Seiko 7N32C User Manual

1
PARTS CATALOGUE / TECHNICAL GUIDE
Cal. 7N32C
Cal. 7N33C
Cal. 7N39C
[SPECIFICATIONS]
Cal. No.
Item
7N32C
Movement
ø24.0 mm
21.5 mm between 12 o’clock and 6 o’clock sides
21.3 mm between 3 o’clock and 9 o’clock sides
The illustrations refer to Cal. 7N33C.
7N39C
Outside diameter
(x 1.0)
7N33C
ø23.3 mm
21.5 mm between 12 o’clock and 6 o’clock sides
21.3 mm between 3 o’clock and 9 o’clock sides
Casing diameter
Movement size
2.57 mm
Height
Time indication 3 hands
Driving system
Step motor (Load compensated driving pulse type)
Additional mechanism
2.78 mm
Day calendar
Instant setting device
for day calendar
_
_
Loss/gain
Monthly rate at normal temperature range: less than 15 seconds
Regulation system
Nil
Measuring gate by quartz tester
Use 10-second gate.
Battery
SEIKO SR920SW, Maxell SR920SW, Sony SR920SW,
Matsushita SR920SW, Eveready 371
Battery life is approximately 5 years.
Voltage: 1.55V
2 hands
2.57 mm
_
_
_
_
Jewels
1 jewel
Date calendar
Instant setting device for date calendar
Train wheel setting device
Electronic circuit reset switch
Battery life indicator

Seiko 7N32C Specifications

General

Movement Type	Quartz
Caliber	7N32
Display	Analog
Case Material	Stainless Steel
Water Resistance	50 meters
Battery Life	3 years
Band Material	Stainless Steel
Crystal	Hardlex
Functions	Date

Summary

Specifications

Parts Catalogue Procedures

Disassembling Procedure

Visual guide for disassembling watch movements using figure references.

Reassembling Procedure

Visual guide for reassembling watch movements using figure references.

Lubrication Guidelines

Specifies the type of oil and quantity for lubricating watch components.

Hand Installation Heights

Discrimination of Hand Installation Heights

Guidance on distinguishing hand installation heights based on dial and movement markings.

Hand Installation Height Combination for Cal. 7N32C

Details part combinations for discerning hand installation heights for Cal. 7N32C.

Hand Installation Height Combination for Cal. 7N33C

Hand Installation Height Combination for Cal. 7N39C

Technical Guide - Circuit Block

Structure of the Circuit Block

Explains the structure and identification marks of the watch circuit block.

Remarks on Disassembling and Reassembling

Provides notes on handling hands and placing the movement during disassembly/reassembly.

Technical Guide - Component Procedures

Intermediate Wheel for Day Correction

Instructions for setting the intermediate wheel for day correction on Cal. 7N33C.

Date Dial Guard Installation

Procedure for removing and installing the date dial guard without screws.

Technical Guide - Component Installation and Checks

Battery and Battery Connection Installation

Instructions for installing the battery and battery connection (+) securely.

Train Wheel Bridge Setting Position

Illustrations showing the correct setting position for the train wheel bridge.

Technical Guide - Winding Stem and Value Checking

Winding Stem Installation

Guidance on pushing the winding stem correctly into the main plate.

Value Checking

Procedures for checking coil block resistance and current consumption.