Tuner Board Eco6 - Philips FWM372 SERIES Service Manual

1 2 3

TUNER BOARD ECO6

/ SYSTEMS-CENELEC
A
1101 USA
2105 USA
3
100n 1130
2
C-PAD
1
YKD21
A
FM 75 OHM
FM FRONTEND
1110
1102
T102 0V 1
B
1
MIXER
ANT
YKD31-
2
0432
GND VCC
1131
T103
2 3 6 5
4 9 10
C-PAD
C
T107
3195
+FM
100R
D
LW only
0V
3108
0V
7104
0.7V BC337-40
2K2
P01 LW =HIGH
MW/LW-RF
E
AM FRAME AERIAL
MW
5102
1103
8 7
T105
2 T106 * 6 1
4101
1 5 2
0R
XH-S
4 3
7KL
*
F
B
LW
5103
3
4
2
1
6
8 7
G
VDD VDD
H
8.3V
7.5V
P0 3125
8V BC857B
P01
6.7V 7109
10K
3128
0V
LW=HIGH 0V
7.4V
0.7V
2K2
I
marked components not for LW version
1 2 3
7B-2
4 5 6
FE450
T104
3190 3191
7 0V
IF-OUT 120R 120R
8
0.1V
OSC.
D
OUT
3194
2K2
C
T109
3105
220R
T110
VCO 3142
6105-1 2
1
T111 3141
7
56K
HN1V02H
100K
1
4
T112
5
6105
1 8
3
2 7
LW only
3 6
7105
BIRDY FILTER
BC337-40 4 5
HN1V02H
0.7V
0.1V
AM-OSCILLATOR
P0 MW
5123
4 3
2
6 1
8 7
5122 LW
7122
0V 4 3 0V
BC847C
0V
2 7124
BC847C
6 1
8 7
4 5 6
7 8 9
AM-IF1
5111 450kHz
4 3
T113
2
6 1
8 7
T115
FM-IF1
5109
1 3
I O
2128
G
2
AM/FM
10u
7101
TEA5762
44 43 42 41 40 39 38 37 36
2165
AM DET
100n
2V
2129
AM-IF
1
RIPPLE
AGC
FM
100u
AM AM
IF1
0V 2
AM-RF FRONTEND MIXER
CTRL
3
FM-GND AM FM
AGC
AM
IF IF2
OSC
4 RF-GND1
AGC
CONTROL
0.1V 5 FM-OSC
PRE- MULTI-
SCALER PLEXER
0V 6 AM-OSC
AGC
RIPPLE VSTABA VSTABB
VDD
7
7.8V VCC1
VCC1
STABILIZER
8.2V
AGC AM
8 I-TUNE DET
1.6-8V
CHARGE
1-8V PUMP
FM
9
1V VCO
DET
1.3V
VCC2
0.7V
10 AF-OUT
2127
3135
11 MPX-IN
STEREO
AFC
1K 1.2V DECODER
22n
5115
6
8
12 13 14 15 16 17 18 19 20
7
2 1
470n
2164
RDS only
2
VCC1
5119
4 3
3144 2169 MPX
1.3V
2
1K 22n to 1120
3176 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
LEGEND
...V
* ... only assembled in FM/AM-version SMD jumper
...V
p ...for provision only
41xx
USA ... for USA version only
EVM
0R V ...V
LW ... for LW version only
voltages measured while
set is tuned to a strong transmitter
7B-2
10 11 12 13
VERSION PROGRAMMING COMPONENTS
VERSION
6120
/00 /02 FM/MW/LW
2150
/00 /02 FM/MW
AM-IF2
100n 5112 450kHz
3 4 /01 FM/MW
T114
2
/14 FM-OIRT/MW
1 6
FM-IF2
/17 FM/AM
7P 7 8
5110
component mounted
1 3
I O
AM-AFC
5114 450kHz
G
2
3 4
2
VERSION DETECTION
1 6
35 34
7P 7 8 6120
P1
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
7.5V
P0 30
0.1V
3161
WRITE-EN 29 0V
22K
3160
28 0V
DATA
470R
0V 3159
27
CLOCK
3169 2166 470R
26
DIG-GND
150K
1n
5121
2167
25 1.4V
XTAL
OSC
12p
DT-381 75 kHz
24 stereo 0.2V
MONO/
STEREO mono 4.8V
23
VDD 3158
8.2V
VCC2 8.3V
470R
7.5V
VDD
from
21 22
MPX
2169
T140 3168 3167
7.8V
12Vtyp
VCC1
(10-14V)
120R 120R
8.2V
8.2V
VCC2
T117
11V 3154
VCC2
330R
12V
9.6V
7112
BC547C
T118 3155
8.2V
VDD
8.3V 150R
7.5V
8.9V
8.9V
+FM
8.2V
AM/FM
from 7101/39
10 11 12 13
FM mode stereo Signal path
MW mode
FM
AM
LW mode
MPX (Audio Frequency)
AF - left/right
14
1101 A2 5121 E11
1102 B1 5122 H5
1103 E2 5123 G5
1110 B2 6105-1 E4
1120 E14 6105-2 G6
1130 A2 6106 D4
1131 C2 6107 G13
1132 F13 6120 C13
3156 3157 3170 7111
2102 B1 7101 C8
A
2105 A2 7103 H8
2106 E3 7104 D2
2107 E4 7105 F4
2108 G3 7109 H3
2109 G3 7110 H12
2118 H6 7111 C13
2119 H6 7112 G12
2120 H6 7122 H4
2122 I6 7124 H7
2123 H6 T102 B2
2124 H6 T103 B2
2125 H6 T104 B6
B
2127 E7 T105 E2
2128 B8 T106 E2
2129 C7 T107 C3
2130 F11 T109 D5
2131 F8 T110 D5
2132 F8 T111 E5
2133 F8 T112 F7
2134 I8 T113 A9
2135 I9 T114 B11
2136 H14 T116 F10
2137 H13 T117 F13
C 2138 F9 T118 G11
2139 G9 T120 F13
2140 G9 T121 F13
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
D
2159 D5
2161 C11
2162 H12
2163 D11
2164 G10
152kHz, 50mV pp 2165 C7
5V
2166 E11
2167 E11
2169 G8
0V
2180 C4
stereo mono stereo
2190 C3
2191 C3
3 E
3105 D5
stereo 0.4V
3108 D2
mono 4.8V
3109 G4
1120
3123 H3
T123
STEREO
3125 H2
T122 8
3128 H3
0V
CLOCK
3130 I9
7
T121
0V
DATA 3131 I9
6 3132 G4
T120
0V ENABLE/MPX
3134 H6
5
T127 3135 E7
VCC
F 3137 H7
4
T126
RIGHT 3141 E7
3142 E6
T125 3
GND
3143 G7
2
3144 G8
LEFT
3145 F8
1
3146 G13
FE-BT-VK-N
3150 H12
3151 H12
T124 3152 G14
4
3153 G13
3154 F13
G
3155 G12
3156 C12
3157 D12
3158 E13
3159 D13
3160 D13
3161 D13
3167 F12
3168 F11
3169 E11
3170 D12
3171 G12
H
3172 G12
3176 H7
3180 I3
3190 B6
3191 B7
3192 B6
3193 B4
3194 C4
3195 C3
4101 E2
4102 F3
4104 H5
I
5102 E3
5103 F2
5109 B9
5110 B10
5111 A9
5112 A11
5114 B11
5115 E7
ECO6 Sys-Cenelec, 010517
5118 G9
5119 G9
14