Nikon D50 Repair Manual page 76

Accuracy inspection and adjustment (Camera body)
To connect to PC, as shown below, connect USB cable UC-E4 to the USB terminals of PC and camera.
・
USB cable UC-E4
To USB terminal
J18385
D50 inspection and adjustment
software
Flash meter
Not prepared as RJ
Stabilized power supply
Set value ＝ 7.8V 0.3Ω 5.0A
or AC adapter EH-5
＊ Note:
When checking "battery check",
be sure to use the battery tool
(J15418).
AF50/1.4D
- Ａ41 ･ -
VBA12001-R.3668.A
AECCD
alignment tool
(J15417)
Battery tool
J15418
Shutter tester (EF-8000, etc)