Have open the diesel model DZ9004 and replace both battries, and unable to reboot the digital seconds count on dial. any idea how to get it started?

Question edited for full 'make model (what it is)'.
Question moved from Computers category.

Lots of manuals, but not for that one.

https://www.google.com/search?q=diesel+DZ7158+manual

The review show it to be very straightforward 2 analog dials and a an LCD digital display.

The top button on the right will start and stop the chronograph (basically fancy word for stopwatch) timer counting - when started you will see the smaller subdials inside start to move, they are counting time upwards. Hitting the top dial again will stop the time count. Hitting the bottom most button will reset the chronograph time counter dials back to zero, so that you can start them again to time something new and properly start the timing from zero. The center " button" is the pull- out crown which allows you to change the time and date as you pull it out to different notches. Hope this helps!

here are instructions from diesel:

http://store.dieseltimeframes.com/wcsstore/CommonDiesel/instructions/ENGLISH/Diesel_Digital-Guide_ENG.pdf

more specifically


TIME OF DAY MODE
1. Press C to toggle between Time 1 and Time 2.
2. Hold C for two seconds to set Time 1 or 2 as default.
3. Press D to turn on/off key tone.
Time 1
> To set Time, press A until hour flashes. Press B to select the setting
item. Use C and D buttons to adjust the values up or down. Press A to
exit set mode.
Time 2
> To set Time, press A until hour flashes. Press B to select the setting
item. Use C and D buttons to adjust the values up or down. Press A to exit set mode.
> The range difference between Time 1 and Time 2 is 23 hours.
CHRONO MODE
1. Press C to start and stop chronograph.
2. Press D to Split/Reset the chronograph.
3. Press A to recall the memory if Chronograph is stopped.
4. Press A again to view the next lap.
5. Press C or D to exit Recall mode and go back to Chronograph mode.
6. There are a total of 10 lap memories.
TIMER MODE
1. There are 3 different modes of timer: Count Down-Stop, Count DownRepeat, Count Down-and Up.
2. Press C to start/stop the timer counting.
3. Press D to reset the counter to the preset value if timer is stopped.
4. Press and hold A for 2 seconds to enter Timer Setting Mode. 35 Timer Setting Mode


5. Press B to cycle around the setting item: timer-type, hour, minute,
second and to back timer-type again.
6. Press C and D to increase/decrease the setting value.
7. Press A to exit the setting mode.
TIMER ALARM
Timer alarm will beep 2 times a second for 30 seconds.
ALARM MODE
1. Press C to select the alarm.
2. Press D to enable/disable the alarm.
3. Press B to change to Time mode again.
ALARM SETTING MODE
1. Press and hold A for 2 seconds to enter the alarm settings mode.
2. Press C and D to increase or decrease the settings value.
3. Press A to exit the settings mode.

The three small dials on this watch are all part of a "stopwatch" system. The small dial at the 12 o'clock is for tenths of a second( each half circle completed is one second or 1 whole rotation equals 2 seconds.) the small dial at the 6 o'clock counts a full 60 seconds for each revolution, and the dial at the 9 o'clock counts minutes(one full circle equaling an hour.) when the stop watch is started the 12 o'clock and 6 o'clock dials will start at the same time. you will notice that every half turn on the top dial equals one "tick" on the bottom dial. After the first minute of timing the top dial will stop ticking as it is for more precise timing of things that take less than 1 minute. each full rotation of the bottom dial will then equate to one "tick" of the 9 o'clock dial. hence the three dials counting tenths of a second, seconds and minutes. the setting of these dials is fairly easy once you understand the purpose. on the side of the watch there are two buttons(one top and one bottom) with a setting wheel in the center. When in use the top button starts and stops the stopwatch and the bottom button resets the counters. To set the watch simply pull the center wheel away from the watch all the way(2 clicks) set your minute hand and hour hand and then tap the bottom button repeatedly until the small dials all line up straight up. once that is done push the center wheel button halfway into the watch or one click to set the date. then simply push the wheel the rest of the way in and voila!!! hope this answers some questions

The small bottom dial is seconds counter and there is no option to set or reset it as it is part of the main gear train - it just counts the seconds. Top right dial is 1/10 seconds counter and runs only when the chronograph function is engaged. One full circle indicates 1 second. Top left dial is 30 minutes counter and runs only when the chronograph function is engaged. One full circle indicates 30 minutes, two circles = 1 hour. The big centre seconds hand is actually Chronograph hand and runs only when the chrono function is engaged. So, the chronograph hand and two top dials works all together when chrono function is engaged. To start chrono: push upper button once. To stop chrono: push upper button again (once). To return all hands to zero: push lower button once. There is another option: if you already stopped chrono by pushing upper button, but want to continue counting without returning hands to zero, push the upper button once more and the counting will start from the point where it stopped. You can repeat this as many as you wish - it will count on and on, till you will stop it and reset to zero. Fine tuning of chrono hands can be made by pulling the crown half way out and while leaving in this position pushing and holding one of the push buttons (which one - depends on movement caliber). Watch has an tachymeter function as well (big inner ring). Learn how to use it by browsing through my Tips and Tricks- it is explained there. Rate me, please.

