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Canon T90 Photos Examples

With the camera in operatable condition, unsolder the connections shown in figure 1 on page 17 and the self-timer LED unit. This frees the front tongue of the main flex. Remove R7 from the rear of the flex and install a variable resistor in its place. Resolder the main flex tongue and Close SW1 and measure VC. Install a variable resistor between the CCC terminal and ground (metal part of the eyepiece shutter) The resistance should be set to VC 150uA. Close SW1 and find the lighting threshold of...

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Before unsoldering at (A) and (B), remove the DX Flex and unsolder the FD flex from the back cover ground switch pin. (The pin serves as a positioning pin for the DX Flex. Then unsolder (A) and (B). (If forcefully removed the pattern on the underside of the DX flex may be damaged. 1. Because of the 2nd Curtain sync feature, the shutter should be charged when the mirror box is installed. 1) Apply about 3 volts to the winding motor to wind the mechanism (polarity is not important). 2) Apply about...

Canon Inc Japan

Electronic and written materials for the T90 have been integrated to make them even more valuable training aids. These instructions are designed to be used as a textbook with the video tape Adjustments are explained as the stripdown progresses, rather than in a separate section. 2. Units and assemblies have been favored over individual parts in establishing the spare parts list If unlisted individual parts are required, replace the unit or assembly. After a year of field experience, we will...

Adjustments Possible After Removing Front Cover

Shutter Speed And Aperture Chart

R10 Winding Inhibit Voltage Adj. (Necessary when IC4 changed) Adjust if IC4, the main flex, or shutter Use test equipment capable of measuring only accuractly measure 1 1000 sec.) 2.7 +0.2ms (EF-500 0. K. ) ( 1 0.5ram slits) 0.300ms Slow (+) 0.244ms +0 3EV 0.198ms Fast (-) A Line Over 0.2ms B Line Over 1 .6ms (See pg. 5 for details) Adjust VR8 so 1 4000 is as near 0.244ms as possible, and check the other speeds. See the Shutter Speed EV chart for tolerances. The 1st curtain worm gear adjustment...

T Service Parts Policy

THE POLICY OF CAMERA SERVICE, TOKYO, IS TO STOCK ALL PARTS NECESSARY TO EFFECT EFFICIENT ECONOMICAL SERVICE. IT IS NEITHER NECESSARY NOR TECHNICALLY FEASIBLE TO STOCK SEPARATELY EVERY PART THAT GOES INTO EACH PRODUCT. IN ESTABLISHING THE SPARE PART'S LIST, WE CONSIDER REPAIR DIFFICULTY, LABOR COST, SPECIAL TOOL REQUIREMENTS AND INDIVIDUAL PARTS Vs. ASSEMBLED UNIT COST TO DETERMINE IN WHICH FORM PARTS WILL BE STOCKED. PARTS LINE ITEMS Approx. 500 INCLUDING 3 G NEW PARTS

Adjustments Possible After Disassembling The Front Panel Unit

Of the front panel units the AE unit and mirror mechanism mirror 45 angle require adjustment. Lubricate lever friction surfaces with Lozoid 72090, but use a small enough amount to insure against splatter. Max. Aperture Pin Height Adj. Screw AVO Max. Aperture Pin Height Adj. Screw AVO AE Stop Gear AE Set Position AE Stop Claw AE Stop Gear AE Set Position AE Stop Claw Whe the AE unit is replaced, check AE eccentric gap, AE overcharge, and maximum aperture pin height. The other points are...

Alternate Adjustments

Canon T90 Camera

1 4000 sec Adjustment with Oscilloscope This adjustment uses the photosensor of the EF-500 connected to an oscilloscope to check the 1 4000 sec. shutter speed. Before this adjustment, adjust the curtain travel time with the EF-500. Pins 2 and 6 are the B Line connection Time baoe 100 ntt m Vertical 0 5VA Variable Resistor Adjust to SKn-SOKT Pins 2 and 6 are the B Line connection Time baoe 100 ntt m Vertical 0 5VA Variable Resistor Adjust to SKn-SOKT 1 . Connect the EF-500 photosensor to the...

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Assemble and disassemble in released condition Whe changing shutter blades apply a small amount of Astrooil to the pivot shafts. Hook on edge of blade Check before dlaasscnbly the aPrin8 1 not under' In the released con- Hook on edge of blade Check before dlaasscnbly the aPrin8 1 not under' In the released con- Identical washers S amp 12 are thicker than identical washers 4 amp 13 load whpn rh 9ptin ls not load when the shutter is released. load whpn rh 9ptin ls not load when the shutter is...

Individual Electrical Components Which May Require Replacement Are Stocked Others Are Listed On The Schematic With

THE SPARE PARTS LIST IS ADJUSTED PERIODICALLY TO INSURE THE NECESSARY PARTS ARE ALWAYS AVAILABLE, AND UNNECESSARY PARTS ARE REMOVED FRCM THE STOCK LIST. A COMPLETE REVIEW WILL BE 00 N DUC TED ONE YEAR AFTER MARKETING. 5. ASSEMBLIES SHOWN WITH THE J N.S. MARK ARE SHOWN FDR CLARITY ONLY. THEY ARE NOT STOCKED IN THE FORM SHOWN. external parts battery case crip back cover electronic input dial main flex9 lco rewind parts pentaprism unit mirror box i mirror box ii spool, sprocket orive unit i...

Adjustments Possible After Removing Top Cover

Film Leader Protrusion Pads Bridge these pads to leave leader protruding from the cartridge. Level A Level P Level S Gain Adj. R13 Viewfinder LCD Adj. check by lifting upper flex slightly 6. Film Leader Modification Service Action If a user prefers that the film leader not rewind completely into the cartridge, bridge the two pads. Perfo rra this alignment if the eyepiece shutter, IC1 , or the Tools EV Tester EF-500 , FD 50tdtd f 1 .4 lens, point light source plate black, at least 12 X 18cm,...