Mamiya M645 Pro TL Specifications Page 1

• ami SERVICE INSTRUCTIONS for Mamiya M645 M6451000S G~neral Speci fi cations ...•... 1 Page T ro ub 1 e S hoo t i n g • . . . . •

'\l'rouble Shooting Heavy and creak Winding ' SLS146ll Winding cam strikes SLS14501 winding base plate Lack of oil for spool gear in

Trouble Shootins No.6 Battery Battery exhaustion (See 8-4) Touch of main switch SWl contacts ? Operation of Hoving Coil ? Short of leadwire for HC. ?

Repair., Manual for Mamiya M645 Camera Body -13-

CONTENTS . . Page 1. Disassembly and reassembly of left and right side 20 panel, front cover, bottom plate and F.body, M.body 1-1 Removing and attach

2. Shutter mechanism and Mirror bousins mechanism 2-1 Cocking shutter 2- 2 Charge of mirror drive spring 2-3 When pushing down shutter release botton

4. lst curtain\ brake, position of MS.cllitch and ti1Ding When the MS.clutch is detached 4-1 42Installing X.sI!!chro gear and lst curtain brake A In

6. Body flange back' and Finder infinity 6-1 Body flange back and flat of bayonet face A Check B Adjustment 6-2 Mirror angle 45° degress A Chec

8-1 8- 2 8-3 8-4 8. Moving Coil mode, Electronic circuit and parts Electronic circuit A Tho exposure time control capacitor Cl discharges B lleginni

1. Disassembly and reassembly of left and right side panel, front cover, bottom plate and F.body, H.body 1-1 Removing and attaching the film advance

c. Removing the knob 1 Rotate the film advance knob until it stops. 2 Whil e holding the release lever @of the knob in the UP posi-tion \lith a smal

General Specifications for Mamiya M645 -1-

1-2 Disassembly and reassembly of • SLS16101 Left side pan1ü A. Disassembly The arabic mumeral in a circle as shown in Fig. 5 indicates the procedure

1-4 Disassembly and reassembly of SLT2131Tl Front cover A. Disassembly The arabic numeral in a circle as shown in Fig. 8 indicates the procedure of di

1-5 Disassembly and reassemblz of SLT1640l Bottom plate A. Removal After removing SLT292ll Leatherette, take off two PD2x5BNi and two 3PBl.7x3BNi s

1-6 Disassembly and reassembly Df F.body and M.body A. Disassembly of SLS13101 Winding base unit, F.body and M.body. The arabic numeral in a cir

B. Reassembly ' Reassembly is normally the reverse of disaasembly. 1) Install the @ SLS13101 Winding base unit : a. Release the shutter b. W

2. Shutter mechanism and Mirror housing mechanism 2-1 Cocking shutter 1) ,.J:Ltien winding the film advance crank or knob, \.!)M~ear No.l turns clock

2-2 Charge of mirror drive spring l) )llien(I)Ms.gear No.l turn~g, simultaneously~Ml.gear and ~M2.gear turn and thenQg>Ml.gear is turned. The Qgl M

2-4 Winding mechanism A. Stop mechanism 1) Insert a roll of fila in the roll-film insert and place it into camera body. 2) Align the multipule-expo

D. Lock of shutter release Get~ng out of the SLS14131 A rotation stop dise, the B stopper go~p. Cont nuously~e C shutter release stop lever moves in

C. Replacement of mirror 1) Removal Remove SLS24151 Retaining spring by taking off two PB1.4xl.8BN1 screws as refering to the parts catalog page 4. Th

General Specificat ion for Mami ya M645 Camera body Camera Type 6 x 4.5cm electronic focal-plane shutter SLR. Film Type 120 roll-film for 15 exposu

3. Disassembly and Reassembly of shutter curtain 3-1 Disassembly The arabic numeral in a cir cle as shown in Fig. 18 indicates the procedure of dis

3-2 Assembly of s hutter curtain unit A. Installing the shutter curtain unit into the M.body 1) Put the curtain unit in order as shown i n Fig. 19.

