Brand: Zenza Bronica
Category: Camera
Document Type:
Language: EN
Manual for ETRSi
Uploaded: Aug. 9, 2025, 11:44 p.m.
Manual Publish Date: 1990-03-01
The ETRSi camera is a medium format camera with interchangeable lenses and film backs. Key operations include loading film, setting shutter speed and aperture, focusing, and advancing the film. The camera features a waist-level viewfinder and a prism viewfinder option. Specific operations covered in the manual include:
- Cover removal and reassembly for various parts like the right cover, winding unit, and frame.
- Adjustment of internal mechanisms such as the mirror, light tight frame, and set lever.
- Troubleshooting common issues like abnormal shutter speeds, focusing problems, and AE coupling issues.
- Detailed diagrams and part numbers for exploded views of the camera body.
- Specific procedures for removing and installing components like the shutter release button and AE connector.
Troubleshooting and error codes
| Issue | Possible Cause | Troubleshooting Steps |
|---|---|---|
| Shutter Speeds Not Normal | Battery (6V) installed with a 75mm f/2.8 lens. Shutter speed fixed at 1/500 sec. | Check AE change switch contact. If not OK, adjust contacts. If AE switching pin is pressed and contacts separate, release and contacts touch. If lens connector wires (orange, black, blue) are improperly soldered or battery box wire is pinched, replace S. circuit board and adjust sensor. If shutter stays open, check yellow wire of lens connector for shorting to body. If OK, replace S. circuit board and adjust sensor. |
| Electronically-controlled speeds not accurate | - | A shutter tester is required. Adjust at 1/2 sec. and check at 1/250 sec. If no shutter tester, adjust at a slow shutter speed of 1 sec. to 2 sec. |
| Improper AE coupling (Display does not light) | D and S switches not turned on. | Check for poor contact or dirty contacts. If possible open, check wires from power supply to switch and AE connector. Dirty AE connector contacts are also a possibility. |
| Improper AE coupling (Display does not change for underexposure) | M switch not turning on. | Check for poor contact. If M switch does not turn off when mirror raises, check for poor contact. Possible open. Turn switch on/off using M switch timing gauge. |
| Focus related | Inaccurate focusing (1) | Defective focusing screen mount. |
| Focus related | Inaccurate focusing (2) | Play in the lens mount, Loose lens fit, Worn lens mount, No spring in the lens mount. |