JVC GR-SXM250US, Service Manual

Page: 14 / 75

1-14 (No.86721)
2.5 ASSEMBLY AND DISASSEMBLY OF [2]OP BLOCK ASSEMBLY
CCD BOARD ASSEMBLY (CAMERA SECTION AND BOARD ASSEMBLY)
2.5.1 Precautions
(1) Take care in handling the CCD IMAGE SENSOR, OP LPF
and lens components when performing maintenance etc.,
especially with regard to surface contamination, attached
dust or scratching. If fingerprints are present on the surface
they should be wiped away using either a silicon paper,
clean chamois or the cleaning cloth.
(2) The CCD IMAGE SENSOR may have been shipped with a
protective sheet attached to the transmitting glass. When
replacing the CCD IMAGE SENSOR, do not peel off this
sheet from the new part until immediately before it is
mounted in the OP BLOCK ASSEMBLY.
(3) The orientation of the OP LPF is an important factor for
installation. If there is some marking on the OP LPF, be
sure to note it down before removing and to reassemble it
very carefully as it was referring to the marking.
2.5.2 Disassembly of CCD BOARD ASSEMBLY and CCD
BASE ASSEMBLY
(1) Unsolder the CCD BOARD ASSEMBLY by the 14 points
(SD2) and then remove it.
(2) Remove the two screws (1, 2) and remove the CCD BASE
ASSEMBLY.
(3) Remove the SPACER.
(4) Remove the SHEET.
(5) Remove the OP LPF.
2.5.3 Assembly of CCD BASE ASSEMBLY and CCD
BOARD ASSEMBLY
(1) Set the OP LPF to the OP BLOCK ASSEMBLY so that the
OP side touches the OP BLOCK ASSEMBLY.
NOTE 2a:
Pay careful attention to the orientation of the OP LPF.
(2) Set the SHEET to the OP LPF not to come off the right
position.
(3) Attach the SPACER to the OP BLOCK ASSEMBLY.
(4) Fasten them together with the two screws (1, 2).
(5) Set the CCD BOARD ASSEMBLY in the CCD BASE
ASSEMBLY, and then solder it by the 14 points (SD2).
2.5.4 Replacement of service repair parts
The service repair parts for the OP BLOCK ASSEMBLY are as
listed below.
Before replacement of these parts, remove the BRACKET (OP
BLOCK ASSEMBLY) as required.
Take special care not to disconnect any of the FPC wires or
cause any damage due to soldering (excessive heating).
(1) FOCUS MOTOR
(2) ZOOM MOTOR
(3) IRIS MOTOR UNIT
NOTE 2b:
When replacing the FOCUS MOTOR or the ZOOM MOTOR,
solder the FPC at a space of about 1 mm above the terminal
pin.
NOTE 2c:
The IRIS MOTOR UNIT includes the FPC ASSEMBLY and
two sensors.
Fig.2-5-1
2
(S2a)
1
(S2a)
(SD2)
OP
side
CCD
side
Blue
<NOTE 2a>
OP LPF
OP BLOCK
ZOOM MOTOR
<NOTE 2b>
SHEET
OP LPF
SPACER
CCD BASE ASSEMBLY
CCD BAORD
ASSEMBLY
SENSOR
IRIS MOTOR UNIT
<NOTE 2b, c>
FOCUS MOTOR
<NOTE 2b>
0.078N
.
m (0.8kgf
.
cm)
0.118N
.
m (1.2kgf
.
cm)
4
(S2b)
3
(S2b)
6
(S2b)
5
(S2b)
10
(S2b)
11
(S2b)
9
(S2b)
7
(S2c)
8
(S2c)