Sony WCS999 - Wireless Camcorder Microphone, Руководство по обслуживанию

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WCS-999
– 11 –
– 12 –
4-2. BLOCK DIAGRAM – RX Section –
FM FRONT-END, IF AMP, DET
IC1 (1/2)
POWER AMP
IC1 (2/2)
05
•
SIGNAL PATH
: RX
B+
ANT2
LEAD
ANTENNA
RF
FRONT-END BLOCK
ANT
CT3
CT1
CF2
10.7MHz
CF1
10.7MHz
CT2
EXPANDER
D51
v
J51
RF
CHANNEL
SW1
RF
CHANNEL
D153
CH-3
CT1
CH-2
CT2
CH-1
CT3
RX OUTPUT
LEVEL
RV52
RX
FREQUENCY
CT1 – 3
BUFFER
IC52 (1/2)
BUFFER
IC51 (2/2)
BUFFER
Q152
SWITCHING
Q153
LED DRIVE
Q155
LINE AMP
IC52 (2/2)
LINE AMP
IC51 (1/2)
LINE
FILTER
LF101
EMI
FILTER
LF51
LOCAL OSC
Q3
LED DRIVE
Q101
TUNING
METER
FM IF
AMP
FM
DISCRIMI-
NATOR
FM
FRONT-END
AF POWER
AMP
DET,
AGC RF AMP
Q1
MIXER
Q4
MIX
MIC
J52
X1
433.92MHz
1
2
3
POWER
SW101
BATT
D102
ON
OFF
DRY BATTERY
SIZE “AA”
(IEC DESIGNATION R6)
1PCS. 1.5V
SIGNAL METER
BUFFER
Q151
L1
(RF)
L2
(OSC)
REG (1.25V)
VREF
FM/AM
FE OUT
FM RF
IN FM IF
IN
FM DISCRI
DET
OUT
MUTING
Q154
P1
(REC OUT)
VREF
VOL
AF
IN AF
OUT
METER AFC/AGC AFC/AGC REG OUT AFC FM OSC FM RF
9 7 6 8 19 21 22
12 17
14
2
23
4
24 27
LIMITER
D151
D154
DC/DC CONVERTER
IC101
VOUT
LX
OSC
OUTPUT
CIRCUIT
PWM
CONTROL
ERROR
AMP
VREF
2
3
L101
D101