5401
7402
7401
GATE DRIVER
UNDERVOLTAGE
LOCKOUT
+18V OR +12V
2020
2029 2034
5025 +24VA OR +295V
6021 +12V
2022
6041
A1 A1
7015
2045 2039
5026 N.C
+5V2 3052
7010
TS2431
TO
Power-Good = 5V
DISPLAY
if +12V >10V
TO
DISPLAY
VS Voltage
Adj.
2042 2009 +24VB
5021
6031
3076
5030 6045 +30V
6040
5022 2049 2018
2B48
6B07
+AUDIO-POWER
2B51
6B08 -AUDIO-POWER
6B06 +12VS
2B46
6B05 1B33 +5V-STANDBY
7B06
2.5AT
2B45
7B50
CONTROL
AUDIO-PROT
B11C
+12V
CONTROLLER
1M09
TO AMBI-LIGHT
5028 1
MODULE
2 OR 1M09
AB
DFI PANEL
1M90
1
TO 1M90
2
AB
3
DFI PANEL
1P11
8
+5V2
7
Standby 6
Boost 5
TO 1P11
A2
4
SSB
Light_on_of
3
Power-Good 2
DIM-control 1
1319
1
2
3 TO
DISPLAY
4
5
1317
1
2
3 TO
DISPLAY
4
5
1B40
1
FOR SERVICE
2
TO PROVIDE
3
EXTERNAL
SUPPLY
4
H_16770_069.eps
101007