Key Board - Sony MEX-BT3600U Service Manual

IC804 TPS2051BDRG4
GND 1
IN 2
CHARGE
PUMP
IN 3
DRIVER
EN 4
UVLO
– KEY Board –
IC901 LC75826WH-US-E
64 63 62 61
CCB INTERFACE
SHIFT REGISTER
1
P1/S1
2
P2/S2
3
P3/S3
CONTROL
REGISTER
P4/S4 4
5
P5/S5
6
P6/S6
7
P7/S7
8
P8/S8
9
S9
10
S10
11
S11
12
S12
13
S13
S14 14
15
S15
16
S16
17 18 19 20
CS
CURRENT
LIMIT
THERMAL
SENCE
60 59 58 57 56 55 54 53 52 51
COMMON
DRIVER
CLOCK
GENERATOR
SEGMENT DRIVER & LATCH
21 22 23 24 25 26 27 28 29 30 31 32
IC805 TC7WH123FU (TE12R)
1
A
2
B
3
CLR
4
GND
OUT
8
7 OUT
6
OUT
OC
5
50 49
48 S48
47 S47
46 S46
45 S45
44 S44
43 S43
42 S42
41 S41
40 S40
39 S39
38 S38
37 S37
36 S36
35 S35
34 S34
33 S33
MEX-BT3600U
VCC
8
7
RX/CX
Rx/Cx Cx
6 CX
Q 5 Q
CLR
33