Read Sony MDX-C7890R (serv.man2) Service Manual online
– 7 –
– 8 –
MDX-C7890R
– DISPLAY/KEY CONTROL Section –
Q802
D811 – 817,
LSW802, 807, 812
LSW801, 804, 806,
LSW808, 809 – 811,
LSW813 – 821
05
37
REIN1
D-BASS IN
KEYACK
AMBER
79
NOSE SW
12
BEEP
15
LCDANG
40
2
DATA
18
CLK
17
21
20
STB
OSC OUT
OSC IN
19
50
KEY IN1
REIN0
106 107
KEY IN0
X1
X0
X1A
X0A
RC IN0
RC IN1
46
47
49 72
93
92
73
LCD SO
13
LCD CKO
14
LCD CE
104
74
KEY ACTIVE
SWITCH
Q905
BUZZER
DRIVE
Q701
OSC
B+ SWITCH
Q806
D912
VOL+
VOL–
D900
J900
(REMOTE IN)
Q801
VLC0 – VLC5
GREEN
POWER ON
1
DIMMER
3
4
LED DRIVE
Q803
CONTRAST
SWITCHING
Q901, 902
AD ON
D
(Page 10)
DIMMER
LSW801 – 804,
LSW806 – 821
ROTARY
ENCODER
EN801
BACKUP +5V
CNP801
FRONT PANEL SIDE
BZ1
(BUZZER)
CN900
MAIN BODY SIDE
LCD +10V
LCD +10V
BATT
12
12
LSW805
D-BASS
LED DRIVE
Q804
11 – 6
22 – 25
X700
3.68MHz
X701
32kHz
KEY IN1 – KEY IN4
R845
LIQUID CRYSTAL DISPLAY DRIVER
IC801
MASTER CONTROLLER
IC700 (2/3)
LCD801
LIQUID CRYSTAL DISPLAY
26 – 90
SEG1 – SEG65
100 – 93
COM0 – COM7
VOLUME/BASS/TREBLE/
BALANCE/FADER CONTROL
EN801
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