Diagrams; Block Diagrams - Sony MDR-RF920R Service Manual

SECTION 4

DIAGRAMS

4-1. BLOCK DIAGRAM
RX-BASE BOARD
FE UNIT
ANT301
ANTENNA (FRONT END)
RF AMP MIX
O
I
Q1
Q2
CT1
OSC
Q3
REG
L301
FM
OSC
D301
L301
RECEIVE
FREQUENCY
REG
L302
20
FM IF/
18 16 13
FM FE
DISCRI
CF301
26
CF302
10.7MHz
AUTO
BLEND
21
REG
22
RF960R MODEL
CLOCK OSC/COUNTER
IC303
OSC
COUNTER COUNTER
Q301
Q4 Q10
7 15
RV303
TUNE
D/A
RF920R MODEL
IF AMP/DECODE
IC301
DECODE
AMP
DETUNE TUNING
MUTE IND
PD1
1/2
COUNTER
PD1
MONO/ST
STEREO
MUTE
SW IND
VCO
27
RV301
FREE RUN
FREQUENCY
SWITCH
11
Q302
11 11
POWER AMP
6 2
IC302
5 R-CH
DETECT 10
10 6 1
IC304
1
MUTE
CK
Q 3
12 2 D Q303
Q304 Q 5
CLR
6
IC305
D-FF
S301
TUNE
RF960R MODEL
RECHAGEABLE BATTERY
D201
B+ SWITCH
B+
Q201,202
S101
D304
RECHAGEABLE BATTERY
POWER
1 2
NICKEL
S101
BATTERY
(METAL HYDRIDE)
(AUTO ON/OFF)
VOLTAGE
BP-HP550
DETECT
IC201
DRY BATTERY
SIZE "AAA"
(IEC DESIGNATION R03)
2PCS, 2.4V
• R-ch is omitted due to same as L-ch
• Signal path.
F : FM
L : AUDIO
MDR-RF920R/RF960R
SP1
9
SPEAKER
L-CH
SP2
R-CH
SPEAKER
R-CH
S201,202
DETECT
S201,202
+
BATTERY
CHARGE
TERMINAL
(TO TMR-RF960R)
–
OR