Skyworth 5R81A-50E79, Service Manual

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5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
S K Y W O R T H
创 维
CONTROL
分压上拉，根 据 键 控 调 整
1 0K /1 00 K
TO RTD2975
KEY0-in
KEY1-in
LSADC2 LSADC2
IR-IN IR-IN IR-IN
LED_LAMP_OUT
IRRX
LEDG
LSADC0
LSADC1
LED_LAMP_OUT
LSADC1
LSADC0
IR-IN
VID0
VID0
LED_LAMP
LED_LAMP
D3V3
STANDBY_5V
D3V3
D3V3
STANDBY_5V
D3V3
STANDBY_5V
D3V3
LSADC0
LSADC1
LSADC2
LSADC0 <4>
LSADC1 <4>
IRRX <4>
LEDG <4>
LEDG
IRRX
VID0 <4>
RESET#
Size
Document Number
R e v
Date: Sheet o f
Title
Design Check Auditing Modify Rev
A A4
12 17 Thursday, June 20, 2013
IR & KEY INPUT
Check of name Auditing of name Modify Rev
Size
Document Number
R e v
Date: Sheet o f
Title
Design Check Auditing Modify Rev
A A4
12 17 Thursday, June 20, 2013
IR & KEY INPUT
Check of name Auditing of name Modify Rev
Size
Document Number
R e v
Date: Sheet o f
Title
Design Check Auditing Modify Rev
A A4
12 17 Thursday, June 20, 2013
IR & KEY INPUT
Check of name Auditing of name Modify Rev
R278
100R
C291
0.1uF/16V
CN7
CON20-J20-12
POWER_IO
1
KEY1
2
KEY2
3
GND
4
ST_5V
5
GND
6
IR
7
GND
8
LED
9
GND
10
Light
11
3.3V
12
E59
NC_5pF
1
2
R277 4.7K
E57
NC_5pF
1
2
E58
NC_5pF
1
2
L69
150R_1A
E56
NC_5pF
1
2
Q19
2N3904
1
2
3
R272
NC C298
NC
R270
100K
R6
100R/NC
R276
NC_10K
C299
NC
R337 NC_0R
R271
NC_10K
R688
1K
R283
10K
R358 100R
R687 4.7K
E60
NC_5pF
1
2
C296
100pF/10V
C295
100pF/10V
R511 NC
C293
100pF/10V
Q52
2N3904
1
2
3
R510 100R
C292
100pF/10V
R346 100R
R686 10K
C297
100pF/10V
C294
0.1uF/16V
R269
100K
R7 100R/NC
Q34
2N7002
1
2 3