1-29 1-30
Damaged
heating film
• Measure the heating film, refer to 1-31.
• The resistance should be around 6
Ω
• If resistance is infinite or zero, replace the heating film.
1-31 1-32
Abnormal characters
are displayed
Bad contact
between
display control
board and its
socket
• Reconnect it
Display control board 1-33
Defective
Display control
board
• Replace the whole LCD part because the display control
board and LCD are combined to one part.
1-34
Inactive keys (touch
buttons are out of
control)
Touch board
damaged
• Replace the touch board
Poor / bad
connection
between key
pad connector
and control
board.
• Reconnect it.
• If the problem still exists, replace the key pad. As 1-35
Heating film
Resistance should be <10
Ω
Fuse
resistanc
e should
be 0
Heating
film
resistance
should be
6
Ω
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