Digital Main 1 Schematic Diagram [Type G] - FUNAI LF320EM4 A Service Manual

Digital Main 1 Schematic Diagram [TYPE G]

CAUTION !
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F602) 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.
HOT CIRCUIT. BE CAREFUL.
4
2.5A 250V
L601
F602
2.5A/250V LINE
FILTER
AC601
CN601
AC CORD
C604 C614
B R601
SA601
0.22 0.22
1.2M
VARISTOR
W /275V /275V
/1/2W
3
C605
330
R614
/200V
470K
R603
470K
R604
470K
Q601
239.0
D TK7P60W
(SWITCHING)
G
C606
470P 19.1
S
/2KV
0.5 Q602
C607
2SC5344SY
2200P
SWITCHING
CONTROL
19.1
0.7
2
D607
0
TFZVTR27B
Q621
KTC3875S
-Y-RTK/P
OVER
VOLTAGE
0.7
PROTECT
0
0
R623
10K
D609 R609
CES520 100
R605 D608 D608A R615 C609 R612
OPEN KDZTR36B 0.068 5.6K
0.36 OPEN
/2W
R616
OPEN
R617 C671
OPEN 10/16V
1
C672
R618
10/16V
OPEN
R619
OPEN
A
CAUTION ! :
2.5A 250V
ATTENTION : Utiliser un fusible de rechange de même type de 2.5A, 250V.
DIGITAL MAIN CBA UNIT
C603
1000P/250V
C602
1000P/250V
C616
1000P/250V
D602 D603
1N5399BE 1N5399BE
D601 D604
SA602 GT601
1N5399BE 1N5399BE
OPEN OPEN
C650
680P
R650
/630V 2.2
R602
2.7/5W
D651
SB3150BH
D650
SB3150BH
T601
D655
POWER TRANS
SB3A0BH
1 12
D653
SB3A0BH
11
2
C654 C655
10 470/16V 470/16V
BC601
BEAD
4
9
5
C608 R606 R607
8
0.015 180 180
6 7
R608 D605
1.5K MM5Z4V3B
D621
D610
1SS400ST
1SS400ST
R613
330
R651 D656
1 GR1B
R621 D623
560 MM5Z30B
C656
1/50V
C623 C624
IC602
4.7 OPEN
EL817S1
ERROR
VOLTAGE DET R655 R654
C622 C621 220 220
17.7 20.7
OPEN OPEN
C610
R657
1500P
3.9K
0.7 19.7
C666
0.22
C660 R658
0.22 2.7K
19.7
2.5
D660
0
AS431BNTR-E1 C669
100P
HOT COLD
B C
For continued protection against risk of fire,
replace only with same type 2.5A, 250V fuse.
D1006 R1020
MM5Z30B 360K
R1023
R1021
10K
240K
R1024 R1022
10K 22K
D1005
1SS400ST
R1027 R1013
22K 36K
C1014
R1028 R1029
OPEN
9.1K 9.1K
C652 C653
470/25V 470/25V
R1005
C1025
100K
OPEN
R1014
24K
C657
D654A D654 R663
R1011
470/16V
PTZTE2520B OPEN OPEN R1004
2.2K
10K
3.3 Q650
D657 R652
KTC3875S
MM5Z11B 56K
-3.0
-Y-RTK/P
(RESET)
R693
0
OPEN
R653
33K
R659
R675
68K
100K
R660
R667
3K
33K
D661
1SS400ST
R661
6.8K
0 R669
10K
Q653 0.6
KTC3875S-Y-RTK/P
(SWITCHING)
0 R668
47K
D
10-30
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
L1001
C1001 C1002 C1003 C1004 C1005
100uH
470/25V 470/25V 1 1 OPEN
D1002
SK210TD
Q1001
AP18T10AGH-HF
C1006 C1007 C1009 C1010 C1011 (SWITCHING)
53.5
C1018 D
47/100V 47/100V 1/100V 1/100V 1/100V
OPEN
G
12.3
D1001
S
OPEN 0.7
L1002
BEAD
R1033
OPEN
R1032
OPEN
IC1001
BD9486F-GE2
LED BACKLIGHT
DRIVER
5.0 12.7
1 VCC 16
C1019 LDO
1 3.0 0.3
2 ISW 15
1.9 12.3
3 OVP LOGIC DRIVE 14
R1025
1K
3.6 12.7
4 ULVS 13
C1023
0.22
5.4 0
5 GND 12
R1026
FAIL
51
2.9 0.7
6 DETECT 11
R1030 C1017
C1020
120 2.2
0 2.3
2200P
7 NU 10
LOGIC DRIVE
C1016
2.1 1.9 OPEN
8 NU OSC 9
C1015
R1012
0.047
100K
R1002 C1012
39 1
R1006 R1007 C1024
10K 100K OPEN
12.9 12.9
Q1051
2SA1576UBTLQ R1055
R1051 12.2
3.9K
10K (SW+13V)
D405
R1052 OPEN
3.9K
Q1052 0
R1053
KTC3875S 10K
0.7
-Y-RTK/P
(SWITCHING)
R1054 C1057
0
47K 1
D663
OPEN
E F
C1022
1
D1004
OPEN
R1031
10
C1021
OPEN
R1019
200
R1015 C1013
0.18/1W 1000P
TO LCD PANEL
CN1001
ASSEMBLY
54.2
1 VLED
0.7
2 ILED
0.7
D
Q1003
G
AP18T10AGH-HF
12.7
(SWITCHING)
S
0.7
GP001
R1009
OPEN
0.82
R1010
0.68
R1035
GP002
0.68
D1007
OPEN
OPEN
CONTINUE
DIGITAL 5
BACKLIGHT-SW
BACKLIGHT-ADJ
PROTECT3
PROTECT1
P-ON-H2
D406
CONTINUE
OPEN
DIGITAL 2
RESET
CONTINUE
DIGITAL 5
AMP+13V
AL+3.3V
CONTINUE
DIGITAL 2
P-ON+21V
R677
10K
G
FL14.10GSCD1