Read Sony SCD-XB780 Service Manual online
SCD-XB780
24
24
5-5.
BLOCK DIAGRAM – DISPLAY/KEY CONTROL/POWER SUPPLY Section –
S810 – 813
AMS
L
l
S801 – 806
PUSH ENTER
S830
ROTARY
ENCODER
REMOTE
CONTROL
RECEIVER
IC802
60
KEY0
61
KEY1
62
KEY2
82
RM
57
LED DRV
53
FLOUT
54
FLCLK
56
FLCS
55 FL. DATA (DI)
54 FL. CLK (CL)
53 FLT (CE)
OSC
C815,
R801
50 OSC0
51 OSC1
52
FLRST
31
(Page 22)
XRST DP
31
S35
61 – 64, 1 – 30
45 – 32
46, 47
3G – 16G
1G, 2G
S1 – S34
CPU
IC901 (3/3)
FLUORESCENT INDICATOR TUBE DRIVER
IC801
SEGMENT
DRIVE
Q803
D803
(MULTI-CHANNEL)
LED
DRIVE
Q701, 702
GRID
DRIVE
Q801, 802
FL801
FLUORESCENT
INDICATOR
TUBE
F1
F2
RECT
D905, 906
+3.3V
DAC+5V
+3.3V
REGULATOR
IC302
+5V
REGULATOR
IC903
A+7V
+7V
REGULATOR
IC901
A+UR
RECT
D901, 902
A–7V
–7V
REGULATOR
IC902
RECT
D903, 904
A–UR
VFL–33V
FLUORESCENT INDICATOR
TUBE DRIVER
(IC801)
–33V
REGULATOR
Q921
RECT
D917 – 920
T901
POWER
TRANSFORMER
R954
D302
D301
T902
POWER
TRANSFORMER
F1
F2
D922
D+3.3V
+3.3V
REGULATOR
IC904
RECT
D909 – 912
A+3.3V
+2.5V
REGULATOR
IC702
+2.5V
+5V
REGULATOR
IC906
D+5V
A+5V
M+12V
(MOTOR DRIVE (IC512))
+12V
REGULATOR
IC905
RECT
D913 – 916
+5V
REGULATOR
IC504
+5V
(COIL/MOTOR DRIVE (IC502))
S991
POWER
LINE
FILTER
L901
(AC IN)
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