Philips FW21 Wiring Diagrams page 12

erwisowych
37
150
069UBT
2160 3162
1µ 1k
1
2.5V
7150
HEF4069UBT
F4069UBT
1
1
0 82k
2161 3163
1µ 1k
1
58B
2.5V 2.5V
*680p
3161 82k
2159B
1n *680p
LOOP FILTER
STEREO DECODER
2143 2144
470n 470n
3142
2.2k
IGH
1
2.5V 2.5V
3220
7150
0
HEF4069UBT
TOR
5
3,6
3224
3128
0
2.2k
2138oA
22p
7128x
BC848C
3x
8C
LW 0.7V
PADDING
0V
x
k
LW
LW/MW
MUTE LEFT
7156
BC337-40
3164
4.7k
+5V
MUTE RIGHT
MUTE
7157
5V
BC337-40
3165
7174
4.7k
BC858B
5V
IF
3141
220
5V
Found strong
signal during
SEARCH
0
100ms
5V
IF 200mVpp
0
FM/AM SWITCH
+5V
7172
MM74HCU04M
3144
47k
FM/AM
0V 1 5V
5V 0V
MONO=Low
STEREO=Low
TUNED=Low
3193
470
2173
3175
47µ
15k
3174 1
10k
T015
2172
1.5µ
+5V
2171
3172
3175
4.7n
4.7k
100k
5V
3170
4.7k
1V
7171
BC848C
0.7V
T036
0V 2170
0.6V
4.7n
3125x
7170
4.7k
BC848C
LOOP FILTER
B
3180
3181
100k
100k
IF-COUNT=HIGH
1
5V 0V
6154 3156
1N4148 10k
7172
MM74HCU04M
IF
MW/LW
0V
12
V
FM
AM
0V
13
5V
FM/AM
0V
VCO KILLER
IF
2123
1n
3121
2122
1n
100k 0.7V
2SC1047
+V
Tuned down
Tuned up
+5V
3123
MM74HCU04M
22k
MW/LW
5V
0V
MUTE=LOW
VERSION PROGR DIODES
6121 3183 22k
1N4148
6121
1N4148
6123 3184 22k
1N4148
T038
0V 0V 0V 0V
11 10 9 8 7 6
SHIFT REGISTER LATCH
PROGR.
COUNTER
DIVIDER
UNIVERSAL
COUNTER
1/2
VDD
14 15 16 17 18 19
5V 0V 2.6V
0.8V 0V 0V
0V
2178 2179 2134 2183
1n 100p 1n 100n
Stereo-Indic
Tuning-Indic
+5V
3122
470
3119
470
2124
10n
3.4V
FM OSC
AMP
7120
AM-WAVEBAND
SWITCHING LOGIC
7172 7172
MM74HCU04M
LW/MW LW=Low
1 1
0V 0V 5V
5V 5V 0V
Baza Porad Serw
V
0V=no communications
OFF
V
0V 0V
0V 0V 0V 0V 2.4V
5 4 3 2 1
REFERENCE
DIVIDER
5170
PHASE
7.2MHz
DET.
3188
1k
20 21 22 23 24
5V 1V
2.7V
+5V
3185
100k 5V
+5V
L=weak sens. 5V
SEARCH
(Autostore 1. run)
SENSITIVITY
7178
BC858B
0V
VERSION PROGRAMMI
FM, MW, LW EUROPE
FM, MW, LW EAST EUROPE
FM, MW USA /17
FM, MW OVERSEA /01
FM, MW, LW, SW
FM, MW, SW
6105
HN1V02H
1
2
3
4
MU
2186
1n
7.2M
2181
12p
2180A
27p
3179
22k
X=DIODE M
8
7
6
5