-50-
IC1821
12
O
MCLK_SEL
Not used
13
O
K03
Key Scan Output
TC74LCX574
14
O
K02
Key Scan Output
15
O
K01
Key Scan Output
16
O
READY_LED
Ready LED
17
O
PWR_LED
Power LED
18
O
R/C_1/2
19
O
LAMP_LED
Lamp Replace LED
IC1822
12
O
FAN_SW
Power ON: High
13
O
SI_SW
TC74LCX574
14
O
ON_15V
Standby: Low
15
O
ON_5V
Standby: Low
16
O
ON_3.5V
Standby: Low
17
O
3L_EN
18
O
DDC_SW2
DDC switch
19
O
DDC_SW1
DDC switch
IC1823
12
O
MCLK_SEL
13
O
Not used
TC74LCX574
14
O
AV15K_SW
15
O
AV720P50_SW
720P/50Hz Sync switch
16
O
PC/AV_SW
PC2 Monitor Output switch
17
O
COMP1/2_SW
Component_1/2 switch
18
O
IRM_RST
IC401 Reset
19
O
SIRST
IC8001 Reset
IC1824
12
O
HOTPLUG
HDMI Connector Sensor
13
O
TEMP_LED
Warning Temperature LED
TC74LCX574
14
O
Not used
15
O
Not used
16
O
Not used
17
O
IRS_OPN
Iris Control_Open
18
O
IRS_CLS
Iris Control_Close
19
O
LAMP_POW
Lamp Power switch
Lamp Power ON: Low
IC1801
2
I
K11
Key Input 1
3
I
K12
Key Input 2
TC74LCX541
4
I
K13
Key Input 3
5
I
POWER_FAIL
Power Fail Input
Power Fail: Low
6
I
DOOR_SENS
Door Sensor Input
Door Open: Low
7
I
LAMP_ERR
Lamp Error Input
Lamp Error: High
8
I
OPTION
Option Input
9
I
R/C_1/2
IC Ref. No
Pin
I/O
Signal Name
Function
Note
●
Parallel Bus I/O Expander
Control Port Functions