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PARTS CATALOGUE / TECHNICAL GUIDE
[SPECIFICATIONS]
Item
Movement
Movement
Outside diameter
size
Casing diameter
Height
Time indication
Driving system
Additional mechanism
Loss/gain
Regulation system
Measuring gate by quartz tester
Power
Power generator
supply
KINETIC E.S.U.
Operating voltage range
Duration of charge
Jewels
Cal. 3M62A
Cal. No.
ø24.0 mm
ø23.3 mm
4.2 mm
3 hands
Step motor (Load compensated driving pulse type)
• Automatic generating system
• Power reserve indicator
• Energy depletion forewarning function
• Overcharge prevention function
• Electronic circuit reset switch
• Train wheel setting device
• Date calendar
• Instant setting device for date calendar
Monthly rate at normal temperature range: less than 15 seconds
Nil
Use 10-second gate.
Automatic generating system
Titanium lithium ion rechargeable battery
0.45 V ~ 2.2 V
From full charge to stoppage: Approx. 2 months
7 jewels
3M62A
(x 1.0)
1
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Summary of Contents for Seiko 3M62A
- Page 1 PARTS CATALOGUE / TECHNICAL GUIDE Cal. 3M62A [SPECIFICATIONS] Cal. No. 3M62A Item Movement (x 1.0) Movement Outside diameter ø24.0 mm size Casing diameter ø23.3 mm Height 4.2 mm Time indication 3 hands Driving system Step motor (Load compensated driving pulse type) Additional mechanism •...
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Page 2: Parts Catalogue
Disassembling procedures Figs. : → Reassembling procedures Figs. : Lubricating: Types of oil Oil quantity Moebius A Normal quantity Moebius F SEIKO Watch Oil S-6 Hour, minute and second hands Dial 0491 735 Dial washer 0012 766 Date dial guard screw 0808 550... - Page 3 PARTS CATALOGUE Cal. 3M62A 0022 490 Oscillating weight screw 0500 550 Oscillating weight 1002 550 Oscillating weight wheel 0012 354 Rechargeable battery clamp screw 4225 501 Rechargeable battery clamp 4216 555 Insulator A for rechargeable battery 0012 354 Circuit block cover B screw...
- Page 4 PARTS CATALOGUE Cal. 3M62A 0012 354 Plus lead terminal screw 4242 550 Plus lead terminal 0125 550 Train wheel bridge 0241 897 Fourth wheel and pinion 0701 550 Fifth wheel and pinion 0231 880 Third wheel and pinion 0261 880...
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Page 5: Technical Guide
Black White The type of date dial is determined based on the design of cases. Check the case number and refer to “SEIKO Casing Parts Catalogue” to choose a corresponding date dial. Winding stem 0351 550 The type of winding stem is determined based on the design of cases. - Page 6 TECHNICAL GUIDE Cal. 3M62A REMARKS ON DISASSEMBLING AND REASSEMBLING For disassembling and reassembling, be sure to use the universal movement holder. Hands 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.
- Page 7 TECHNICAL GUIDE Cal. 3M62A • How to install Set the guide hole of the minus lead terminal to the post of the main plate, and push the “A” p o r t i o n d o w n v e r t i c a l l y s o t h a t t h e rechargeable battery unit is well seated in position.
- Page 8 TECHNICAL GUIDE Cal. 3M62A 25 Intermediate wheel for generating rotor 26 Generating rotor · Before tightening the oscillating weight bridge screw, check that the upper pivot of the generating rotor is inserted properly into the pivot jewel. · Lubricate the generating rotor and intermediate wheel for generating rotor as shown in the illustration at right.
- Page 9 Refer to the illustration at right. Train wheel setting lever Setting lever III. VALUE CHECKING AND ADJUSTMENT Coil block resistance 2.4 KΩ ~ 3.2 KΩ Generating coil block resistance 330 Ω ~ 430 Ω Lubricating: : Moebius A : SEIKO Watch Oil S-6...
- Page 10 TECHNICAL GUIDE Cal. 3M62A Current consumption Less than 0.60 µA (with 1.55 V supplied from a battery) For the whole movement : Less than 0.20 µA (with 1.55 V supplied from a battery) For the circuit block alone : How to measure the current consumption for the whole movement Screw “B”...
- Page 11 TECHNICAL GUIDE Cal. 3M62A Notes: * Light may increase the current consumption, resulting in an inaccurate measurement. If the current consumption exceeds the standard value, protect the movement from light with a black cloth or the like, and make a measurement again.
- Page 12 Power reserve indication and duration of charge until the watch stops operating · Cal. 3M62A is equipped with a power reserve indicator. The current power reserve can be checked using the second hand at the press of the power reserve indicator button.
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