Asahi Pentax K-2 Service Manual
Contents
1. Procedure a No clearance is allowed between release plate A503 and the lever of shutter mechanism E000 and also the lever should not be pushed by release plate b After shutter cocking adjust clearance to 0 3mm between Mirror Actuator lever hook plate assembly 0 B48 and its hitting part Adjusting screw 1 c Shutter stroke adjustment Depressing shutter button gradually shutter starts working at 2 3mm 0 2 deep from original position Adjusting screw 2 d Self timer stroke 0 1 mm deeper than shutter stroke Adjusting screw 3 8 Funchon check of SWp Fig 15 ON When release button is gradually depressed and before it reaches to keep position SWp should be on OFF When wind lever is set at closed position When release button is depressed with Lock 23602 6 9 Shutter speed adjustment Testers Light value correction unit TSST 3A T adjuster or battery ESST 1A digital counter diaphragm setting ring KA 00 1A 23600K A400 A x n DIGITAL GOUNTER ee _ LIGHT VALUE T TSST 3A CORRECTION UNIT Procedure a Auto speed adjustable resistor R7 1X ASATOO 2 8V b c d e EV12 1 60 sec EV16 1 1000 EV16 2X 1 500 EV8 1 4 EV4 1 Meter level R10 EVI6 1 1000sec Meter sensitivity R9 EVS 1 4 Manual shutter speed RI2 EVI2 1 60 check all shutter speeds to see Rotary SW co2. A54 Al5 0 AI52 3 4 CNI DI7X 2 OM mine B O Al40 _CNS 7x2 Sy AI43 4 pe pum CSS17X CSS 7X3 e 1 CSS2X3 s 0 A403 d KOO0 F Product No 23602 ASAHI PENTAX K2 EAPLODEB ILLUSTRATION 13 N T 300 6 1 7 0 1 CNL F 17 X 4 2 Bi O NO PE 014X22 am gt E CNML7X18 w w 1100 1 5 WD cs NM1 7X2 8 T CNSI7X28 CNL F 7 35 T400 8 CNM1 7X25 B74 B37 0 876 fodger No 23502 2X5 ASAHI PENTAX 2 Fig 2 EXPLODED ILLUSTRATION g CNI DI4X22 _ ee 7 amp F30 Ci22 X amp F27 x e i o lw 26 L i e 0 123 k ama P e By oo ma CIZA 2 5 W cino 3 x CNEBIAXI6 N y O CIOB La e 0 CII9 4 2020 5 co cd w bazo CNM 14X22 119 E wie 22 C36 ul Ses EXT ke za o 2 c 2X1 Am AX22 zt l s C35 p O FI 3537 CNM L7X 2 5 7 8 7 9 sc n gt 17 25 kaj aRau C200 lf 3 _ C205 E 3 QO F 32 w amp 2X CNL DI7X3 4 pe N SCNLDIAX22 C9 F 000 2 CII 0021 A ls ca Z O
3. assembly 0 A8 toward counter dial block Otherwise shutter mechanism will not work properly 23602 4 Blue needle adjustment a Set shutter dial to AUTO Install Idle gear holder assembly 0 A12 gearing 2 3 portion with the gear of gal vanometer q 1 Idle gear holder assembly 0 A 12 should never touch shaft recept cle assembly 0 D5 and the clearance is approximately 0 2 0 3mm lA BIC All Fig 13 b Pull meter coupling plate assembly 0 A8 toward shaft receptacle assembly 0 D5 Install rack A11 attaching its concave part to the rivet of meter coupling plate assembly 0 8 Three kinds of rack 11 of different widths are used for adjustment achieve smooth function of the blue needle c When shutter dial is turned from to AUTO or vice versa meter coupling plate attsembly 0 A8 must function must function smoothly even without meter coupling spring A15 After checking function meter coupling spring A 15 is installed d Blue needle is adjusted by moving rack A11 left or right so that blue needle matches with each step of shutter speed scale when shutter dial is turned e Apply red lacquer to screws and Plio Bond to meter coupling spring A155 after finishing adjustment I Stroke adjustment After putting on top cover A300 and wind ILever assembly 0 C132 set shutter dial to B Wind lever should be set at closed position 23602 5
4. FA C223 m e C 9 DI0 L CSMI7X35 C2 1 1 1 AK Sta 5 a a h 8 0 lt 20 af 3 i 4 VETT 7 w 0 5X3 W64 C309 12 LWI7 308 e C400 o wis 4 CNM17X55 ps d CNSL7X25 A CNM17X5 Product No 23602 Fia 3 ASAHI PENTAX C2 9 DISTRIBUTING WIRES TIOO MEMORY COMPUTING OF CONTROLLER CONTROLLER LIGHT MEASURE INDICATION Product No 23602 A Fig 4 ASAHI PENTAX lt 2 DISTRIBUTING WIRES TIOO MEMORY COMPUTING OF CONTROLLER CONTROLLER LIGHT MEASURE INDICATION Product No 23602 AZI ASAHI PENTAX K