8) Tighten a SLS18172 Set screw to one of the ribbon pipes as shown in Fig. 21. Note : The set screw must be tightened into groove of the shaft as

C. Determining 2nd curtain 1) Attach SLS18371 Gear to end of lst curtain shaft in right side. 2) Aft er appling plyo-bond into tapp-ing hole of t he

D. Adjusting parallel of 2nd curtain 1) Parallel with 2nd curtain wound. a. Cut some black color Binyl-tape in same width with curtain ribhon. b. Rot

F. Determining SLS1721Tl MS.gear N0.2 1) 2) 3) Release shutter Rotate the SLS1735Tl GeAr No.2 as cent~of [email protected] on the line\!)as shown in Fi

H. Installation of S.charge gear•N0.3 1) Attach the SLS18371 Gear to the lst curtain shaft by facing the Protrusion side of i t downward. 2) Apply P

11) Recheck Wind the shutter slowly a.nd check as follows. a. b. c. First the lst curtain satrt lat ch should be set with sound "click". Nex

I. Determining lst curtain : Cock the shutter and then release only the SLS2551Tl Mirror release lever. Consequently, let and 2nd curtain metals shou

L. Replacement of only 2nd cûrtain The 2nd curtain unit can be changed without disassembling M.body, F.body and SLT17101 Charging base. If the 2nd c

Focusing 5creen Mirror The standard focusing screen, which is interchangeable, has three focusing aids, a central split-image rengefin-der spot (wedge

4. lat curtain brake, position of MS.clutch and timing when the HS.clutch ia detached. 4-1 Installing X.synchro. gear and let curtain brake A. Install

4-3 Timing when the SLS14201 MS.clutch is detached A. Adjustment : 1) Attach SLS-18 Winding tool and wind alowly. 2) As it has been explained at Fig

4-4 Check and adjustment of lst curtain bounce A. Adjusting curtain travel time Standard travel time : 12ms to 12.Sms 1) Put the one 6V silver-oxide

3) Check lst curtain does not stay in the film format. a. Release the shutter speed at l/lOOO(SLSl/500) and B alter-nately. b. The lst curtain metal

5-1 5. Adjustment of shutcer speed All shutter speeds for this camera are determined by performing the quickest shutter speed 1/1000 ( or 1/500 for SL

\ 3) Adjustment by changing overlap of lst curtain a. If it is impossible to adjust by step 1) and 2), change the overlap of lst curtain metal to the

2) Adjustment a . Adjustment i s made by turning the SLS17532 Ecc.collar as shown in Fig. 54. Turn Ecc. collar Shutter speed ,. Counterclockwise Fa

5-3 Flash synchronization After performing the shutter curtain bounce and shutter speed adjustment, X and FP delay time should be adju-sted. A. X. co

B. PP-contact 1) Operation With the shutter released, the pin~ is pushed up lower contact by turning the gear~clockwise. Then the switch is on. 2) C

5-4 Bulb mechanism A. Operation 1) With the shutter dial set to "B" , circuit is changed to SW3 in the Main switch SWl by shifting the SLS20

Trouble Shooting for Mamiya M645 -5-

5-5 Delayed Shutter Release Please refer to page 52-53 of M645 10005 Instructions about use of it. A. Replacement of Delayed shutter release 1) The ar

5-6 Release stroke the shutter release button A. Release stroke 1) While the release button~is pushed f rom 2mm to 3mm, the shutter should be released

6. Body flange back a~d Pinder i nfinity SI.~-) 6- 1 Body flange back and flat of Bayonet face A. Check 1) Put the SLS-1 Block gauge and SLS-3 Par

B. Adjustment Lena Plane• back ---~ 63.0aa " . ' lnner fllm ~uide r• i l 1'1111 aurflce Bayontt turract to Jnner fll11 guide rail 62.

6-2 Mirror angle 45° degreee A. Check l ) With the camera on the SLS-5 KiTror 45° stand inetalled, check the angle with auto-collimeter. Note : Bef

6-3 Adjusting infinity (X)) of Finder focus After performing the body f lange back and mirror angle 45° adjus tment, infinity ahoul d be adjusted.

7. Film transport méchanism Friction wheel ----::;;:;:.;;~ Film take up spool Film S F.gear No.4 LS14811...----J SLS1474Tl SLS14841-~ Fig.72 SLS1474Tl

7-1 film transport l) With the film advance cranlt or knob wound, F.gear No. l, No. 2 and No. 3 rotate. 2) SLS14841 Ratchet gear wbicb is linked

7-2 From start mark to the first exposure 1) When(t;)_Film counter rotates , operation of S~584~top lever is controlled by protrusion~of SLS15521 Fil

