DVP-FX870, DVP-FX875 - Sony DVD Service Manual (repair manual). Page 10

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DVP-FX870/FX875
3-5
3-6
MCU & KEY
MAIN (2/7)
3-3. MCU  &  KEY
• See page 4-3 for printed wiring board.
MCU_R_OUT
SYSTEM_POWER_EN
DBG
DBG
CB_CHARGE_EN
MCU_R_OUT
MCU_RESET
MCU_XOUT
HOLD
SYS_POW_EN
MCU_DBG_EN
IR_IN
IR_IN
POWER_KEY
MUTE
MCU_XIN
RXD
SYS_POW_EN
VOL_PWM
MCU_DBG_EN
TXD
MCU_RESET
BATTERY_IN
AV_IN_SW
MCU_RESET
CHARGE_EN
VOL_PWM
LED2
AV_IN_OUT_CTRL
SYSTEM_POWER_EN
AV_IN_SW
MCU_XOUT
HOLD
IR_IN
DBG
POWER_KEY
ADAPTER_DET
MCU_RESET
BATTERY_IN
CB_CHARGE_EN
TXD
MCU_XIN
BTL_SE_SW
RXD
BTL_SE_SW
SYSTEM_POWER_EN
AV_IN_OUT_CTRL
MUTE
CHARGE_STATUS_DET
CHARGE_EN
TXD
PANEL_SW
CHARGE_STATUS_DET
ADAPTER_DET
PANEL_SW
SE
AER_DTC
AER_DTC
SE
3.3V
3.3V
BTVCC
P_3V3
3.3V
P_3V3
3.3V
ADVCC
3.3V
P_3V3
3.3V
P_3V3
P_3V3
P_3V3
P_3V3
3.3V
P_3V3
3.3V
P_3V3
MCU_DBG_EN
4
MUTE 7
VOL_PWM 7
SYS_POW_EN
4
AV_IN_SW
6
IR_IN
4,6
CB_CHARGE_EN
RXD 4
MCU_R_OUT
4
TXD 4
BTL_SE_SW 6,7
SYSTEM_POWER_EN
2
AV_IN_OUT_CTRL
6,7
CHARGE_STATUS_DET
2
CHARGE_EN
2
PANEL_SW
4
SE 7
POWER Switch
For DVD connect to 
small TV IR receive
error
MCU UPDATE
Use in Debug and Program.
Infrared Receiver
1
2
3
TLE4913
L
Vb=>8.2V
LED2
H
6.0V<Vb<8.2V
OFF
OFF
L
H
OFF
6.0V<Vb<8.2V
POWER OFF
POWER ON
OFF OFF
L
H
OFF
ON
BATTERY_IN
ADAPTER_DET
Vb=>8.2V
ON
10K
R55
10K
R55
R335
2M
R335
2M
10K
R39
10K
R39
TP7
TP7
C55
100PF
C55
100PF
LED1
GREEN
LED1
GREEN
TXD
TXD
J3
HEADER4 2.0mm/NC
J3
HEADER4 2.0mm/NC
1
2
3
4
TP79
TP79
2N3906
Q9
2N3906
Q9
2
1
3
R22
0R/NC/0402
R22
0R/NC/0402
C52
0.1uF
C52
0.1uF
C47
20pF
C47
20pF
R336
1K
R336
1K
AVSW
AVSW
BATIN1
BATIN1
2N3904
Q11
2N3904
Q11
1
2
3
R334
100K
R334
100K
R32
200K 1%
R32
200K 1%
R36
10K
R36
10K
C41
1000pF
C41
1000pF
TP34
TP34
R43
200K
R43
200K
R28
10K
R28
10K
R49
10K
R49
10K
R33
100K 1%
R33
100K 1%
2N3904
Q10
2N3904
Q10
1
2
3
10K
R46
10K
R46
R24
100K
R24
100K
10K
R51
10K
R51
R48
10K
R48
10K
R35
274R
R35
274R
RXD
RXD
R23
680K
R23
680K
ADAPTER-DET
ADAPTER-DET
TP6
TP6
R31
1K
R31
1K
R26
100K 1%
R26
100K 1%
R21
330R
R21
330R
R337
1M
R337
1M
C43
330pF
C43
330pF
C54
100PF
C54
100PF
C56
10uF/10V
C56
10uF/10V
R29
20K
R29
20K
C49
0.1uF
C49
0.1uF
R30
100K
R30
100K
EC50
47uF/10V
5.0X5.3
EC50
47uF/10V
5.0X5.3
C45
0.1uF
C45
0.1uF
C48
0.1uF
C48
0.1uF
10K/NC
R44
10K/NC
R44
TP8
TP8
TP5
TP5
C51
0.1uF
C51
0.1uF
TP80
TP80
Q7
TLE4913/NC
Q7
TLE4913/NC
3
2
1
10K
R53
10K
R53
10K
R40
10K
R40
10K
R45
10K
R45
10K
R52
10K
R52
MUTE
MUTE
R41
10R
R41
10R
C53
0.1uF
C53
0.1uF
C46
20pF
C46
20pF
SW1
SSS7A0101
SW1
SSS7A0101
HOL
D
1
C
2
NC
3
ON
4
10K/NC
R37
10K/NC
R37
10K
R42
10K
R42
10K
R47
10K
R47
1K
R50
1K
R50
2N3904
Q12
2N3904
Q12
1
2
3
TP9
TP9
Q45
2N3904
Q45
2N3904
1
3
2
2N3904
Q6
2N3904
Q6
1
2
3
R20
300K 1%
R20
300K 1%
R25
100K
R25
100K
R27
0R
R27
0R
10K
R38
10K
R38
C42
1000pF
C42
1000pF
C44
10uF/10V
C44
10uF/10V
LED2
ORANGE
U6
U6
Z8F0822
PC0/T1IN
1
PA6/SCL
2
PA7/SDA
3
/RESET
4
Vss
5
XIN
6
XOUT
7
Vdd
8
PC5/MISO
9
PC4/MOSI
10
PC3/SCK
11
PC2/SS
12
PA0/T0IN
13
PA1/T0OUT
14
PA2/DE0
15
PA3/CTS0
16
PA4/RXD0
17
PA5/TXD0
18
PC1/T1OUT
19
DBG
20
AVdd
21
AVss
22
VREF
23
PB4/ANA4
24
PB3/ANA3
25
PB2/ANA2
26
PB1/ANA1
27
PB0/ANA0
28
10K
R54
10K
R54
2N3904
Q13
2N3904
Q13
1
2
3
C253
330pF/NC
C253
330pF/NC
IR1
IR_D3P
IR1
IR_D3P
1
2
3
POWER_KEY
POWER_KEY
10K/NC
R56
10K/NC
R56
Q5
2N3904
Q5
2N3904
1
3
2
Q43
A3212-DIP
Q43
A3212-DIP
3
2
1
C50
0.1uF
C50
0.1uF
Y1
11.0592MHZ
Y1
11.0592MHZ
R34
10K
R34
10K
H
L
POWER
CHARGE
>
 HOLD/POWER 
.
C
A
D
3
4
8
7
2
B
5
1
E
G
H
I
F
6
9
12
10
11
MAIN BOARD (2/7)
13
14
15
16
J
K
Display
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