Sony SAL35F14G service manual Number of the smallest pitched lines

Page 59

Ver 1.1 2007.02

2. Checking Method

1)Turn the focus ring of the checking lens until the chart image projected on the screen is the sharpest at the center (y’=0).

2)Read the number of the smallest pitched lines at the center (y’= 0).

The number represents for lines per mm.

Saggital (S)

Meridional (M)

Fig.4-3-3

3)Turn the mount rotation ring of lens test projector until the projected image at a certain peripheral point (y’= 15) on the screen appears the most unsharp.

Read the number of the smallest pitched lines (both saggital and meridional: 3 lines) at the peripheral point.

Note: When reading the number of the smallest pitched lines, be careful of the spurious resolution.

Spurious resolution is the reversed image of 2 or 4 lines which appears on screen when focus is beyond maximum revolving power.

Do not confuse spurious resolution for the smallest pitched lines.

Correct resolution			Spurious resolution

Fig.4-3-4

4)Check that the all readings (y’= 0, saggital (S) and meridional (M) at y’= 15) is within the specification of the Table 4-3-2.

Specification

	Number of the smallest pitched lines

Distance (m)	Center (y’= 0)	Peripheral (y’= 15)
	(Lines per mm)	(Lines per mm)

		S	M

1.4	125 or greater	50 or greater	40 or greater

Table 4-3-2

5)After the checking is completed, turn the lamp switch of the lens test projector to OFF and cool the inside of the lens test projector, then turn the fan switch to OFF.

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

4-20

Image 59

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 HELP06HELP10 HELP08HELP09 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.110 Ref. No.60Ref. No.73 Checking supplied accessories Other accessories Supplied AccessoriesPreparations List of Service Tools and EquipmentsChart Mm collimator Equipment used Lens Adjustment Program ActuatorCheckerDownload of PC card setup file InstaCal.exe 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 Preparations Aperture Diameter CHECK/ADJUSTMENTAperture Diameter Check 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 Finding a text Switching aApplication of printing Reversing the screens displayed onceVer Contents Rev Issued