Philips HTS3021/98 Service Manual page 30

5
LED+KEY BOARD SCHEMATIC DIAGRAM
R527
R526
10K/ NC
10K/ NC
VOL
UP
3
D
2
DW DW DW DW
1
CB506
CB533
3 HEADER CB507
ESD
150pF
150pF
VCC
4/2.0 HEADER
J500
SW5
POWER/STB
3 4 1
STB
1 2 2
3
SPOWER1 KEY
4
C
D511
LED DIP2.54
J506
LED R523 220
4
GND
3
POWER/STB
2
STB
1
CB522 CB523 CB524
4/2.0 HEADER CB501 150pF
NC ESD NC ESD ESD
CB502 150pF
B
R502
VCC
CB539
ESD
3/2.5 HEADER
K_L0 100 R528
3
2
K_R0 100 R529
1
CB531
CB516 CB517 CB530
J510
ESD/NC 0.1uF /NC ESD/NC
0.1uF /NC
J511
A
K_L1 100 R530
3
2
K_R1 100 R531
1
CB529 CB518 CB519 CB528
3/2.0 HEADER
ESD/NC 0.1uF /NC ESD/NC
0.1uF /NC
5
4
U300
F2
CB532
ESD
-24V VCC
U520
40
GR5
VCC
41
GR4
42
GR3
43
GR2
44
GR1
45
VDD
PSW
46
VFD CONTROLLER
PSW
47
GPIO4
V63111
48
GPIO3 SG4/KS4
49
GPIO2 SG3/KS3
50
GPIO1 SG2/KS2
51
GND SG1/KS1
52
OSC2
V63111/SMD
Y505 PT6-52-1
455KHz
22K R501 2K2
R503 10K
+
CE501
47uF/10V
1
POWER/STB
2
3
VCC
J515/ MP3
1
2
3
J508/ MIC
4
3
VFDA
200780-1A0
F1
PSW
26
SG12
25
SG11
24
SG10
23
SG9
22
SG8
21
SG7
20
SG6
19
SG5
18
17
16
15
VCC
14
VDD
CB538 CB521 CB536
0.1uF 0.1uF
0.1uF STB
SW1 SW2
3 4 3 4
1 2 1 2
OPEN/CLOSE KEY PLAY/PAUSE KEY
SW3
3 4
1 2
STOP KEY
SW4
3 4
1 2
SOURCE KEY
3
2
USB
4
R534
3
R535
2
R536
1
VCC
R518
4.7K
R516
2
10K
Reset
R519 0 3
IMP810
CE5xx + Q501
10uF/16V 1
VCC
VCC
R520 4.7K
IR
R521 33 CB537
IR_V6111
ESD 10uF/10v
CB515
22pF
IR
GND
VFD_CLK
VFD_STB
VFD_DATA
UP R524 0
U_P
DW R525 0 DONW
BT-14S
2
1
J512
GND
1
33 UP
2
33 UB UB
3
0 +5V
4
4 HEADER
CB520 CB525 CB526 CB527
ESD ESD ESD/NC
0.1uF
STB ON/OFF
1/0
J507
ON/OFF
1
R540 0R VCC
2
GND
3
CE506 -24V
4
+ CB514 CB535 F2
5
F1
6
0.1uF 0.1uF
6 HEADER
R541 NC 0
J505
7 HEADER
1
2
3
4
5
6
R537 NC 0
7
8
R539 NC 0
IR501
R517 10
VCC
CE502
R505 10K/NC CB513
+
10uF/10V 0.1uF
1
D
C
B
A