Panasonic KX-HDV20RU Service Manual ▷ View online
5
KX-HDV20 Series
3 Specifications
Power Consumption
Stand-by: approx. 0.5 W
Maximum Power Consumption
Approx. 1.5 W
Operating Environment
0 °C (32 °F) to 40 °C (104 °F)
LCD
KEY
Monochrome graphical 160 x 384 pixels
LCD Backlight 3levels
(Always On/Automatic/Always Off)
LCD Backlight 3levels
(Always On/Automatic/Always Off)
Flexible Buttons : 20
Page Key : 1
Page Key : 1
Dimensions
(Width x Depth x Height;
stand attached)
(Width x Depth x Height;
stand attached)
"High" position:
110 mm x 176 mm x 178 mm
(4.3 in x 6.9 in x 7.0 in)
"Middle" position:
110 mm x 176 mm x 154 mm
(4.3 in x 6.9 in x 6.1 in)
"Low" position:
110 mm x 175 mm x 121 mm
(4.3 in x 6.9 in x 4.8 in)
110 mm x 176 mm x 178 mm
(4.3 in x 6.9 in x 7.0 in)
"Middle" position:
110 mm x 176 mm x 154 mm
(4.3 in x 6.9 in x 6.1 in)
"Low" position:
110 mm x 175 mm x 121 mm
(4.3 in x 6.9 in x 4.8 in)
Weight (with stand)
430 g (0.95 lb)
Item
Specifications
*1 The KX-HDV20 can be used only when the KX-HDV230 is receiving power from the optional AC
adaptor.
Power Supply
*1
Power is supplied from the KX-HDV230.
(Use AC adaptor.not support PoE )
(Use AC adaptor.not support PoE )
6
KX-HDV20 Series
4 Technical Descriptions
4.1.
Block Diagram
7
KX-HDV20 Series
4.2.
Circuit Operations
4.2.1.
Power supply Circuit
At first, this HDV20(DSS) module must be connected to HDV230(at Upper DSS side).
The circuit converts the voltage supplied from HDV230 into the power supply of 3.3V and 5V by IC201 and IC202 (DC/DC Con-
verter IC).
The circuit converts the voltage supplied from HDV230 into the power supply of 3.3V and 5V by IC201 and IC202 (DC/DC Con-
verter IC).
D104
D102
DG
D101
D103
DG
DG
12V
L103
DG
VBUS_IN
VBUS_OUT
R157
R156
F101
JK101
6
5
4
3
2
1
7
JK102
6
5
4
3
2
1
7
L104
D106
D107
D108
Lower DSS
Upper DSS
-> HDV230
-> Lower HDV20
DG
C204
DG
DG
C211
C240
R210
IC202
2
N
I
V
8
S
S
3
W
S
4
1
D
N
G
5
B
F
7
N
E
1
T
O
O
B
6
P
M
O
C
9
2
D
N
G
C220
C207
DG
C203
DG
C213
R204
C217
C209
5V
C232
C222
R212
DG
R209
L203
L202
C221
R207
DG
C235
C206
DG
C225
C208
DG
12V
R214
C215
R203
C212
3.3V
DG
C231
C229
C239
DG
R208
C202
C214
R211
C218
C205
IC201
2
N
I
V
8
S
S
3
W
S
4
1
D
N
G
5
B
F
7
N
E
1
T
O
O
B
6
P
M
O
C
9
2
D
N
G
R202
C252
DG
R201
5V_DET
DG
C216
5V
R213
C227
TP_5V
C219
TP_3.3V
R205
R206
C210
8
KX-HDV20 Series
4.2.2.
Key Circuit
The key data is under the matrix control by IC101.
The key information output from KEYOUT is input into KEYIN, when the key is pressed.
The key information output from KEYOUT is input into KEYIN, when the key is pressed.
4.2.3.
LED Circuit
The LEDs light up in a dynamic lighting system(controllerd by IC101).
ON time 3.75ms.
ON time 3.75ms.
KEY_IN4
KEY_IN0
KEY_IN1
KEY_IN2
KEY_OUT0
KEY_OUT1
KEY_OUT2
KEY_OUT3
KEY_IN3
KEY_OUT4
FF1
1
2
FF2
1
2
FF3
1
2
FF4
1
2
FF5
1
2
FF6
1
2
FF7
1
2
FF8
1
2
FF9
1
2
FF10
1
2
FF11
1
2
FF12
1
2
FF13
1
2
FF14
1
2
FF15
1
2
FF16
1
2
FF17
1
2
FF18
1
2
FF19
1
2
FF20
1
2
PAGE
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
KEY_OUT0
KEY_OUT2
KEY_OUT3
KEY_OUT4
KEY_OUT1
KEY_IN0
KEY_IN2
KEY_IN3
KEY_IN4
KEY_IN1
IC101
77
78
87
88
89
90
91
94
95
66
LED_ST0
LED_ST2
LED_ST3
LED_ST4
LED_ST5
LED_ST6
LED_ST7
LED_ST1
LED_COM0
LED_COM2
LED_COM3
LED_COM4
LED_COM1
IC101
104
6
7
11
70
71
72
74
97
98
99
100
101
LED_STB0
LED_COM0
3.75ms
257us
LED_COM1
LED_STB0
LED_STB2
LED_STB1
LED_STB3
LED_STB4
LED_STB5
LED_STB6
LED_STB7
LED_COM0
LED_COM1
LED_COM2
LED_COM3
LED_COM4
Q114
4.7k
47k
LED108
R
LED107
R
Q117
4.7k
47k
LED120
R
LED102
R
Q116
4.7k
47k
LED104
R
LED114
R
DG
Q111
4.7k
47k
LED106
R
5V
LED110
R
LED117
R
RA101
18
27
36
45
5V
LED118
R
LED119
R
LED111
R
LED116
R
LED113
R
LED109
R
LED103
R
LED101
R
LED115
R
LED105
R
LED112
R
Q113
4.7k
47k
Q112
4.7k
47k
Q115
4.7k
47k
Q110
4.7k
47k
RA102
18
27
36
45
Q118
R143
R148
DG
Q119
R144
R149
DG
Q120
R145
R150
DG
Q121
R146
R151
DG
Q122
R147
R152
DG
Q102
4.7k
10k
Q103
4.7k
10k
Q104
4.7k
10k
Q105
4.7k
10k
Q106
4.7k
10k
Q107
4.7k
10k
R129
R131
R132
R133
Q108
4.7k
10k
Q109
4.7k
10k
R128
R130
R134
R135
LED121
B
LED122
B
LED123
B
LED124
B
LED125
B
LED126
B
LED127
B
LED128
B
LED129
B
LED130
B
LED131
B
LED132
B
LED133
B
LED134
B
LED135
B
LED136
B
LED137
B
LED138
B
LED139
B
LED140
B
FF1
FF2
FF3
FF4
FF5
FF6
FF7
FF8
FF9
FF10
FF11
FF12
FF13
FF14
FF15
FF16
FF17
FF18
FF19
FF20
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