Brother DX-2000, Руководство по обслуживанию

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V-1
CHAPTER V
TROUBLESHOOTING
Problem Cause Check Result Remedy
Misoperation The Duplex mode cannot
be set on the panel. Is the modular cable connected properly? No Turn off the power to the printer, and connect
the modular cable properly. Then, turn on the
power again.
Modular cable
Main PCB Does a voltage of 24V appear at pin 14 or
15 of I/F PCB’s connector P4? Yes Replace the main PCB.
Misoperation “NO DX TRAY” error
message appears. Is the Duplex tray loaded properly into the
cassette according to the manual? No Load the Duplex tray into the cassette according
to the manual.
Main PCB Does a voltage of 24V appear at pins 3
and 4 of I/F PCB’s connector P3, and does
the voltage vary from 0V to 24V at pins 1,
2, 5 and 6 when the paper cassette is set? No Replace the main PCB.
Replace the modular cable.
Paper pressure
motor Does the paper pressure motor run when
the paper cassette is set? No Replace the paper pressure motor.
Yes Replace the cassette sensor lever and
leaf switch. Refer to Figure 4.26 (
IV
-9).
Misoperation “DX OPEN” error message
appears. Is the hook of the Duplex unit’s reversing
mechanism engaged completely with the
outside frame? No Close the reversing mechanism so as to engage
the hook securely with the outside frame.
Troubleshooting (1)
Open cover sensor
Main PCB Does a voltage of 5V appear at pin 3 of I/F
PCB’s connector P1 when the cover is
closed? No Replace the open cover sensor or cover sensor
harness.
Yes Replace the main PCB.
No
Main PCB “DX FAN MALF” error
message apprears. Does a voltage of more than15V appear
at pin 1 of main PCB’s connector P1? No Replace the main PCB.
Fan
Main PCB Is the voltage 0V at pin 2 of main PCB’s
connector P1? No Replace the fan.
Yes Replace the main PCB.