Sony SAL55200 Service Manual ▷ View online
4-15
SAL55200-2 (DT 4-5.6/55-200 SAM) (DT 55-200mm F4-5.6 SAM)
4-7.
FOCUS BRUSH POSITION CHECK/ADJUSTMENT
Equipment (Only the specific equipment is listed)
• Adhesive bond (B-10)
4-7-1. Focus Brush Position Check
Use the Finished Inspection JIG II and confirm with “Search Focus-Adj” in the Lens Adjustment Program.
4-7-2. Focus Brush Position Adjustment
1. Preparation
1)
Set the lens to be checked to the condition as shown in Fig.4-7-1 by disassembling or assembling.
Fig.4-7-1
2)
Connect the F.ECD board to the main PCB assy as shown in figure.
Fig.4-7-2
Semi Barrel Assy
Main PCB Assy
Focus Brush
F. ECD Flexible
Board
Board
4-16
SAL55200-2 (DT 4-5.6/55-200 SAM) (DT 55-200mm F4-5.6 SAM)
2. Adjusting Method
Check the conduction/non-conduction between patterns of main PCB assy.
1)
Set the focus to the infinity end.
2)
Adjust the position of the focus brush by measuring with a tester so that the conduction between the indicated patterns in Fig.4-7-4
2 and 3 become “non-conductive”.
2 and 3 become “non-conductive”.
Fig.4-7-3
Fig.4-7-4
3)
Hold the focus at the infinity end and by measuring with a tester check that the conduction between check points is in the following
state.
Step (No.)
Check Point
Check Item (Conductive/Non-conductive)
1
7
and
6
Conductive
2
7
and
5
Conductive
3
7
and
4
Non-conductive
4
7
and
3
Conductive
5
7
and
2
Non-conductive
6
7
and
1
Non-conductive
Table 4-7-1
Focus Brush
Apply the adhesive bond (B-10)
3 4
6
1
7
2
5
4-17
SAL55200-2 (DT 4-5.6/55-200 SAM) (DT 55-200mm F4-5.6 SAM)
4)
Hold the focus at the near end and by measuring with a tester check that the conduction between check points is in the following
state.
Step (No.)
Check Point
Check Item (Conductive/Non-conductive)
1
7
and
6
Non-conductive
2
7
and
5
Non-conductive
3
7
and
4
Conductive
4
7
and
3
Conductive
5
7
and
2
Non-conductive
6
7
and
1
Conductive
Table 4-7-2
5)
If the adjustment is NG in steps 3) and 4), adjust by moving right and left the position of the focus brush and perform the adjustment
again starting with step 1).
6)
After finishing the adjustment, apply the adhesive bond (B-10) to the head of screw.
4-1-2. Adjustment Flow Chart
4-18
SAL55200-2 (DT 4-5.6/55-200 SAM) (DT 55-200mm F4-5.6 SAM)
4-8.
ZOOM BRUSH POSITION CHECK/ADJUSTMENT
Equipment (Only the specific equipment is listed)
• Adhesive bond (B-10)
4-8-1. Zoom Brush Position Check
Use the Finished Inspection JIG II and confirm with “Search Zoom-Adj” in the Lens Adjustment Program.
4-8-2. Zoom Brush Position Adjustment
1. Preparations
1)
Set the lens to be checked to the condition as shown in Fig. 4-8-1 by disassembling or assembling.
2)
Set the zoom to the TELE end.
Fig.4-8-1
2. Adjusting method
1)
Loosen the screw securing the brush.
2)
Adjust the zoom brush as shown in the figure and secure with the screw.
Note:
Adjust to match the conducting points B on zoom brush to the cutting luck A of pattern on Z.ECD board.
3)
Check the conduction between third pattern and fourth pattern from top with a digital multimeter as shown in figure.
• In case of the brush comes to the area circled where no pattern exists, no conduction occurs. (Adjusted)
• In case of the brush comes to the area circled where the pattern exists, the conduction occurs. (Not adjusted)
Fig.4-8-2
4)
Confirm the brush position by turning the zoom WIDE to TELE again.
5)
After adjustment, apply the adhesive bond (B-10).
B
A
Match the position A to the position B
Apply the adhesive
bond (B-10)
bond (B-10)
Zoom Brush
Confirm the
conduction
conduction
Screw
Zoom Brush
4-1-2. Adjustment Flow Chart
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