Faulty Exit Sensor - Star Micronics WinType 4000 Technical Manual

3.7 Faulty Exit Sensor

Step
1 (Initial Check)
Are any parts broken, malformed, incorrectly installed
or different from those listed in the specifications?
• Principle Parts to be Checked:
(1) Exit sensor, (2) Fuser assembly,
(3) MCU PWB, (4) Fuser harness assembly,
(5) LVPS assembly
2 (Check that power is supplied to the exit sensor.) *1
Is a voltage of 1.2VDC supplied between P13-1PIN
↔P13-2PIN?
3 (Check the ON signal for the exit sensor.) *1
Is a voltage of 5VDC supplied between
P13-3PIN↔P13-2PIN?
4 (Check the ON signal for the exit sensor.) *1
Is the voltage 0VDC between P/J13-3PIN↔P/J13-
2PIN when the exit sensor detects that paper is
present, and is a voltage of 5VDC supplied when the
exit sensor detects that paper is not present?
5 (Check the fuser harness assembly.)
Is there continuity between J13↔J132?
*1: Be sure the EP toner cartridge is installed and the front cover assembly is securely closed.
Check
– 137 –
TROUBLESHOOTING
Remedy
YES
Replace the part or
install the part
correctly.
See step 3.
See step 4.
Replace the MCU
PWB.
Replace the exit
sensor.
NO
See step 2.
See section 3.1
Faulty LVPS
Assembly 5VDC.
Replace the MCU
PWB.
See step 5.
Replace the fuser
harness assembly.