Key Pwb Circuit Diagram - JVC LT-19DA9 Series Service Manual

KEY PWB CIRCUIT DIAGRAM

1
A
KEY1
OPEN-302/1005
B
C
D
1
2
MAIN PWB(18/22)
JP681
JP2
6 5
7
4
3
2
1
12505WR-05P
RV3
SV060305E101N
R3
R5
271/F/1005
TV/AV
S1
DHT-1105TABF
R7
471/1005
MENU/OK
S3
DHT-1105TABF
R9
102/1005
VOL-
S5
DHT-1105TABF
R11
272/1005
VOL+
S7
DHT-1105TABF
ADC1 SW Setting Point Center Voltage
TV/AV/OK 0V~1.15V 0.750802139
TV/AV
Menu 1.06V~2.15V 1.644444444
MENU/OK
VOL - 2.16V~3.25V 2.708982036
VOL-
VOL+ VOL + 3.26V 4.5V 3.822516556
ADC2 SW Setting Point Center Voltage
CH + 0V~1.15V 0.750802139
CH+
CH - 1.06V~2.15V 1.644444444
CH-
Not Used 2.16V~3.25V 2.708982036
Power 3.26V 4.5V 3.822516556
STANDBY
2
(No.YA606<Rev.001>)2-89
3 4
TP5 1 TP10 KEY2
TP6 1 TP10 KEY1
1
TP7 TP10
RV4
SV060305E101N
KEY2
R4
OPEN-302/1005
R6
271/F/1005
R8
471/1005
R12
102/1005
R13
272/1005
Min Voltage Max Voltage
0.654329977 0.85828112
1.457331095 1.846939486
2.449990999 2.980406334
3.532878942 4.117521838
Min Voltage Max Voltage
0.654329977 0.85828112
1.457331095 1.846939486
2.449990999 2.980406334
3.532878942 4.117521838
3 4
2-90(No.YA606<Rev.001>)
5
CH+
S2
DHT-1105TABF
CH-
S4
DHT-1105TABF
STANDBY
S6
DHT-1105TABF
KEY PWB ASS'Y
HU-72200002
5
6
A
B
C
D
6
lt-19_26dx9_sub-03_0520_3/4_0.0