Sharp VE-CG30U Service Manual page 8

VE-CG30U
VE-CG40U
4-2. REPLACEMENT OF CCD SENSOR
4-2-1. BEFORE REPLACEMENT
1) The CCD image sensor is more sensitive to electrostatic breakage than C-MOS LSI.Therefore sufficient means
to prevent electrostatic damage must be taken when it is replaced.
• Ground the soldering iron.
• Ground also the human body, using the wrist strap(through an 1 M ohm resistor).
• Until the CCD sensor is mounted on the PWB, fit it to the conductive sponge, and short-circuit the foot lead.
2) Take utmost care so that the surface glass of CCD sensor and optical filter are not contaminated and damaged.
If any contamination is found, for example fingerprint, wipe it off with silicon paper or clean chamois skin.
3) When replacing the CCD sensor, use the static electricity prevention grounded soldering-iron, and perform
quickly soldering.
Index Mark
4-2-2. REMOVAL OF CCD
1) Unsolder the CCD sensor leads from the MAIN PWB.
2) Take out the MAIN PWB.
3) Remove the three screws (LX-HZ0013TAFF), and remove the sensor holder and CCD sensor.
4-2-3. MOUNTING OF CCD
1) Place the lens unit upright (since the CCD sensor mount ID faces upward, care must be taken so as not to
damage the front lens of unit), put the crystal filter first and then the dust protection rubber into the CCD holder
of lens unit.
Set the crystal unit with its thin side toward the lens unit.
2) Place the CCD sensor so that the its No. 1 pin is at the right lower (Positioning hole to be at right), and put the
CCD sensor into the CCD holder. For smooth and tight fitting, press the right lower part of back of CCD sensor,
and then press the left upper part.
Note: Pay attention to the direction of CCD sensor.
3) Place the sensor holder so that its two round markings be visible, and fix the sensor holder with the theree screws
(LX-HZ0013TAFF).
4) Mount the MAIN PWB so that the CCD sensor leads go thorough the PWB holes.
5) Solder the CCD sensor lead to the sensor PWB.
Note: Take care not to apply excessive heat.
*Refer to P.80
1 10
JAPAN
SHARP
RJ21P3
BA0PT
YYWWXX
20 11
CG30
Crystal
PFiLWA025WJZZ (CG40U)
PFiLWA026WJZZ (CG30U)
Index Mark
1
20
Rubber
CCD
8
10
JAPAN
SHARP
RJ21R3
BA0PT
YYWWXX
11
CG40
DUNTKB356QA00 (CG40U)
DUNTKB357QA00 (CG30U)