26 Trouble ShootingVarious safety interlocking device are incor-porated in the Mamiya RB67 Pro-SD to elimi- 4. After the shutter was released during ordi-nary exposure (not during multiple expo-nate careless operational mistakes. When the sures), did you advance the film?shutter is not released, or when the lens or the 5. Was the dark slide pulled out?roll film holder cannot be removed, do not Pull out the dark slide.hastily conclude that this indicates a cameramalfunction. Check the following conditions: 6. Is the revolving adapter turned to the clickstop postion?the numbers in parentheses indicate the pagenumber in the Instruction Manual that coverrelevant malfucntions.Turn the adapter until it stops with a click.(p. 20)7. Has the slide lock on the revolving adapterstopped halfway?Move the slide lock until it stops. (p.4)Shutter release button cannot be depressed1. Is the shutter release button locked?Turn the shutter release lock ring coun-terclockwise and align it with the white dot.(p.13)2. Is the mirror set?Set the mirror by pressing the shutter cock-ing lever down.3. Is the roll film holder loaded with film andhas the film and has the film been advanced tothe first exposure?Lens cannot be removedTo remove, press the shutter cocking leverdown. Set the mirror and the shutter. (p.10)When mounting the film holder, won’tthe slide lock move?While pressing the side lock release lever,move the slide lock to the left. (p. 14)Can’t the roll film holder be removed?After inserting the dark slide, the slide lockshould operate.40