FujiFilm CR-IR341 Service Manual page 116

C 1 2
ONTENTS
LED functions
The SCN08A board has eight LEDs mounted on its surface to permit visual inspection of
signals. Their locations on the board and signals detected are shown below.
SCN08A board
009-051-05 009-051-04
05.31.99 FM2460
04.20.2001 FM3006
3 4 5 6
D16
S1
D15
D14
D13
D12
D11
D10
D9
D8
CR-IR341 Service Manual
7 8 9 10
HVON (HV ON LED)
This LED is OFF when reading operation is performed under
the HV ON condition. To check the LED, HV should be turned
OFF.
SOH (leading-edge sensor check LED)
Normal if this LED is ON, or if the leading edge of the IP is
located at SZ1 (IP leading-edge sensor) with this LED OFF.
If this LED is OFF or blinking (slow blinking), with the IP not
located at SZ1, and the laser is normal, then it is necessary to
check SZ1.
SOS (staring-point sensor LED)
Normal if this LED is ON. If this LED is blinking (slow blinking)
or OFF and the laser is normal, then it is necessary to check
the start-point sensor board.
POLLOCK (polygon lock LED)
When this LED is ON, the polygonal mirror is rotating at a
constant speed. If it is OFF or blinking, it is necessary to check
the polygonal mirror.
PCLK (pixel clock check LED)
When this LED is ON, a pixel clock is generated during
reading. If this LED is OFF and the laser is normal, it is
necessary to check the SCN08A board.
LCLK (line clock check LED)
When this LED is ON, a line clock is generated during reading.
If this LED is OFF and the laser is normal, it is necessary to
check the SCN08A board.
FCLK (frame clock check LED)
When this LED is ON, reading is in progress. If LED is OFF
even though the leading edge of the IP is detected
(leading-edge sensor check LED is OFF) and the laser is
normal, then it is necessary to check the SCN08A board.
LD2OK (second laser check LED)
When this LED is ON, the laser is normal. If it is OFF, it is
necessary to check the first or second laser.
LD1OK (first laser check LED)
When this LED is ON, the laser is normal. If it is OFF, it is
necessary to check the first or second laser.
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FR1H4031.EPS
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