Schematic Diagram - Main Section (2/5) - Sony CX-LDB30 Service Manual

CX-LDB30/LDB50
7-10. SCHEMATIC DIAGRAM — MAIN SECTION (2/5) —
MAIN BOARD (2/5)
30
29
28
27
26
25
24
1
15 14
0 0
0.6
MAIN BOARD
(1/5)
(Page 33)
*4 *5 C410
R417,R418 R415,R416 100p
50V
470:LDB50 100:LDB30
1k:LDB30 470:LDB50
23
22
R417 R415
*4 *5
21
R418 R416
*5
*4
20
R403
4.7k
R450
10k
Q406
2SA1235TP-1EF
2.1
R451
1k
19
0 2.3
THERMAL
DET
18
R452
22k
P-GND
31
10
MAIN BOARD(3/5)
(Page 35)
CX-LDB30/LDB50
IC401
POWER AMP
IC401 STK403-120(LDB50)
STK403-090(LDB30)
SUB
13 12 11 10 9 8 7 6 5 4 3 2
0 0
0 47 0 0 0 0 20 -20
C409
100p
R427
50V
1k
R428
1k
C413 C415
10p 10p
R419 R421 R423
22k 22k 10k
R420 R422 R424
22k 22k 10k
C414 C416
R456 R458 R460 R462
10p 10p
10 10 10
R457 R459 R461 R463
10 10 10
Q407
2SC3052F-T1-LF
R455
D405
10k
2.3 1N4002B
22
MUTE
CONT
0
SHASSIS GND
*3
C424,C425
50V:LDB30
63V:LDB50
32 33
CD-P-GND
CD-D-GND
MP3GND
CD-A-GND
FUNC-GND
*6 *7
R426, R425 R429, R430
2W:LDB30 470:LDB50
3W:LDB50 1k:LDB30
1
-47
-VP
+VP
Q403
R435
2SA1579T106-RR
10k
0 0
Q404 OVERLOAD
2SA1579T106-RR R436
DET
0 10k
0 0
R437 22 R441 22
0
DC DET
R439 22 R443 22
L201
L202
R440 22 R444 22
10
R438 22 R442 22
10
11
MAIN BOARD(4/5)
(Page 36)
34 34
7V
MP3VD
D-VDD
A-VDD
CD-L
CD-R
AU-IN SW
RELAY ON
HP SW
OVER-LOAD
AU-IN L
D401
1SS355TE-17
FUNC-GND
AU-IN R
AU-IN SW
C417
0.1 50V
HP SW
L CH
A-GND
R CH
C418
0.1 50V
RELAY ON
R219
RY201
4.7k
OSA-SS-212DM3
12V
4 3 1
6 5 2 0.3
0
I-PRO
Q208
2SC3052F-T1-LF1
3.3
PROTECT
0
R227
DET
1k
NO MARK: FM
34 35 36 37 38 39 40 41 42 43 44 45
CD VM(7V)
MP3(3.3V)
DVDD(3.3V)
AVDD(3.3V)
MAIN BOARD
MGND
5
(5/5)
MGND
(Page 37)
D-GND
MP3GND
CD-L
CD-AGND
CD-R
MAIN BOARD
6
(5/5)
AUDIO-IN SW
(Page 37)
MAIN BOARD
SP ON
7
(5/5)
HP SW
(Page 37)
CN201
9P JST 1.25MM
9 L-IN (AUDIO-IN)
8 GND (AUDIO-IN)
7 R-IN (AUDIO-IN)
6 SW (AUIDIO-IN)
JACK BOARD
D
5 GND
CN203
(Page 30)
4 SW (HP)
3 HP-L
2 HP-GND
1 HP-R
0.9
SWITCH