Read Sharp XL-HP404 (serv.man7) Service Manual online
XL-HP404E/HP404H
4 – 4
+B5
+B5
+B5
+B5
+B10
FO
U
T
ST FM
R
L
IF
OUT
AM
IN
FM
IN
COVERAGE
AM BAND
TRACKING
AM
TERMINAL
ANTENNA
+B8(D_+5V)
+B9(SW_+5V)
+B_PROTECT
+B7(A_+5V)
5.1V
FM IF
L341
BALUN
BALUN
ANTENNA
AM LOOP
VIDEO/AUX
R
L
R
L
FM
+B
+B5
CL
AM IF
ATT
–20dB
Q108
456kHz
10.7MHz
450kHz
REC/PLAY
CLK
CE
DI
DO
DI
CE
MO/ST
SWITCHING
FM/AM
PLL(TUNER)
LC72131
FM/AM
OUT
L
R
BIAS
MUTING
AC BIAS
L
L
R
R
R
L
TAPE
TUNER
CD
PB
CNP2
FROM CD SECTION
HEAD
ERASE
SWITCHING
SWITCHING
SWITCHING
BIAS
Q113
Q114
Q112
SWITCHING
OSC
BIAS
Q105
Q106
REC /P.B. HEAD
TAPE R-CH
L-CH
AUDIO PROCESSOR
LC75341
R
L
REC
R
L
R REC
L REC
SWITCHING
L(TA)
R(TA)
/PLAYBACK AMP.
PLAYBACK AND RECORD
AN7345K
R
L
FM/AM
MPXIN
STEREO
AM
RF
IN
AM
OSC
IN
VSM
FM
VT
OSC
4.5MHZ
MO/ST
VCO
FM
DET
FM+B
GND
AM
IF
FM IF DET./
LA1832S
AM
MIX
OUT
FM FRONT END
Q107
+B5
AM
OSC
O
UT
FM MPX./AM IF
UN
SYSTEM
MUTE
15
16
10
12
20
3
7
6
2
8
5
1
17
3
1
2
3
4
21
7
2
7
18
4
21
13
16
9
23
2
16
24
21
20
15
23
5
21
13
12
14
16
11
1
4
1
9
10
15
3
9 10
18
24
8
9
5
4
2
12
15
11
7 18
8
23
7
1
17
6
22
11
17
13
14
12
+B5
+B4
H/N
P.B
REC
A_+10V
LD_+8V
SO301
FE301
CF301
Q301
IC303
CF352
T351
CF302
CF351
ZD351
X351
Q601
Q602
Q604
Q603
IC601
JK690
CNS2
Q104
Q101-
IC101
L103
Q111
Q110
Q109
Q851
IC302
Q360
X352
ICT21
LC72723
RDS DECORDER
16
15
14
13
9
10
2
3
11
7 4
MPX IN
VDDA
X OUT
X IN
QT21
4.332
MHz
RST
RDDA
RDCL
RDS-ID/ READY
VSSD
TEST
VSSA
VDDD
8
LOW PASS
FILTER
L354
XL-HP404H
Figure 4-4 BLOCK DIAGRAM (4/5)
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