Philips PET940 Service Manual page 18

8.0 ELECTRICAL DIAGRAM
MAIN BOARD CIRCUIT DIAGRAM (AUDIO)
C114 C114
R63 R63 3.3K 3.3K
AOUT_R
47U/6V 47U/6V
R96 R96
100K 100K
C115 C115
R64 R64 3.3K 3.3K
AOUT_L
47U/6V 47U/6V
R97 R97
100K 100K
R11 R11
0 0
SPL+
R42 R42
SPR- 0 0
SPR-
L18 L18 C128 C128
HPLOUT 601 601 R76 R76 10 10 220U/6V 220U/6V
R77 R77 LOUT C108 C108 1U 1U
1K 1K
C124 C124
0.1U 0.1U
AUDIO5V
C109 C109 470N 470N
SPL-
C133 C133 470N 470N
C134 C134 470N 470N
+P5V
R81 R81
10K 10K
D4 D4
1
1SS355 1SS355
R80 R80 47K 47K VD18 VD18
1
TFTON DTC124 DTC124
C102 C102
10U/10V 10U/10V
R67 R67 10K 10K
C118 C118 100P 100P
U22A U22A
BA4558 BA4558
R65 R65 3.9K 3.9K
2
1
3
C116 C116 R94 R94
1000P 1000P
10K 10K
C81 C81
10U/10V 10U/10V
R68 R68 10K 10K
C119 C119 100P 100P
BA4558 BA4558
R66 R66 3.9K 3.9K U22B U22B
6
7
5
C117 C117 R95 R95
1000P 1000P
10K 10K
C79 C79
10U/10V 10U/10V
U23 U23
1 24
PGND GND
C135 C135
1U 1U R
2 23
GAIN0 RLINEIN
R11 R11
0 0
3 22
GAIN1 SHTUDOWN
SPL+ C127 C127 220U/6V 220U/6V
4 21
LOUT+ ROUT+
5 20
LLINEIN RHPIN
6 19
LHPIN VDD
C125 C125
7 18
VDD PVDD
0.1U 0.1U
8 17
RIN HP/LINE
SPL- SPR-
9 16
LOUT- ROT-
R74 R74 100K 100K
10 15
LIN SE/BTL
R82 R82
11 14
BYPASS PC-BEEP
10K 10K
12 13
GND PGND
25
GND
TPA0212 TPA0212
MODECON2
2
C120 C120 47U/6V 47U/6V R69 R69 100 100 R98 R98 1K 1K ROUT
R71 R71
R93 R93 4R7 4R7
10K 10K
-5V
C82 C82
0.1U 0.1U
C121 C121 47U/6V 47U/6V R70 R70 100 100 R99 R99 1K 1K
LOUT
R72 R72
R92 R92 4R7 4R7
10K 10K
+P5V
C80 C80
0.1U 0.1U
R78 R78 10 10 L17 L17 601 601 HPROUT
R79 R79
1K 1K
MODECON1
R75 R75 100K 100K
+P5V
VD23 VD23
R100 R100 1K 1K
1
AUDIO_MUTE
2SD601 2SD601
HPROUT
VD24 VD24
R101 R101 1K 1K
1
2SD601 2SD601
HPLOUT
HPROUT
MODECON1
HPLOUT
VD25 VD25
1
3
2
STZ6.2N STZ6.2N
VD26 VD26
1
3
2
STZ6.2N STZ6.2N
JS2 JS2
5
4
3
6
2
1
HP HP
JS3 JS3
5
4
3
6
2
1
HP HP