Service manual

34 Calibration Welch Allyn Propaq Encore Vital Signs Monitor
Procedures
This section contains procedures for calibrating the Propaq Encore monitor:
• Recharger board
• Analog board
• Digital board
Setup
You must work at a static-protected work station. In order to calibrate the monitor you
must open and then perform some disassembly to reach the necessary calibration points.
1. Before you begin disassembly, charge the battery pack for at least 8 hours to ensure it
is fully charged.
2. Remove any options attached to the monitor. If either the SpO
2
or expansion module
is attached to the monitor, remove it before starting the calibration. The calibration
procedures in this section are for the three Encore monitor boards only.
3. Remove the battery pack.
4. Disconnect the ac power adapter from the monitor’s right side panel power input
connector.
5. Open the monitor.
6. Disconnect P1 (expansion connector cable) from the Analog board and open the front
chassis approximately 90 degrees.
Adult cuff (provided with monitor); cylindrical object about the size of an adult’s arm
Welch Allyn cuff calibration kit, Welch Allyn part number 008-0012-XX
Propaq Encore ac power adapter (provided with monitor)
Resistor test loads (4.9¾ and 4.65¾). Refer to “Manufacturable Test Equipment” on
page 123.
DC supply cable, Welch Allyn part number 008-0290-XX
Tools necessary to disassemble and reassemble the Encore monitor. (See “Repair
Procedures” on page 47 for a list of necessary tools and instructions on opening the
monitor.)
Table 10. Required Equipment
Description
Caution All calibration, service, and repair must be done at a static-protected
work station. Failure to protect against damage due to static discharge can
damage components in the Propaq Encore.
Caution Refer to “Repair Procedures” on page 47 for all disassembly and re-
assembly procedures. Failure to follow disassembly procedures may result in
damaged internal parts.