Philips 40PFL4901/F7 Service Manual page 51

Digital Main 1 Schematic Diagram [TYPE A]
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.
4 HOT CIRCUIT. BE CAREFUL.
2.5A 250V
L601 L602
F601
2.5A/250V LINE LINE
FILTER FILTER
AC601
CN601
AC CORD
C604 C614
B R601
SA601
0.22 0.22
1.2M
VARISTOR
W /275V /275V
/1/2W
3
C605 C611
220 220
R614
/200V /200V
560K
R603
560K
R604
560K
BC601
BEAD
Q601
150.8
D TK10P60W
(SWITCHING)
G
C606
1.7
100P Q602
S
/2KV KTC8050S
0
C607
-D-RTK/P
2200P
SWITCHING
CONTROL
1.7
0.4
2
D607
0
TFZVTR27B
Q621
KTC3875S
-Y-RTK/P
OVER
VOLTAGE
0.4
PROTECT
0
0
R623
10K
D609 R609
CES520 100
R611 D608B C609 R612
KDZTR36B 0.039 3.9K
0.22
/2W
C618
10/16V
1
C617
10/16V
A
CAUTION ! :
2.5A 250V
ATTENTION : Utiliser un fusible de rechange de même type de 2.5A, 250V.
C603
OPEN
C602
2200P/250V
C650A
2200P R650
C620
2.2
/630V
OPEN
C616
1000P/250V
D603
D602
1N5406BH
1N5406BH
D650A
SB3200BR
D601 D604
1N5406BH 1N5406BH
D651A
OPEN
C619
OPEN
D652A
SB3200BR
D659A
OPEN
D650B
OPEN
D651B
C612A
R615 OPEN
15K 2200P T601
/630V POWER TRANS
D652B
R616
OPEN
15K
6 7
R617
D659B
15K
OPEN
8
5
D606
RS1JJTD 9
4
10
C651 R653
2
OPEN OPEN
11
C608 R606 R607 D653A
0.033 82 82 SB3A0BH
1 12
D655A
SB3A0BH
R608 D605 D653B
1.5K MM5Z6V2B OPEN
D655B
OPEN
D621
D610
1SS400ST
1SS400ST
R613
330
R621 D623
560 MM5Z30B
C623
IC601
4.7
EL817S1
ERROR
VOLTAGE DET R655
C622 C621 220
9.9 20.3
OPEN 0.1
C610
1000P R657
3.9K
0.4 19.3
C660
OPEN
C666
0.22
19.3
2.5
D660
0
AS431BNTR-E1
HOT COLD
B C
For continued protection against risk of fire,
replace only with same type 2.5A, 250V fuse.
D658 C652 C653 C657 C658 C662 C659
PTZTE2527B 470/25V 470/25V 470/25V OPEN OPEN OPEN
C654 C655 C668 D654B R663 C663 C664
470/16V 470/16V 470/16V OPEN OPEN 4.7 4.7
R656
9.1K
3.3 Q650
R651 D656 D657 R652
KTC3875S
1 RS1BJTD MM5Z11B 33K
-2.8
-Y-RTK/P
(RESET)
C656 R694
0
1/50V OPEN
R654
220
C667
OPEN
R659
R675
68K
100K
R660
3K
R658
10K
D661
1SS400ST
R661
C669
6.8K
100P
Q653
KTC3875S-Y-RTK/P
(SWITCHING)
D
10-3
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
DIGITAL MAIN CBA UNIT
C665
4.7
Q1001
2SA1576UBTLQ
(SWITCHING)
12.9 12.8
R1005
12.1
3.9K
R1001
10K
R667
33K
R1002
3.9K
0
Q1002 R1003
10K
KTC3875S 0.6
-Y-RTK/P
(SWITCHING) C1007 R1004
0
1 47K
0 R669
10K
0.6
0 R668
47K
E
CONTINUE
DIGITAL 2
P-ON+21V
AMP+13V(1)
CONTINUE
DIGITAL 6
AMP+13V
AL+3.3V
CONTINUE
DIGITAL 3
P-ON+21V
RESET
CONTINUE
DIGITAL 6
P-ON-H2
F
PL15.01ASCD1