6-3
WRR-805A (CE, AU)
CPU
IC602
LCD
EPROM
Reg.
Reg.
BPF
RF AMP
Buff. AMP
Q202
IC101
BPF
1st Mixer
IC101
SAW
Filter
SWF101
2nd Mixer
Q101,102
2nd LO
CP202
CF
CF101
IF AMP
Q103
IF AMP
IC102
AF AMP
IC301
Mute
IC302
De-enphasis
C305,R311
LPF
Pre-enphasis
R321,C321
Expander
IC303
De-enphasis
R325,C342
AF AMP
IC304(1/2)
Mute
Q3025
Tone Det
Noise Det
Batt Det
RSSI
3.0V
3.6V
SET(S604)
+(S603)
-(S602)
MODE(S601)
MUTE(S605)
output
Transformer
T301
LPF
VCO
CP201
IC202
PLL
µPD753036K
AF AMP
IC304(2/2)
Discriminator
CXA1611N
3.6V
AF OUT
Monitor
OUT
AF Det
D402,C415
4.0 MHz
X601
140.05 MHz
3.0V
PLL
DATA
Ceramic
Discriminator
(CF104)
10.7MHz
Mute
Control
Mute
Control
FL101
FL102
CF
CF102
CF
CF103
Q601
S501
3.6V
C328,R325,
C329,R326
AF AMP
IC305
RF-93 BOARD
MB-861 BOARD
IC403,X401,X403,
X404,D403,C428
IC401,IC402,
D401,C409
IC403,X401,
X403,X404,
D404,C429
ANTENNA
J101
J301
IC604
ND601
3V
LR 6x2
POWER
SW
DC-DC
CONVERTER
Power control
BATT
D401
RF LEVEL
D402
J302
Summary of Contents for WRR-805A
Page 1: ...UHF SYNTHESIZED PORTABLE TUNER WRR 805A SERVICE MANUAL CE AU Model 1st Edition ...
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Page 48: ...7 2 7 2 WRR 805A CE AU MB 861 MB 861 MB 861 B SIDE SUFFIX 11 MB 861 A SIDE SUFFIX 11 ...
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