Aloka SSD 680 Repair

Aloka SSD-680 Service Manual

Early in the 1990s, Aloka Co., Ltd. launched the Aloka SSD-680, a diagnostic ultrasound console (the SSD-680EX/SSD-680STD operator's manual is dated November 1, 1992). It provides B-mode, M-mode, Doppler and color flow imaging. The console is intended for use in general abdominal, OB/GYN, vascular, and cardiac applications. The console has capabilities like dynamic real-time focusing, adjustable display modes, built-in computations for fetal age/weight, left-ventricular function, stenosis percentages, etc., and it can accept a range of multi-element probes (convex, linear, sector).

The SSD-680 was supplied internationally through medical equipment dealers, and as a result, it was used in clinics and hospitals all over the world, even though the precise manufacture and sales figures are not publicly available. As other Aloka models (such the SSD-875 and SSD-1200) appeared later in the 1990s, it was retired. Perhaps not the most advanced digital platform at the time, the device was designed for the mid-level imaging market—sonography departments in need of a general-purpose scanner with Doppler and color flow. These days, it is frequently found reconditioned or used. Although there aren't any well known recalls that are unique to this model, second-hand machines frequently have age-related problems such as probe wear, CRT/monitor degradation, and power-supply aging.

Source: Aloka SSD-680 - Alternate Service Manual provided by Scribd

The SSD-680 console has a built-in CRT monitor (10-inch or 12-inch depending on area), a sloping control panel with several rubber/membrane keys, and rotary knobs. On the back nameplate and frequently in the operator manual, the model identification ("SSD-680") is displayed, occasionally followed by the suffixes "EX" or "STD." According to the handbook, the device weighs about 155 kg (for the 10-inch monitor version). Two electronic probe connectors and an additional connector for an extra probe are located on the right-side panel, which also has a quarter-turn locking lever. The finish is usually beige or gray, like most medical equipment from the early 1990s. A person can identify this model from others in the Aloka range by looking for the era-specific control panel (pre-digital flat-panel era), the two-connector plus independent-probe layout, and the dedicated "SSD-680" marking.

Source: Aloka SSD-680 - Alternate Service Manual provided by Scribd

• Display Size: 10 in / 12 in
• Frame Rate: ≈ 25 frames per second
• Gray Levels: 256
• Magnification Levels: 0.1× / 1× / 1.6× / 2×
• Number of Probe Ports: 3 (2 electronic + 1 independent)
• Supported Probe Frequency Range: 2.5 – 7.5 MHz
• Video Output: 525 lines (NTSC) / 625 lines (PAL)
• Image Memory: 512 k (512 × 234 words)
• Power Supply: 100 / 118 / 220 V AC ± 10 %, 50 / 60 Hz
• Power Consumption: ≈ 1000 VA
• Dimensions: 540 mm × 1460–1680 mm × 810 mm
• Weight: ≈ 155 kg
• Operating Temperature Range: 10 – 40 °C
• Operating Humidity: 30 – 78 % (non-condensing)
• Gray Display Steps: 256
• Maximum Doppler Velocity (Color): ± 181 cm/s @ 3.5 MHz (PRF 12)

Source: Aloka SSD-680 - Alternate Service Manual provided by Scribd

• Aloka SSD-680 - Alternate Service Manual provided by Scribd
• Aloka SSD-680 - Alternate Operator Manual provided by Internet Archive
• Aloka Clinical Testing provided by ScienceDirect