Magnavox 26MF301B Manuel de service Page 43

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Vue de la page 42
10-6
AUDIO SIGNAL
GND
VCC
IC871
NJM4558M(TE1)
1234
5678
20KR891
270PC875
47K
R879
2.2
C884
100
R881
100K
R885
100K
R883
270PC876
20KR892
47K
R880
2.2
C885
100
R882
100K
R886
100K
R884
6800P
C878
6800P
C877
0.1
C879
100/16V
C880
2.2
C882
2.2
C883
WIRE
L871
2.2
C874
100K
R874
JK872
3300P
C872
560
R872
100K
R873
560
R871
JK871
3300P
C871
KTA1267
-GR-AT/P
Q874
1K
R888
22K
R887
2.2
C873
1K
R877
1K
R878
KTC3198-Y-AT/P
Q872
KTC3198-Y-AT/P
Q871
KTC3198-Y-AT/P
Q873
22K
R893
1000P
C216
10K
R218
OPEN
C212
1
C218
0.1
C217
100K
R213
0.1
C201
KTC3198-Y-AT/P
Q205
10K
R216
OPEN
C213
10
R210
KTC3198-Y-AT/P
Q203
1234
5678
VCC
VEE
IC201
TL3472CDR
1
R208
Q204
KTA1267-GR-AT/P
15K
R219
10
R212
1K
R220
47/25V
C219
330
R217
VCOM 10
LCD+13V 3
P-ON+3.3V 7
VGH 4
CN201
GND 1
LCD-6V 8
GND 11
LCD+13V 2
22/50V
C210
KTC3198-Y-AT/P
Q202
D202
1SS133
1K
R206
2K
R204
100K
R207
OPEN
R203
100K
R201
0.1
C207
1K
R202
Q201
KTA1267-GR-AT/P
OPEN
C208
OPEN
C209
OPEN
R205
2.2/50V
C204
KTC3198-Y-AT/P
Q212
10K
R248
6KEY-IN1
CN101
1GND
4LED1
3AL+3.3V
2REMOTE
5P-ON-H1
KTC3198-Y-AT/P
Q172
KTC3198-Y-AT/P
Q171
22K
R172
22K
R175
OPENR173
OPEN
R174
LCD+24V
LCD-6V
LCD+13V
P-ON+3.3V
AUDIO(L)-OUT
AUDIO(R)-OUT
BACKLIGHT-SW
P-ON-H1
OE2
BACKLIGHT-ADJ
VCOM-PWM
PROTECT3
REMOTE
LED1
AL+3.3V
P-ON+9V
KEY-IN1
AUDIO-MUTE
OPEN
R821
OPEN
C206
OPEN
R215
JS201
OPEN
OPEN
R221
LCD-P-SAFETY
OPEN
C220
OPEN
R222
OPEN
Q206
OPEN
R249
JS202
0.1
C202
OPEN
C675
0.1
C203
LED-R
0
R876
0
R875
0
R209
0
R211
0
R214
GND 9
P-ON+3.3V 6
GND 5
47K
R412
INV+35V9
2 BACKLIGHT-SW
CN631
1 PROTECT3
4 GND
3 BACKLIGHT-ADJ
INV+35V
5 GND
6 GND
7 GND
8 GND
INV+35V10
INV+35V11
D422
1SS133
10K
R413
XWVUTS
4
3
1
2
POWER SUPPLY CBA
0
(OP AMP)
(MUTE DRIVE)
(AUDIO-MUTE)
(SWITCHING)
(V-COM DRIVE)
(COMPARATOR)
(V-COM DRIVE)
(V-COM DRIVE)
TO LCD MODULE
ASSEMBLY
(SWITCHING)
(SWITCHING)
TO FUNCTION
CBA CL104B
(SWITCHING)
(SWITCHING)
CONTINUE
POWER 1
CONTINUE
POWER 1
CONTINUE
POWER 1
CONTINUE
POWER 1
CONTINUE
POWER 3
AUDIO(L)
-OUT
AUDIO(R)
-OUT
(SWITCHING)
(AUDIO-MUTE)
0
0.1
-0.9
0.8
0
5.2
3.4
22.2
22.8
0.3
0
5.2
0.4
0.5
0
5.5
-0.9
20.0
0
1.0
0
3.4
3.4
3.0
0
0
22.6
5.5
0.1
-0.9
13.1
0
0.4
0.8
0
0
0
4.5
0
4.5
0
5.2
4.5
5.25.4
4.5
4.5
13.1
00
4.5
9.2
0
13.1
13.1
22.7
0
0
0
3.4
3.4
-5.6
5.2
TO INVERTER
CBA WH1001
FL11.3SCM4
Power Supply 4 Schematic Diagram
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