FujiFilm CR-IR341, Service Manual

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CR-IR341 Service Manual MC - 156
009-051-04
05.31.99 FM2460
2 3 4 5 6 7 9 10 1 8
C
ONTENTS
MC - 156
9.6 Checking and Replacing SYN08A Board
First check the SCN08A board, LDD08A board, and polygonal mirror assembly before
checking the SYN08A board.
“10.1 Checking and Replacing SCN08A Board,” “9.4 Checking and Replacing LD As-
sembly,” “9.5 Checking and Replacing Polygonal Mirror Assembly”
CAUTIONS
• Do not disconnect the connectors CN2 and 3 from the LDD08A board. If they are discon-
nected, the LD protection is disabled, so that the LD may fail.
• Do not touch the patterns and ICs of the LDD08A board.
• Carefully handle the scanning optics unit, exercising care to avoid shock to it.
• When the top cover of the scanning optics unit is removed, use care to prevent admittance of
dust.
• When performing the procedures with the top cover removed, wear a mask to prevent saliva
from sputtering around.
• When servicing any printed circuit board, be sure to wear an anti-static wristband to ensure
proper grounding. If not, static electricity built on the human body may cause damage to
electric parts mounted on the board.
■
Checks
CAUTION
Before removing the covers, be sure to turn OFF the high-voltage switch. If the machine is
powered ON with any of the covers removed, the photomultiplier will be damaged.
If anything abnormal is found during checks, replace the SYN08A board, and then check it
again.
(1) Power ON the machine.
(2) Touch the U-Utility button.
➮
The screen switches to the U-Utility mode.
(3) Touch the upper left and upper right corners of the operation panel in sequence.
➮
M-Utility is activated.
(4) Select “9. HV OFF.”
➮
The software switch is turned OFF, and “9. HV ON” is displayed on the screen.
(5) Power OFF the machine.
(6) Pull out the scanner unit.
“7. Pulling Out and Pushing In Scanner Unit”
(7) Place the high-voltage switch (S1) of the SCN08A board in the OFF position.