4 ] No Key Entry Possible - Brother PT-1090 Service Manual

[ 4 ] No key entry possible

No key entry is possible.
(Or, no correct key entry is
possible.)
Any dust or foreign
material on the key
Replace the main PCB ASSY
and press keys to check.
Normal
The contact keypad
Replace it.
Normal
The rubber keypad is defective.
Replace it.
Y
contacts?
N
Y
key entry?
N
is defective.
Y
key entry?
N
IV - 7
Clean the key contacts
or replace the rubber keypad.
End of repair.
The main PCB ASSY removed is
defective.
Regulate the motor speed.
(Refer to Chapter III, Section 3.2,
PRINT1 submode.)
End of repair.