Overall Block Diagrams; Overall - Sony WRU-806B Service Manual

4-3. Overall Block Diagrams

BPF RF Amp 1st Mixer SAWF 2nd Mixer
CN101
Ant. IN
(2/4)
(A)
IC203
FL201 Q201 SWF201
243.95MHz
R F Block ( A)
Q326
fr +243.95MHz Buffer (A)
VCO
2nd LO
X301
LPF
233.25MHz
Q306
Q301,Q302,D301
Buffer (B)
PLL
IC301
PLL Data
8 MHz
9V DC
CN301 (3/4)
+9V
IN
to AF Block
IC502 +6V
to RF and
Voltage Regulator AF Block
IC503 +3.6V
to PLL
DC-DC Convertor
IC504,
+3.3V
IC302
to CPU
and PLL IC
Voltage Regulator
R F B lock (B)
234.95MHz
CN301 FL101 Q101 SWF101
Ant. IN
(4/4)
(B)
IC203
BPF RF Amp 1st Mixer SAWF 2nd Mixer
WRU-806B
BPF(CF) IF Amp
BPF(CF) IF Amp
Q202,203
CF201 Q208 CF202 IC201
10.7MHz
RSSI (A)
AF Amp (A)
Diversity
Switch Mute De-emphasis LPF
IC401
IC401
IC403 IC403
IC402 IC402
AFM
Tone Det. AF Det.
IC406,D403
IC404,IC405,D401
AF Amp (B)
TONE
ALO
Noise Det.
TONE
IC408,IC405,D402
NOISE
AFM
BATT Det.
IC408,IC410,D404
BATT
DIV DIV
RSSI (A)
RSSI (B)
LE
DATA
CLOCK
LD
8 MHz
RSSI (B)
10.7MHz
CF101 Q108 CF102 IC101
Q102,103
BPF(CF) IF Amp BPF(CF) IF Amp

Overall

Overall
RF-155 BOARD
BPF(CF) Discriminator
CF203 IC205
AF (A)
AF Amp
Expander
CN301 (1/4)
AF OUT
IC407 IC406
DP-476 BOARD
CN603
CN801
LCD
ND801
CPU
LED
IC603
D806,807,808
S801 S802 S803 S804
AF (B) –
+
GP CH
CF103 IC105
Discriminator
BPF(CF)
4-5 4-5