7-4 After 15 exposures for 120,. 30 exposures for 220 1) With 120 Roll-film insert : When winding the film advance lever more after the fixed numbe

c A '• l 2 3 1 4 2 5 3 6 7 3 8 { J..,I 2 l ' \ B Trouble Shooting No. 1 Shutter speed Inaccurate Shutter speed at l/lOOOms (SLS l/SOOms) Di

7-5 Reeet to starting position "S!' 1) When opening t he back caver, both ends of the SLS15842 Stop lever are detached from the SLS1541Tl Di

7-6 Multiple-Exposure mechanism When eet ting the multiple-expoeure lever to Mult i , the double-expoeure prevention mechauism is disengaged, 80 that

7-7 Determine SLS1554Tl Film counter gear A. Determine SLS156ll Stopper : 1) Install the SLS-17 Position gauge to the SLS15561 Shaft as shown in Fi

7-8 Position of SLS15842 Stop ',lever As we already have informed you with technical bulletin 078-M645-03, t he stop lever is modi-fied. First

3) Position of the ecc.collar a. Check 1. Install the 120 type roll-film insert into the camera body and check that the film can be completely wound

7-9 Check and adjusanent of the first exposure frame position on film +12 Draw t hree lines at a distance of 218t1111 _7 from the start mark in the

8. Moving Coil mode, Electronic circuit and parts 8-1 Electronic circuit A. The exposure time control capacitor Cl discharges 1) With the film advanc

Pink (SLS 1'1461) ~ r 1 ~Bt<Mn (SLS20771) .C-lamp SW3 Blue ISLSl6861) BatteTy chambeT Red (SLS 16831) Fig. 88-1 -69-

Time control printed board Electric Circuit Diagram (For M645 10005) '--"~_.c,..:;...~~r-~~~~~~~~~~~~"'T':'------~.,--~-

5LT206451 Print ed ci rcui~ board . for M645 10005 G.diode Red~i;~~r.;';';~;t~]Red Red C2 Capacitor Fig. 88-4 515206451 Printed circuit bo

Trouble Shooting Malfunction of Bulb ~ (See 5-4) SLS2045Tl Bulb switch lever Contact ef f ici ency of Bruah SW 3. Bulb Switch lst curtain bounce ~ (S

8-2 Check and replacement of the Moving coil (M. C) Before replacement the M.C, check the following points without fail. A. Check 1) Battery voltage

b. Electric current : Remove the battery from the body. Then release the only lst curtain by pressing the shutaer release button. In above condition,

B. Replacement of the moving coil' 1) Remove the M.C from the body a. Remove SLS11551 and SLT17931 Screws as shown in the Fig. 91-1. b. Remove t

8-3 Replacement SLT2064Sl Printed circuit • This printed circuit maybe very seldom to r eplace for its malfunction or damage, If it is necessary

8-4 Check clectronic circuit by Tester A. Circuit Check Its purpose Battery S.P Tester Tester termina l Tester place Dial Range Red Black indicator

1) 2) 3) 4) B. Parts 1/2 Partfl Tester Tester terminal Tester indicator & others Range Red Black Pin 5 of ' White lead Moves widely Germa XlO

Parts ( l C) 2/2 I C Battery S.P Tester Tester terminal Di al Range Red Black With 1/1000 D C Pin 1 Pin 4 Pin (SLS 10 V 1 1/500) With-1/ X 1 sw 2 Pin

C. Main cause for Battery exhaustion ~ Battery Tester Tester terminal Tester indicator Range Red Black 'When releasing at Touch of main switch D

Special T ool List and Special Measuring Instruments for Mamiya M645 - 81 -

Special Tool List and Special Measuring Instrument Instrument No. SLS-1 SLS-2 SLS-3 Description and Use Standard gauge bar. Adjusting Body flange ba

Trouble Shooting Overlap betveen exposure frames Lack of last exposure frame 1 I Check of first exposure frame (See 7-9) Engagement of SLS1554Tl Fi

U-3 U-11 SLS-5 Finder infinity check collimator ( Horizontal type ) Magnifier Collh1ator Horlzontd type Mirror 45° checki ng stand -84-

SLS-17 SLS-17 Position gauge for determining SLS15611 Stopper SLS-18 Winding crank lever Temporarily use for repair work SLS-19 DU!lllly Battery for c

Can not Wind Shutter Run 2nd curtain ? See 3-2.E) SLS15842 Stop pawl geta out of Dividing device ? (See 7-8) Slip of Winding ~ SLS14251 MS.clutch apri