Philips LX7000SA Service Manual page 25

1 2 3
TUNER BOARD ECO6
/ SYSTEMS NON CENELEC
USA
1101
2105 USA
3
1130
100n
2
C-PAD
1
A
YKD21
A
FM 75 OHM
not USA
1102
2104
1
T102
100p
6103
2
B
BAV99
printed
1131
T103
C-PAD
C
D
E
AM-RF
6105-1
MW
AM FRAME AERIAL
1
5102
1103
8 7 7KL
HN1V02H
T105
2
6 1
F
T106
1 5
2
XH-S
3
4
B
G
H
1 2 3
7A-2
4 5 6
C
3105 T109
220R
FM-RF
0.6V
Q-multiplier
7102
BF550
5131
3102
100K
FM-OSCILLATOR
VCO
3101
33K
1
2
T111
7
T110
5
AM-OSCILLATOR
3 6
6105
5123 MW
1 8
4 3
2 7
2
3 6
1
6
4 5
8 7
HN1V02H
4 5 6
LEGEND
p ...for provision only
USA ... for USA version only
E-EU ... for East European version only
J ... for Japanese version only
7 8 9
AM-IF1
5111 450kHz
4 3
2
T113
1
6
8 7
FM-IF1
T115
4103
0R
I
J
7119
BFS20
IF-AMP.
7101
TEA5757H
J
TEA5759H 44 43 42 41 40 39
2165
100n
AM DET
2129
2V
AM-IF
1 RIPPLE
100u AGC
AM AM
0V 0V 2 AM-RF
FRONTEND MIXER
CTRL
T128
3 FM-RF
AGC
AM
OSC
printed
4 RF-GND1
FM
D
FRONTEND
FM
MIXER
5 FM-OSC
0.1V FM
printed
OSC PRE- MULTI-
SCALER PLEXER
6 AM-OSC
0V
RIPPLE VSTABA VSTABB
VCC1 VDD
7 VCC1
7.6V
7.8V STABILIZER
AGC
8 I-TUNE
1.6-8V
CHARGE
1-8V PUMP
3142
3141
9 VCO
1V
1.3V VCC2
56K
100K
10 AF-OUT
0.7V
2127
11
MPX-IN STEREO
1.2V
220n DECODER
12 13 14 15 16 17
5119
4 3
RDS only
2
VCC1
1
6
8 7
2169 MPX
3144 DISCRIMINATOR
1.3V
1K to 1120
2n2
pin 5
0.7V
7103
BC857C
MPX
BUFFER AMPLIFIER
7 8 9
...V FM mode stereo
...V MW mode
V EVM ...V LW mode
voltages measured while
set is tuned to a strong transmitter
7A-2
10 11 12
VERSION PROGRAMMING COMPONENTS
/00 /02 FM/MW/LW
2150 /00 /02 FM/MW
100n /01 FM/MW
AM-IF2
5112 450kHz /14 FM-OIRT/MW
5109
3 4
1 3
O
T114
2
2
G 1
6
7P 7 8
FM-IF2
5110
1 3
I O AM-AFC
5114 450kHz
G 2
3 4
2
38 37 36 35 34
1
6
7 8
7P
1.2V
0.7V
FM-IF2-IN 33
P1
FM
IF1
AM-AFC 32
1.4V
P0
FM P1 31 7.9V
AM
IF IF2
P0 30 7.7V
0.1V
AGC
WRITE-EN 29
CONTROL 0V
DATA 28
0V
AGC
CLOCK 27 0V
3169 2166
AM
DET DIG-GND 26
150K 1n
5121
2167
FM
25 1.4V
XTAL
DET
OSC
12p
DT-381 75K kHz
24 stereo 0.2V
MONO/
STEREO mono 4.8V
23
VDD
9.6V
AFC
VCC2
9.5V
VDD
18 19 20 21 22
T140
3168 3167
7.6V
VCC1
7.8V 120R 120R
VCC2
2164
11.1V
470n VCC2
11.1V
2 12V
7112
BC547C
3155
9.6V T118
VDD
10.4V
9.5V 220R
10 11 12
Signal path
FM
AM
MPX (Audio Frequency)
AF - left/right
13 14
1101 A1
1102 B1
1103 F2
1120 E14
1130 A2
1131 B2
1132 G13
2101 B3
2102 B1
2103 C7
2104 B3
2105 A2
VERSION
2106 F3
6120 3156 3157 3170 7111
2107 F4
2119 H6
A
2120 G6
2124 H6
2125 H6
2126 F7
2127 E7
2128 C8
2129 C7
/17 FM/AM 2130 F11
2131 G8
/06 FM-Japan/AM 2132 G8
2133 G8
component mounted 2134 H8
2135 H9
2136 G14
B
2137 G13
2138 F9
2139 G9
2140 G9
2141 F10
VERSION DETECTION
2143 G12
2144 G11
2145 F12
6120
2146 E12
P1
2147 E12
BAS216
2148 E12
0.2V
2149 H7
2150 A10
C
2152 E4
7111
2153 E5
BC847C
2154 D5
2155 D5
0V
2159 F6
2161 C11
2163 D11
2164 F10
2165 C7
2166 E11
2167 E11
2169 H8
3101 E4
3102 D4
D
3161 3103 C6
3104 A7
3105 B6
22K
3160
3132 G5
3134 H6
3141 E7
470R
3159
3142 E7
3143 G7
152kHz, 50mV pp
5V
470R 3144 H7
3145 F8
3146 G13
3152 G14
0V
3153 G13
stereo mono stereo
E 3154 G13
3155 G11
3
3156 C12
stereo 0.4V
3157 C12
mono 4.8V
3158 E13
1120
3159 D13
3158
T123
8 3160 D12
STEREO
3161 D13
470R T122
0V 7 3167 F12
CLOCK
3168 F11
T121
0V DATA 6 3169 E11
3170 C12
T120
MPX 0V ENABLE/MPX 5 3172 G12
3176 G7
from 2169
T127
12Vtyp VCC F
4 3181 E6
5102 F2
(10-14V)
T126
RIGHT 3
5109 B9
T125 5110 B10
2
GND 5111 A8
5112 A11
LEFT 1
5114 B11
T117 3154 5119 G9
5121 E11
FE-BT-VK-N
5123 G5
330R
5130 E5
T124 5131 C6
4
6103 B2
6105-1 F3
G
6105-2 G5
9.6V
6106 C3
6107 G13
6120 C13
6130 E5
6131 D5
7101 C8
7102 C6
7103 H7
7111 C13
7112 G12
T102 B2
T103 B2
H
T105 F2
T106 F2
T109 B6
T110 F5
T111 F4
T112 F7
T113 A8
T114 B10
T115 A8
T116 F10
T117 G13
T118 G11
ECO6 Sys-non Cenelec, 000911 T120 F13
T121 F13
T122 F13
13 14
T123 E13
T124 G14
T125 F14
T126 F13
T127 F13
T128 D7
T140 F11
T141 F10
T142 F10