Philips FW-C250 Service Manual page 35

TUNER BOARD ECO5 /
Systems
1 2 3 4 5
y
1101
A
T001 y
2 9128
FM
300 OHM
1
Service Solution for
A
FM 50 OHM Local/DX - switching
B
x
remove
1102
T002
9100
1
2105 6101
2
100p
BA484
T003
C
MW/LW-RF P0
AM FRAME AERIAL
D
1103
T005
2
T006
1
MW
5102
6
2
E
5
w
3108
w
LW=high
7104
2k2
1
BC338-40
3
4
B
LW
F
P0
w
w
5103
7105
4 3
BC338-40
2
MW=high
6 1
G
H
I
J
K
L
M
N
1 2 3 4 5
7B-3
6 7 8 9
2104
100p
100p
(if 1102 is used)
C
47p
(if 1101 is used)
3105
T009
9101
to 3103
220R
REF
FM-RF REF
2129
100u
2165
T043
Q-MULTIPLIER
100n
7102
2SA838B
5131
F
6105 2
1 7
3101
HN1V02H
MW 33k
s_5k6
T040
Vcc1
FM-OSCILLATOR
3110
47R
VCO
3142 3141
1.3V
100k 56k
1 5
T012
2127
220n
Vcc1
r
7103
BC858C
r
3176
1k buffer amplifier
AM-OSCILLATOR
T011
3132 4108
9117
Vdd Vdd 47R
w
7109
w
3125
P0 10k
BC858B w
3128 w
7122
LW=high
2k2
BC848C
6 7 8 9
10 11 12 13 14
AM-IF1
5111
T046
4 3
450 kHz
E
6 1
z
5113
2
T013
FM-IF1
SFU450B x
4104 5109
T014
t
7119
3104
180R 2SC1047
0.15V 0.7V 1.4V 1.4V 1V 1.4V 0.7V 1.4V 0.7V
0.7V
44 43 42 41 40 39 38 37 36 35
RF-GND
AM Det.
V A
STAB
1 Ripple
2.1V
AM IF
AGC
FM
AM AM
2 IF1
0V AM-RF Frontend MIXER
AM
CONTROL IF
AGC
0V 3 FM-RF
AGC
AM FM
OSC
IF2
FM
4
Frontend
RF-GND
FM
MIXER
5
0V FM-OSC.
FM
CONTROL
OSC Pre- Multi-
scaler plexer
AGC
AM
0V 6
AM-OSC.
DET
V STAB A V B
STAB
Ripple
7
8V Vcc1 FM
V
STABILIZER
dd
DET
Vcc2
8
I-TUNE Charge
Pump
TEA5757
9
VCO
7101
z_TEA5759
1V
10
0.7V AF-Out
Mono/
STEREO
Stereo
11 AFC
1.2V MPX-IN
DECODER
IF GND
12 0.8V 13 0.7V 14 0.7V 15 0.7V 16 1V 17 18 1V 19 1.2V 20 1.2V 21 2V
0.1V
(2140)
2164
5119
470n
4 3
2
2
6 1
2140 exchanged by 2164
r (SMD type 0805)
3144
from layout stage 3317.9 onwards
3140 and 5120
1k MPX
DISCRIMINATOR
to 1121 provisional as respectively 3103 303 3380.1
alternative and 3103 308 3396.1
5123 MW
4 3
2
u
6 1
w
w
5122 LW
7124
4 3
BC848C
w
3137
2
P0
22k
MW=high
6 1
10 11 12 13 14
7B-3
15 16 17 18
VERSION PROGRAMMING COMPONENTS
AM-IF2
5112
3 4
450 kHz
/00 FM/MW/LW
1 6
/00 FM/MW/LW/SW-Eu
/01 FM/MW-Stereo
2
z
3175
AM-IF /01 FM/MW
to 1130,1131
2k7
AM Stereo module
/01 FM/MW/SW-Ov
FM-IF2 /06 FM-Japan/MW-stereo
5110
/13 FM/MW-Stereo
/14 FM-OIRT/MW/LW
T047
/14 FM-OIRT/MW
1.4V
/17 FM/AM-Stereo
34
/17 FM/AM
V B
STAB 5114
/.. FM/MW/2xSW
33 0.7V 3
FM-IF2
AM-AFC
/15 FM/MW/SW-Eu
450 kHz
T015
32
AM-AFC 1.4V 1
T037
P1
P1 31
x
2161
Programmable
Output Ports
T032 100n
30 P0
P0
x
2163
100n 3161 T020
29
Write
470R
Enable
3160 T021
DATA 28
470R
3159 T022
470R
27
CLOCK
T023
26
Dig.GND
7111
5121
2167 BC848C
3156
XTAL P1
25 12p
75KHz
100k
1.3V
OSC. 3169
2166
version detection
150k
1n
24 stereo 0.3V
Mono/
mono 4.9V
Stereo
3167
23 Vcc1
8V
Vdd Vdd 220R
8V
Vcc2
3155
Vdd
T018
8V 470R
22 11V
z_100R
3171 3154
T045
330R 150R
z
7125
BC848C
z
3147
3M3
x
2137
220n
x
2135
220n
r....for RDS version only
s...for East European version (/14/34) only
t....for Japanese version (/06/26) only
6105
Chip jumper u...for 2-band (FM/AM) version only
1 8
v...for SW-version 3.9-12.1MHz only
2 7
w...for LW only
41..
