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

6-11. SCHEMATIC DIAGRAM – MAIN Section (Except AEP, UK, CH models) (1/3) – •
MAIN BOARD (1/3)
TP
(FM VT)
3.3K
IN
IN
ISV101
ISV101
IN
TC401
FM TRACKIG
TP
(FM ANT)
1
133
133
IN 100N
L407, TC402
AM TRACKIG
133
133
TP
(AM VT)
(Page 26)
11
MAIN
BOARD
(2/3)
12
MAIN
BOARD
(2/3)
(Page 26)
CN101
9P
CD
BLOCK
SUPPLIED
50V
WITH THE
ASSEMBLED
+
BLOCK
See page 19 for Waveform.
Q401
FM OSC BUFFER
1.7
4.2 [0.1]
2SC2785
3 1
50V
1.2K
IN
50V
100N 3.3K
2.7N
2.2K
50V
50V
50V
50V
1 4.2 4.2 4.1
[0.3] [0] [3.2] [4.6]
2 3 0.1 1 [0] 4.9 4.9 4.9 0 4.9 4.9
25V
1.3 1.3 4.9 4.9 2.5 0 4.9 4.9 1.3 1.3 0.1
[3.5] [0.4]
R401
330
U401
50V
FM/AM IF AMP,
AM RF MIX, OSC, DET, MPX
IC B/D
L408
T401
AM FREQUENCY
AM IF
COVERAGE
50V
0 0 3.7
(0) (3.7) (0)
<3.7> <0> <0>
0 0 0 4 4
0
4.8 8 0 0 0 3.7 4 4
(0) (3.7)
(0)
<3.7> <0> <0>
50V
133
• See page 32 for IC Block Diagrams.
FM/AM
BAND SELECT
SWITCH
0.1 [0.7]
100N
16V
6.8N 6.8N
IN IN
2.2U
50V
21
IN
4.9
0.1
[0.3]
C429
4.7U
BUFFER
5.6N
50V
50V
50V
4 4 4 4 4 4 470N
50V
50V
U501
INPUT SELECT SWITCH,
ELECTRICAL VOLUME
IC B/D
4 4 4 4 4 4
50V
470V
50V
50V
50V
50V
0
25 25
4.9 5.5 9
2SD1616
(0) (0.4) (0.4)
+5V REGULATOR 2SA608
<0> <0.4> <0.4>
4.9
(0.4)
8.3
<0.4>
(9)
<9>
5.6B 0 (9) <9>
10N
2.5 2.4 0
16V
2.4 [1.1] 0.9 0.9 4.9 [0] [2.5] 0
0 0 4.8 4.9 0.1 0
2.3
[4.2]
U402 IC B/D
FM/AM PLL
Q503, 504
MEGA BASS
0
CONTROL
0
6.8K
133
133
0 0
50V
0 0 AM FREQ
STEP
6.8K
10kHz
0
0 0
4.7U
Q501, 502
50V
MUTING
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
[
(
<
HCD-EP505
Ver 1.1
Q406, 407
B+ SWITCH
9.1
0.7 (0) <0>
50V
CN305
9P
(Page 29)
F
DISPLAY
BOARD
(Page 27)
MAIN
13
BOARD
(3/3)
MAIN
14
BOARD
133 (2/3)
CN303
11P
(Page 26)
G
DISPLAY
BOARD
(Page 29)
9kHz
MOTOR ON
MAIN
(Page
15
BOARD
27)
(3/3)
MAIN
16
BOARD
(3/3)
(Page 27)
] : AM
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