Schematic Diagram - Main Section (Aep, Uk, Chinese Models) (1/3) - Sony HCD-EP505 Service Manual

6-7. SCHEMATIC DIAGRAM – MAIN Section (AEP, UK, CH models) (1/3) – •
MAIN BOARD
(1/3)
TP
(AM VT)
CN402
AM ANT
TP
CN401
(FM ANT)
FM ANT
75Ω
COAXIAL
12.4
11.7
[0]
12.4[0]
12.5[0.1]
0[0.7]
FM: 0, AM: 0.7
16V
(Page 22)
1
MAIN
BOARD
(2/3)
2
MAIN
BOARD
(2/3)
(Page 22)
CN101
9P
CD
BLOCK
SUPPLIED
WITH THE
ASSEMBLED
BLOCK
50V
See page 19 for Waveform.
T402
AM FREQUENCY
T401,TC401
COVERAGE
AM TRACKING
AM RF
5 1 5 1
6 2 2
4 3 4 3
50V
U402
FM/AM IF AMP,
AM RF AMP/MIX/OSC,
FM/AM DET, DET, MPX
IC B/D
TP
(FM VT)
9[0]
3.5
[0]
2.7[0]
FM IF AMP
Q401, 402
B+ SWITCH
5600P
50V
0 (0) 0 (3.7) 3.7 (0)
0 4 0 4 4 4
<3.7> <0> <0>
0 4.8 8 0 0 (0) 0 (3.7) 3.7(0) 4 4 4
<3.7> <0> <0>
50V
5700P
4.7k
• See page 32 for IC Block Diagrams.
50V
50V
50V
BAND SELECT SWITCH
3.2 3.2 0 0 3.7
2.2 6.6[0]
[3.5] [3.5] [0.7] [0.7] [1.9]
[2]
3.6 3.6 2.9 3.2 3.2 4.3 4.3 4.3 4.3
3.6 7.7 3.6 3.6 5.7 5.7 7.7 7.7 1.2 0.1 0 0 6.6 6.6
[8] [8] [8] [3.7] [6.9]
50V
50V 16V
1 5
2
3 4
T406
AM IF
4700P
4.7U
50V
4.7U
50V
2.2U
50V
4 4 4 4 4
U501
0.47U
2.2U 50V
INPUT SELECT
50V
SWITCH,
ELECTRICAL
VOLUME
IC B/D
2.2U
50V
4 4 4 4 4
4.7U 0.47U
50V 50V
4.7U 2.2U
50V
50V
0
0
DTC343
Q501, 502
MUTING
21 21
(AEP, UK)
50V
2.7k
2.7k
2.6
50V
1.4
BUFFER
0.7
50V
Q404
FM/AM
0[0.6]
0 0
0 [2]
2 [0]
50V
4.1 0[3.5]
0.9
4.1
0.9
4.8
50V
0
fmin-fmax
0
2
FM:1.7 − 8.4
AM:1.2 − 7.1
2
1
Q503, 504
MEGA BASS
CONTROL
0
0
133
133
0
0
50V
0
0
DTC343
50V
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
[
(
<
HCD-EP505
Ver 1.1
B+ SWITCH
4.1 (0)<0>
7.6
4.8 (0)<0>
U403
FM/AM PLL
IC B/D
CN305
11P
(Page 29)
A
DISPLAY
BOARD
(Page 23)
MAIN
3
BOARD
(3/3)
MAIN
4
BOARD
(2/3)
CN303
133
(Page 22)
11P
B
DISPLAY
BOARD
(Page 29)
MAIN (Page
5
BOARD
23)
(3/3)
MAIN
6
BOARD
(3/3)
(Page 23)
] : AM
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