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PARTS CATALOGUE / TECHNICAL GUIDE
[SPECIFICATIONS]
Item
Module
Module size
Outside diameter
Casing diameter
Height
Display medium
Liquid crystal driving system
Display system
Additional mechanism
Loss/gain
Regulation system
Measuring gate by quartz tester
Battery
Cal. A860A
Cal. A861A
Cal. No.
The illustrations refer to Cal. A860A.
ø32.0 mm
31.6 mm between 3 o'clock and 9 o'clock sides
31.7 mm between 6 o'clock and 12 o'clock sides
–
7.1 mm (Including the battery portion)
Nematic Liquid Crystal, FEM (Field Effect Mode)
Multiplex driving system
• Time display
• Stopwatch display (In 1/100 second increments for the first 20 minutes)
• Alarm display
• Speaking function (Current time, stopwatch measurements, hourly
time signal, alarm time and selected digits to be adjusted)
• Battery life indicator
• Alarm test system
Monthly rate at normal temperature range: less than 20 seconds
Nil
Any gate can be used.
SEIKO CR2025, Maxell CR2025, Sony CR2025, Matsushita CR2025,
Eveready ECR2025
Battery life is approximately 2 years.
Voltage: 3.0 V
A860A
A861A
(x 1.0)
1
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Related Manuals for Seiko A860A
Summary of Contents for Seiko A860A
- Page 1 Monthly rate at normal temperature range: less than 20 seconds Regulation system Measuring gate by quartz tester Any gate can be used. Battery SEIKO CR2025, Maxell CR2025, Sony CR2025, Matsushita CR2025, Eveready ECR2025 Battery life is approximately 2 years. Voltage: 3.0 V...
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Page 2: Parts Catalogue
PARTS CATALOGUE Cal. A860A, A861A → Disassembling procedures Figs. : ← Reassembling procedures Figs. : Lubricating: Types of oil Oil quantity Silicone oil 500,000 Normal quantity Case back screw Case back Case back gasket Module Spacer screw Spacer 4580 009... - Page 3 PARTS CATALOGUE Cal. A860A, A861A 110 151 Installing direction indication sheet 4225 435 Battery clamp Battery 4408 068 (See the front page.) Washer for switch spring (B) 4245 270 Switch spring (B) 4245 280 Switch spring (A) (Reversed battery guard)
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Page 4: Technical Guide
TECHNICAL GUIDE Cal. A860A, A861A • The explanation here is only for the particular points of Cal. A860A and A861A. • For the repairing, checking and measuring procedures, refer to the “TECHNICAL GUIDE, GENERAL INSTRUCTIONS”. STRUCTURE OF THE CIRCUIT BLOCK... - Page 5 TECHNICAL GUIDE Cal. A860A, A861A III. REMARKS ON DISASSEMBLING AND REASSEMBLING Use the universal movement holder for disassembling and reassembling. Speaker block Guide groove • How to install Set the speaker block so that the speaker lead terminal is positioned between the guide grooves of the case Speaker lead as shown in the illustration at right.
- Page 6 TECHNICAL GUIDE Cal. A860A, A861A 11 Battery • How to install Set the battery with its (-) side down. 12 Switch spring (A) • How to remove Release the five hooking portions of the switch spring (A) indicated by the arrows in the illustration at right, and then, lift it up to remove.
- Page 7 TECHNICAL GUIDE Cal. A860A, A861A IV. VALUE CHECKING • Speaker block resistance 44 Ω ~ 84 Ω • Current consumption Less than 5.0 µA (with voltage supplied from a battery) For the whole module Less than 4.0 µA (with voltage supplied from a battery) For the circuit block alone : •...
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Page 8: How To Use
HOW TO USE Cal. A860A, A861A • The functions and operation of the buttons are listed below. For checking or repair of the watch, refer to the table below for guidance. Button B Button C Button A (Changeover of modes) - Page 9 HOW TO USE Cal. A861A HOW TO REMOVE/ATTACH THE RING AND AIR CHAMBER (FOR CAL. A861A) • Before removing the air chamber from the watch case or attaching it to the case for such purposes as cleaning and replacement with a new one, be sure to push the air release button to let the air completely out of it.
- Page 10 HOW TO USE Cal. A861A • How to attach 1) Set the ring at the 12 o’clock side of the case. * The two protruding portions of the ring differ in size. Check that they are set to the hollows of the corresponding sizes.
- Page 12 99-1 Printed in Japan...
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