5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
3
E
3
2N3906
1
2
B
C
2N3904
B
C
E
1
2
CIRCUIT DIAGRAM-AUDIO&VIDEO
7.0 ELECTRICAL DIAGRAM
AU_R_OUT
+Vcc
AU_R_OUT
AC
+Vcc
AC
AU_L_OUT
AU_L_OUT
AV-OUT-R
+9VIN
+5V
SPR_R-
AR-A
HP_DET1
HP_DET1
SPR_L+
AL+A
HP_L_OUT
HP_DET
HP_DET2
SPR_R+
AR+A
HP_DET2
AMP_POWER
AL+A
AL-A
AL-A
SPR_L-
AV_DET
AMUTE
VOL_CONTROL
+3.3V
HP_R_OUT
HP_R_OUT
HP_L_OUT
AR+A
AR-A
SPR_L+
SPR_R-
VOL_CONTROL
HP_DET
A_R_SPEAKER
SPR_L-
SPR_R+
A_L_SPEAKER
AMP_POWER_CTL
AMP_POWER_CTL
IC_MUTE
IC_MUTE
AV-OUT-L
DVD_CVBS
AV-OUT-L
AV-OUT-R
DVD_CVBS
AMUTE_L
AMUTE_R
A_L_SPEAKER
A_R_SPEAKER
CVBS
2
AOUT_R
2
AOUT_L
2
+9VIN
1
+5V
1
VOL_CON_PWM
2
AMP_POWER
2
AV_DET
2
AMUTE
2
+3.3V
1,2,3,4
VGND
VER
VER
VGND
+9VIN
+5V
+5V_AMP
+5V_AMP
+5V_AMP
+3.3V
VGND
+5V_AMP
+5V_AMP
+3.3V
R124
47K
R145
NC
EC66
220uF/10V
R2
20K
R146
36K
C130
0.1uF
C212
2.2uF/6.3V/0402
R73
10K
R222
1K
D21
BAT54C
R9
10K
C128
1000PF
U15
G1450
1
2
3
4
5
6
7
8
9
10
12
11
13
14
15
16
MUTE
SHUTDOWN
RIN-
BYPASS
GND
LIN-
VOLUME
VOLMAX
LOUT-
VDD
GND
LOUT+
SE/BTL
ROUT+
VDD
ROUT-
C208
1uF
Q10
3904
1
2
3
L34
FB2K2
R217
10K
+
EC38
10uF/10V
1
2
R3
20K
C213
10PF
C3
NC
R129
NC
C211
0.1uF
R208
100K
R150
100K
R258
100K
R209
100K
R213
75
R133
100K
+
EC35
10uF/10V
1
2
EC67
220uF/10V
EC34
10uF/10V
2
1
R211
75
C215
10PF
R134
47K
R155
10K
C216
10PF
L33
0
1
2
R151
56K
Q1
3906
3
2
1
R162
1K
R136
10K
R218
100R
R148
0
C214
10PF
+
EC28
100uF/10V
1
2
C129
820P
C123
100P
Q4
SI2307
1
3
2
R132
75
+
-
U12B
NJM4558-SOP-8
5
6
7
8
4
R233
1K
+
EC40
22uF/25V
1
2
R207 750R
ER1
EARPHONE
1
4
5
2
3
6
7
R126
5.1K
L37
22UH/CD43
C122
22P
R
138
100K
JP5
PIN HEADER 1X4
1
2
3
4
R212
75
R
141
10K
+
EC3
10uF/25V/NC
1
2
R165
1K
C126
820P
C209
0.1uF
R220
10K
+
EC41
10uF/10V
1
2
ER2
EARPHONE
1
4
5
2
3
6
7
EC37
10uF/10V
2
1
+
-
U12A
NJM4558-SOP-8
3
2
1
8
4
R137
5.1K
+
EC64
220uF/10V
D1
10V
1
2
R
140
100K
R128
5.1R
C121
68PF
Q10
3904
1
2
3
C28
0.1uF
R210
75
C127
68PF
AV1
AV/OUT-JACK
6
7
5
4
9
3
8
1
2
6
7
5
49
3
8
1
2
R127
0R
L36
FB2K2
R147
0
C1
NC
C204
1uF
C207
2.2uF
R130
36K
R125
10K
C125
1000PF
L39
FB600R
R214
10K
R144 0R
C4
0.1uF
R149
51K
C131
0.1uF
L32
1.8uH
L35
FB2K2
C124
180PF
Summary of Contents for PET944
Page 7: ...3 0 INSTRUCTION FOR USE ...
Page 8: ...3 0 INSTRUCTION FOR USE ...
Page 10: ...Remove the 2pcs screws and cabinet on the TFT and IR board ...
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