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PARTS CATALOGUE / TECHNICAL GUIDE
[SPECIFICATIONS]
Cal. No.
Item
Movement
Movement
Outside diameter
size
Casing diameter
Height
Time indication
Driving system
Additional functions
Loss/gain
Regulation system
Measuring gate by quartz tester
Power generator
Power
supply
KINETIC E.S.U.
Operating voltage range
Maximum Continuous operating time
Number of jewels
Cal. 5D44A
3 hands (Hour, Minute and Second hands)
Calendar (Date: date dial, Day: retrogdade day indicator)
Step motor 2 pieces
• Direct drive indicator
Power reserve indicator
Real-time power indicator
• Energy depletion forewarning function
• Overcharge prevention function
• Electronic circuit reset function
• Second hand stop function
• Date correction function
Monthly rate: less than 15 seconds
(worn on the wrist at temperature range between 5 to 35 ºC)
Nil
Use 10-second gate.
Automatic generating system + Manual winding power generating system
MT920 Manganese titanium lithium rechargeable battery
1.05V - 2.50V
Approximately 1 month after the watch is fully charged
12 jewels
5D44A
Ø 30.0 mm
Ø 28.0 mm
6.25 mm
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Summary of Contents for Seiko 5D44A
- Page 1 PARTS CATALOGUE / TECHNICAL GUIDE Cal. 5D44A [SPECIFICATIONS] Cal. No. 5D44A Item Movement Ø 30.0 mm Movement Outside diameter size Casing diameter Ø 28.0 mm Height 6.25 mm 3 hands (Hour, Minute and Second hands) Time indication Calendar (Date: date dial, Day: retrogdade day indicator)
- Page 2 BEFORE STARTING REPAIR WORK ON CAL. 5D44A SEIKO Kinetic Direct Drive Cal. 5D44 is an embodiment of the SEIKO’s ‘emotional technology’. The watch features new functions but the knowledge of repairing the existing KINETIC series will be helpful. To repair the Cal. 5D44, therefore, you are requested to have the full knowledge of its functions and strictly observe the repairing and checking instructions provided in this guide so that the watch will be correctly repaired.
- Page 3 BEFORE STARTING REPAIR WORK ON CAL. 5D44A Crown position Functions by crown operation Functions by button operation Normal • Electric power generation by manual winding Clockwise turn: charging the watch by manual winding Counterclockwise turn: No function First click • Calendar setting...
- Page 4 BEFORE STARTING REPAIR WORK ON CAL. 5D44A Crown position Functions by crown operation Functions by button operation Second click • Time setting System reset (No power is generated.) If any improper function occurs, for example, the direct drive indicator hand stops moving while it is pointing anywhere other than the standby position, follow the instruction below to reset the built-in IC.
- Page 5 BEFORE STARTING REPAIR WORK ON CAL. 5D44A 3. HOW THE DIRECT DRIVE INDICATOR HAND WORKS 1. Power reserve indicator function • Except when the crown is being turned to charge the watch, the direct indicator hand functions as a power reserve indicator which shows how long the watch will keep operating within the range between the minimum 3 hours and the maximum 1 month.
- Page 6 BEFORE STARTING REPAIR WORK ON CAL. 5D44A 2. Real-time power indicator function <Display and movement flow of the direct drive indicator hand while charging the watch> Power generation status and generated power display Power reserve Initial status In-progress display A. While turning the crown B.
- Page 7 BEFORE STARTING REPAIR WORK ON CAL. 5D44A 4. HOW TO REACTIVATE THE WATCH AFTER IT STOPPED To reactivate the stopped watch, see the condition of the watch by following the steps below. T h e wa t c h s t ar t s o p e r a t in g Case 1: normally within a few seconds.
- Page 8 BEFORE STARTING REPAIR WORK ON CAL. 5D44A 5. HOW TO CHARGE THE WATCH WITH KINETIC ENERGY SUPPLIER YT-02A Set the crown to the 5J position. • Make sure that the watch is c orre c tly positioned as it may affect the amount of power generated. • The amount of power generated may vary depending the models of the watch.