Sony HCD-EP505, Руководство по обслуживанию

Страница: 25 / 52

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