Audio Circuit - Philips FW-V720 Service Manual

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AUDIO CIRCUIT

1
A
4u7 2260
3265
AOL-
10K
4u7 2269
3281
AOL+
10K
B
VR
C
4u7 2246
3261
AOR-
10K
4u7 2245
3282
AOR+
10K
D
VR
2.4V
AGND AGND AGND
E
+5V
7211
LF35A
IN OUT
GND
F
ALL DC VOLTAGES ARE MEASURED UNDER 5V SUPPLY CONDITION
1
8-9
2 3 4
2251
1n
3266
4K7
AGND
4
2.4V
2252 10u
2
3285 LEFT
2.4V
1
100R
2.4V
NJM4560M
8
3
7207-A
AGND
AGND
2250
1n
3262
4K7
~160ms
AGND
2.4V
4
2242 10u
6
3286
2.4V
7
100R
2.4V RIGHT
NJM4560M
8
5
7207-B
AGND AGND
4.5V
+5V
5211
3K9 3255 3254 3253
47R 47R 33R
3256
3.5V
5209
VDD3
2 3 4
5 6
+5V
0.5ms
0.5ms
+5V
CD10_RST TIMING
CD10_RST
3278
7214
BC847BW
22K
RAB
3251
4.8V
5216
4R7
AGND AGND
5 6
Published in Heiloo, Holland.
8-9
7 8
3259
VCC
10K
33 32 31 30 29 28 27 26 25 24 23
P2_4
34 P0_3
P2_3
35 P0_2
P2_2
36 P0_1
P2_1
37 P0_0
4.4V
38 VDD P2_0
P83C528EBB
NC2
39 NC4 7212
40 P1_0 VSS
8-bit microcontroller
XTAL1
41 P1_1
42 P1_2 XTAL2
0V
P3_7
43 P1_3
44 P1_4 P3_6
1 2 3 4 5 6 7 8 9 10 11
VAA
AGND
3139 118 54470 ...88170 sh3 ... 3448 pt 1 dd wk107
7 8
1/3/16
9 2202 F3
2203 F3
2204 F3
2209 F1
2212 F2
2221 F6
2237 E1
2238 F7
2240 E1
A
2242 C3
2243 F5
2244 E2
2245 D1
2246 C1
2249 F2
2250 C2
2251 A2
2252 B3
2255 F6
2257 F6
B
2260 A1
2266 D1
2267 B1
2269 B1
22
2274 D3
21
2275 B3
2278 C5
20
2283 B6
3215 A8
19
3216 A8
18
3220 A8
3222 A9
C
17
3251 E4
3252 A5
16
3253 D4
15
3254 D3
1.9V 3255 D3
14
3256 D2
2.2V
3257 E2
13
3260
3258 D2
12
3259 B7
1M
3260 D9
12MHz 5202
3261 C1
D 3262 C2
3263 A8
3264 A8
12M CST
3265 A1
3266 A2
3267 B2
3268 A5
3269 B5
3277 C6
3278 D6
3279 D6
3281 B1
E
3282 D1
3283 B3
3284 D3
3285 B3
3286 C3
5202 D9
5209 E2
5211 D2
5216 E5
5217 B5
6208 F5
7207-A B2
F
7207-B D2
7211 E1
7212 C8
7214 D5
9