Circuit Diagram - Tuner Board; Tuner Board Eco6; Systems-Cenelec - Philips MCD298 Service Manual

CIRCUIT DIAGRAM - TUNER BOARD

1 2 3

TUNER BOARD ECO6

/ SYSTEMS-CENELEC

USA
1101
A
YKD21 USA
2105
1130
3
100n C-PAD
2
1
A
1110
YKD31-0432
1102
FM FRONTEND
T102 1
1
MIXER
B
FM 75 OHM
0V
ANT
2
GND VCC
3 4
6 5
2 9
C
T107
LW only
D
0V
3108
0V 7104
BC337-40
0.7V
2K2
P01 LW =HIGH
MW/LW-RF
E
AM FRAME AERIAL
MW
5102
1103
8 7
T105
2 T106 4101 * 6 1
5 2
1
XH-S
4 3
7KL
*
F
B
LW
5103
3
4
2
1
6
8 7
G
VDD VDD
8.3V
H
7.5V
P0 3125
8V BC857B
P01
6.7V 7109
10K
3128
LW=HIGH 0V
7.4V
2K2
I
marked components not for LW version
1 2 3
6 - 1
4 5 6
FE450
3190 T104 3191
7 0V
120R 120R
IF-OUT
8 0.1V
D
OSC-OUT
10
3194
2K2
+FM
3195
100R
C
T109
3105
220R
T110
VCO
6105-1 2 3142
1
T111
7
3141
HN1V02H
56K
100K
1
5115
4
T112
5
6105
1 8
2 7
3
LW only
3 6
7105
BC337-40 4 5
HN1V02H
0.7V
0.1V
RDS only
AM-OSCILLATOR
P0 MW
5123
4 3
3176
2
6 1
8 7
LW
5122
7122
0V
0V 4 3
BC847C
0V
0V 2
7124
BC847C
0.7V
6 1
8 7
4 5 6
7 8 9 10
AM-IF1
5111 450kHz
4 3
T113
2
2150
6 1
100n
8 7
T115
FM-IF1 FM-IF2
5109 5110
1 3 3 1
I O O I
2128
G 2 2 G
10u AM_FM
7101
TEA5762 44 43 42 41 40 39 38 37 36 35 34
2165
AM DET
100n
2V
2129
1 AM-IF
RIPPLE
AGC
FM
100u
AM AM
IF1
2
0V AM-RF
FRONTEND MIXER
CTRL
3
FM-GND AM FM
AGC
AM
IF IF2
OSC
4
RF-GND1
AGC
CONTROL
5
0.1V FM-OSC WRITE-EN
PRE- MULTI-
SCALER PLEXER
0V
6 AM-OSC
AGC
RIPPLE VSTABA VSTABB
VDD
7.8V 7 VCC1
VCC1
8.2V STABILIZER
AGC AM
1.6-8V 8 I-TUNE DET
CHARGE
1-8V PUMP
FM
1V 9
VCO XTAL
DET
1.3V
VCC2 OSC
0.7V 10 AF-OUT
MONO/
STEREO
3135
11
MPX-IN STEREO
VDD
1.2V
1K AFC
DECODER
VCC2
6
12 13 14 15 16 17 18 19 20 21 22
8
7
VCC2
2 1
BIRDY FILTER
470n
2164
2
VCC1
5119
4 3
2169
3144 MPX
1.3V
2
1K to 1120
2n2
pin 5
0.7V BC857C 1
7103 6
33K
8 7
MPX
DISCRIMINATOR
BUFFER AMPLIFIER
0.7V 3137 P0
0.1V 22K
MW=HIGH
7 8 9 10
LEGEND
...V FM mode stereo
* ... only assembled in FM/AM-version
...V MW mode
p ...for provision only
USA ... for USA version only
EVM
V ...V LW mode
LW ... for LW version only
voltages measured while
set is tuned to a strong
transmitter
6 - 1
11 12 13
VERSION PROGRAMMING COMPONENTS
VERSION
6120 3156 3157 3170
/00 /02 FM/MW/LW
AM-IF2
/00 /02 FM/MW
5112 450kHz
3 4
T114
/01 FM/MW
