Keyboard Unit - Pioneer DEH-2790MP/XN/ID Service Manual

5
RESET
A
S-80834CNY
60
TUNPDO 11
TUNPDI
LDET 61
LDET
TUNPDI 12
TUNPDO
SL
76
SL
TUNPCK
13
TUNPCK
CE1 56
TUNPCE1
CE2 55
TUNPCE2
SYSTEM CONTROLLER
IC 601(1/2)
PE5447A
ELECTRONIC VOLUME/
SOURCE SELECTOR
TUN L 2
10
IN1-L
F Lch
IC 151
11
CDL 3 PML010A
R Lch
IN2-L
48
MUTE
43
SYSPW
SYSTEM CONTROLLER
IC 601(2/2)
PE5447A
70
X1
X601
12.58291MHz
69
X2
VDD
21
SWVDD
SWVDD
78 66
SOURCE
INTRQ
VDSENS
65
DSENS
DSENS
B.UP
Q822
22
ILMPW
9
DPDT
8
KYDT
5
6
RESET
IC 961
VDD
32
DALMON
64
BSENS
BSENS
63
ASENS
ASENS
VCC
MUTE
Q452(1/2)
TU 3.3V
MUTE
Q452(2/2)
CN831 CN1801
Q801
SWVDD
5 5
SW5V
SOURCE
SOURCE
6 6
DSENS
8 8
Q821
ILM
7 7
DPDT
4 4
KYDT
3 3
6
7
VDD REGULATOR
Q911
VDD
Q912
BACKUP SENSE
B.UP
Q931
ACC
ACC SENSE
B.UP
POWER AMP
20 6
14
23
FLIN
IC 302
FL-
PAL007A 21
FL+
12
RLIN
RL-
RL+
25
22
BREM
MUTE
STBY
4
TUN 3V REG. SYS 8V REG.
Q921
I C 901
BA33BC0FP
Q923
18
DPDT
20
KYDT
10
SW5V VLCD
17
REM
56
VDD
DEH-2790MP/XN/ID
7
CN352 REAR OUTPUT
R Lch
2
Q352
CN901
FUSE
1 1
10A
3 3
2 2
10 10
12 12
3
9 9
5
11 11
B. REMOTE
6 6
B.UP
SYSPW
SYSPW
B

KEYBOARD UNIT

KEY MATRIX
KEY DATA
22
X0
X1801
5MHz
23
X1
LCD DRIVER/
KEY CONTROLLER
IC 1801
PD6340A
8
A
B
BACK UP
ACC
GND
C
FL-
FL+
RL-
RL+
B.REM
D
E
F
LCD
15
8