Mindray BS-120 - Power Supply Unit

6 Hardware 6-11
LED Mark LED On LED Off Remark
D6-GREEN_LED
Reagent
refrigeration
temperature 0℃
<T<10℃
Reagent refrigeration
temperature T in other
status
D7-PELTIER_LED
Reagent
refrigeration
power is on.
Reagent refrigeration
power is off or
erroneously.
D8-FAN3_LED
The J73 fan block
up, please check
the fan.
The J73 fan works
normally.
D9-FAN1_LED
The J71 plug
doesn’t connect or
is broken.
normal
D14-FAN4_LED
The J74 fan block
up, please check
the fan.
The J74 fan works
normally.
D15-12VFAN_LED
12VFAN works
normally
12VFAN off or
erroneously
D16-FAN2_LED
The J72 plug
doesn’t connect or
is broken.
normal
Reaction disk temperature sampling board（
（（
（BA10-30-78268）
））
）
+12V
12V works
normally
12V off or erroneously
PFC board（
（（
（BA10-30-77764）
））
）
LED1 A12V on A12V off or erroneously
Controlled by
software
24V board（
（（
（BA10-30-77766）
））
）
LED350 24V on 24V off or erroneously
12V&5V board（
（（
（BA10-30-77768）
））
）
LED350 B12V on B12V off or erroneously
LED351 C12V on C12V off or erroneously
LED352 5V on 5V off or erroneously
6.8 Power Supply Unit
 The power supply unit consists of three circuit boards: PFC board, 24V board and
12V&5V board.
 PFC Board:
①. EMI filter network;
②.Supplying the PFC circuit which conforms to the IEC61000-3-2 standard. Supplying
the +390V to drive the 24V board and 12V&5V Board;
③.Controlling the 24V, 12V (4.7A) and 5V outputs through the switch of the analyzing
unit;
④.Supplying stable 12V (4.5A) for the lamp, controlled by the system signal;
⑤.Supplying 14 V VDD voltage to drive the 24V board and 12V&5V board;