Philips KV-S5055C, Руководство по обслуживанию

Страница: 110 / 249

110
3. Starting Sensor does not work,
correctly. 1. Execute Key/Sensor test in the Sec. 9.3.6 to
check the sensor condition.
2. Check the sensor alignment is proper.
(whether the sensor direction faces to
its reflector)
3. Check the following connection and
soldering condition on each connector.
a. CN2014 (STARTING SENSOR Board)
to CN2008 (USS RELAY Board)
b. CN2006 (USS RELAY Board)
to CN1008 (CONTROL Board)
4. Check the following signals.
a. STARTING signal (CN2008-1st pin,
CN1008-2nd pin)
→
0 V (when nonexistence on the
Starting Sensor)
b. Check the reference signal for the
STARTING signal on the CONTROL
Board.
→
IC0023-3rd pin: 1.5 V or less
→
IC0025-2nd pin: Approx. 1.5 V
c. Check comparator output signal.
→
IC0017-8th pin: 3.3 V
(when no document exists)
5. Replace faulty parts or boards.
4. Mechanical problem (Drive
Rollers, Drive Belt) 1. Check the Starting Sensor’s mechanical
position and its status.
2. Execute
Conveyor Motor test in Sec. 9.3.6
to check the mechanical condition.
3. Check whether the Drive Rollers (1 and 2),
and Drive Belt, and also check whether the
conveyors to support the Drive Rollers are
put together into the scanner, properly.
4. Check the surfaces of the Drive Rollers (1
and 2).
a. Configuration:
Do the rollers swell irregularly?
→
Replace the rollers.
b. Whether the roller surfaces are dirty
→
Clean the surfaces.
5. Check whether the Drive Belt tension is
proper.
→
Re-adjust the belt tension.
U14 (Conveyor Jam3:
Paper did not reach the
Exit Sensor. 14 00 00 00 1. Document remains between
Starting Sensor and Exit Sensor.
Remove the document from the scanner.
2. Paper dust exists on or around
the Exit Sensor. 1. Blow off the dirt with the accessory blower.
(See Sec.7.)
2. Execute
Key/Sensor and Sensor Sensitive
Level tests in Sec.9.3.6 to check the sensor
condition.
Error Code Possible Cause Check Point Remarks
Classified Code ST1 ST2 ST3 ST4