This information comes from the movement manufacture and helps figure out what does what. I also have a yacht timer with no instructions.....hope this helps

A combination of design and technology, ISA 8270 is a precise racing timer developed especially for yachting races, displaying count-down during regatta departures with audible signals, followed by cumulated time during races. The dimensions (25.60mm, H 4.60mm) offer a large variety of opportunities for watch designs. It is suitable for the manufacture of models for gents and ladies watches.

This new calibre is an analogue quartz timer fitted with an alarm function. It displays the hours, minutes, seconds (small jumping seconds at 2 o’clock counter), and date shown by a date window at 6 o’clock. In addition, it allows count-down and race timing. The small hand at 10 o’clock counter and the central hand facilitate the display of count-down and time measurement clearly visible.

Count-down, Racing Timer and Alarm features

ISA 8270 yachting movement not only provides the traditional count-down at 10, 6 and 5 minutes, but also the versatility of setting count-downs at any minute from 10 to 1 minute.

One special feature is that it allows the possibility of recalibrating the count-down at every minute up to the last minute before departure. This latter function allows the navigators to readjust the watch at any time during the count-down to the closest full minute in order to be in line with the official procedure announced by the racing committee (RC) boat so as to get off the best possible start. Audible signals are emitted every minute to alert the progress of count-down. To give higher accuracy, every-second audible signals are emitted during the last 10 seconds count-down to ensure knife-sharp precision. Immediately after the departure, the count-down automatically shifts to the racing timer mode to measure the time of the race event for a maximum of 96 hours. Setting, start/stop and recalibration of count-down and race timing are facilitated by the pushers (at 2 o’clock and 4 o’clock), which are easier to operate.

Thanks to an oversized counter hand and a highly visible flange on the dial that our customers may design, the navigators can best monitor the time remaining before departure and during the entire procedure.

The alarm time is displayed in an analogue mode. Alarm start/stop is enabled by a pusher at 8 o’clock and is displayed by a central alarm hand (12 hours).

Superb performance

Born of precision, accuracy and innovation, ISA 8270 offers excellent quality and performance. Intended for yachting races, this movement gives answer to sports watches requiring indispensable qualities: strength, endurance, agility and outstanding speed.
When the trend of sportive and fashionable quartz watches prevails, this new Swiss Made ISA 8270 priced competitively with outstanding performance answers the expectations of an increasing market demand and customers, who wish to add a number of value-added exceptional designs to their next collections with strong sporting character.

Specifications
Calibre: ISA 8270 Yachting Movement
Size 11 1/2’’’
Swiss Made quartz movement, 9 jewels
6 hands, 2 counters, 3 pushers
Hour, minute, small second at 2H counter
Date window at 6H
Count-down (max. 10 minutes)
Racing timer (max. 96 hours)
Alarm (12 hours)

Technical information
Diameter: 25.60mm
Movement height: 4.60mm
Height of stem and pushers: 2.25mm

Your watch is fitted with chronograph movement 5040D made by Ronda (Switzerland). If you take a closer look, then you will realise that the subdial at 3 o'clock is counting seconds allready. This is your seconds dial, not the big one.
The big seconds hand actually is the chronograph hand (stopwatch) and, when activated, works together with 1/10th counter.
Follow this link and see for yourself:

http://www.ronda.ch/e/index_bedienung.html

Find movement 5040D and click on INTERACTIVE version.

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It sounds to me as it is a quartz chronograph and it is right that the centre seconds hand moves only if the pushbutton is pressed. If you look close enough, you will notice that the small subdial finger is ticking and counting seconds. It is recommended to replace battery, as sometimes watches been laying in stores for a few years before selling and the battery is flat or underpowered.
Want to know more about your watch? Go to www.invictawatches.com and find out.

Regards

Arthur

This link has all the instructions for all the diesel watch movements

http://store.dieseltimeframes.com/text/content/diesel/DieselENGLISH.pdf

The advice given here is accurate to a degree. When wound, a rolex daytona IS running. However, it is the running seconds hand in the small sub-dial that is actually running. In the earlier Daytonas, this sub-dial was at the 9 o'clock position on the dial, (pre-2001 series daytonas). The later daytonas, from 2001 on, use the seconds at 6 position for counting seconds. The main sweeping second hand on the watch dial will NOT start until activated by the pusher at the 2 position. That pusher needs to be unscrewed and then pushed to start the large sweeping second hand. This action, in turn, starts the remaining 2 sub-dials in motion, counting minutes and hours. To stop the chronograph function, you push the pusher @ the 2 position again, to stop the sub-dial hands from counting, and then push the pusher @ the 4 position to re-set the dials to their "straight up position". This stops the chrono's function, until it is needed again, BUT the main running seconds, (at either the 9 or 6 sub-dial position, depending on the year series of the daytona) will continue to run, thus keeping accurate time.  Hope this gives you a better idea of how the timekeeping of the chronograph function on a Daytona works. So, to start your seconds running you need to start the chrono function by pressing the pusher at the 2 position. That will allow you to see the large sweeping second hand I think you're referring to here. Hope this has helped.
Doug