Toshiba 20VL14 Service Manual - Page 28

Power Amplifier, Tda7499 2x6w, Gnd Ground

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POWER AMPLIFIER 28 OFF_MUTE 6 Q25 1N4148(BAS32L)/SMD SMBT3906/SOT23 SMD D12 2 3 1 2 VAU R184 150/0805 D13 2 1 D11 1 VCC 2 1N4148(BAS32L)/SMD L34 R186 10K/0603 1 C272 + R185 100/0603 100UF/25V6*11 150UH/DR8*10/DIP SS14(1N5819) SMD L_CH VAP D31 3 2 1 VCC COM GND BAV99/SMD R_CH VAP D32 3 2 1 VCC COM GND BAV99/SMD R187 4.7K/0603 R274 10K/0603 R192 4.7K/0603 R193 100K/0603 10 AUDIO_L_OUT 10 AUDIO_R_OUT 6,9 MUTE_AUDIO VAP 105P/0603/Y5V/16V R189 R190 10K/0603 10K/0603 C276 D14 ZD5.1V/0.5W/SMD 2 1 C275 R188 104P/0603/Y5V/50V 15K/0603 C274 + 100UF/25V6*11 U22 1 SMBT3904/SOT23 SMD 5 2 1 Q26 2 3 SMBT3904/SOT23 SMD Q27 3 105P/0603/Y5V/10V R195 C279 7 15K/0603 MUTE IN_L+ VCC 3 OUT_L 4 IN_L- 8 R194 27K/0603 R196 C273 104P/0603/Y5V/50V R191 4.7/1206 L_CH + BEAD 3.5*6*0.8/DIP C278 L35 1000UF/25V/10*17/2Khr L36 BEAD 3.5*6*0.8/DIP + C280 1000UF/25V/10*17/2Khr 1K/0603 C282 11 IN_R+ 105P/0603/Y5V/10V OUT_R 2 R197 R_CH 2 2 1 Q28 1 Q29 3 3 NI NI 9 CENTER IN_R- 10 1 GND 6 GND TDA7499/DIP 27K/0603 R199 1K/0603 R198 4.7/1206 1 D15 NI/SMD + C284 C283 104P/0603/Y5V/50V 2 100UF/25V/6*11 C277 NI/0603 C281 NI/0603 AUDIO_OUT_L 5 AUDIO_OUT_R 5 GND GROUND Title POWER AMPLIFIER Size A4 Date: Document Number TDA7499 2X6W Sheet 11 of Rev 0.01 14

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28
POWER AMPLIFIER
TDA7499 2X6W
0.01
POWER AMPLIFIER
A4
11
14
Title
Size
Document Number
Rev
Date:
Sheet
of
VCC
VAU
VAP
VAP
VAP
L_CH
R_CH
L_CH
R_CH
R274
10K/0603
D31
BAV99/SMD
1
2
3
GND
COM
VCC
D32
BAV99/SMD
1
2
3
GND
COM
VCC
Q28
NI
1
3
2
Q29
NI
1
3
2
R188
15K/0603
R194
27K/0603
R187
4.7K/0603
R197
27K/0603
R199
1K/0603
R184
150/0805
L34
150UH/DR8*10/DIP
D15
NI/SMD
2
1
R191
4.7/1206
U22
TDA7499/DIP
1
2
3
4
5
6
7
8
9
10
11
GND
OUT_R
VCC
OUT_L
MUTE
GND
IN_L+
IN_L-
CENTER
IN_R-
IN_R+
D11
1N4148(BAS32L)/SMD
2
1
+
C274
100UF/25V6*11
R196
1K/0603
C275
104P/0603/Y5V/50V
R186
10K/0603
C282
105P/0603/Y5V/10V
+
C284
100UF/25V/6*11
C276
105P/0603/Y5V/16V
D13
SS14(1N5819) SMD
2
1
Q25
SMBT3906/SOT23 SMD
1
3
2
D12
1N4148(BAS32L)/SMD
2
1
C273
104P/0603/Y5V/50V
C283
104P/0603/Y5V/50V
C279
105P/0603/Y5V/10V
+
C280
1000UF/25V/10*17/2Khr
L36
BEAD 3.5*6*0.8/DIP
+
C278
1000UF/25V/10*17/2Khr
C277
NI/0603
R198
4.7/1206
+
C272
100UF/25V6*11
R185
100/0603
R195
15K/0603
Q27
SMBT3904/SOT23 SMD
1
3
2
Q26
SMBT3904/SOT23 SMD
1
3
2
D14
ZD5.1V/0.5W/SMD
2
1
C281
NI/0603
L35
BEAD 3.5*6*0.8/DIP
R193
100K/0603
R192
4.7K/0603
R190
10K/0603
R189
10K/0603
AUDIO_OUT_R
5
AUDIO_OUT_L
5
AUDIO_L_OUT
10
AUDIO_R_OUT
10
MUTE_AUDIO
6,9
OFF_MUTE 6
GND GROUND