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

6-13. SCHEMATIC DIAGRAM – MAIN (Except AEP, UK, CH models) (3/3) Section – •
MAIN BOARD
(3/3)
(Page 25)
15
MAIN
BOARD
(1/3)
13
MAIN
BOARD
(1/3)
(Page
25)
U801
Q801
+5V REGULATOR +9V REGULATOR
5.5 2SD1616 13.9
6.1
6.2B
50V
16V
133
16
MAIN
BOARD
(1/3)
(Page
133
25)
See page 19 for Waveforms.
Q802, 803
2 (9.1) <2> 15.1 +8V REGULATOR
0 (9.4) <0>
133
2SA608
0 (9.5) <0> 15.1
9.1B 15.1
(8.6)
15.1
14.8 (0.1) <14.8>
0 (0.7) <0>
REGULATOR
9.1 15.1
CONTROL SWITCH
O G I
+12V REGULATOR
11.9 15.1
50V
12.3
133
12B
133
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.
• See page 32 for IC Block Diagrams.
5.6K MUTING
50V
133
5.6K MUTING
50V
133
50V
50V
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : TUNER
( ) : CD PLAY
< > : TAPE PLAY
Les composants identifiés par une marque 0 sont
critiques pour la sécurité. Ne les remplacer que
par une pièce portant le numéro spécifié.
27 27
U502
POWER AMP
18.5
0.7
18
50V
1.1
1.1
18
0.7
50V
37.5
U503
8.1
HEADPHONE AMP
0.6
3.6
0
0
3.6
0.6
HEADPHONE BOARD
7
8
9
4
5
6
1
2
3
H501
PHONES
HCD-EP505
Ver 1.1
CN503
4P
+
CN503
L
− SPEAKER
IMPEDANCE
−
USE 8Ω
R
+
CN504
5P
7
(Page 31)
J
POWER
BOARD
CN505
1
17
MAIN
BOARD
(2/3)
(Page 26)
5
1