Spacelabs 91369 - Power Supply Connector

Theory
91369 Service Manual 3-6
Power Supply Section
The power supply subsystem produces power to drive the entire system, including the CPU, display,
parameter module, and battery charger (Figure 3-2).
Figure 3-2: Power supply section
Power Supply Connector
Power is supplied to the monitor from an external DC power supply. Power arrives at the CPU PCBA via a
single connector, P100, at 18 VDC.
P901
BACKLIGHT
CONTROL
EXT. P.S. / BATTERY
INPUT
COMPARATOR
SLOW
POWER-ON
+12 V LINEAR
REGULATOR
EXTERNAL P.S.
INPUT
BATTERY B
BATTERY A
LINEAR 5 V
20 V
CHARGER PRE-
REGULATOR
BATTERY
CHARGER
LED FLASHER
+/- 12 V, -5 V
POWER
CONVERTER
+12 V
-12 V
-5 V
+20 V
SHUTDOWN
POWERFAIL
CPU &
POWER SUPPLY
MONITORING
STATUS
+5 V, +3.3 V
POWER
CONVERTER
+5 V
+3.3 V
A & B BATTERY
CHARGERS
CHARGER CPU
& POWER
CONVERTER
OVER-CURRENT
PROTECTION
FRONT
PANEL LEDS
{
RECORDER
POWER +15 V
SLOW
TURN-ON
+5 V
+3.3 V
+15 V
+12 V
-12 V
-5 V
P100
P200
BATTERY FAULT
DIGITAL
POT
+18 VDC
ON/OFF
SWITCH
POWER SUPPLY SECTION
175-1508-01
175-1611-00
OR
91369 (10")
91370 (12.1")