2
1 6
/14 FM-OIRT/MW
7 8
7P
/17 FM/AM
AM-AFC
component mounted
5114 450kHz
3 4
2
1 6 VERSION DETECTION
7 8
7P P1 6120
1.2V
BAS216
0.7V
33
FM-IF2-IN
P1 0.2V
32 0V
AM-AFC 7111
1.4V BC847C
P0
31
P1 7.5V
30 7.5V
P0
0.1V
3161
29
0V
22K
0V 3160
DATA 28
470R 152 kHz, 50mVpp
5V
0V 3159
CLOCK 27
3169 2166 470R
DIG-GND 26
150K
1n
0V
5121
2167 stereo mono
25 1.4V
3
12p
DT-381 75 kHz
24 stereo 0.2V
mono 4.8V
23
3158 T123
8.2V
STEREO
8.3V
T122
470R
0V
CLOCK
7.5V
T121
0V DATA
VDD
T120
from 0V
ENABLE/MPX
MPX
2169
T140
3168 3167 T127
7.8V 12Vtyp
VCC
VCC1
(10-14V)
120R 120R T126
8.2V
RIGHT
8.2V
T125
GND
LEFT
T117
11V 3154
VCC2
330R
T124
12V
7112 9.6V
BC547C
T118 3155
8.2V
VDD
8.3V 150R
7.5V
8.9V
8.9V
+FM
8.2V
AM_FM
from 7101/39
12 13
PBAS TUNER ECO6 AS
/02 3B RDS
14 1101 A2 5122 H5
1102 B1 5123 G5
1103 E2 6105-1 E4
1110 B2 6105-2 G6
1120 E14 6106 D4
1130 A2 6107 G13
1131 C1 6120 C13
1132 F13 7101 C8
2102 B2 7103 H8
2105 A2 7104 D2
7111
2106 E3 7105 F4
A 2107 E4 7109 H3
2108 G3 7110 H12
2109 G3 7111 C13
2118 H6 7112 G12
2119 H6 7122 H4
2120 G6 7124 H7
2122 I6 T102 B2
2123 H6 T103 C2
2124 H6 T104 B6
2125 H6 T105 E2
2127 E7 T106 E2
2128 B8 T107 C3
B
2129 C7 T109 D5
2130 F11 T110 D5
2131 F8 T111 E5
2132 F8 T112 F7
2133 F8 T113 A9
2134 I8 T114 B11
2135 I9 T115 B9
2136 H14 T116 F10
2137 H13 T117 F13
2138 F9 T118 G11
2139 G9 T120 F13
2140 G9 T121 F13
C
2141 F10 T122 E13
2143 G12 T123 E13
2144 G11 T124 G14
2145 E11 T125 F14
2146 E12 T126 F13
2147 E12 T127 F13
2148 E12 T140 F11
2149 H7 T141 F10
2150 A10 T142 F10
2159 D5
2161 C11
D
2162 H12
2163 D11
2164 F10
2165 C7
2166 D12
2167 E12
2169 G8
2180 C4
2190 C3
stereo
2191 C3
3105 D5
3108 D2
E
stereo 0.4V 3109 G4
mono 4.8V
3123 H3
1120
3125 H2
3128 H3
8 3130 I8
3131 I9
7
3132 G4
3134 H6
6
3135 E7
5 3137 H7
3141 E7
4
3142 E6
F
3143 G7
3
3144 G8
2 3145 F8
3146 G13
1
3150 H12
FE-BT-VK-N
3151 H12
3152 G14
3153 G13
4
3154 F13
3155 G11
3156 C12
G
3157 C12
3158 E13
3159 D13
3160 D13
3161 D13
3167 F12
3168 F11
3169 D11
3170 C12
3171 G12
3172 G12
3176 G7
H
3180 I3
3190 B6
3191 B7
3192 B6
3193 B4
3194 C4
3195 C4
4101 E2
4102 F3
4104 H5
5102 E3
5103 F2
I
5109 B9
5110 B10
5111 A9
5112 A11
5114 B11
5115 F7
5118 G9
5119 G9
5121 E11
14
3103 308 64241