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PARTS CATALOGUE/TECHNICAL GUIDE
[SPECIFICATIONS]
Cal.No.
Movement
Movement size
(mm)
Time indication
Driving system
Additional mechanism
Loss/gain
Regulation system
Measuring gate by quartz tester
Battery
Jewels
Cal. 7C17B
Outside diameter
Casing diameter
Height
Monthly rate at normal temperature range : less than 15 seconds
Battery type
SEIKO SR43SW,Maxell SR43SW, U.C.C. 301, SONY EVEREADY 301
Pressure
Battery life
7C17B
φ28.6 mm×27.0 mm between 3 o'clock and 9 o'clock sides
φ27.0 mm×25.4 mm between 3 o'clock and 9 o'clock sides
5.2 mm
2 hands
Step motor (Load compensated driving pulse type)
Electronic circuit reset switch
Pattern cutting system
Use 10-second gate.
approximately 5 years
7 jewels
1/6
1.55V
(× 1.0)
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Summary of Contents for Seiko 7C17B
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Page 1: Specifications
Monthly rate at normal temperature range : less than 15 seconds Regulation system Pattern cutting system Measuring gate by quartz tester Use 10-second gate. Battery type SEIKO SR43SW,Maxell SR43SW, U.C.C. 301, SONY EVEREADY 301 Battery Pressure 1.55V Battery life approximately 5 years... -
Page 2: Parts Catalogue
→ → Reassembling procedures Figs. Lubricating: Types of Oil Oil quantity Moebius A Normal Quantity SEIKO Watch Oil S-6 10 Hour and minute hands 1 Case back 11 Dial 2 Case back gasket 4 Casing clamp screw (2 pcs.) 0022 421 5 Casing clamp (2 pcs.) - Page 3 Tube for coil block screw Tube for traon wheel bridge Remarks: 12 Holding ring for dial 0866 544 39WWinding stem 0351 926 The types of these parts depend on the design of each model. Refer to " SEIKO Casing Parts Catalogue" to choose corresponding parts.
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Page 4: Technical Guide
TECHNICAL GUIDE Cal. 7C17B G The explanation here is only for the particular points of Cal. 7C17B. G For the repairing, checking and measuring procedures, refer to the "TECHNICAL GUIDE, GENERAL INSTRUCTION". REMARKS ON DISASSEMBLING AND REASSEMBLING Use the universal movement holder for disassembling and reassembling. - Page 5 Cal. 7C17B Movement Eccentric dial pin Dial The foot of the dial has been tightened with the eccentric dial pin. Turn the screw driver right and tighten to attach, and turn left and loosen to remove it. Eccentric dial pin *eccentric dial pin is non-supply parts, therefore please do not lose it.
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Page 6: Value Checking
Cal. 7C17B Winding stem To prevent any crack onto the main plate, gently set the winding stem while turning it. Center wheel bridge Lubricating VALUE CHECKING ● Coil block resistance 2.0 ∼ 2.5 kΩ ● Current consumption For the whole of the movement：less than 1.30μA For the circuit block alone：...