[time-nuts] Re: QM10 Quartz chronometer

[perdix at tellink.net]

Check this link: https://www.watchuseek.com/threads/seiko-marine-chronometer-qm-10.4913/
It indicates that the QM-10 used a 4.19MHz crystal.

John

----- Original Message -----
From: "Peter Torry via time-nuts" <time-nuts at lists.febo.com>
To: time-nuts at lists.febo.com
Cc: "Peter Torry" <peter.torry at talktalk.net>
Sent: Friday, November 26, 2021 9:09:07 AM
Subject: [time-nuts] QM10 Quartz chronometer

Hello list,

I am restoring a Seiko Quartz QM10 Marine Chronometer that is currently 
inoperative. Preliminary investigations would indicate that the 
oscillator (TO5 header) isn't functioning therefore I am seeking any 
information as to its nominal frequency and whether it is just a crystal 
or an oscillator. I can follow the cmos dividers OK but a schematic 
diagram would be most useful.

Any help or pointers much appreciated.

Kind regards

Peter   UK
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