Epson Stylus COLOR 3000 Service Manual - Page 130

Sensor, Connector No., Test pin No., Signal level, Detected condition, Troubleshooting, Rev.

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Troubleshooting Table 5-2. Sensor Status Sensor Connector No. Test pin No. Signal level Detected condition HP sensor CN6 Pin 1 and Pin 2 Close ∗1 Open ∗2 In the false absorbing position 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. 5-2 Rev. A

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Troubleshooting
Rev. A
5-2
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 10k
Ω
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 10k
Ω
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 10k
Ω
(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.