Service manual

6
47
Repair Procedures
Introduction
This section provides instructions for removing and replacing serviceable modules in the:
• Propaq Encore monitor
• expansion module (which may include any or all of the following: printer, SpO
2
,
mainstream CO
2
,sidestream CO
2
)
•SpO
2
-only module
Instructions on how to remove the battery pack are followed by instructions on how to
disassemble the monitor, the expansion module, the printer, the SpO
2
module, and the
CO
2
module.
Propaq Encore Software
Propaq Encore system software is contained in PROMs (programmable read-only
memory) on various system board. The following PROMs may require replacement during
board exchange processes. See“Replacing PROMs” on page 70.
• DAP PROM on the analog board in the Encore monitor
• PCP PROM on the printer main board in the Expansion Module
• SCP PROM on the SCP board in the SpO
2
option
• MSP PROM on the CO
2
board (MSP) in the Expansion Module
• SSP PROM on the sidestream main board (SSP) in the Expansion Module
When you remove one of these boards for replacement, you should remove the PROM
from the board and store it in an anti-static plastic bag until you receive the replacement
board. Keeping the PROM allows you to install it in the new board and ensures the
replacement board will be compatible with the rest of your Encore system software.
Note
In general, reassembly procedures are the reverse of the disassembly
procedures. If there are items to note during reassembly, they are described after
the disassembly section.
WARNING Whenever the monitor is opened for calibration or repair, a risk
(leakage) current safety check and a hi-pot test must be performed, followed by a
complete functional verification. See “Functional Verification” on page 11.
Note
The DCP PROM and the digital board are not field replaceable due to external
programming requirements. Do not remove the DCP PROM. For digital board
service and/or a DCP software update, contact your Welch Allyn Service
representative.