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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
Battery
Battery No.
Voltage
Battery life
Jewels
Cal. 5Y85A/5Y89A
Cal. No.
The illustrations refer to Cal. 5Y89A.
ø 24.0 mm
21.5 mm between 3 o'clock and 9 o'clock sides
21.5 mm between 6 o'clock and 12 o'clock sides
ø 23.3 mm
21.3 mm between 3 o'clock and 9 o'clock sides
21.5 mm between 6 o'clock and 12 o'clock sides
3.05 mm (Including battery portion)
3 hands (hour, minute and second hands)
Step motor (Load compensated driving pulse type)
• Day calendar
• Instant setting divice for day calendar
• Date calendar
• Electronic circuit reset switch
• Train wheel setting device
• 24 hour dial disk
Monthly rate within normal temperature range: less than 20 seconds
Nil
Use 10-second gate
SEIKO SR916SW
1.55 V
Approximately 3 years
1 jewel
5Y85A
5Y89A
(x 1.0)
1
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Summary of Contents for Seiko 5Y85A
- Page 1 PARTS CATALOGUE / TECHNICAL GUIDE Cal. 5Y85A/5Y89A [SPECIFICATIONS] Cal. No. 5Y85A 5Y89A Item Movement The illustrations refer to Cal. 5Y89A. (x 1.0) ø 24.0 mm Movement 21.5 mm between 3 o’clock and 9 o’clock sides Outside diameter size 21.5 mm between 6 o’clock and 12 o’clock sides ø...
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Page 2: Parts Catalogue
Remarks Moebius F Large quantity Some parts have different parts codes between the SEIKO Watch Oil S-6 Cal. 5Y85A and Cal. 5Y89A. Some parts are used only for the Cal.5Y85A. Hour, minute and second hands Day hand 24-hour hand Date hand... - Page 3 The parts shown below are the common parts except for 27 Battery connection (+). 25 Battery 26 Battery connection (+) screw 0012 354 27 Battery connection (+) 4268 547 (5Y85A) 4271 552 (5Y89A) 28 Circuit block 4001 748 29 Coil block screw...
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Page 4: Technical Guide
Cal. 5Y85A/5Y89A TECHNICAL GUIDE The explanation here is only for the particular points of the Cal. 5Y85A and 5Y89A. For preparing, checking and measuring procedures, refer to the “TECHNICAL GUIDE, GENERAL INSTRUCTIONS”. I. REMARKS ON DISASSEMBLING AND REASSEMBLING 2 Hour, minute, second hands ~ 5 Date hand How to install the hands 1. - Page 5 24 Hour wheel How to install the calendar wheels for the Cal. 5Y85A Refer to the illustration below to install the calendar wheels for the Cal. 5Y85A. Set the jumpers to mesh with the gear teeth. 17 Intermediate date wheel...
- Page 6 TECHNICAL GUIDE 5Y89A 9 Date driving wheel , 12 24-hour hand wheel ~ 17 Intermediate date wheel, 20 Calendar corrector setting wheel, 21 Intermediate wheel for calendar correction C, 24 Hour wheel How to install the calendar wheels for the Cal. 5Y89A Refer to the illustration below to install the calendar wheels for the Cal.
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Page 7: Troubleshooting
Cal. 5Y85A/5Y89A TECHNICAL GUIDE 20 Calendar corrector setting wheel D Lubricating Lubricate the inner edge of the oval hole on the main plate where the calendar corrector setting wheel oscillates. Moebius A Oval hole on the main plate 21 Intermediate wheel for calendar correction C ~ 23 Intermediate wheel for calendar correction A...