Read Sony CMT-NEZ7DAB / HCD-NEZ7 Service Manual online
HCD-NEZ7
16
16
HCD-NEZ7
7-3. BLOCK DIAGRAM – PANEL/POWER SUPPLY Section –
30
LCD DATA
67
STANDBY LED
29
IIC CLK
1
LCD CS
100
LCD RST
SIRCS
4
(AC IN)
SUB POWER
TRANSFORMER
T901
MAIN POWER
TRANSFORMER
T902
SYS +3.3V
LCD +3.3V
RECT
D911 – 914
D809
D898
D922, 923
D920, 936
AMP B+
TO
POWER AMP
AMP B–
+4V
REGULATOR
IC901
+7V
REGULATOR
Q320, 321
+10V
REGULATOR
IC900
D +4V
+4V
REGULATOR
IC903
RECT
D916, 917
RECT
D918, 919
RECT
D907 – 910
RDS +3.3V
VOLTAGE
DETECT
IC803
MAIN POWER
RELAY DRIVE
RELAY DRIVE
Q311, 315
+3.3V
REGULATOR
D305
D +3.3V
M +7V
M +10V
+9V
REGULATOR
IC902
A +9V
B+ SWITCH
Q300, 301
33
DAB POWER 3
34
DAB POWER 5
97
MAIN POWER
20
AC CUT
12
RESET
REMOTE CONTROL
RECEIVER
IC802
D804, 805
(LCD BACK LIGHT)
LED DRIVE
Q806
D806
LCD801
LIQUID
CRYSTAL
DISPLAY
80 VOLUME 1
79 VOLUME 2
59 CD OPEN
ROTARY
ENCODER
RV801
VOLUME
STANDBY
52
BACKLIGHT
LED DRIVE
Q808
S801 – 813
(FRONT PANEL KEYS)
S820
(CD LID OPEN/CLOSE DETECT)
KEY0,
KEY1
KEY1
90, 89
RESET
SWITCH
Q801
AC DETECT
Q807
RY901
CD +1.5V
+1.5V
REGULATOR
IC303
DAB +5V
+5V
REGULATOR
IC951
DAB +3.3V
+3.3V
REGULATOR
IC952
74 POWER KEY
B+ SWITCH
Q809, 811
LINE FILTER
LF901
C
POWER
B
DAB
SYSTEM CONTROLLER
IC801 (3/3)
(Page 15)
(Page 15)
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