Mindray DPM 4 Service Manual

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Watchdog
When powered on, the Watchdog provides the reset signal for CPU.
The patient monitor provides the watchdog timer output and voltage detection functions.
2.2.8 Power PCB
2.2.8.1 General
This module provides DC working current for other boards.
2.2.8.2 Principle diagram
Figure 2-11 Working principle of the power PCB
2.2.8.3 Principle
This module can convert 220V AC/12V DC or the battery voltage to 5V DC and 12V DC
voltages, which are supplied for other boards. When the AC voltage and batteries coexist, the AC
voltage is supplied for the system and used to charge the batteries.
AC/DC
This part converts the AC voltage to the low DC voltage for the subsequent circuits; besides, it
supplies the power for charging the batteries.

Mindray DPM 4 Specifications

General

Brand	Mindray
Model	DPM 4
Category	Medical Equipment
Language	English