HP L1735A Serivce Manual page 44

(1)Press SOURCE button on the remote
Keypad
control and choose source to
test
Component 2 .
(2)Connect to DVD component signal
(1)Press SOURCE button on the remote
Remote
control and choose source to video 2.
Control test
(2)Connect to DVD composite signal
44
Check if the keypad
function
work well.
Check if the Remote
Control
function work well.