NIKON - Nikon MB23 service manual

Official Nikon service manual for the MB-23 battery grip, a high-speed power accessory engineered for Nikon F4 and F4s camera bodies. This technical documentation delivers complete functional specifications and detailed product architecture essential for professional maintenance and repair work. The manual covers power supply options using Ni-Cd MN-20 or AA alkaline LR6 batteries, body attachment mechanisms with tripod mounting capability, and the dual LED battery check indicators that provide real-time charge status. Electrical contact specifications address shutter release and film advance signal transmission, while shooting performance data quantifies rolls per battery charge across different temperature conditions. Practical guidance addresses vertical shutter release button operation, battery storage protocols optimized for low-temperature environments, and the guaranteed operating range of -10°C to +40°C. An extensive spare parts list indexed with Nikon reference numbers, supported by assembly diagrams and exploded views, allows technicians to identify components with precision and execute maintenance procedures with confidence. Revised June 1994. Designed for maintenance technicians, service centers, and authorized Nikon repair professionals.