Jckb (1/3) And Keyb Assys - Pioneer DVR-231-S Service Manual

1

3.3 JCKB (1/3) and KEYB ASSYS

QQ
3 7 63 1515 0
A 1/3
JCKB ASSY (VWV2100)
A
B
V+5V
V+5V
CN102
VKN1240-
DBGP2
DBGP2 1
DBGP1
C
DBGP1 2
DBGP0
DBGP0 3
R109
4
RESET
100
GND 5
RXDGL
RXD1 6
TXDGL
TXD1 7
8
GND
V+5V
9
TE
L 13942296513
GND
D
E
HST_TO_M
DAT_TO_M
DAM_TO_T
ASCK
HSM_TO_T
XRST1
www
F
A 1/3
16
1
http://www.xiaoyu163.com
2
A 2/3
R144
HST_TO_M
100
A 3/3
3-C3
81
TEXTV
82
C134
R145
C120 *** 83
1K
0.1 84
85 blank
86
blank
87
blank
C121 88
GND
0.1 89
VDD3
R158
DBGP2
100 90
DBGP2
R159
DBGP1
100 91
DBGP1
R160
DBGP0
100 92
DBGP0
93 blank
94
blank
95
blank
96
blank
97 blank
DAT_TO_M R146
100 98
DAM_TO_T R147
100 99
ASCK R148
100 100
HSM_TO_T
V+5R8E
D103
1SS355-TRB
R129
22K
GND
V+5M
C112
0.1 YF
R169
0
GND
GND
XRST1
1-C3
x ao
y
. i
DVR-231-S
2
http://www.xiaoyu163.com
3
8
MRST
2-B3
GND
A 2/3
GND
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61
81. CVBSIN 50. blank
82. GND 49. blank
83. FILTSLC 48. XRGB
84. VDDVCO 47. PSMUTE
IC101
(PMC002A8)
TUNER CONTROL
98. DAT_TO_M 33. AMUTE2
32. COMPMUTE
99. DAM_TO_T
100.ASCK 31. MUTEV
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Q Q
0.1
3 6 7 1 3
C115
R164
1 2
1M
R120
***
X101
X102
GND GND
V+5V
V+5V
R155
10 k
GND GND
u163
.
3
4
2 9 9 4
GND
V+5M
60 59 58 57 56 55 54 53 52 51
50
49
48
47
46
XTHROU
45
S1
44
EPGEXT
43
RGBSEL
42
SQUEEZE
41
LETTER
40
VDD4
C116
39
GND
38
SWSTBY
37
YVSEL
36
SELV3
35
SELV2
34
SELV1
33
32 COMPMUTE
31 MUTEV
21 22 23 24 25 26 27 28 29 30
V+5M
1 5 0 5 8 2 9
GND
R131
R134 4.7K
4.7K
GND
SCL
3-C6
A 3/3
SDA
3-C6
XRST1
1-C2
A 2/3
SDET1
2-C4
KEY2
1-C4
V+5R8E
R170 D107
R171
GND GND 1SS355-TRB
GND
R223
0
L204
***
LAU220J-TA
GND
GND
R172
D106
0 1SR154-400-TRB
m
GND GND
GND
co
4
2 8
9 9
SQU
LET
0.1
A 2/3
AMUTE2
2-C4
9 4 2 8 9 9
V+5F
V+5V
V+5FP
V+5M