Mamiya RZ67

For more information, see this article's corresponding Wikipedia page: Mamiya RZ67.

Mamiya RZ67

Preliminary Information
Release Year	1982
Leak Risk	High
Batteries	4LR44 or 28A (or lithium variants 4SR44 or 28L)
Mounting Technology	Through Hole, SMD
Capacitor Types	Aluminum Electrolytic
Destructive Entry	No

The Mamiya RZ67 is a medium format film SLR introduced by the Mamiya Camera Co. Ltd in 1982. It is the successor to the earlier, fully mechanical, Mamiya RB67. The RZ67 features an electronically controlled shutter which ranges from 8 seconds to 1/400th of a second, and a bulb setting. The RZ67 uses Mamiya-Sekor Z lenses electronically, or can use Z lenses at 1/400th of a second and earlier mechanical lenses with its mechanical backup mode.

Known Issues

Electronic Shutter Failure

Causes

• Failure of Mechanism
• Dirty Contacts between lens and body, film back and body, internal contacts, darkslide contacts
• Capacitor Leakage/Failure

Solutions

• Move shutter button to mechanical backup mode, ensure mechanical operation. If failed, lubricate/replace failed mechanical parts
• Clean Contacts, check darkslide is removed or R-M switch is in the M mode
• Replace 2 main capacitors on the mainboard

Disassembly Notes

Camera contains small screws and sensitive parts. Gloves are recommended to keep fingerprints off of reflex mirror and focusing screen. Avoid touching the mirror and focusing screen surfaces. Remove batteries, lens, film back, and viewfinder while performing repairs. Exercise care when handling flexible circuit boards.

[Factory Repair Manual]

RZ67 Wiring Diagram, Colored

Original Parts

Mainboard

Capacitor Specifications and Footprint Information

Qty	Capacitance	Voltage	Mount	Diameter/Size	Height	Lead Spacing	Temp	Type
2	470 µF	6.3V	Radial Through Hole	0.315" (8.00mm)	0.413" (10.50mm)	0.138" (3.50mm)	105 °C	Aluminum Electrolytic

Replacement Parts

Mainboard

Capacitors

Qty	Compatible Part Number	Order Links
2	6.3WXA470MEFC8X9	Digikey

If parts are not available or different selection is preferred, you can use the values in the Original Parts section to perform a parametric search.