Ssb: Audio - Philips LC7.2E Service Manual

Circuit Diagrams and PWB Layouts

SSB: Audio

1 2
AUDIO
B07
A
B
C
* LCD PDP
3A03 10K 6K8
3A04 12K 22K
3A06 10K 6K8
3A07 10K 6K8
3A08 12K 22K
3A11 10K 6K8
*
IA01
FA05
D AUDIO_LS_L 3A03
2A11
IA05
* * 3A06
2A15
FA06
3A07 2A16
IA10
*
FA09 IA11
AUDIO_LS_R 3A11
2A20
VSSA
FA12
E ENGAGE
VSSA
STANDBYn
F
G
3139 123 6261.1
1 2
LC7.2E PA 7.
3 4 5
+AUDIO_POWER
+AUDIO_POWER
VDDA VDD
7A01 GNDSND GNDSND
IA02 TDA8932T
1u0
Φ
* VDDA
VDDP
3A04
2A12 2 27
IN1P CLASS D OUT1
220p
-2V8
POWER
IA06
1u0 3 22
IN1N OUT2
AMPLIFIER
1u0 IA09 -2V8
* 15 4 2V6
IN2P DIAG
3A08
2A19
-2V8
220p
14 30
IA12 IN2N HVP1 NC
1u0 -2V8
IA13
2A22 100n 12 19
INREF HVP2 NC
2A24 100n -7V6
3A13 39K IA15 10 28 8V9
OSCREF BOOT1
31 21 3V9
NC OSCIO BOOT2
IA18
GNDSND 11 25
HVPREF STAB1
-8V2
IA19
2A29 100n 18 24 -1V3
DREF STAB2
4V7
IA33
3A26 22K 5
ENGAGE
3V2
3A19 IA21
6 2A30
POWERUP
100n
-2V6
10K
IA22
13
TEST
EMC
VSSP VSSD|HW
2A32
CGND VSSA
1n0
VSSA
GNDSND GNDSND VSS
GNDSND
GNDSND
3 4 5
47
6 7 8
5A07
IA40
RES 4A01
+AUDIO_POWER_+12V_DISP
60R
RES 4A02
IA41
3A02
GNDSND
IA24
3A01 10R 11V9
VDDA
2A01
100n
FA02
5A06
-AUDIO_POWER
GNDSND
IA26
5A05 30R 12V2
VDD
FA01
2A04
220u 25V
GNDSND
5A03
IA34
IA23 22u 2A13
220n
3A09
10R
2A14
2A17
470n
1n0
IA35
2A21
IA03
1n0
IA07
EMC 2A18
IA36 GNDSND
FA04 1n0
2A35
GNDSND
1n0
2A45
1n0
1M0 2A28 2A23
3A12
470n 1n0
2A25 15n
GNDSND
5A04
IA14
IA37
IA20 22u 2A26
2A27 15n
IA16
220n
3A15 1M0 3A17
10R
IA38
2A31
1n0
VSS
IA39
2A36
1n0
GNDSND
GNDSND
6 7 8
9 10 11
IA25
10R -12V2
VSSA
2A02
100n
GNDSND
IA27
+12V2
30R
VSS
2A08
220u 25V
GNDSND
IA04
2A37 3A05
220n 22R
GNDSND
TO SPEAKERS
1735
B4B-PH-K
FA07
FA08
FA10
FA11
VDD
2A38 IA17 3A14
7A05
22R
220n BC857BW
GNDSND IA30
DC_PROT
FA32
IA31
7A06
BC847BW
IA29
3A27
220K
GNDSND
3A28
7A07
BC847BW
GNDSND
220K
DC-DETECTION
GNDSND
9 10 11
1735 D11 IA02 D3
2A01 B7 IA03 D6
2A02 B9 IA04 D9
B07
2A04 C7 IA05 D3
2A08 B9 IA06 D4
2A09 D5 IA07 D6
2A10 D5 IA09 D4
2A11 D3 IA10 D3
A
2A12 D4 IA11 E3
2A13 D8 IA12 E3
2A14 D8 IA13 E4
2A15 D3 IA14 E6
2A16 D3 IA15 E4
2A17 D8 IA16 E6
2A18 D6 IA17 E9
2A19 D4 IA18 E5
2A20 E3 IA19 E4
2A21 D7 IA20 E6
2A22 E3 IA21 F4
B 2A23 E8 IA22 F4
2A24 E3 IA23 D6
2A25 E6 IA24 B7
2A26 E8 IA25 B9
2A27 E6 IA26 B7
2A28 E8 IA27 B9
2A29 E3 IA29 F10
2A30 F6 IA30 E10
2A31 F7 IA31 E10
2A32 F4 IA33 E4
2A33 F5 IA34 C8
2A34 F5 IA35 D7
C
2A35 E7 IA36 D7
2A36 F7 IA37 E8
2A37 D8 IA38 E7
2A38 E8 IA39 F7
2A40 F3 IA40 A7
2A41 F9 IA41 A6
2A45 E7
2A46 A6
2A47 B6
3A01 B6
3A02 B8
3A03 D2
D
3A04 D3
3A05 D9
1 LEFT +
3A06 D2
2 GND
3A07 D2
3 GND
4 RIGHT - 3A08 D3
3A09 D7
3A11 E2
3A12 E6
3A13 E3
3A14 E9
3A15 E6
E 3A17 E7
3A19 F3
3A26 E3
3A27 F9
3A28 F9
3A29 E10
3A30 E10
3A31 F11
4A01 A6
4A02 A6
5A03 C7
5A04 E7
F
5A05 B6
5A06 B8
5A07 A6
7A01 D4
7A05 E11
7A06 F10
7A07 F10
FA01 C6
FA02 B8
FA04 D6
FA05 D2
FA06 D2
G
FA07 D11
FA08 D11
FA09 E2
FA10 D11
FA11 D11
G_16860_015.eps
FA12 E2
240107
FA32 E11
IA01 D3