$5.00
You Saved
This is a genuine circuit block electronic module for the MIYOTA/CITIZEN FS00 quartz chronograph movement. As the movement‘s core electronic control unit, the module integrates a quartz oscillator and CMOS integrated circuit, generating a precise 32,768 Hz time base frequency to drive the stepper motor, controlling the precise operation of the central hour/minute hands, central chronograph seconds hand, 60-minute chronograph totalizer at 10:00, 24-hour subdial at 2:00, small running seconds at 6:00, and date window at 4:00.
As an original OEM replacement part, it provides a direct solution for repairing FS00 movements that have failed due to water ingress, battery leakage, or aging electronic components.
Genuine MIYOTA Part – Japanese factory-original for FS00, not a copy, ensuring perfect fit.
High-Precision Time Base – Integrated 32,768 Hz quartz oscillator with ±20 sec/month accuracy, providing a stable and reliable time reference.
Full 6-Hand Chronograph Support – Drives central hour/minute hands, central chronograph seconds hand, 60-minute chronograph totalizer, 24-hour subdial, small running seconds, and date display.
Quick Reset (Heart Cam Reset System) – Utilizes a heart cam reset system, ensuring fast and accurate zero-return of the chronograph second hand.
Cost-Effective Repair – Replace only the faulty circuit board instead of the entire movement, offering significant cost savings.
Broad Compatibility – The circuit board is directly compatible with the FS00(FS03) slanted-pusher movement and is also interchangeable with FS01(FS04) and other movements.
| Parameter | Details |
|---|---|
| Part Name | Circuit Block / Electronic Module |
| Compatible Movements | MIYOTA/CITIZEN FS00 (FS03), FS01 (FS04), FS02, FS05, etc. (FS family quartz chronograph) |
| Movement Size | 10.5‴ (approx. 23.7 mm) |
| Movement Thickness | 4.13 mm |
| Frequency | 32,768 Hz |
| Battery Type | SR626SW (377), 1.55V |
| Battery Life | Approx. 2 years |
| Accuracy | ±20 seconds per month |
| Functions | Central hour/minute, central chronograph seconds (1/1 sec), 60-minute totalizer at 10:00, 24-hour subdial at 2:00, small running seconds at 6:00, date at 4:00 |
| Hacking Seconds | Yes (seconds hand stops when crown is pulled) |
| Jewels | 0 |
| Origin | Japan |
| Condition | Brand new, genuine |
MIYOTA/CITIZEN FS00, FS01, FS02, FS05, etc. (FS family quartz chronograph movements).
Repair of non-running movements, faulty chronograph functions, non-advancing date, or no pulse output after battery replacement.
Particularly suitable for failures caused by water ingress, battery leakage corroding the PCB, or aged electronic components.
Professional watch workshops, brand service centers, DIY watch enthusiasts.
1. Is this a genuine MIYOTA circuit board?
Yes. It is a Japanese factory-original part for FS00, FS01, FS02, FS05, and other FS series movements, not a third-party copy.
2. How can I tell if the circuit board needs replacement?
Symptoms: the movement does not run with a fresh battery; no pulse output detected on a timing machine; date does not advance (non-mechanical fault); chronograph functions are inoperative; visible corrosion on the PCB due to moisture or battery leakage.
3. Which movement models is this module compatible with?
This circuit block is compatible with FS00 (including the FS03 slanted-pusher version), FS01 (FS04 parallel-pusher version), FS02, FS05, and other MIYOTA FS family quartz chronograph movements. The FS01 features parallel pusher contacts for straight-sided cases.
4. Does the new circuit need calibration after installation?
No. Timekeeping accuracy is determined by the quartz crystal. New factory circuits are pre-calibrated to standard accuracy. A timing machine check is optional but recommended. If the chronograph second hand does not return to zero after battery replacement, refer to the MIYOTA user manual (pages 11-13) for zero-reset adjustment using the crown and buttons.
5. What should I pay attention to during installation?
Disconnect the battery before handling. Align the circuit block with the locating pins and contact pads on the mainplate, ensuring good contact between the metal springs and the coil leads. Use non-magnetic tweezers and anti-static precautions. After installation, the stepper motor rotor should spin freely by hand. Professional installation is recommended for inexperienced users.
Fast worldwide shipping within 3 business days.
Competitive pricing on Seiko/Hattori calibers.
3,000+ watch movements and parts in stock.
Trusted by watchmakers worldwide.
Personalized sourcing support via [email protected] or WhatsApp +86 18620212114.
