Brother LX-200 Service Manual page 170

10
Lamination is not normal.
a. Defective film type (ENC) detector.
b. Defective document or film.
Problem Check Item
a. Defective film Is the white lead connector
type (ENC) connected to CN3 on the
detector. Main PCB?
Is the white lead harness
assy connected to the ENC
sensor assy?
Is the ENC sensor assy
correctly installed on the
cassette holder?
Continuity in ENC harness
assy?
When the output from output
port P30 (Pin 33) of the main
CPU#1 is Low, does the
output from CN3 Pin 2 vary
between 0 and 4V DC due to
black and silver targets?
When a signal is input to
CN3 Pin 2, does the signal
change at output port TC1
(Pin 19) of the main CPU?
b. Defective Is a cartridge mounted?
document or
film
Does film remain in the
cartridge?
Is silver-black foil stuck to the
edge of the film?
Cause
Defective harness assy Correctly connect the
connection. harness assy.
Defective harness assy Correctly connect the
connection. harness assy.
Incorrectly installed Correctly install the
ENC sensor assy. ENC sensor assy.
Defective ENC harness Replace the ENC
assy. harness assy.
Defective photosensor Replace ENC sensor
in ENC sensor assy. assy.
ENC sensor assy Replace ENC sensor
incorrectly adjusted. assy.
Defective IC#5. Replace Main PCB
assy.
Defective R47. Replace Main PCB
assy.
Continuity problem in Replace Main PCB
Main PCB. assy.
No cartridge mounted. Mount a cartridge.
No film remaining. Replace the film.
Defective film. Replace the film.
7-18
Remedy Repair
Replace the
photosensor.
Replace
IC#5.
Replace R47.
See
Section
3.3.3
3.3.4
3.3.1
3.3.3
3.3.4
3.3.5
3.4
3.6.1
3.7.1
3.8.1
3.8.2
3.9
3.10
3.11.1
3.12.1
3.13.1
3.16
3.3.3
3.3.4
3.3.5
3.5.1
6.2