Troubleshooting
Rev. A
5-
Table 5-2. Sensor Status
Sensor
Connector No.
Test pin No.
Signal level Detected condition
HP sensor CN6
Close
∗
1
In the false absorbing position
Pin 1 and Pin 2
Open
∗
2
Off the false absorbing position
Rear PE sensor CN5 HIGH Paper loaded
Pin 1 and Pin 2 LOW No paper loaded
Front PE sensor CN4 HIGH Paper loaded
Pin 1 and Pin 2 LOW No paper loaded
Release sensor CN3 HIGH Tractor feed mode
Pin 1 and Pin 2 LOW Friction feed mode
Black ink cartridge CN14 HIGH No black ink cartridge installed
sensor Pin 3 and Pin 4 LOW Black ink cartridge installed
Cyan ink cartridge CN13 HIGH No cyan ink cartridge installed
sensor Pin 3 and Pin 4 LOW Cyan ink cartridge installed
Magenta ink cartridge CN7 HIGH No magenta ink cartridge installed
sensor Pin 3 and Pin 4 LOW Magenta ink cartridge installed
Yellow ink cartridge CN12 HIGH No yellow ink cartridge installed
sensor Pin 3 and Pin 4 LOW Yellow ink cartridge installed
Black ink end sensor CN14 HIGH Black Ink end
Pin 1 and Pin 2 LOW Black Ink remaining
Cyan ink end sensor CN13 HIGH Cyan Ink end
Pin 1 and Pin 2 LOW Cyan Ink remaining
Magenta ink end CN7 HIGH Magenta Ink end
sensor Pin 1 and Pin 2 LOW Magenta Ink remaining
Yellow ink end sensor CN12 HIGH Yellow Ink end
Pin 1 and Pin 2 LOW Yellow Ink remaining
ASF PW sensor
CN8
Pin 2 and Pin 4
Analog data
Maximum 10kΩ
ASF PL sensor CN11 HIGH Not set
Pin 1 and Pin 2,
Pin 3 and Pin 4,
Pin 5 and Pin 6
LOW Set
ASF PQ sensor
CN10
Pin 3 and Pin 2
Analog data
Maximum 10kΩ
Platen gap sensor CN9 HIGH Thick paper side
Pin 1 and Pin 2 LOW Thin paper side
CR PW sensor CN21 HIGH Paper detected
Pin 24 and Pin 25(GND) LOW No paper detected
Thermistor
CN18
Pin 2 and GND
Analog data
Maximum 10kΩ (at 24°C)
∗1: When it is close, output voltage level is 2.5
or higher.
∗2: When it is open, output voltage level is lower than 2.5V.
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