Ricoh Neptune-P1 Service Manual page 413

6. Details
6
Also, two other sensors detect roll end if the core of the paper roll is a color other than black:
• Roll end sensor 3 (EXP) [C] detects the trailing edge of the roll when roll 1 has no more paper.
• Roll end sensor 4 (EXP) [D] detects the trailing edge of the roll when roll 2 has no more paper.
The machine also detects roll end if the RF exit sensor [E] does not detect a leading edge after paper feed
starts.
• If the leading edge of the sheet does not get to the paper exit sensor from Roll 1 in 3.2 seconds or
less, the machine detects paper end (or roll not installed).
• If the leading edge of the sheet does not get to the paper exit sensor from Roll 2 in 6.7 seconds or
less, the machine detects paper end (or roll not installed).
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