Read Sony HCD-FX250 Service Manual online
HCD-FX250
HCD-FX250
11
11
5-2. BLOCK DIAGRAM - OUTPUT, PANEL, POWER SUPPLY Section -
SYSTEM CONTROLLER
IC801 (2/2)
RESET 11
35
O-POWER
MAIN POWER
ON/OFF CONTROL
Q909
+9V
REGULATOR
IC901
RESET SIGNAL
GENERATOR
IC802
+4V
REGULATOR
IC970
+9V
+7V
REGULATOR
Q915, 931, 932, 940
REGULATOR
Q910, 930, 934
RESET
SWITCH
Q802
SYSTEM +3.3V
D801
D907
VSTBY
RECT
D925 – 928
I_POWER_MONITOR 26
X802
15MHz
Main Clock (15MHz)
Main Clock (15MHz)
16
15
X801
32.768kHz
Sub Clock (32kHz)
Sub Clock (32kHz)
13
12
I-RMC(SIRCS)
29
REMOTE CONTROL
RECEIVER
IC860
LED DRIVE
Q860
D860
(LCD BACK LIGHT)
O-LED-LCD
87
LCD801
LIQUID
CRYSTAL
DISPLAY
ROTARY
ENCODER
S850
VOLUME
S820 – 824,
S830 – 833
(FRONT PANEL KEYS)
I-KEY1, I-KEY2
19, 20
I-VOL-ENC-A,
I-VOL-ENC-B
I-VOL-ENC-B
32, 33
COM1 – COM4
83 – 86
SEG1 – SEG32
46 – 53, 56 – 79
_I-AC-CUT 27
VM (7V)
AMP VCC
DAB +1.2V
D953, 954
D802
+1.2V
REGULATOR
IC754
CD +3.3V
+3.3V
REGULATOR
IC980, Q981, 982
OVER VOLTAGE
DETECT
Q960
D910
D913
D931
PROTECT
DETECT
Q987 – 989
30
I-PROTECT
38
O-DAB-1.2V
36
O-CD-POW
PROTECT
SWITCH
Q801
R-CH
R-CH
J320
5 IN-L4
28
SDA
27
SCL
32
12
IN-L1
SEL L
1 IN-L2
O-AUDIO IC-DA
TA
23
O-AUDIO IC-CLK
24
I-LEVEL
25
O-AMP-ON
34
13
VOL L
ELECTRICAL VOLUME,
INPUT SELECTOR
IC301
: TUNER (DAB/FM)
: CD PLAY
SIGNAL PATH
R-ch is omitted due to same as L-ch.
: AUDIO IN
A
CD L
B
DAB L
MIXER
IC310
25
OUT L
24
SB L
J350
R-CH
PHONES
POWER
AMP
IC350
STANDBY
SWITCH
Q902, 903
LEVEL
DETECT
Q301, 302
+
–
–
–
+
J351
OVER LOAD
DETECT
Q150, 250
AUDUO IN
39
O-DAB-3V
S840
I/
1
_I_WAKEUP
28
SPEAKER
R
L
RECT
D901, 904,
D905, 906
T002
SUB POWER
TRANSFORMER
T001
MAIN POWER
TRANSFORMER
(AC IN)
RY001
F002
DAB +3.3V
+3.3V
REGULATOR
IC950
(Page 10)
(Page 10)
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