GE Brivo OEC 865 - Page 84

Brivo OEC 715/785/865/865 Mobile C-Arm X-Ray Product Service Manual
2-30
INTERLOCK_LOOP_B
The other termination
of interlock loop
Passive
-
J2-B15
MCB as part of the whole interlock
loop. If connecter J2 of MCB is
loose, the whole inter loop will be
broken, Mainframe will power off.
Test Points
Reference
Name
Description
TP1
GND
Ground
TP4
KV-CLB
KV control signal used to calibrate mA feedback
TP5
KVO
KV control signal to KV control board
TP6
MA+
mA feedback signal without KV calibration
TP7
MA-SMP
mA sample signal with KV calibration
TP8
MA-SET
mA setting signal
TP9
PREHEAT
mA preheat signal
TP10
MAC
mA control signal to Filament board
TP11
PI
Output of proportional & integral circuit
TP12
MA-A
mA control signal without PREHEAT
TP13
PULSE
mAS control signal
TP14
MAS
mAS pulse signal
TP17
MA-OFF
mA control signal offset setting
TP18
PWM
Filament control signal from FDB
LED Indicators
Reference
Name
Description
D12
2V5
Light lights when +2.5V is available
D13
1V2
Light lights when +1.2V is available
D20
CAMR
RXD485+ & RXD485-. D20 on MCB lights normally, and flickers in
communication
D22
KEYON
KEYSW_OFF & KEYSW_ON & KEYSW_COM. D22 lights when "KEYSW_ON" & turns
off when "KEYSW_OFF"
D24
CC
SPI_CC_CS. D24 on MCB lights normally, and turns off when CCB is drived
D26
HLFF
FOOT_HLF & FOOT_COM. D26 turns off when FOOT_HLF & FOOT_COM are
connected
D27
KEYOFF
KEYSW_OFF & KEYSW_ON & KEYSW_COM. D27 lights when "KEYSW_ON" & turns
off when "KEYSW_OFF"
D28
HINT
D41 turns off when footswitch interupt signal is available to MCU
D29
SIMO
SPI_SIMO. D29 flickers on MCB
D30
THM
THERMAL_SWTICH_A & THERMAL_SWITCH_B.D30 on MCB lights normally, and
turns off in overheat error
D31
TEST
Reversed for future use
D32
INIT
D32 turns off when FPGA configuration completes
D33
HLFH
HAND_HLF & HAND_COM. D33 turns off when HAND_HLF & HAND_COM are
connected
D34
SAV
FOOT_BUTTON1 & FOOT_COM. D34 turns off when press
D35
WKT
WK_A & WK_B. D35 on MCB turns off normally, and flickers in communication