Ricoh HL-F1, Field Service Manual

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5. Press the "Stop/Exit" key so that the machine returns to the initial stage of the maintenance mode.
Sensor Operational Check (Function code 32)
Function
This function allows you to check whether the 9 sensors.
Operating Procedure
1. Press the "3" and "2" keys in this order in the initial stage of the maintenance mode. The machine
beeps 1100 Hz and 400 Hz tones cyclically through the following volumes for testing the speaker.
To stop beeping, press the "Menu/Set" key.
• OFF 400 Hz Low 400 Hz Medium 400 Hz High OFF 1100 Hz Low 1000 Hz
Medium 1000 Hz High OFF
If the sensing status are as listed below, the LCD will show the following:
"DFDRCVHK" and "NTMNRSTNKOFU" (which can be switched by pressing the "Start" key for
machines.)
Given below is the relationship between the LCD indication, sensor names and sensor status.
LCD Sensors Sensing status
DF Document front sensor No document detected.
DR Document rear sensor No document detected.
CV Cover sensor Front cover closed.
HK Hook Switch On-hook state
NT New toner sensor New toner detected.
MN Manual insertion sensor No paper detected.
RS Registration sensor No paper detected.
TN Toner sensor Toner detected.
KO Tail edge sensor No paper detected.
FU Fixing sensor No recording paper detected.
2. Change the detecting conditions to check that the indication on the LCD changes according to the
sensor states. For instance, insert paper through the document front (or rear) sensor or the registration
Detailed Description of Maintenance-Mode Functions
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