HP 8550 Service Manual - Page 81

Table 36. Copier, I/O mode Level 2 and Level 3 menus Level 2 Level 3 (address) Bit DC-CON P001 4 (input ports of the dc controller 3 PCB) 2 1 0 P002 5 4 3 1 0 P003 1 0 Item FDOUT FXOUTS SEPS FEEDS REGS SWBKS DUPPS LDECKS UPDECKS MPDFS TMPSNS HUMSNS Description Face-down tray delivery sensor (PS11) ("1" when paper is detected) Fusing delivery sensor (PS1903) ("1" when paper is detected) Separation sensor (PS5) ("1" when paper is detected) Pick-up paper sensor (PS17) ("1" when paper is detected) Registration paper sensor (PS1) ("1" when paper is detected) Duplexing unit reversal paper sensor (PS26) ("1" when paper is detected) For bit 5, the door must be closed. Defeat the door switch to simulate a closed door. Duplexing unit paper sensor (PS24) ("1" when paper is detected) For bit 4, the door must be closed. Defeat the door switch to simulate a closed door. Cassette 2 paper sensor (PS1207) ("1" when paper is detected) Cassette 1 paper absent sensor (PS1208) ("1" when paper is detected) Multifeeder tray last paper sensor (PS19) ("1" when no more than one sheet is set) Temperature and humidity sensor 00: normal temperature/normal humidity 01: high temperature/high humidity 10: normal temperature/low humidity 11: low temperature/low humidity EN Service mode 79