Read Sony CMT-EH55DAB / HCD-EH55DAB Service Manual online
HCD-EH55DAB
HCD-EH55DAB
14
14
7-3. BLOCK DIAGRAM - PANEL, POWER SUPPLY Section -
RMC
9
SYSTEM CONTROLLER
IC701 (3/3)
(AC IN)
F001
PT005
POWER
TRANSFORMER
SYS +3.3V
D702
D801, 804
D191 – 193
D372
AMP B+
RECT
D107 – 110
B+ SWITCH
Q351, 352
AC DETECT
Q371, 372
AC DETECT
Q121, 122
VOLTAGE
DETECT
Q705, 706
RECT
D111, 113
VSTBY
+9V
REGULATOR
Q101 – 103
DAB +9V
VM +7V
+9V
46
POWER_ON
42
HOLD
36
P_MONI
54
REST
REMOTE CONTROL
RECEIVER
IC703
LED DRIVE
Q707
LED701
(LCD BACK LIGHT)
LED
1
LED DRIVE
Q711, 712
LED_STBY
22
LED702
LCD702
LIQUID
CRYSTAL
DISPLAY
48 RE_VOL
2 CD OPEN/CLOSE
ROTARY
ENCODER
SW700
VOLUME
STANDBY
SW701 – 711
(FRONT PANEL KEYS)
SW750
(CD LID OPEN/CLOSE DETECT)
KEY1 – KEY3
37, 38, 41
COM0 – COM3
59 – 62
SEG0 – SEG31
63, 64, 67 – 89, 94 – 100
RESET
SWITCH
Q704
LF901
LINE FILTER
REGULATOR
Q701 – 703
+3.3V
REGULATOR
IC707
+5V
REGULATOR
IC102
+3.3V
REGULATOR
Q191
+1.2V
REGULATOR
IC601
+1.5V
REGULATOR
IC201
+1.5V
REGULATOR
IC102
VOLTAGE
DETECT
IC101
B+ SWITCH
Q713, 714
USB AVDD +3.3V
USB DVDD +3.3V
USB +1.5V
DAB +3.3V
CD +3.3V
VDD +1.5V
DAB +1.2V
24
USB_REG_ON
28
DAB_3.3V
27
DAB_1.2V
23
CD_ON
RECT
D901, 902
+5V
REGULATOR
IC901
VBUS POWER
ON/OFF SWITCH
IC103
VBUS B+
21
USB_EN
20
USB_FLG
+
B+ SWITCH
Q196 – 198
B+ SWITCH
Q194, 195
DC_DET
B
(Page 13)
Click on the first or last page to see other CMT-EH55DAB / HCD-EH55DAB service manuals if exist.