Sony SAL35F14G service manual Frange Back f’F Check, Optical Axis Adjustment

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2. Frange Back (f’F) Check

1)Attach the checking lens to the flange back tester, and set the 1000 mm collimator.

Checking lens

1000 mm collimator

Fig.4-4-3

2)Set the focus ring of the checking lens to infinity end position while looking through the microscope, and align the optical axis to the center of the chart image accurately.

3)Turn the focusing knob of the tester until the chart image is the sharpest (red and green color areas are equal on the chart *). *: Position in which the color of collimator chart changes from green into red and come into focus.

Also check the optical axis aligns with the chart center. (Refer to Fig.4-4-4.)

Note: Figure shows example. The cause depends on individual lens.

	Optical Alignment	Incorrect aligned
		e.g. As the focusing knob is turned, the chart may appear blurry as illustrated.
	Best alignment
		The cause depends on individual lens.

Fig.4-4-4

Optical Axis Adjustment

1)Turn the G10, or do the adjustment of looseness. After align the axis.

2)Apply the adhesive bond (B-10) to the G10 retainer. Note: Tolerance: 0.02 mm or less

3. Checking Method

1)Calculate the flange back (f’F) of the checking lens using the following formula, and check that the specification of the Table 4-4-1 is satisfied.

Flange back (f’F) of the checking lens = (SR flange back gauge) + (Number of short-pointer revolution) + (Reading of long-pointer)

Specification

Focal-length	f’F (mm)
f (mm)	(Infinity position)

35	44.58 to 44.60

Table 4-4-1

2)When the flange back (f’F) of the checking lens is out of specification of the Table 4-4-1, perform “4-4-2. Flange Back (f’F) Adjustment”.

SAL35F14G (1.4/35G) (35mm F1.4G)

4-22

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Contents Service Note Repair Parts List Specifications DisassemblySpecifications Table of Contents Service Note Safety CHECK-OUT Aperture Trouble TroubleshootingFocus trouble Function NG Position NG Focus TroubleDisassembly Exploded View Ornamental Ring Block Outer Tube and Joint Tube Fixed Tube Block and Distance Control Tube Ornamental Ring Block and Focus Hold Button Base GROUP, 2 Group and 3 Group Lens Block HELP01 HelpHELP02 HELP03 HELP05 HELP04HELP07 HELP06HELP09 HELP08HELP10 HELP11 HELP12 HELP13 G7 G8 G9 G10 HELP14HELP15 HELP16 HELP17 HELP18 HELP19 HELP21 HELP20HELP23 HELP22Exploded Views Repair Parts ListLens Mount Riveting Block and Light Inter Ception Tube Outer Tube and Joint Tube 161 163 162 164 165 151 152 154 155 153 156 157 158 159 160 161202 203 209 208 204 205 212 213 211 253 255 Ref. No.73 Ref. No.60Ref. No.110 Checking supplied accessories Other accessories Supplied AccessoriesPreparations List of Service Tools and EquipmentsChart Mm collimator Download of PC card setup file InstaCal.exe Lens Adjustment Program ActuatorCheckerEquipment used SAL35F14G 1.4/35G 35mm F1.4G Setup of PC Card SAL35F14G 1.4/35G 35mm F1.4G SAL35F14G 1.4/35G 35mm F1.4G Confirmation of PC card setting Startup of Lens Adjustment Program ActuatorChecker.exe Finished Inspection JIG Lens EquipmentInitial Setting of ActuatorChecker Model Aperture Diameter Check Aperture Diameter CHECK/ADJUSTMENTPreparations Checking of Image Checking Method SpecificationAperture Diameter Adjustment Adjusting Method Projective Resolving Power Check Plane mirror Number of the smallest pitched lines Flange Back f’F Check Flange Back f’F CHECK/ADJUSTMENTFrange Back f’F Check Optical Axis AdjustmentOver Infinity Infinity End Flange Back f’F Adjustment Focus-shift mm = 0 to +0.15 Perform the 4-9. Write dSB Click ROM Data Lens ROM CheckCase of error display in the ROM Data Focus Brush Position Check Search Focus Adjustment Point Focus Brush Position CHECK/ADJUSTMENTCase of error display in the Search Focus Adjustment Point Click the Focus Adjustment Point Focus Brush Position Check Focus Adjustment PointCase of error display in the Focus Adjustment Point Click the Focus Pattern Focus Brush Pattern CheckFocus Brush PatternCase of error display in the Focus Pattern near position Case of error display in the Focus Pattern infinity position Click the Focus Hold Button Focus Hold Button Check Focus Hold ButtonCase of error display in the Focus Hold Button Write dSB Case of error in the Write dSB Application of printing Switching aReversing the screens displayed once Finding a textVer Contents Rev Issued