Block Diagram - Display/Key Control Section - Sony XR-C7220R Service Manual

6-3. BLOCK DIAGRAM – DISPLAY/KEY CONTROL Section –
LSW900 – 910,
D510
LSW912 – 918,
S900, SW801
J500
REMOTE IN
48 72 46
93 92 73
X600 X601
3.68MHz 32.768kHz
RE900
VOLUME/BASS/TREBLE/
BALANCE/FADER CONTROL
ROTARY
ENCODER
RE900
D506
KEY ACTIVE
BACKUP +5V
SWITCH
Q510, 511
47 36 37 76 35
74 13 14 16 32
R952
OSC
21 20 18 17 19 14
05
– 27 –
BUZZER
SW500
DRIVE
(NOSE DETECT)
Q601
80 15
SYSTEM CONTROLLER
IC600 (3/4)
LSW900, 901, 903,
LSW904, 906 – 910,
LSW912 – 918
LED DRIVE LED DRIVE
Q901 Q900
Q903
2
LIQUID CRYSTAL DISPLAY DRIVER
IC900
SEG101 – SEG165 COM100 – COM107
26 – 90 100 – 93
LIQUID CRYSTAL DISPLAY
LCD900
LED800
(TAPE WINDOW)
LED802
6
LED800, 802
LED DRIVE
BZ600
Q501
(BUZZER)
59
41
P-ON +10V
LCD +10V
LED900 – 907,
LSW902, 905
CONTRAST
SWITCHING LCD +10V
Q508, 509
Q902
1 11 – 6
VLC0 – VLC5
– 28 –
XR-C7220R