Sanyo PLV-Z4 Service Manual page 86

Control Port Functions
● Parallel Bus I/O Expander
IC Ref. No Pin I/O
IC1801
2
3
TC74LCX541
4
5
6
7
8
9
IC1821
12 O
13 O
TC74LCX574
14 O
15 O
16 O
17 O
18 O
19 O
Signal Name
I K11
I K12
I K13
I POWER_FAIL
I P-KEY_PW
I LAMP_ERR
I OPTION
I HDMI_SW
HOT_PLUG
READY_LED
POWER_LED
TEMP_LED
LAMP_LED
K03
K02
K01
Function
Key Input 1
Key Input 2
Key Input 3
Power Fail Input
Power key Input
Lamp Error Input
Option Input
HDMI
Key Scan Output
Key Scan Output
Key Scan Output
-86-
Note
Power Fail: Low
Lamp Error: High