Ssb: Headphone Amp & Muting (B06D) - Philips LC7.2E Service Manual

Circuit Diagrams and PWB Layouts
SSB: Headphone Amp & Muting
1 2
HEADPHONE AMP & MUTING
B06D
A
2902
HP_AUDIO_OUT_L
470n
ITV Connector E
1901
B
SC2_CVBS_MON_OUT_ITV
6 5
2904
HP_AUDIO_OUT_R
470n
C
MUTING CIRCUIT
I911
3911
ANTI_PLOP
10K
D
I913 I915
6914
POWER_DOWN
E
I914
BAT54 COL
I916
3937
STANDBY 0V
10K
7919
BC847BW
F
0V
MUTEn
3139 123 6261.1
1 2
LC7.2E LA
3 4
2901
33p
3902 120K
7901-1
F908
3901
HPIC_LIN I901
2V6
TS482IDT
2
47K
F901 2V6 1
2V6
3
5V3
1
2 2905
3
4 33p
3908 120K
3906
100K
7901-2
F910
3905 F904
HPIC_RIN 2V6 TS482IDT
6
47K
2V6 7
2V6
5
3907
100K
5V3
+3V3_STBY
F905
3V3
I912
0V
7902
BC857BW
+3V3_STBY
3934
4K7
3935
3V3
6916
I917 I918
4K7
BAS316
2940 7917
0V
47u 6.3V BC857BW
+3V3_STBY
3 4
7. 54
5 6
RES
3903
33R
2903
I902 3904
HPIC_LOUT
I904 33R
100u 16V
+5V_SW
2908
220n
I924
2913 RES
3909
220n
33R
2906 I905
I903
3910
HPIC_ROUT
100u 33R
16V
3
3917
1 7911
BC847BW
1K0
2
3
3918
1
7912
BC847BW
1K0
2
3
3913
1
7913
BC847BW
1K0
2
3
3914
1 7914
BC847BW
1K0
2
3
3915
1
7915
BC847BW
1K0
2
3
3916
1 7916
BC847BW
1K0
2
I923
3942
7922
BC847BW
1K0
3943
10K
5 6
7
1900 B7
1901 B2
B06D
2901 A4
2902 A2
2903 B5
2904 C2
2905 B4
2906 C5
A
HP_LOUT
4902 2907 C3
2908 B5
FOR NON SIDE IO
2909 A7
2911
EMC
2910 C7
2911 A7
10n
2912 C7
2909
EMC
F902
2913 B5
10n 2940 E2
3901 A3
3902 A4
3903 A6
B 3904 B6
1900
2
3905 C3
YKB21-5157N
3906 B3
3 1
3907 C3
3908 B4
3909 B6
3910 C6
2910
3911 D2
EMC
F903
3912 D4
10n
3913 D4
2912
EMC
3914 E4
10n 3915 E4
C
3916 F4
HP_ROUT
4903
3917 C4
3918 D4
3934 E3
3935 E2
3937 E1
3938 E2
3940 F3
3942 F5
3943 F6
4901 D3
4902 A7
D
4903 C7
6914 E2
6916 E3
I919
6919 F4
SC1_AUDIO_MUTE_R
7901-1 A4
7901-2 B4
7902 D3
7911 C5
I920
7912 D5
SC1_AUDIO_MUTE_L
7913 D5
7914 E5
E
7915 E5
7916 F5
I921
7917 E3
SC2_AUDIO_MUTE_R
7919 E2
7922 F6
F901 B3
F902 B6
I922
F903 C6
SC2_AUDIO_MUTE_L
F904 C3
F905 D2
F908 A2
ENGAGE
F910 B2
F
I901 A3
I902 B5
I903 C5
I904 B6
I905 C5
I911 D2
G_16860_014.eps I912 D3
250107
I913 E2
I914 E1
7
I915 E2
I916 E2
I917 E3
I918 E4
I919 D6
I920 E6
I921 E6
I922 F6
I923 F6
I924 B5
Item Description
1901 CON V 4P M 1.00 SM SR R
2901 CER1 0603 NP0 50V 33P COL
2902 CER2 0603 Y5V 10V 470N COL
2903 ELCAP SM 16V 100U PM20 COL R
2904 CER2 0603 Y5V 10V 470N COL
2905 CER1 0603 NP0 50V 33P COL
2906 ELCAP SM 16V 100U PM20 COL R
2907 CER2 0603 Y5V 10V 470N COL
2909 CER2 0603 X7R 50V 10N COL
2910 CER2 0603 X7R 50V 10N COL
2911 CER2 0603 X7R 50V 10N COL
2912 CER2 0603 X7R 50V 10N COL
3901 RST SM 0603 47K PM5 COL
3902 RST SM 0603 RC21 120K PM5 R
3904 RST SM 0603 33R PM5 COL
3905 RST SM 0603 47K PM5 COL
3906 RST SM 0603 100K PM5 COL
3907 RST SM 0603 100K PM5 COL
3908 RST SM 0603 RC21 120K PM5 R
3910 RST SM 0603 33R PM5 COL
3917 RST SM 0603 1K PM5 COL
3918 RST SM 0603 1K PM5 COL
4902 RST SM 0603 JUMP. 0R05 COL
4903 RST SM 0603 JUMP. 0R05 COL
7901 IC SM TS482ID (ST00) R
7911 TRA SIG SM BC847BW (COL) R
7912 TRA SIG SM BC847BW (COL) R