6
TECHNICAL GUIDE
Cal. YT57B
Place the movement directly on the riveting plate shown in the illustration with the oscillating weight
down, so that the oscillating weight screw is not damaged. Then, press in the hands.
12
Oscillating weight screw
Tighten the oscillating weight screw firmly,
applying more force than usual.
Oscillating weight screw
II.
REMARKS ON DISASSEMBLING AND REASSEMBLING
For disassembling and reassembling, be sure to use the universal movement holder.
1
Hands
18
Rechargeable battery unit
Though they have a close resemblance in shape, the rechargeable battery unit for Cal. YT57B is of a
completely different type from that for Cal. 5M6 Series. They can be discriminated in the point that the
latter has a hole for discrimination on its minus lead terminal while the former doesn’t as illustrated
below. When repairing the rechargeable battery unit, check that it has no hole for discrimination on the
minus lead terminal to make sure you are using the proper one.
Minus lead terminal
[ Rechargeable battery unit for Cal. YT57B ]
[ Rechargeable battery unit for Cal. 5M6 Series ]
Minus lead terminal
No hole for
discrimination
Hole for
discrimination
