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Seiko DH33A Parts Catalogue /Technical Manual
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Seiko DH33A Parts Catalogue /Technical Manual

Seiko DH33A Parts Catalogue /Technical Manual

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PARTS CATALOGUE / TECHNICAL GUIDE
[SPECIFICATIONS]
Item
Movement
Outside diameter
Movement
Casing diameter
size
Height
Display Medium
Liquid Crystal Driving System
Display System
Additional Mechanism
Loss/Gain
Regulation System
Measuring Gate by Quartz Tester
Battery
Cal. DH33A
( For Movement Replacement )
Cal. No.
ø36.2mm
9.0 mm
Neumatic Liquid Crystal, FEM (Field Effect Mode)
1/5 Multiplex driving system
• TIME/CALENDAR display
• REGULAR ALARM display
• Dive mode display
2
• FO
(NITROX) display
• DIVE PLAN display
• DIVE PLAN display
• Daily Alarm function
• NITOROX Diving function
• Dive Plan function
• Dive Log function
• Hour Correction function
• Dive function
Monthly rate at normal temperature range: less than 15 seconds
Trimmer condenser
Any gate can be used
Lithium battery SEIKO CR2032
Voltage : 3V
Battery life is approximately 3 years
DH33A
• HOUR CORRECTION display
• DIVE LOG display
• Warning Alarm function
• Battery Life indicator
• EL Backlight
(x 1.0)
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Summary of Contents for Seiko DH33A

  • Page 1 • Dive function Loss/Gain Monthly rate at normal temperature range: less than 15 seconds Regulation System Trimmer condenser Any gate can be used Measuring Gate by Quartz Tester Lithium battery SEIKO CR2032 Battery Voltage : 3V Battery life is approximately 3 years...

  • Page 2: Parts Catalogue

    PARTS CATALOGUE Cal. DH33A Disassembling procedures Fig. : Reassembling procedures Fig. Lubricating: Types of oil Oil quantity Silicone grease 500,000 c.s. Normal quantity • The movement parts are not provided. Case back screw • The rotation movement code is UDH3320,which includes the parts 4 to 9 .

  • Page 3: Technical Guide

    TECHNICAL GUIDE Cal. DH33A I. REMARKS ON BATTERY CHANGE When changing the battery, follow the procedures below. <How to remove> 1. Remove the comment seal. Battery clamp hooking portion * Check where the comment seal was put, as it must be put back to the same place.
  • Page 4 TECHNICAL GUIDE Cal. DH33A Sensor unit mounting plate Sensor unit mounting plate Sensor • Set the sensor unit board to the inductive portion of the module, on which place the sensor unit mounting plate. Then screw them up tightly. Sensor unit board...
  • Page 5 TECHNICAL GUIDE Cal. DH33A IV. VALUE CHECKING AND ADJUSTMENT Current Consumption For the whole module (in the WATCH mode) : Less than 2.5 µA (With 3.0 V. supplied from a battery) <How to measure the current consumption> 1. Remove the lithium battery and connect the tester as illustrated below.
  • Page 6 TECHNICAL GUIDE Cal. DH33A 1. How to set the watch to the TEST mode. To show the "TEST mode", reset the circuit while keeping Button A (MODE button) and Button C (SELECT button) pressed. (See Illustration 1 and 2.) If this is not done properly, the display becomes blank or return to the normal TIME/CALENDAR display.
  • Page 7 TECHNICAL GUIDE Cal. DH33A The table 1 below shows the pressure index value corresponding to the atmospheric pressure. The variance in the pressure index value is within ± 1 count. [ Table 1 ] atomospheric atomospheric atomospheric pressure index pressure index...
  • Page 8 TECHNICAL GUIDE Cal. DH33A Time Accuracy • In order to measure time accuracy, light up all the segments of the display. • Any gate of the quartz tester can be used for measurement. <How to light up all the segments>...