Philips MX3900D Service Manual page 24

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FRONT CONTROL PART - CIRCUIT DIAGRAM
1300 A1
1304 A4
1308 A6
1313 C1
2304 B5
1301 A3
1305 A5
1309 A6
1314 B4
2305 B5
1302 A4
1306 A5
1310 A7
1315 B3
2306 B4
1303 A4
1307 A6
1311 A7
1316 E1
2307 B4
1
+C
1300
+C
1
3330
2
Key1
2K7
3331
3
Key0
2K7
3332
4
Rot_Vol_B
A
10K
5
3333
6
Rot_Vol_A
10K
3334
7
Rot_Jog_B
10K
8
3335
9
Rot_Jog_A
10K
10
LPS_LED
11
RC6
12
Stdby_LED
B
13
+D
14
LedShStr
15
LedShClk
16
LedShData
FE-ST-VK-N
C
1313
1
2
Stdby_LED
RC6
3
4
LPS_LED
D
5
Stdby_Key
6
GND_B
7
+C
FE-ST-VK-N
1316
E
1
GND_B
2
Key0
EH-S
1
6-4
2308 D3
3304 A4
3308 A5
3312 A7
3333 A1
3337 D5
2309 D3
3305 A4
3309 A6
3330 A1
3334 A1
3338 D5
2310 D4
3306 A5
3310 A6
3331 A1
3335 A1
3339 D5
3303 A4
3307 A5
3311 A6
3332 A1
3336 A7
3340 D5
2
3
4
SWEETSPOT
PLAY
3303
3304
150R
220R
GND_B
GND_B
GND_B
EVE
1315
A
B
C
2
3
4
3341 D5
3345 C6
3349 E6
6300 C6
6304 E6
7300 C5
3342 D5
3346 C7
3350 E7
6301 C7
6305 E7
7301 C6
3343 D5
3347 C7
3351 E7
6302 C8
6306 E8
7302 C7
3344 E5
3348 C8
3352 E8
6303 C8
6307 E8
7303 C7
5
6
STOP
PREVIOUS
SURROUND
CLK
TUNING
NEXT
3306
3309
3310
3307
3305
3308
390R
560R
1K2
1K8
270R
820R
GND_B
GND_B
GND_B
GND_B
GND_B
GND_B
EVE
1
3
1314
MT1
MT2
4
5
2
+D
+D
16
6300
SRG8
15
LTL-816TDK3
7300
EN1
74HC4094D
1
STB
3
7301
BC847B
2
4
3337
D
1
120R
5
3338
120R
6
3339
120R
7
3340
120R
14
3341
120R
13
3342
120R
3343
12
120R
11
3344
+D
120R
9
10
8
6304
LTL-816TDK3
7305
BC847B
5
6
6-4
7304 C8
7308 E8
7305 E6
7306 E7
7307 E7
7
8
PROGRAM
TREBLE
BASS
3311
Stdby_Key
3312
3336
2K7
4K7
10K
GND_B
GND_B
GND_B
+D
+D
+D
6301
6302
LTL-816TDK3
LTL-816TDK3
LTL-816TDK3
7302
7303
7304
BC847B
BC847B
BC847B
+D
+D
+D
6305
6306
LTL-816TDK3
LTL-816TDK3
LTL-816TDK3
7307
7308
7306
BC847B
BC847B
BC847B
7
8
A
B
6303
C
D
E
6307

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