Fellowes Standard Horizon SRN-9x, Service Manual

Page: 64 / 67

R O T A R Y
PAGE 62
S E R V I C E
If all else fails, replace the control PCB.
17.7..... Trouble Shooting - Machine Will Not Number
Sheets feed but will not number:- Check that the numbering ‘on/off’
switch on the control panel is down to the ‘on’ position.
Check that the sensor cables are properly installed and
clamped into the correct positions in their 4-way plug and
that there are no stray strands of wire which could short out
on the lid. Also ensure that the 4-way sensor plug is firmly
installed into its mating header on the control PCB.
Release the upper sensor and clean both sensor lenses.
Check that the LED on the control PCB is not illuminated.
This indicator should only illuminate when paper is between
the upper & lower sensors, but it will also illuminate if the
sensors or their cables are damaged.
If the LED is illuminated, check the connections to terminals
4, 5, 6 & 7 on the PCB and check that these wires are not
shorting. Also check the soldered connections to the phono
plugs and sockets to ensure they are not shorting. Finally
replace the PCB and / or the sensors.
If the LED is not illuminated, Check the security of the 6
way socket on the rear of the control box and the wires from
the socket to terminals 9, 10, 11, 14, 15 & 16 on the control
PCB.
Check the connections to the main clutch coil (red & black
wires).
Check the main clutch coil resistance which should be 10
Ohms and replace the coil if this is incorrect otherwise
replace the PCB.
If the clutch does not operate in 'manual' mode, check the
wiring between the numbering auto / man switch on the
control panel and terminals 16 & 17 on the PCB.
Section 17 ELECTRICAL - SUCTION