Sharp LC-20SD5E Service Manual page 41

A B
8
7
3
FROM/TO TUNER
C4293
TU_VIDEO_OUT
10 C
4
C4294
FROM/TO POWER I/O
10 C
D_TUNER_CVBS
6
C4208
270P CH
R4209
75
D4217
GND W881
MTZJ12B
B4203
VIDEO IN
R4217_1 C4217
FCM1608KF-601T02 KTA1504S_Y_RTK
TUNER OUT
8.8
GND
68 1/4W
10V 470 YK_P
GND
5
21-Y IN
0
21-R IN
GND
GND
W849
NC
W913
21-G IN
W851
NC
GND
FOR VCR
21-B IN
L IN
GND
4
W853
GND
L4202 R4220
L OUT
22uHNLV25
R IN 100
R OUT
L4203 R4222
RGB-16C
J4205
22uHNLV25 100
C4210
D4218 MTZJ12B
270P CH
3
R4210
W882
GND
75
B4204
VIDEO IN
R4215_1
FCM1608KF-601T02
MONITOR OUT
GND
GND
NC
21-C IN
GND
GND
NC
NC
2
GND
FOR VCR
NC
L4212
L IN
GND 22uHNLV25
W883
GND
L4204 22uHNLV25 R4223
L OUT
R IN 100
R OUT
L4205 R4224
RGB-16C
1
J4206
22uHNLV25 100
A B
H-1
C
L4217 L4219
47uHNLV25 47uHNLV25
R4279
W806 2.1
100
1.5
2 1
5 6
L4220
10uHNLV25
BUFFER
Q4221
R4290 C4295
4.5
47 10 C
R4256
220
W826
R4296
W841
220
W871
L4207 R4248
22uHNLV25 1K
L4206 R4249
22uHNLV25 1K
MUTE SW 0
5.1
MUTE SW
Q4208
Q4204
KTC3875S_Y_RTK
0
KTC3875S_Y_RTK
0
R4261
5.1
10K
0
C4218
68 1/4W 10V 470 YK_P
D4210
R4247
UDZS4.7B
R4239
8.2K
18K
R4250
1K
L4211 R4251
1K
22uHNLV25
MUTE SW 0
MUTE SW
Q4210
Q4205
KTC3875S_Y_RTK
0
KTC3875S_Y_RTK
0
R4264
5.1
10K
0
C
D E
21PIN SCHEMATIC DIAGRAM
(MAIN PCB)
8.9
BUFFER
Q4220
KTC3875S_Y_RTK
NLCV32T
L4210
22uHNLCV32T
DTUNER_H
SCART1_CVBS_IN
P.CON+9V
5.0
R4270
D_TUNER_Y
0.7
100
0
SCART1_Y_IN
D_TUNER_U
SCART1_R_IN
SCART1_G_IN
SCART1_B_IN
D_TUNER_V
SCART1_SW
SCART1_AUDIO_L
R4234
SC1_A_OUT_L
100 SCART1_AUDIO_R
R4233 SC1_A_OUT_R
R4267 100
8.8
6DB AMP R4201
10K
Q4202
4.5 47
KTA1504S_Y_RTK
0
SCART2_Y/CVBS_IN
L4209
P.CON+9V
47uHNLV25
SCART2_C_IN
SCART2_SW
D_TU_AUDIO_L
C4256
SCART1_AUDIO_L
1 B
SCART2_AUDIO_L
D_TU_AUDIO_R
SCART1_AUDIO_R
R4240
SC2_A_OUT_L
100 SCART2_AUDIO_R
R4241 SC2_A_OUT_R
100
R4268
5.1
10K
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
D E
F G
SW
Q4217
KRA103SRTK
5.1 5.0
2.9
2.9
LEVEL SHIFT AUDIO_MUTE
Q4218
2.0
KRC102SRTK 0
1
BUFFER
Q4213
KTA1504S_Y_RTK
5.0
BUFFER
R4272
Q4214
0.7 KTA1504S_Y_RTK
100
0
5.0
BUFFER
R4276
Q4215
0.7 KTA1504S_Y_RTK
100
0
L4214
P.CON+9V
22uHNLV25
6DB AMP
8.9
Q4203
KTA1504S_Y_RTK
8.8
8.8
C4296
4.0 C4216
6DB AMP SCART2_MONITOR_OUT
10 C
Q4212
3.3 2
16V 47 YK
KTC3875S_Y_RTK
R4255
3.0
470
3
SW_A_L
[SC1/DIGITAL]
SC1/DTU_A_SW
4
SW_A_R
3 2 1
[SC1/DIGITAL]
3 2 1
4 5 6
C4237
4 5 6
1 B
C4273
C4241
1 B
1 B
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
F G
H
8
FROM/TO REGULATOR
AT+5V
P.CON+5V
FROM/TO POWER1
7
P.CON+9V
GND
FROM/TO SCALER
SW_CVBS[TU/D_TU]
6
D_TU_Y
D_TU_U
D_TU_V
SCART1_Y_IN
AUDIO_MUTE
SCART2_MONITOR_OUT
SCART1_G_IN
SCART1_B_IN
SCART1_R_IN
SCART2_Y/CVBS_IN
SCART2_C_IN
SCART1_CVBS_IN
5
SC1_A_OUT_L
SC1_A_OUT_R
SC2_A_OUT_L
SC2_A_OUT_R
SW_A_L
SW_A_R
SCART2_AUDIO_L
SCART2_AUDIO_R
SC1/DTU_A_SW
4
FROM/TO SUB MICON/RS-232C
SCART1_SW
DTUNER_H
SCART2_SW
FROM/TO POWER I/O
D_TU_AUDIO_R
D_TU_AUDIO_L
3
D_TUNER_Y
D_TUNER_U
D_TUNER_V
CAUTION: DIGITAL TRANSISTOR
2
CAUTION: DIGITAL TRANSISTOR
PCBF40
CMG114
1
H
H-2