Philips MCD290 Service Manual page 25

CIRCUIT DIAGRAM - MAIN BOARD (TUENR PART)
ONLY FOR MCD295
TUNE1
KST-F404
1
ANT
FM FRONTEND
JACK1
4
FM RF GND
C8
3
104
FM ANT C3
104 C9
100uF
2
AM RF GND
1
AM ANT
TUNER1
CN3
2
1
2P
1
6 1
5 2
4 3
T4
A9452/20382
CT1
11P
J2
VCC VCC
000
J3
000
8 - 6
R1 R2
7
IF-OUT
120 120
C1
R5
330
8
OSC-OUT
10uF
C4
104
R6
330
C10
100uF
R10
C13
220
R8
103
2.2K
R9
+FM
100
C11
VCC1
33pF
R11
RV1
R15
100K
56K
10
0
R38
R12
11
D2 0
1K
BAS316
C22
D3A 224
HN1V02H
R26
47 C21
1uF
D3B
3 6
HN1V02H T6
20402
C6
331
BIRDY FILTER
VCC1
T5
44108
RDS ONLY
R19
4 3
22K
C36
2
C38
2pF
22pF R36
6 1
33K
Q4
C12
BC857C
R20
33pF
C37
22k
560p
BUFFER AM PLIFIE R
T1
11844/44023
R39
4 3
0
2
C2 6 1
104
CF1
10.7M
CF2
10.7M
AM/ FM
IC1
1 33
RIPPLE FM-IF2-IN
2 32
AM- RF AM- AFC
3 31
FM-GND P1
4 30
RF-GND1 P0
5 29
FM-OSC WRITE-EN
6 28
AM- OSC DATA
7 27
Vcc1 CLOCK
8 26
TUNE DGND
9 25
VCO XTAL
24
AF-OUT MO/ST
23
MPX-IN VDD
TEA5762
R27
2K2
C26 C7
474 C31 104
C27 C30 C32 VCC2
15pF
474 2.2uF 470n
C23
224
C28
1uF
4 3
VCC
2
C33
R41
6 1
82pF
100
T7
C41
R29
100uF
R28
511BE/43462
820 R42
820
DISCRIM INATOR
4.7K
R17
1M
C20
R13 Q1
C42
MPX
9014
224
1K
222
C43
224
C39
C40
153
153 R46
22n-USA 22n-USA 220R
8 - 6
ECO-POWER
T3
11845/20591
3 4
2
1 6
T2
11845/20591
3 4
2
1 6
P1
P0
22K
R18
R21 470
R22 470
C14 102
R14
150K
C15
X1
C19 C17 C18
12P
222 221 221
75K
C16
VDD
221
7.8V
R3 R4
VCC1
120 120
C5 C34
104 223 R7
330
R37
11V
VCC2
0
R33
5K6
Q3
8.2V
R30
R34 R35
VDD
BC547C
C29 150 47K 22
1uF
Q2
C35
BC857B
8.9V
+FM
R31
68K
22uF
R43
8.2V
R40 R32
4.7K
AM/ FM
0 10K
C24
224
R16
1M C25
224
Q5
R25 R24
9014
47K
47K
R47
220R
CN1
ENABLE/MPX
1
DATA
2 4P
CLOCK
3
ST/NO
4
R23
470
CN2
VCC
1
RIGHT
2
SGND
3
LEFT
4 5P
5
MPX
R44 R45
000 000