GENERAL
This section provides instructions for maintenance, cleaning, troubleshooting and operator replaceable parts for the Physician Digital Scale. Maintenance operations other than those described in this section should be performed by qualified service personnel.
MAINTENANCE
B e f o re first use and after periods of
1.Check overall appearance of the total scale for any obvious damage, abuse, etc.
2.Inspect condition of AC adapter cord and prongs, replace if needed.
CLEANING
Proper care and cleaning is essential to ensure a long life of accurate and effective operation. Disconnect the scale from the AC power source
1.Clean all external surfaces with a clean damp cloth or tissue. Mild soap and water solution may be used. Dry with a clean soft cloth.
2.Do not immerse the scale into cleaning or other liquid solution.
3.Do not use Isopropyl Alcohol or other solutions to clean the display surface.
TROUBLESHOOTING
Refer to the following instructions to check and correct any failure before contacting service personnel.
SYMPTOM |
| POSSIBLE CAUSE |
| CORRECTIVE ACTION |
Scale does not turn on | 1. | Battery | 1. | Replace batteries |
| 2. | Bad Power Supply (Plug power source into | 2. | Replace adapter |
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| display module, check LED light at back of display |
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| module to determine if adapter cord is working) |
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| 3. | Load cell cable is plugged into Communication port | 3. | Switch load cell cable to Load cell port |
| 4. | Faulty electrical outlet | 4. | Use a different outlet |
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Questionable weight or the | 1. | External object interfering with the scale | 1. | Remove interfering object from the scale |
scale does not zero | 2. | The display did not show ‘000.00 | 2. | Ask the patient to step off the scale. Zero |
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| before weighing |
| the scale and begin weighing process again. |
| 3. | Scale is not placed on a level surface | 3. | Place scale on level surface |
| 4. | Scale is out of calibration | 4. | Check weight with known weight value |
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The display shows “OVER” | The load on the scale exceeds | Remove weight, turn scale off, | ||
| the capacity (500lbs) | then turn on and try again | ||
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The display shows | The batteries are low | Replace batteries according to instructions | ||
“LO Bat” message |
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| ERROR LIST |
ERROR NO. DEFINITION | CHECK/REPLACE |
Err 1
Err 2
Err 3
Err 4
Err 5
Err 6
Err 7
Mathematical mistake; division by zero. | Will show when trying to calibrate with no calibration weight. |
Cannot calculate calibration factor |
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Insufficient weight during calibration | While in calibration procedure add more weight in load mode |
Unstable weight. Cannot calibrate. | Check the load cells mechanical surroundings and see nothing |
touches them and the cables are well soldered |
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Keypad failure | Check the connection of the keypad to the board connector. |
| If the problem persists replace the keypad |
Calibration jumper placed | Take out the jumper from the PCB to enable calibration |
High saturation state (high A/D) | The load cell is not connected properly. Check the cables, and mechanical |
| connection. If the problem persists, replace the set of load cells |
Low saturation state (low A/D) | See Err 6 |
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CALIBRATION PROCEDURE
The calibration procedure may be performed using a known weight in either kilograms or pounds. Simply set the scale for the desired unit of measure using the KG/LB key and start the calibration procedure. The following instructions assume the scale is set to measure lbs.
The calibration is performed using kg or lb, according to the unit of measure used upon entering into the calibration path. Note: The calibration weight must be no less than 60 lb (28 kg) and no more than 300 lb (135 kg).
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