Philips FW21 Wiring Diagrams page 9

VREFA
13.8V
+V
R3152
3120
!
33E
FM-DETECTOR
3122
2112 2210
5.6k
22n 100µ
5104
8V 12.6V 10.8V
3 7
IF out VDO FM det
FM DET
COMP FF 38KHz
T
MUTE VCO
FM det AFC VCO
9 4 13 0V
2.2V 2V
1
3132 2124
3134
5111
DY
10k 4.7µ
5.6k
R
2
2129
VREF
1µ
FM osc
98.2 - 118.7MHz
AM OSC
from 7103
+V
pin 30
13.8V
3162
!
390E
3190
6101
47E
51
BZX79-C4V7
19
0p 20
FM in
VDD
7105
LC7218
2.5V
1
REF
1/2
DIVIDER
Xin
Coun-
112
ter
PHASE
2.7V
DETECT
24 Xout
54
5p
out3 PD1
12 21
8V
3155
+VCC
220E
10.6V
3158 3156
3151 3152
4.7k 15k
4.7k 10k
7108
BC548C
7109
BC548C
2158
2159
4.7n
4.7n
3157 2160
4.7k 1.5µ
S
ELEKTRONIKI
3307
2304
3.3k
33µ
16V
from 7105 pin 14
VCO-KILL
mono=low
stereo=high
3198
10k
7104
BC558C
5105
2114
22µ
3194 3123
4.7k 22k
9.3V
10
Mono/Stereo Phasedet
PILOT DET
FF 19KHz FF 19KHz
90° 0°
TRIQ
LED
IF BUF
DRIVE
AM stop det
IF out Stereo indic
19 16 22
1.8V 6.1V
2131
3129
10µ
10k
456kHz
V
0V = no communication
0V
During communication
micro processor in frontpane
HIGH=COUNT
ENABLE
3164 3167
2147 2149 2148
22n 10n 47p 47k 1k
2150
22n
E
18 15 16 10
20 2
AM in LCTR HCTR
OUT1 VDD CE DATA out
Universal
counter
Divi-
SHIFT REGISTER LATCH
der
VSS
23
FROM C2150 6122
+V
E
13.8V
!
OPTION MATRIX
6
2156
47µ
VT
varicap
2222
470p
LOOPFILTER
ANALOGUE SIGNAL
from 7105 pin 13
AM = LOW
FM/AM
To C2147
3.7V
FM=
AM-OSC
AM= 0V
2116
100n
2115 3124 3196
470n 10k 0E
3125
9.3V 3.7V 1.1V
11 18 30
AM/FM AM oscout
29
PD AM OSC
STEREO
ALC
SWITCH
AFL
DECODER
AFR
Mute Tuning indication
17 21 12
CROSSTALK
5.4V 0V
2215
3131
V
4.5V
0V
off mute
2216
V
3165 3225 3166
1k 1k 1k
0V
2163
2nd stop 1st stop
470p
to R3126 to R3196
2ND STOP FM/AM
5 4 3
CL DATA
in
out6 17
AM = low
out4 13
out0 9
Mono = low
out5 14
V
in0 in1 out2
0V
7 8 11
mono
6121
= FM
....V
6123
....V = AM
To R3207
SW-HIGH
= FM sign
3159 3160
= AM sign
100k 100k
D
V
0V
2nd stop 1st stop
3126
12k
2ND=LOW
2ND STOP
from 7105 pin 17
SEARCH
LEVEL
2119
2.2µ
14
2117
3127
12n
5.6k
23
2120
2.2µ
15
3128 2118
5.6k 12n
+V
13.8V
3187 6109
10k
1N4148
2165
47µ
7120
BC548C
3186
10k
V
+14 13.8V
+V
7108
13.6V
+14 BC558C
+FM
0V
AM FM
0V
to R3198
VCO-KILL
KILL=LOW
3170
22k
3163
10k
FM/AM
3171
10k
V
0V
stereo AM FM
NOT FOR SHORT WAVE
NOT FOR /17 AND /01
ONLY FOR /17 AND /01
ONLY FOR SHORT WAVE
ONLY FOR FTZ
NOT FOR FTZ
SERWIS
JST 1117
7157
BC338-40
2224
220p
3230
22k 7150
MUTE
BC338-40
4
3231
2225
220p
22k
13.8V
+V
7119
MUTE
BC858B
AF-OUT
V
4.5V
3184
3.3k
0V
mute off
3185 3183
10k 10k
7-fold jst
1112
5
LOW = VALID SIGNAL
9
MUTE = LOW
8
3
STEREO = LOW
7
6
5
4
3
+V
13.8V
3197
0E
3173
22k
3172
4.7k
7107
BC848B
OPTION DIODES
6121 6122 6123
EUROPE /00 /05 - - -
USA /17 X - X
OVERSEAS /01 - X -
EAST EUROPE /14 X X X
JAPAN /06 - X X
EUROPE +SW X - -
OVERSEAS +SW X X -
X = DIODE MOUNTED
TUNER
ELEKTRONIKI
4
LEFT
GND
2
RIGHT
+V
STSIG
MUTE
STEREO
CE
DATA out
DATA
CLOCK