Canon EOS Rebel T1i Instruction Manual page 208

Troubleshooting Guide
The shooting date and time displayed is incorrect.
The correct date and time has not been set (p.29).
No image appears on the TV screen.
Make sure the AV cable or HDMI cable's plug is connected all the way
in (p.156, 157).
Set the video OUT format (NTSC/PAL) to the same video format as
the TV (p.201).
Use the AV cable that came with the camera (p.156).
Printing-Related Problems
There are fewer printing effects than listed in the instruction
manual.
What the screen will display may differ depending on the printer. This
instruction manual lists all the printing effects available (p.168).
208