5. PRODUCT No 23602 ASAHI PENTAX KZ SERVICE MANUAL B Disassembly There are some parts which have to be taken off with careful treatment 1 Top cover A300 removal Wind lever should be set at closed position before taking off top cover AT CLOSED POSITION AT PREADVANCE ANGLE Fig 1 Fig 2 2 Photo sensor circuit board assembly T300 removal K2 camera is controlled with very small electric current ex 200pA or 300pA therefore all electric parts should be treated carefully especially photo sensor circuit board it is so sensitive that it should not be touched with bare hands Polyester tape Fig 3 23602 3 P C board attern assembly T100 removal P C board pattern assembly T100 can be taken out with or without removing Front Board Pull it out hooking the large black I C with spring hanger Don t touch the other I C s or electric parts SPRING HANGER Fig 4 4 Front board removal Front board can be removed without taking off Self Timer lever or covering as shown in photograph Fig 5 5 Shutter mechanism E000 removal Shutter mechanism E000 is so delicate and sensitive that it should not be touched with bare hands except the parts as shown in the photograph It may cause malfunctions if handled roughly Use finger cover for removal SELF TIMER i M 73 SW o i FP SYNCH N Fig 6 RELEASE PLATE Fig 7 23602 2 Assembly and adjustments Some p
6. arts should be assembled and adjusted with careful treatment as shown in the following 1 Winding stopper assembly 0 C6 R f 2 Winding spring 0 23 Face the retainer screw of spring in the direction of Tripod socket and wind the spring a little and stretch it in the direction of tripod seat The proper tension is obtained when it is stretched around Tripod socket 3 Perforation Adjustment A LI Fig 9 There are several kinds of 2nd gear C205 which are selected to achieve the proper position of socket teeth After removing 2nd gear set sprocket C9 in the correct position using the tool 23600 C9 A li 23600N Al C9 A Fig 10 23602 kL ALIGNMENT mE I u Wind up top 2nd mech plate assembly C200 with driver and loosen wind shaft without moving main gear Then give back tension to sprocket gear C16 Choose the proper coupling 2nd gear C205 and install it in the above mentioned way 2nd GEAR cz200 5 MAIN GEAR Fig 11 4 Memory block assembly T400 After cocking mirror housing 02mm clearance is necessary between delrin and the longer contact piece of memoiy block T400 See Fig 12 A After releasing mirror housing and when mirror stays up also 02mm clearance is necessary between two contact pieces of memory block See Fig 12 B 5 Shutter dial seat assembly F000 Set shutter dial at B and pull meter coupling plate
7. ntact effects Battery Checker 2 1V OFF 2 4V ON No adjustment is allowed because no tester is supplied 23602 7 4 10 Galvanometer installation Tester Meter tester MA 00 01 Needle must be absolutely horizontal between 15 and 8 Check the movable range of the needle in the upper and lower part AUI Fig 18 11 Shutter release adjustment As shown in Fig 19 when mirror housing is released dimension between Shutter Actuator plate B61 and minor housing foot should be kept at 9 4 10mm The longer Shutter actuotor plate B61 will break Shutter mechanism E000 and the shorter one will never make it E000 function Mirror housing released Az No mark 23602 D Lubricants G2 Mainly used GI 0 B25 0 B48 0 B68 0 B22 L On rewind shaft D6 E Special tools 336000K C135 A 23600K A316 A 23600K A3A40 A 23600K A 19 A 23600K C C58 A 23600K 1340 A 2 3a 400K D4 A 23600K C 134 A1 236000K C1I34 A 23602 EXPLODED ILLUSTRATION A36 AJNI CNSI7X AB wg oa S A33 i CI33 CNSUX4N A3 e aii y im i F3 p er A313 lt u 313 amp You Eb a A330 N As 0 0 A322 Sh 0 A324 gt A325 o b 3 0 QD wap A343 CNL D17x25 _A506 Al0 Al6l 0 A8 CNEDIAK2 7
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