SERVICE MANUAL (BSV-4251 BSV-4251A )
MODEL NAME
DOCUMENT NO
REVISION NO
REVISION DATE
PAGE
VSC BOARD PIN CONFIGURATION
Pin No
I/O
Specification
Description
1 ( 5V )
I
5V
VSC 5V Input
2 ( 5V )
I
5V
VSC 5V Input
3 ( 5V )
I
5V
VSC 5V Input
4 ( GND )
GND
5V Ground
5 ( GND )
GND
5V Ground
6 ( GND )
GND
5V Ground
7 ( 12V )
I
12V
VSC 12V Input
8 ( 12V )
I
12V
VSC 12V Input
9 ( GND )
GND
12V Ground
10 ( GND )
GND
12V Ground
11 ( 12V )
I
12V
FAN 12V
J7
12 ( GND )
GND
FAN 12V Ground
1 ( AC-DET )
I
5V / 0V
AC POWER DETECT PORT
: AC INPUT DETECTING.
: AC POWER ON
High ,
AC POWER OFF
LOW
:Turn off the power by power sequence to
stabilize PDP MODULE in case of power
breakdown.
3 ( 5V STBY )
I
5V
5V INPUT PORT FOR VSC STANDBY
2 ( RL-ON )
O
5V / 0V
RELAY CONTROL PORT FOR POWER ON
: Relay On
High , Relay off Low
6 ( 5V-MNT )
I
5V / 0V
PDP MODULE STABLE CHECK PORT.
: The port to provide control signal to PDP
MODULE after the controller stabilized. At the
moment, MICOM always check this signal and
turn off the power when the signal is low.
4 ( GND )
5 (VAVS-ON )
O
5V / 0V
PORT FOR VA/VS OF PDP MODULE
.
: ON
HIGH , OFF
LOW
:To protect PDP MODULE, Micom turn on the
Va/Vs 2 seconds after checking 5V-MNT.
J6
7 ( NC )
No Connection
1 ( REMOCON )
I
5V
Monitor transmitter signal input port
2 ( GND )
3 ( 5VST )
O
5V
Stand by 5V Output Port
4 ( GND )
5 (LED-R )
O
5V / 0V
RED LED CONTORL OUTPUT PORT
: High : Red LED On
P2
6 (LED-G )
O
5V / 0V
GREEN LED CONTORL OUTPUT PORT
: High : Green LED On
BSV-4251/4251A RD(1)
00
03/10/23
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