3 6
x....not for all versions
4 5
y....for USA version (/17/37) only
z....for AM-STEREO (/06/13/26/33) versions only
HN1V02H
15 16 17 18
19 20 21
1101 A 1
1102 B 2
1103 D 2
1121 E20
1124 G20
1126 E20
1130 I20
A
6120 3156 3157 3170 remark
1131 I20
2101 C 6
x - - -
7111
2102 G 7
not mounted 2103 D 9
- - - -
2104 B 6
2106 F 5
- - x - SW
2107 G 6
2108 G 3
- x - x
2109 G 3
2111 C13
- x - - 2120 L11
B
2122 N11
2123 M11
- - - x
2125 M11
2126 G 9
- - x - SW
2127 G10
2128 C11
x - x x
2129 C 9
2130 H17
x - x -
2131 I10
2132 I10
- - x - SW
C 2133 H11
2134 J17
x - - x
2135 J18
2136 J17
- - x x
2137 J18
2138 H12
2139 H13
- x x x
2140 H14
2141 H14
x = component mounted
2142 H14
SW = Software initialisation
2143 I17
D
2144 H17
2145 G16
150kHz, 50mV pp 2146 F15
5V
2147 F16
2148 F16
r 2149 C15
1121
2150 B13
1
0V 2152 F 7
GND
2153 E 8
stereo mono stereo
2154 E 7
2
MPX MPX
2155 D 8
E
from 3144 1126
2158 M11
1
0.3V 3 2159 F 9
enable
2160 M12
2161 D16
2
0.2V 4
data 2163 E16
2164 H14
3
3 2165 C 9
5
clock 2166 G16
2167 F16
4
stereo 0.5V 6 2168 I 13
stereo
mono 4.9V F 3101 E 7
3102 E 7
3103 C 8
3104 B11
3105 C 7
3108 E 3
1124 3109 F 2
T024
1
left 3110 F 6
3113 C13
T025 3119 B13
2
GND
4 3120 C 6
G
3123 M 7
T026
3 3125 M 6
right
3128 M 8
3132 L 9
T027
4
(11 - 14V) Vcc 3134 M12
3137 M13
typ. 12V
3140 I13
3141 G10
3142 G 9
3143 I10
3144 I10
H
3145 H10
3146 I17
3147 I15
3152 H18
z
3153 H19
1130
z 3154 H18
1131
3155 H17
T030 1
V+
3156 G17
3157 F17
T031 2 3158 F18
stereo
I 3159 F18
3160 E18
3
3161 E18
STSIG
3167 G18
Low=AM mono 4 3169 G15
VCO-kill 3170 F17
P0
3171 H15
5
T033 3175 B16
R-out
3176 J 9
3177 I18
T034 6
L-out 3178 I15
J
3179 I16
3180 M7
T035 7
L-FM
4101 G 5
4102 F 5
T036 8
4103 G 9
R-FM
4104 B13
4105 B11
9
4106 K12
P1 +FM
4108 L 9
5102 E 4
T038 10
GND
5103 F 4
K
5109 B13
T039 11 5110 B14
AM-IF
AM-IF
5111 A13
5112 A15
5113 B12
5114 C16
5119 I 12
5120 H13
5121 F15
5122 M11
L
5123 L11
5130 E 8
5131 D 8
Signal path 6103 C 2
6104 C 3
6105 K12
FM
6105 E 6
6106 C 6
AM
6107 H17
6120 G16
MPX (Audio Frequency)
6130 E 7
M
6131 D 7
AF - left/right
7101 G11
7102 D 8
7103 I 9
7104 E 3
............. Vdc FM mode stereo 7105 F 2
7109 M 7
V Vdc MW mode 7111 F18
7119 B13
EVM
V 7122 M 9
V Vdc LW mode
7124 M13
N
7125 I16
9100 B 4
Voltages measured while set is tuned to a strong transmitter
9101 C 6
9117 L10
9128 A 4
ECO5 systems, discr.coil, 030998
19 20 21