Spacelabs qube 91390 - Battery Switch PCBA for Options B and C

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3-7
91390 QUBE
T HEORY
Battery Switch PCBA for Options B and C
Figure 3-5 Battery Switch PCBA for Options B and C
The batteries ship pre-installed for qube options B and C and require
unit disassembly for replacement. The batteries used on these
options are the same type of Li-Ion smart battery used on option A,
but have a lower capacity and are physically shorter. The 670-1658-
xx battery board used on options B and C includes a small micro
switch mounted on the bottom left of the monitor (refer to
Figure 3-
6).
BACKLIGHT
J40
J9
INPUT
SELECT
DC_IN
V BATT 1
V BATT 2
3.3VAO
“ALWAYS
ON”
BATTERY
CHARGER
CPU
“ALWAYS ON”
MCU
CONTROL
BAT1_CH_LED
MAINS_LED
PWR_ON_LED
SW_PWR
RKEY
FP LEDs & IR
J50
BAT2_CH_LED
+3.3VAO
FET
SWITCHES
CH_LED2
CH_LED1
+3.3V
DC_IN
+5V / +3.3V
BUCK
-12V INVERT
+12V/+12V_REC
BUCK-BOOST
+5V
EN_3V
EN_5V
EN_18V
EN_12V
VCOM
EN_INV
+3.3V
-12V
+12VREC
+12V
EN_5V
EN_3V
EN_INV
EN_12V
VCOM
FAN
FAN_CTL
VCOM
VCOM
VCOM
+12V
+3.3VAO
J8
FAN_CTL
SMART
BATTERY 2
J9
P401 P402
BL_PWM
+12V
BL_PWM
+5V
TO LCD/ B EZZEL ASSY
TO FPGA PLD
TO LCD/ B EZZEL ASSY
+3.3VAO
+3.3VAO
BA TTERY CONNECTOR PCB A
670-1658-xx
DC_IN
PWR_RX_TX
TO
MAIN
CPU
ANY_PWR_IN
TO SYSTEM
FAILURE ALARM
PFAIL
WD_PWR
TO SYSTEM
FAILURE ALARM
WD_PWR
WD_MAIN
SYSTEM FAILURE ALARM
ANY_PWR_IN
FROM MAIN CPU
FROM P.S. “ALWAYS ON” CPU
PIEZOELECTRIC
BUZZER
FET
+5v
REG
ONE-
SHOT
ONE-
SHOT
SUPERCAP
V_ALARM
DUAL-
FREQUENCY
OSCILLATOR
670-1573-02 and later
CPU PCBA only
BATTERY
DISCONNECT
SMART
BATTERY 1
BATTERY
1 SENSE
BATTERY
2 SENSE
SW1
TO MUX
TO MUX
ADC
+3.3V
+5V
+12V
DC_IN VCOM
-12V
BATT 1 SENSE BATT 2 SENSE
MUX
ADC
SELECT
VCOM
DC_IN
P/O CPU
PCBA
670-1573-xx
DC_IN
TO/FROM
MON-DOCK PCBA