Philips MX3900D Service Manual page 20

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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
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
2309 D3
3305 A4
3309 A6
3330 A1
3334 A1
2310 D4
3306 A5
3310 A6
3331 A1
3335 A1
3303 A4
3307 A5
3311 A6
3332 A1
3336 A7
2
3
SWEETSPOT
3303
150R
GND_B
GND_B
EVE
1315
A
B
C
Stdby_Key
2
3
3337 D5
3341 D5
3345 C6
3349 E6
6300 C6
6304 E6
3338 D5
3342 D5
3346 C7
3350 E7
6301 C7
6305 E7
3339 D5
3343 D5
3347 C7
3351 E7
6302 C8
6306 E8
3340 D5
3344 E5
3348 C8
3352 E8
6303 C8
6307 E8
4
5
PLAY
STOP
PREVIOUS
NEXT
SURROUND
CLK
3304
3306
3307
3309
3305
3308
220R
390R
560R
1K2
270R
820R
GND_B
GND_B
GND_B
GND_B
GND_B
GND_B
EVE
1
3
1314
MT1
MT2
4
5
2
+D
16
SRG8
15
7300
EN1
74HC4094D
1
STB
3
2
4
3337
D
1
120R
5
3338
120R
6
3339
120R
7
3340
120R
3341
14
120R
13
3342
120R
12
3343
120R
3344
11
+D
120R
9
10
8
4
5
6-4
7300 C5
7304 C8
7308 E8
7301 C6
7305 E6
7302 C7
7306 E7
7303 C7
7307 E7
6
7
PROGRAM
TREBLE
BASS
TUNING
3310
3311
3312
3336
Stdby_Key
1K8
2K7
4K7
10K
GND_B
GND_B
GND_B
GND_B
+D
+D
+D
6300
6301
6302
LTL-816TDK3
LTL-816TDK3
LTL-816TDK3
7301
7302
7303
BC847B
BC847B
BC847B
+D
+D
6304
6305
6306
LTL-816TDK3
LTL-816TDK3
LTL-816TDK3
7305
7306
7307
BC847B
BC847B
BC847B
6
7
8
A
B
+D
6303
LTL-816TDK3
C
7304
BC847B
D
+D
E
6307
LTL-816TDK3
7308
BC847B
8

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